Merge tag 'docs-for-linus' of git://git.lwn.net/linux-2.6

Pull documentation updates from Jonathan Corbet:
 "The main thing here is Ingo's big subdirectory documenting feature
  support for each architecture.  Beyond that, it's the usual pile of
  fixes, tweaks, and small additions"

* tag 'docs-for-linus' of git://git.lwn.net/linux-2.6: (79 commits)
  doc:md: fix typo in md.txt.
  Documentation/mic/mpssd: don't build x86 userspace when cross compiling
  Documentation/prctl: don't build tsc tests when cross compiling
  Documentation/vDSO: don't build tests when cross compiling
  Doc:ABI/testing: Fix typo in sysfs-bus-fcoe
  Doc: Docbook: Change wikipedia's URL from http to https in scsi.tmpl
  Doc: Change wikipedia's URL from http to https
  Documentation/kernel-parameters: add missing pciserial to the earlyprintk
  Doc:pps: Fix typo in pps.txt
  kbuild : Fix documentation of INSTALL_HDR_PATH
  Documentation: filesystems: updated struct file_operations documentation in vfs.txt
  kbuild: edit explanation of clean-files variable
  Doc: ja_JP: Fix typo in HOWTO
  Move freefall program from Documentation/ to tools/
  Documentation: ARM: EXYNOS: Describe boot loaders interface
  Doc:nfc: Fix typo in nfc-hci.txt
  vfs: Minor documentation fix
  Doc: networking: txtimestamp: fix printf format warning
  Documentation, intel_pstate: Improve legacy mode internal governors description
  Documentation: extend use case for EXPORT_SYMBOL_GPL()
  ...

Documentation/ABI/testing/sysfs-bus-fcoe

@@ -32,7 +32,7 @@ Description:	'FCoE Controller' instances on the fcoe bus.
 
 Attributes:
 
-	fcf_dev_loss_tmo: Device loss timeout peroid (see below). Changing
+	fcf_dev_loss_tmo: Device loss timeout period (see below). Changing
 			  this value will change the dev_loss_tmo for all
 			  FCFs discovered by this controller.
 
@@ -61,7 +61,7 @@ Attributes:
 	lesb/err_block:   Link Error Status Block (LESB) block error count.
 
 	lesb/fcs_error:   Link Error Status Block (LESB) Fibre Channel
-			  Serivces error count.
+			  Services error count.
 
 Notes: ctlr_X (global increment starting at 0)
 
@@ -85,7 +85,7 @@ Attributes:
 		     fabric.
 
 	selected:    1 indicates that the switch has been selected for use;
-		     0 indicates that the swich will not be used.
+		     0 indicates that the switch will not be used.
 
 	fc_map:      The Fibre Channel MAP
 
@@ -93,7 +93,7 @@ Attributes:
 
 	mac:         The FCF's MAC address
 
-	fka_peroid:  The FIP Keep-Alive peroid
+	fka_period:  The FIP Keep-Alive period
 
 	fabric_state: The internal kernel state
 		      "Unknown" - Initialization value
@@ -101,9 +101,9 @@ Attributes:
 		      "Connected" - Host is connected to the FCF
 		      "Deleted" - FCF is being removed from the system
 
-	dev_loss_tmo: The device loss timeout peroid for this FCF.
+	dev_loss_tmo: The device loss timeout period for this FCF.
 
-Notes: A device loss infrastructre similar to the FC Transport's
+Notes: A device loss infrastructure similar to the FC Transport's
        is present in fcoe_sysfs. It is nice to have so that a
        link flapping adapter doesn't continually advance the count
        used to identify the discovered FCF. FCFs will exist in a

Documentation/CodingStyle

@@ -670,7 +670,7 @@ functions:
 	typeof(x) ret;			\
 	ret = calc_ret(x);		\
 	(ret);				\
-)}
+})
 
 ret is a common name for a local variable - __foo_ret is less likely
 to collide with an existing variable.

Documentation/DMA-API-HOWTO.txt

@@ -245,7 +245,7 @@ the case would look like this:
 
 	if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64))) {
 		using_dac = 1;
-	   	consistent_using_dac = 1;
+		consistent_using_dac = 1;
 	} else if (!dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32))) {
 		using_dac = 0;
 		consistent_using_dac = 0;
@@ -358,7 +358,7 @@ There are two types of DMA mappings:
   transfer, unmapped right after it (unless you use dma_sync_* below)
   and for which hardware can optimize for sequential accesses.
 
-  This of "streaming" as "asynchronous" or "outside the coherency
+  Think of "streaming" as "asynchronous" or "outside the coherency
   domain".
 
   Good examples of what to use streaming mappings for are:

Documentation/DocBook/kernel-hacking.tmpl

@@ -954,6 +954,8 @@ printk(KERN_INFO "my ip: %pI4\n", &ipaddress);
     <function>MODULE_LICENSE()</function> that specifies a GPL
     compatible license.  It implies that the function is considered
     an internal implementation issue, and not really an interface.
+    Some maintainers and developers may however
+    require EXPORT_SYMBOL_GPL() when adding any new APIs or functionality.
    </para>
   </sect1>
  </chapter>

Documentation/DocBook/scsi.tmpl

@@ -81,7 +81,7 @@
         SAS, Fibre Channel, FireWire, and ATAPI devices.  SCSI packets are
         also commonly exchanged over Infiniband,
         <ulink url='http://i2o.shadowconnect.com/faq.php'>I20</ulink>, TCP/IP
-        (<ulink url='http://en.wikipedia.org/wiki/ISCSI'>iSCSI</ulink>), even
+        (<ulink url='https://en.wikipedia.org/wiki/ISCSI'>iSCSI</ulink>), even
         <ulink url='http://cyberelk.net/tim/parport/parscsi.html'>Parallel
         ports</ulink>.
       </para>

Documentation/RCU/RTFP.txt

@@ -1496,7 +1496,7 @@ Canis Rufus and Zoicon5 and Anome and Hal Eisen"
 ,month="July"
 ,day="8"
 ,year="2006"
-,note="\url{http://en.wikipedia.org/wiki/Read-copy-update}"
+,note="\url{https://en.wikipedia.org/wiki/Read-copy-update}"
 ,annotation={
 	Wikipedia RCU page as of July 8 2006.
 	[Viewed August 21, 2006]

Documentation/SubmittingPatches

@@ -299,7 +299,9 @@ toward the stable maintainers by putting a line like this:
 
   Cc: stable@vger.kernel.org
 
-into your patch.
+into the sign-off area of your patch (note, NOT an email recipient).  You
+should also read Documentation/stable_kernel_rules.txt in addition to this
+file.
 
 Note, however, that some subsystem maintainers want to come to their own
 conclusions on which patches should go to the stable trees.  The networking

Documentation/arm/Samsung/Bootloader-interface.txt

@@ -0,0 +1,53 @@
+      Interface between kernel and boot loaders on Exynos boards
+      ==========================================================
+
+Author: Krzysztof Kozlowski
+Date  : 6 June 2015
+
+The document tries to describe currently used interface between Linux kernel
+and boot loaders on Samsung Exynos based boards. This is not a definition
+of interface but rather a description of existing state, a reference
+for information purpose only.
+
+In the document "boot loader" means any of following: U-boot, proprietary
+SBOOT or any other firmware for ARMv7 and ARMv8 initializing the board before
+executing kernel.
+
+
+1. Non-Secure mode
+Address:      sysram_ns_base_addr
+Offset        Value                                        Purpose
+=============================================================================
+0x08          exynos_cpu_resume_ns                         System suspend
+0x0c          0x00000bad (Magic cookie)                    System suspend
+0x1c          exynos4_secondary_startup                    Secondary CPU boot
+0x1c + 4*cpu  exynos4_secondary_startup (Exynos4412)       Secondary CPU boot
+0x20          0xfcba0d10 (Magic cookie)                    AFTR
+0x24          exynos_cpu_resume_ns                         AFTR
+0x28 + 4*cpu  0x8 (Magic cookie, Exynos3250)               AFTR
+
+
+2. Secure mode
+Address:      sysram_base_addr
+Offset        Value                                        Purpose
+=============================================================================
+0x00          exynos4_secondary_startup                    Secondary CPU boot
+0x04          exynos4_secondary_startup (Exynos542x)       Secondary CPU boot
+4*cpu         exynos4_secondary_startup (Exynos4412)       Secondary CPU boot
+0x20          exynos_cpu_resume (Exynos4210 r1.0)          AFTR
+0x24          0xfcba0d10 (Magic cookie, Exynos4210 r1.0)   AFTR
+
+Address:      pmu_base_addr
+Offset        Value                                        Purpose
+=============================================================================
+0x0800        exynos_cpu_resume                            AFTR
+0x0814        exynos4_secondary_startup (Exynos4210 r1.1)  Secondary CPU boot
+0x0818        0xfcba0d10 (Magic cookie, Exynos4210 r1.1)   AFTR
+0x081C        exynos_cpu_resume (Exynos4210 r1.1)          AFTR
+
+
+3. Other (regardless of secure/non-secure mode)
+Address:      pmu_base_addr
+Offset        Value                           Purpose
+=============================================================================
+0x0908        Non-zero (only Exynos3250)      Secondary CPU boot up indicator

Documentation/arm/vlocks.txt

@@ -206,6 +206,6 @@ References
 [1] Lamport, L. "A New Solution of Dijkstra's Concurrent Programming
     Problem", Communications of the ACM 17, 8 (August 1974), 453-455.
 
-    http://en.wikipedia.org/wiki/Lamport%27s_bakery_algorithm
+    https://en.wikipedia.org/wiki/Lamport%27s_bakery_algorithm
 
 [2] linux/arch/arm/common/vlock.S, www.kernel.org.

Documentation/blackfin/gptimers-example.c

@@ -17,6 +17,12 @@
 
 #define DRIVER_NAME "gptimer_example"
 
+#ifdef IRQ_TIMER5
+#define SAMPLE_IRQ_TIMER IRQ_TIMER5
+#else
+#define SAMPLE_IRQ_TIMER IRQ_TIMER2
+#endif
+
 struct gptimer_data {
 	uint32_t period, width;
 };
@@ -57,7 +63,8 @@ static int __init gptimer_example_init(void)
 	}
 
 	/* grab the IRQ for the timer */
-	ret = request_irq(IRQ_TIMER5, gptimer_example_irq, IRQF_SHARED, DRIVER_NAME, &data);
+	ret = request_irq(SAMPLE_IRQ_TIMER, gptimer_example_irq,
+			IRQF_SHARED, DRIVER_NAME, &data);
 	if (ret) {
 		printk(KERN_NOTICE DRIVER_NAME ": IRQ request failed\n");
 		peripheral_free(P_TMR5);
@@ -65,7 +72,8 @@ static int __init gptimer_example_init(void)
 	}
 
 	/* setup the timer and enable it */
-	set_gptimer_config(TIMER5_id, WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA);
+	set_gptimer_config(TIMER5_id,
+			WDTH_CAP | PULSE_HI | PERIOD_CNT | IRQ_ENA);
 	enable_gptimers(TIMER5bit);
 
 	return 0;
@@ -75,7 +83,7 @@ module_init(gptimer_example_init);
 static void __exit gptimer_example_exit(void)
 {
 	disable_gptimers(TIMER5bit);
-	free_irq(IRQ_TIMER5, &data);
+	free_irq(SAMPLE_IRQ_TIMER, &data);
 	peripheral_free(P_TMR5);
 }
 module_exit(gptimer_example_exit);

Documentation/cpu-freq/governors.txt

@@ -36,7 +36,7 @@ Contents:
 1. What Is A CPUFreq Governor?
 ==============================
 
-Most cpufreq drivers (in fact, all except one, longrun) or even most
+Most cpufreq drivers (except the intel_pstate and longrun) or even most
 cpu frequency scaling algorithms only offer the CPU to be set to one
 frequency. In order to offer dynamic frequency scaling, the cpufreq
 core must be able to tell these drivers of a "target frequency". So

Documentation/cpu-freq/intel-pstate.txt

@@ -3,24 +3,25 @@ Intel P-state driver
 
 This driver provides an interface to control the P state selection for
 SandyBridge+ Intel processors.  The driver can operate two different
-modes based on the processor model legacy and Hardware P state (HWP)
+modes based on the processor model, legacy mode and Hardware P state (HWP)
 mode.
 
-In legacy mode the driver implements a scaling driver with an internal
-governor for Intel Core processors.  The driver follows the same model
-as the Transmeta scaling driver (longrun.c) and implements the
-setpolicy() instead of target().  Scaling drivers that implement
-setpolicy() are assumed to implement internal governors by the cpufreq
-core. All the logic for selecting the current P state is contained
-within the driver; no external governor is used by the cpufreq core.
+In legacy mode, the Intel P-state implements two internal governors,
+performance and powersave, that differ from the general cpufreq governors of
+the same name (the general cpufreq governors implement target(), whereas the
+internal Intel P-state governors implement setpolicy()).  The internal
+performance governor sets the max_perf_pct and min_perf_pct to 100; that is,
+the governor selects the highest available P state to maximize the performance
+of the core.  The internal powersave governor selects the appropriate P state
+based on the current load on the CPU.
 
 In HWP mode P state selection is implemented in the processor
 itself. The driver provides the interfaces between the cpufreq core and
 the processor to control P state selection based on user preferences
 and reporting frequency to the cpufreq core.  In this mode the
-internal governor code is disabled.
+internal Intel P-state governor code is disabled.
 
-In addtion to the interfaces provided by the cpufreq core for
+In addition to the interfaces provided by the cpufreq core for
 controlling frequency the driver provides sysfs files for
 controlling P state selection. These files have been added to
 /sys/devices/system/cpu/intel_pstate/

Documentation/debugging-via-ohci1394.txt

@@ -181,4 +181,4 @@ Notes
 Documentation and specifications: http://halobates.de/firewire/
 
 FireWire is a trademark of Apple Inc. - for more information please refer to:
-http://en.wikipedia.org/wiki/FireWire
+https://en.wikipedia.org/wiki/FireWire

Documentation/features/arch-support.txt

@@ -0,0 +1,11 @@
+
+For generic kernel features that need architecture support, the
+arch-support.txt file in each feature directory shows the arch
+support matrix, for all upstream Linux architectures.
+
+The meaning of entries in the tables is:
+
+    | ok |  # feature supported by the architecture
+    |TODO|  # feature not yet supported by the architecture
+    | .. |  # feature cannot be supported by the hardware
+

Documentation/features/core/BPF-JIT/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          BPF-JIT
+#         Kconfig:       HAVE_BPF_JIT
+#         description:   arch supports BPF JIT optimizations
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/core/generic-idle-thread/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          generic-idle-thread
+#         Kconfig:       GENERIC_SMP_IDLE_THREAD
+#         description:   arch makes use of the generic SMP idle thread facility
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: |  ok  |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: |  ok  |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: |  ok  |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: |  ok  |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/core/jump-labels/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          jump-labels
+#         Kconfig:       HAVE_ARCH_JUMP_LABEL
+#         description:   arch supports live patched, high efficiency branches
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/core/tracehook/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          tracehook
+#         Kconfig:       HAVE_ARCH_TRACEHOOK
+#         description:   arch supports tracehook (ptrace) register handling APIs
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: |  ok  |
+    |         c6x: |  ok  |
+    |        cris: | TODO |
+    |         frv: |  ok  |
+    |       h8300: | TODO |
+    |     hexagon: |  ok  |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: |  ok  |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: |  ok  |
+    |       nios2: |  ok  |
+    |    openrisc: |  ok  |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/KASAN/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          KASAN
+#         Kconfig:       HAVE_ARCH_KASAN
+#         description:   arch supports the KASAN runtime memory checker
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/gcov-profile-all/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          gcov-profile-all
+#         Kconfig:       ARCH_HAS_GCOV_PROFILE_ALL
+#         description:   arch supports whole-kernel GCOV code coverage profiling
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: |  ok  |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/kgdb/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          kgdb
+#         Kconfig:       HAVE_ARCH_KGDB
+#         description:   arch supports the kGDB kernel debugger
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: |  ok  |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: |  ok  |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: |  ok  |
+    |       nios2: |  ok  |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/kprobes-on-ftrace/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          kprobes-on-ftrace
+#         Kconfig:       HAVE_KPROBES_ON_FTRACE
+#         description:   arch supports combined kprobes and ftrace live patching
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/kprobes/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          kprobes
+#         Kconfig:       HAVE_KPROBES
+#         description:   arch supports live patched kernel probe
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: | TODO |
+    |       avr32: |  ok  |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/kretprobes/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          kretprobes
+#         Kconfig:       HAVE_KRETPROBES
+#         description:   arch supports kernel function-return probes
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/optprobes/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          optprobes
+#         Kconfig:       HAVE_OPTPROBES
+#         description:   arch supports live patched optprobes
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/stackprotector/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          stackprotector
+#         Kconfig:       HAVE_CC_STACKPROTECTOR
+#         description:   arch supports compiler driven stack overflow protection
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/uprobes/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          uprobes
+#         Kconfig:       ARCH_SUPPORTS_UPROBES
+#         description:   arch supports live patched user probes
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/debug/user-ret-profiler/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          user-ret-profiler
+#         Kconfig:       HAVE_USER_RETURN_NOTIFIER
+#         description:   arch supports user-space return from system call profiler
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/io/dma-api-debug/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          dma-api-debug
+#         Kconfig:       HAVE_DMA_API_DEBUG
+#         description:   arch supports DMA debug facilities
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: |  ok  |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/io/dma-contiguous/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          dma-contiguous
+#         Kconfig:       HAVE_DMA_CONTIGUOUS
+#         description:   arch supports the DMA CMA (continuous memory allocator)
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/io/dma_map_attrs/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          dma_map_attrs
+#         Kconfig:       HAVE_DMA_ATTRS
+#         description:   arch provides dma_*map*_attrs() APIs
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: |  ok  |
+    |     hexagon: |  ok  |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: |  ok  |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: |  ok  |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/io/sg-chain/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          sg-chain
+#         Kconfig:       ARCH_HAS_SG_CHAIN
+#         description:   arch supports chained scatter-gather lists
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/lib/strncasecmp/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          strncasecmp
+#         Kconfig:       __HAVE_ARCH_STRNCASECMP
+#         description:   arch provides an optimized strncasecmp() function
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: | TODO |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/list-arch.sh

@@ -0,0 +1,24 @@
+#
+# Small script that visualizes the kernel feature support status
+# of an architecture.
+#
+# (If no arguments are given then it will print the host architecture's status.)
+#
+
+ARCH=${1:-$(arch | sed 's/x86_64/x86/' | sed 's/i386/x86/')}
+
+cd $(dirname $0)
+echo "#"
+echo "# Kernel feature support matrix of the '$ARCH' architecture:"
+echo "#"
+
+for F in */*/arch-support.txt; do
+  SUBSYS=$(echo $F | cut -d/ -f1)
+  N=$(grep -h "^# Feature name:"        $F | cut -c25-)
+  C=$(grep -h "^#         Kconfig:"     $F | cut -c25-)
+  D=$(grep -h "^#         description:" $F | cut -c25-)
+  S=$(grep -hw $ARCH $F | cut -d\| -f3)
+
+  printf "%10s/%-22s:%s| %35s # %s\n" "$SUBSYS" "$N" "$S" "$C" "$D"
+done
+

Documentation/features/locking/cmpxchg-local/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          cmpxchg-local
+#         Kconfig:       HAVE_CMPXCHG_LOCAL
+#         description:   arch supports the this_cpu_cmpxchg() API
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/locking/lockdep/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          lockdep
+#         Kconfig:       LOCKDEP_SUPPORT
+#         description:   arch supports the runtime locking correctness debug facility
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: |  ok  |
+    |    blackfin: |  ok  |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: |  ok  |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: |  ok  |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: |  ok  |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: |  ok  |
+    |   unicore32: |  ok  |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/locking/queued-rwlocks/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          queued-rwlocks
+#         Kconfig:       ARCH_USE_QUEUED_RWLOCKS
+#         description:   arch supports queued rwlocks
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/locking/queued-spinlocks/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          queued-spinlocks
+#         Kconfig:       ARCH_USE_QUEUED_SPINLOCKS
+#         description:   arch supports queued spinlocks
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/locking/rwsem-optimized/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          rwsem-optimized
+#         Kconfig:       Optimized asm/rwsem.h
+#         description:   arch provides optimized rwsem APIs
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/perf/kprobes-event/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          kprobes-event
+#         Kconfig:       HAVE_REGS_AND_STACK_ACCESS_API
+#         description:   arch supports kprobes with perf events
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: |  ok  |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: | TODO |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/perf/perf-regs/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          perf-regs
+#         Kconfig:       HAVE_PERF_REGS
+#         description:   arch supports perf events register access
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/perf/perf-stackdump/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          perf-stackdump
+#         Kconfig:       HAVE_PERF_USER_STACK_DUMP
+#         description:   arch supports perf events stack dumps
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/sched/numa-balancing/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          numa-balancing
+#         Kconfig:       ARCH_SUPPORTS_NUMA_BALANCING
+#         description:   arch supports NUMA balancing
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ..  |
+    |         arm: |  ..  |
+    |       arm64: |  ..  |
+    |       avr32: |  ..  |
+    |    blackfin: |  ..  |
+    |         c6x: |  ..  |
+    |        cris: |  ..  |
+    |         frv: |  ..  |
+    |       h8300: |  ..  |
+    |     hexagon: |  ..  |
+    |        ia64: | TODO |
+    |        m32r: |  ..  |
+    |        m68k: |  ..  |
+    |       metag: |  ..  |
+    |  microblaze: |  ..  |
+    |        mips: | TODO |
+    |     mn10300: |  ..  |
+    |       nios2: |  ..  |
+    |    openrisc: |  ..  |
+    |      parisc: |  ..  |
+    |     powerpc: |  ok  |
+    |        s390: |  ..  |
+    |       score: |  ..  |
+    |          sh: |  ..  |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: |  ..  |
+    |   unicore32: |  ..  |
+    |         x86: |  ok  |
+    |      xtensa: |  ..  |
+    -----------------------

Documentation/features/seccomp/seccomp-filter/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          seccomp-filter
+#         Kconfig:       HAVE_ARCH_SECCOMP_FILTER
+#         description:   arch supports seccomp filters
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/time/arch-tick-broadcast/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          arch-tick-broadcast
+#         Kconfig:       ARCH_HAS_TICK_BROADCAST
+#         description:   arch provides tick_broadcast()
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: | TODO |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/time/clockevents/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          clockevents
+#         Kconfig:       GENERIC_CLOCKEVENTS
+#         description:   arch support generic clock events
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: |  ok  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: |  ok  |
+    |    blackfin: |  ok  |
+    |         c6x: |  ok  |
+    |        cris: |  ok  |
+    |         frv: | TODO |
+    |       h8300: |  ok  |
+    |     hexagon: |  ok  |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: |  ok  |
+    |       metag: |  ok  |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: |  ok  |
+    |       nios2: |  ok  |
+    |    openrisc: |  ok  |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: |  ok  |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: |  ok  |
+    |   unicore32: |  ok  |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/time/context-tracking/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          context-tracking
+#         Kconfig:       HAVE_CONTEXT_TRACKING
+#         description:   arch supports context tracking for NO_HZ_FULL
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/time/irq-time-acct/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          irq-time-acct
+#         Kconfig:       HAVE_IRQ_TIME_ACCOUNTING
+#         description:   arch supports precise IRQ time accounting
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ..  |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ..  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ..  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: |  ..  |
+    |     powerpc: |  ..  |
+    |        s390: |  ..  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ..  |
+    |        tile: |  ..  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/time/modern-timekeeping/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          modern-timekeeping
+#         Kconfig:       !ARCH_USES_GETTIMEOFFSET
+#         description:   arch does not use arch_gettimeoffset() anymore
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: |  ok  |
+    |         arm: | TODO |
+    |       arm64: |  ok  |
+    |       avr32: |  ok  |
+    |    blackfin: | TODO |
+    |         c6x: |  ok  |
+    |        cris: | TODO |
+    |         frv: |  ok  |
+    |       h8300: |  ok  |
+    |     hexagon: |  ok  |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: |  ok  |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: |  ok  |
+    |       nios2: |  ok  |
+    |    openrisc: |  ok  |
+    |      parisc: |  ok  |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: |  ok  |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: |  ok  |
+    |   unicore32: |  ok  |
+    |         x86: |  ok  |
+    |      xtensa: |  ok  |
+    -----------------------

Documentation/features/time/virt-cpuacct/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          virt-cpuacct
+#         Kconfig:       HAVE_VIRT_CPU_ACCOUNTING
+#         description:   arch supports precise virtual CPU time accounting
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: |  ok  |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: |  ok  |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: |  ok  |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/ELF-ASLR/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          ELF-ASLR
+#         Kconfig:       ARCH_HAS_ELF_RANDOMIZE
+#         description:   arch randomizes the stack, heap and binary images of ELF binaries
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/PG_uncached/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          PG_uncached
+#         Kconfig:       ARCH_USES_PG_UNCACHED
+#         description:   arch supports the PG_uncached page flag
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/THP/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          THP
+#         Kconfig:       HAVE_ARCH_TRANSPARENT_HUGEPAGE
+#         description:   arch supports transparent hugepages
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ..  |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: |  ..  |
+    |    blackfin: |  ..  |
+    |         c6x: |  ..  |
+    |        cris: |  ..  |
+    |         frv: |  ..  |
+    |       h8300: |  ..  |
+    |     hexagon: |  ..  |
+    |        ia64: | TODO |
+    |        m32r: |  ..  |
+    |        m68k: |  ..  |
+    |       metag: |  ..  |
+    |  microblaze: |  ..  |
+    |        mips: |  ok  |
+    |     mn10300: |  ..  |
+    |       nios2: |  ..  |
+    |    openrisc: |  ..  |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: |  ..  |
+    |          sh: |  ..  |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: |  ..  |
+    |   unicore32: |  ..  |
+    |         x86: |  ok  |
+    |      xtensa: |  ..  |
+    -----------------------

Documentation/features/vm/huge-vmap/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          huge-vmap
+#         Kconfig:       HAVE_ARCH_HUGE_VMAP
+#         description:   arch supports the ioremap_pud_enabled() and ioremap_pmd_enabled() VM APIs
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: | TODO |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/ioremap_prot/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          ioremap_prot
+#         Kconfig:       HAVE_IOREMAP_PROT
+#         description:   arch has ioremap_prot()
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ok  |
+    |         arm: | TODO |
+    |       arm64: | TODO |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: | TODO |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: | TODO |
+    |        tile: |  ok  |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/numa-memblock/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          numa-memblock
+#         Kconfig:       HAVE_MEMBLOCK_NODE_MAP
+#         description:   arch supports NUMA aware memblocks
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: |  ..  |
+    |         arm: |  ..  |
+    |       arm64: |  ..  |
+    |       avr32: |  ..  |
+    |    blackfin: |  ..  |
+    |         c6x: |  ..  |
+    |        cris: |  ..  |
+    |         frv: |  ..  |
+    |       h8300: |  ..  |
+    |     hexagon: |  ..  |
+    |        ia64: |  ok  |
+    |        m32r: | TODO |
+    |        m68k: |  ..  |
+    |       metag: |  ok  |
+    |  microblaze: |  ok  |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: |  ..  |
+    |    openrisc: |  ..  |
+    |      parisc: |  ..  |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: |  ok  |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: |  ..  |
+    |   unicore32: |  ..  |
+    |         x86: |  ok  |
+    |      xtensa: |  ..  |
+    -----------------------

Documentation/features/vm/pmdp_splitting_flush/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          pmdp_splitting_flush
+#         Kconfig:       __HAVE_ARCH_PMDP_SPLITTING_FLUSH
+#         description:   arch supports the pmdp_splitting_flush() VM API
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: |  ok  |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: | TODO |
+    |       sparc: | TODO |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/features/vm/pte_special/arch-support.txt

@@ -0,0 +1,40 @@
+#
+# Feature name:          pte_special
+#         Kconfig:       __HAVE_ARCH_PTE_SPECIAL
+#         description:   arch supports the pte_special()/pte_mkspecial() VM APIs
+#
+    -----------------------
+    |         arch |status|
+    -----------------------
+    |       alpha: | TODO |
+    |         arc: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
+    |       avr32: | TODO |
+    |    blackfin: | TODO |
+    |         c6x: | TODO |
+    |        cris: | TODO |
+    |         frv: | TODO |
+    |       h8300: | TODO |
+    |     hexagon: | TODO |
+    |        ia64: | TODO |
+    |        m32r: | TODO |
+    |        m68k: | TODO |
+    |       metag: | TODO |
+    |  microblaze: | TODO |
+    |        mips: | TODO |
+    |     mn10300: | TODO |
+    |       nios2: | TODO |
+    |    openrisc: | TODO |
+    |      parisc: | TODO |
+    |     powerpc: |  ok  |
+    |        s390: |  ok  |
+    |       score: | TODO |
+    |          sh: |  ok  |
+    |       sparc: |  ok  |
+    |        tile: | TODO |
+    |          um: | TODO |
+    |   unicore32: | TODO |
+    |         x86: |  ok  |
+    |      xtensa: | TODO |
+    -----------------------

Documentation/filesystems/porting

@@ -379,10 +379,10 @@ may now be called in rcu-walk mode (nd->flags & LOOKUP_RCU). -ECHILD should be
 returned if the filesystem cannot handle rcu-walk. See
 Documentation/filesystems/vfs.txt for more details.
 
-	permission and check_acl are inode permission checks that are called
-on many or all directory inodes on the way down a path walk (to check for
-exec permission). These must now be rcu-walk aware (flags & IPERM_FLAG_RCU).
-See Documentation/filesystems/vfs.txt for more details.
+	permission is an inode permission check that is called on many or all
+directory inodes on the way down a path walk (to check for exec permission). It
+must now be rcu-walk aware (mask & MAY_NOT_BLOCK).  See
+Documentation/filesystems/vfs.txt for more details.
  
 --
 [mandatory]

Documentation/filesystems/proc.txt

@@ -205,7 +205,7 @@ asynchronous manner and the value may not be very precise. To see a precise
 snapshot of a moment, you can see /proc/<pid>/smaps file and scan page table.
 It's slow but very precise.
 
-Table 1-2: Contents of the status files (as of 3.20.0)
+Table 1-2: Contents of the status files (as of 4.1)
 ..............................................................................
  Field                       Content
  Name                        filename of the executable
@@ -235,6 +235,7 @@ Table 1-2: Contents of the status files (as of 3.20.0)
  VmExe                       size of text segment
  VmLib                       size of shared library code
  VmPTE                       size of page table entries
+ VmPMD                       size of second level page tables
  VmSwap                      size of swap usage (the number of referred swapents)
  Threads                     number of threads
  SigQ                        number of signals queued/max. number for queue

Documentation/filesystems/vfs.txt

@@ -799,7 +799,7 @@ struct file_operations
 ----------------------
 
 This describes how the VFS can manipulate an open file. As of kernel
-3.12, the following members are defined:
+4.1, the following members are defined:
 
 struct file_operations {
 	struct module *owner;
@@ -813,8 +813,9 @@ struct file_operations {
 	long (*unlocked_ioctl) (struct file *, unsigned int, unsigned long);
 	long (*compat_ioctl) (struct file *, unsigned int, unsigned long);
 	int (*mmap) (struct file *, struct vm_area_struct *);
+	int (*mremap)(struct file *, struct vm_area_struct *);
 	int (*open) (struct inode *, struct file *);
-	int (*flush) (struct file *);
+	int (*flush) (struct file *, fl_owner_t id);
 	int (*release) (struct inode *, struct file *);
 	int (*fsync) (struct file *, loff_t, loff_t, int datasync);
 	int (*aio_fsync) (struct kiocb *, int datasync);
@@ -824,11 +825,15 @@ struct file_operations {
 	unsigned long (*get_unmapped_area)(struct file *, unsigned long, unsigned long, unsigned long, unsigned long);
 	int (*check_flags)(int);
 	int (*flock) (struct file *, int, struct file_lock *);
-	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, size_t, unsigned int);
-	ssize_t (*splice_read)(struct file *, struct pipe_inode_info *, size_t, unsigned int);
-	int (*setlease)(struct file *, long arg, struct file_lock **, void **);
-	long (*fallocate)(struct file *, int mode, loff_t offset, loff_t len);
+	ssize_t (*splice_write)(struct pipe_inode_info *, struct file *, loff_t *, size_t, unsigned int);
+	ssize_t (*splice_read)(struct file *, loff_t *, struct pipe_inode_info *, size_t, unsigned int);
+	int (*setlease)(struct file *, long, struct file_lock **, void **);
+	long (*fallocate)(struct file *file, int mode, loff_t offset,
+			  loff_t len);
 	void (*show_fdinfo)(struct seq_file *m, struct file *f);
+#ifndef CONFIG_MMU
+	unsigned (*mmap_capabilities)(struct file *);
+#endif
 };
 
 Again, all methods are called without any locks being held, unless

Documentation/gpio/consumer.txt

@@ -290,7 +290,7 @@ corresponding to a given GPIO using the following call:
 
 	int gpiod_to_irq(const struct gpio_desc *desc)
 
-It will return an IRQ number, or an negative errno code if the mapping can't be
+It will return an IRQ number, or a negative errno code if the mapping can't be
 done (most likely because that particular GPIO cannot be used as IRQ). It is an
 unchecked error to use a GPIO that wasn't set up as an input using
 gpiod_direction_input(), or to use an IRQ number that didn't originally come

Documentation/input/rotary-encoder.txt

@@ -33,7 +33,7 @@ The phase diagram of these two outputs look like this:
 	          one step (half-period mode)
 
 For more information, please see
-	http://en.wikipedia.org/wiki/Rotary_encoder
+	https://en.wikipedia.org/wiki/Rotary_encoder
 
 
 1. Events / state machine

Documentation/ja_JP/HOWTO

@@ -445,7 +445,7 @@ MAINTAINERS ファイルにリストがありますので参照してくださ
 メールの先頭でなく、各引用行の間にあなたの言いたいことを追加するべきで
 す。
 
-もしパッチをメールに付ける場合は、Documentaion/SubmittingPatches に提
+もしパッチをメールに付ける場合は、Documentation/SubmittingPatches に提
 示されているように、それは プレーンな可読テキストにすることを忘れない
 ようにしましょう。カーネル開発者は 添付や圧縮したパッチを扱いたがりま
 せん-

Documentation/kasan.txt

@@ -150,7 +150,7 @@ AddressSanitizer dedicates 1/8 of kernel memory to its shadow memory
 (e.g. 16TB to cover 128TB on x86_64) and uses direct mapping with a scale and
 offset to translate a memory address to its corresponding shadow address.
 
-Here is the function witch translate an address to its corresponding shadow
+Here is the function which translates an address to its corresponding shadow
 address:
 
 static inline void *kasan_mem_to_shadow(const void *addr)

Documentation/kbuild/headers_install.txt

@@ -24,7 +24,7 @@ The "make headers_install" command can be run in the top level directory of the
 kernel source code (or using a standard out-of-tree build).  It takes two
 optional arguments:
 
-  make headers_install ARCH=i386 INSTALL_HDR_PATH=/usr/include
+  make headers_install ARCH=i386 INSTALL_HDR_PATH=/usr
 
 ARCH indicates which architecture to produce headers for, and defaults to the
 current architecture.  The linux/asm directory of the exported kernel headers
@@ -33,8 +33,11 @@ the command:
 
   ls -d include/asm-* | sed 's/.*-//'
 
-INSTALL_HDR_PATH indicates where to install the headers.  It defaults to
-"./usr/include".
+INSTALL_HDR_PATH indicates where to install the headers. It defaults to
+"./usr".
+
+An 'include' directory is automatically created inside INSTALL_HDR_PATH and
+headers are installed in 'INSTALL_HDR_PATH/include'.
 
 The command "make headers_install_all" exports headers for all architectures
 simultaneously.  (This is mostly of interest to distribution maintainers,

Documentation/kbuild/makefiles.txt

@@ -755,8 +755,8 @@ Additional files can be specified in kbuild makefiles by use of $(clean-files).
 		#lib/Makefile
 		clean-files := crc32table.h
 
-When executing "make clean", the two files "devlist.h classlist.h" will be
-deleted. Kbuild will assume files to be in the same relative directory as the
+When executing "make clean", the file "crc32table.h" will be deleted.
+Kbuild will assume files to be in the same relative directory as the
 Makefile, except if prefixed with $(objtree).
 
 To delete a directory hierarchy use:

Documentation/kernel-parameters.txt

@@ -1019,6 +1019,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 			earlyprintk=serial[,0x...[,baudrate]]
 			earlyprintk=ttySn[,baudrate]
 			earlyprintk=dbgp[debugController#]
+			earlyprintk=pciserial,bus:device.function[,baudrate]
 
 			earlyprintk is useful when the kernel crashes before
 			the normal console is initialized. It is not enabled by
@@ -2453,7 +2454,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 
 	nomca		[IA-64] Disable machine check abort handling
 
-	nomce		[X86-32] Machine Check Exception
+	nomce		[X86-32] Disable Machine Check Exception
 
 	nomfgpt		[X86-32] Disable Multi-Function General Purpose
 			Timer usage (for AMD Geode machines).

Documentation/kmemleak.txt

@@ -6,7 +6,7 @@ Introduction
 
 Kmemleak provides a way of detecting possible kernel memory leaks in a
 way similar to a tracing garbage collector
-(http://en.wikipedia.org/wiki/Garbage_collection_%28computer_science%29#Tracing_garbage_collectors),
+(https://en.wikipedia.org/wiki/Garbage_collection_%28computer_science%29#Tracing_garbage_collectors),
 with the difference that the orphan objects are not freed but only
 reported via /sys/kernel/debug/kmemleak. A similar method is used by the
 Valgrind tool (memcheck --leak-check) to detect the memory leaks in

Documentation/laptops/.gitignore

@@ -1,2 +1 @@
 dslm
-freefall

Documentation/laptops/00-INDEX

@@ -8,8 +8,6 @@ disk-shock-protection.txt
 	- information on hard disk shock protection.
 dslm.c
 	- Simple Disk Sleep Monitor program
-freefall.c
-	- (HP/DELL) laptop accelerometer program for disk protection.
 laptop-mode.txt
 	- how to conserve battery power using laptop-mode.
 sony-laptop.txt

Documentation/laptops/Makefile

@@ -1,5 +1,5 @@
 # List of programs to build
-hostprogs-y := dslm freefall
+hostprogs-y := dslm
 
 # Tell kbuild to always build the programs
 always := $(hostprogs-y)

Documentation/magic-number.txt

@@ -116,7 +116,6 @@ COW_MAGIC             0x4f4f4f4d  cow_header_v1     arch/um/drivers/ubd_user.c
 I810_CARD_MAGIC       0x5072696E  i810_card         sound/oss/i810_audio.c
 TRIDENT_CARD_MAGIC    0x5072696E  trident_card      sound/oss/trident.c
 ROUTER_MAGIC          0x524d4157  wan_device        [in wanrouter.h pre 3.9]
-SCC_MAGIC             0x52696368  gs_port           drivers/char/scc.h
 SAVEKMSG_MAGIC1       0x53415645  savekmsg          arch/*/amiga/config.c
 GDA_MAGIC             0x58464552  gda               arch/mips/include/asm/sn/gda.h
 RED_MAGIC1            0x5a2cf071  (any)             mm/slab.c
@@ -138,7 +137,6 @@ KMALLOC_MAGIC         0x87654321  snd_alloc_track   sound/core/memory.c
 PWC_MAGIC             0x89DC10AB  pwc_device        drivers/usb/media/pwc.h
 NBD_REPLY_MAGIC       0x96744668  nbd_reply         include/linux/nbd.h
 ENI155_MAGIC          0xa54b872d  midway_eprom	    drivers/atm/eni.h
-SCI_MAGIC             0xbabeface  gs_port           drivers/char/sh-sci.h
 CODA_MAGIC            0xC0DAC0DA  coda_file_info    fs/coda/coda_fs_i.h
 DPMEM_MAGIC           0xc0ffee11  gdt_pci_sram      drivers/scsi/gdth.h
 YAM_MAGIC             0xF10A7654  yam_port          drivers/net/hamradio/yam.c

Documentation/md.txt

@@ -549,7 +549,7 @@ also have
    sync_speed_max
      This are similar to /proc/sys/dev/raid/speed_limit_{min,max}
      however they only apply to the particular array.
-     If no value has been written to these, of if the word 'system'
+     If no value has been written to these, or if the word 'system'
      is written, then the system-wide value is used.  If a value,
      in kibibytes-per-second is written, then it is used.
      When the files are read, they show the currently active value

Documentation/mic/mpssd/Makefile

@@ -1,3 +1,4 @@
+ifndef CROSS_COMPILE
 # List of programs to build
 hostprogs-$(CONFIG_X86_64) := mpssd
 
@@ -17,3 +18,4 @@ HOSTLOADLIBES_mpssd := -lpthread
 install:
 	install mpssd /usr/sbin/mpssd
 	install micctrl /usr/sbin/micctrl
+endif

Documentation/networking/fore200e.txt

@@ -37,7 +37,7 @@ version. Alternative binary firmware images can be found somewhere on the
 ForeThought CD-ROM supplied with your adapter by FORE Systems.
 
 You can also get the latest firmware images from FORE Systems at
-http://en.wikipedia.org/wiki/FORE_Systems. Register TACTics Online and go to
+https://en.wikipedia.org/wiki/FORE_Systems. Register TACTics Online and go to
 the 'software updates' pages. The firmware binaries are part of
 the various ForeThought software distributions.
 

Documentation/networking/timestamping/txtimestamp.c

@@ -36,6 +36,7 @@
 #include <asm/types.h>
 #include <error.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <linux/errqueue.h>
 #include <linux/if_ether.h>
 #include <linux/net_tstamp.h>
@@ -49,7 +50,6 @@
 #include <poll.h>
 #include <stdarg.h>
 #include <stdbool.h>
-#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -96,7 +96,7 @@ static void __print_timestamp(const char *name, struct timespec *cur,
 		prev_ms = (long) ts_prev.tv_sec * 1000 * 1000;
 		prev_ms += ts_prev.tv_nsec / 1000;
 
-		fprintf(stderr, "  (%+ld us)", cur_ms - prev_ms);
+		fprintf(stderr, "  (%+" PRId64 " us)", cur_ms - prev_ms);
 	}
 
 	ts_prev = *cur;

Documentation/pps/pps.txt

@@ -166,7 +166,7 @@ Testing the PPS support
 
 In order to test the PPS support even without specific hardware you can use
 the ktimer driver (see the client subsection in the PPS configuration menu)
-and the userland tools provided into Documentaion/pps/ directory.
+and the userland tools provided in the Documentation/pps/ directory.
 
 Once you have enabled the compilation of ktimer just modprobe it (if
 not statically compiled):

Documentation/prctl/Makefile

@@ -1,3 +1,4 @@
+ifndef CROSS_COMPILE
 # List of programs to build
 hostprogs-$(CONFIG_X86) := disable-tsc-ctxt-sw-stress-test disable-tsc-on-off-stress-test disable-tsc-test
 # Tell kbuild to always build the programs
@@ -6,3 +7,4 @@ always := $(hostprogs-y)
 HOSTCFLAGS_disable-tsc-ctxt-sw-stress-test.o += -I$(objtree)/usr/include
 HOSTCFLAGS_disable-tsc-on-off-stress-test.o += -I$(objtree)/usr/include
 HOSTCFLAGS_disable-tsc-test.o += -I$(objtree)/usr/include
+endif

Documentation/stable_kernel_rules.txt

@@ -59,11 +59,20 @@ For all other submissions, choose one of the following procedures:
    changelog of your submission, as well as the kernel version you wish
    it to be applied to.
 
-Option 1 is probably the easiest and most common. Options 2 and 3 are more
-useful if the patch isn't deemed worthy at the time it is applied to a public
-git tree (for instance, because it deserves more regression testing first).
-Option 3 is especially useful if the patch needs some special handling to apply
-to an older kernel (e.g., if API's have changed in the meantime).
+Option 1 is *strongly* preferred, is the easiest and most common.  Options 2 and
+3 are more useful if the patch isn't deemed worthy at the time it is applied to
+a public git tree (for instance, because it deserves more regression testing
+first).  Option 3 is especially useful if the patch needs some special handling
+to apply to an older kernel (e.g., if API's have changed in the meantime).
+
+Note that for Option 3, if the patch deviates from the original upstream patch
+(for example because it had to be backported) this must be very clearly
+documented and justified in the patch description.
+
+The upstream commit ID must be specified with a separate line above the commit
+text, like this:
+
+    commit <sha1> upstream.
 
 Additionally, some patches submitted via Option 1 may have additional patch
 prerequisites which can be cherry-picked. This can be specified in the following

Documentation/trace/ftrace.txt

@@ -108,8 +108,8 @@ of ftrace. Here is a list of some of the key files:
 	data is read from this file, it is consumed, and
 	will not be read again with a sequential read. The
 	"trace" file is static, and if the tracer is not
-	adding more data,they will display the same
-	information every time they are read.
+	adding more data, it will display the same
+	information every time it is read.
 
   trace_options:
 

Documentation/usb/usb-serial.txt

@@ -465,12 +465,14 @@ Generic Serial driver
   device, and does not support any kind of device flow control. All that
   is required of your device is that it has at least one bulk in endpoint,
   or one bulk out endpoint. 
-  
-  To enable the generic driver to recognize your device, build the driver
-  as a module and load it by the following invocation:
+
+  To enable the generic driver to recognize your device, provide
+	echo <vid> <pid> >/sys/bus/usb-serial/drivers/generic/new_id
+  where the <vid> and <pid> is replaced with the hex representation of your
+  device's vendor id and product id.
+  If the driver is compiled as a module you can also provide one id when
+  loading the module
 	insmod usbserial vendor=0x#### product=0x####
-  where the #### is replaced with the hex representation of your device's
-  vendor id and product id.
 
   This driver has been successfully used to connect to the NetChip USB
   development board, providing a way to develop USB firmware without

Documentation/vDSO/Makefile

@@ -1,3 +1,4 @@
+ifndef CROSS_COMPILE
 # vdso_test won't build for glibc < 2.16, so disable it
 # hostprogs-y := vdso_test
 hostprogs-$(CONFIG_X86) := vdso_standalone_test_x86
@@ -13,3 +14,4 @@ HOSTLOADLIBES_vdso_standalone_test_x86 := -nostdlib
 ifeq ($(CONFIG_X86_32),y)
 HOSTLOADLIBES_vdso_standalone_test_x86 += -lgcc_s
 endif
+endif

Documentation/zh_CN/magic-number.txt

@@ -116,7 +116,6 @@ COW_MAGIC             0x4f4f4f4d  cow_header_v1     arch/um/drivers/ubd_user.c
 I810_CARD_MAGIC       0x5072696E  i810_card         sound/oss/i810_audio.c
 TRIDENT_CARD_MAGIC    0x5072696E  trident_card      sound/oss/trident.c
 ROUTER_MAGIC          0x524d4157  wan_device        [in wanrouter.h pre 3.9]
-SCC_MAGIC             0x52696368  gs_port           drivers/char/scc.h
 SAVEKMSG_MAGIC1       0x53415645  savekmsg          arch/*/amiga/config.c
 GDA_MAGIC             0x58464552  gda               arch/mips/include/asm/sn/gda.h
 RED_MAGIC1            0x5a2cf071  (any)             mm/slab.c
@@ -138,7 +137,6 @@ KMALLOC_MAGIC         0x87654321  snd_alloc_track   sound/core/memory.c
 PWC_MAGIC             0x89DC10AB  pwc_device        drivers/usb/media/pwc.h
 NBD_REPLY_MAGIC       0x96744668  nbd_reply         include/linux/nbd.h
 ENI155_MAGIC          0xa54b872d  midway_eprom	    drivers/atm/eni.h
-SCI_MAGIC             0xbabeface  gs_port           drivers/char/sh-sci.h
 CODA_MAGIC            0xC0DAC0DA  coda_file_info    include/linux/coda_fs_i.h
 DPMEM_MAGIC           0xc0ffee11  gdt_pci_sram      drivers/scsi/gdth.h
 YAM_MAGIC             0xF10A7654  yam_port          drivers/net/hamradio/yam.c

firmware/README.AddingFirmware

@@ -21,15 +21,25 @@ been permitted to redistribute under separate cover.
 
 To submit firmware to that repository, please send either a git binary
 diff or preferably a git pull request to:
-      David Woodhouse <dwmw2@infradead.org>
-      Ben Hutchings <ben@decadent.org.uk>
+      linux-firmware@kernel.org
+and also cc: to related mailing lists.
 
 Your commit should include an update to the WHENCE file clearly
 identifying the licence under which the firmware is available, and
 that it is redistributable. If the licence is long and involved, it's
 permitted to include it in a separate file and refer to it from the
 WHENCE file.
+And if it were possible, a changelog of the firmware itself.
 
 Ideally, your commit should contain a Signed-Off-By: from someone
 authoritative on the licensing of the firmware in question (i.e. from
 within the company that owns the code).
+
+
+WARNING:
+=======
+
+Don't send any "CONFIDENTIALITY STATEMENT" in your e-mail, patch or
+request. Otherwise your firmware _will never be accepted_.
+
+Maintainers are really busy, so don't expect a prompt reply.

tools/Makefile

@@ -23,6 +23,7 @@ help:
 	@echo '  vm         - misc vm tools'
 	@echo '  x86_energy_perf_policy - Intel energy policy tool'
 	@echo '  tmon       - thermal monitoring and tuning tool'
+	@echo '  freefall   - laptop accelerometer program for disk protection'
 	@echo ''
 	@echo 'You can do:'
 	@echo ' $$ make -C tools/ <tool>_install'
@@ -72,6 +73,9 @@ turbostat x86_energy_perf_policy: FORCE
 tmon: FORCE
 	$(call descend,thermal/$@)
 
+freefall: FORCE
+	$(call descend,laptop/$@)
+
 acpi_install:
 	$(call descend,power/$(@:_install=),install)
 
@@ -90,10 +94,13 @@ turbostat_install x86_energy_perf_policy_install:
 tmon_install:
 	$(call descend,thermal/$(@:_install=),install)
 
+freefall_install:
+	$(call descend,laptop/$(@:_install=),install)
+
 install: acpi_install cgroup_install cpupower_install hv_install firewire_install lguest_install \
 		perf_install selftests_install turbostat_install usb_install \
 		virtio_install vm_install net_install x86_energy_perf_policy_install \
-	tmon
+		tmon freefall_install
 
 acpi_clean:
 	$(call descend,power/acpi,clean)
@@ -122,8 +129,11 @@ turbostat_clean x86_energy_perf_policy_clean:
 tmon_clean:
 	$(call descend,thermal/tmon,clean)
 
+freefall_clean:
+	$(call descend,laptop/freefall,clean)
+
 clean: acpi_clean cgroup_clean cpupower_clean hv_clean firewire_clean lguest_clean \
 		perf_clean selftests_clean turbostat_clean usb_clean virtio_clean \
-		vm_clean net_clean x86_energy_perf_policy_clean tmon_clean
+		vm_clean net_clean x86_energy_perf_policy_clean tmon_clean freefall_clean
 
 .PHONY: FORCE

tools/laptop/freefall/Makefile

@@ -0,0 +1,17 @@
+PREFIX ?= /usr
+SBINDIR ?= sbin
+INSTALL ?= install
+CC = $(CROSS_COMPILE)gcc
+
+TARGET = freefall
+
+all: $(TARGET)
+
+%: %.c
+	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $<
+
+clean:
+	$(RM) $(TARGET)
+
+install: freefall
+	$(INSTALL) -D -m 755 $(TARGET) $(DESTDIR)$(PREFIX)/$(SBINDIR)/$(TARGET)