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@@ -33,15 +33,82 @@
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* This file is part of Lustre, http://www.lustre.org/
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* Lustre is a trademark of Sun Microsystems, Inc.
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*/
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+#include <linux/module.h>
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+#include <linux/kernel.h>
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+#include <linux/mm.h>
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+#include <linux/string.h>
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+#include <linux/stat.h>
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+#include <linux/errno.h>
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+#include <linux/unistd.h>
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+#include <net/sock.h>
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+#include <linux/uio.h>
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-#define DEBUG_SUBSYSTEM S_LNET
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+#include <linux/uaccess.h>
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+
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+#include <linux/fs.h>
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+#include <linux/file.h>
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+#include <linux/list.h>
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+
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+#include <linux/proc_fs.h>
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+#include <linux/sysctl.h>
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+
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+# define DEBUG_SUBSYSTEM S_LNET
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#include "../../include/linux/libcfs/libcfs.h"
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+#include <asm/div64.h>
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+
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#include "../../include/linux/libcfs/libcfs_crypto.h"
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#include "../../include/linux/lnet/lib-lnet.h"
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#include "../../include/linux/lnet/lnet.h"
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#include "tracefile.h"
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+MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
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+MODULE_DESCRIPTION("Portals v3.1");
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+MODULE_LICENSE("GPL");
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+
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+extern struct miscdevice libcfs_dev;
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+extern struct rw_semaphore cfs_tracefile_sem;
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+extern struct mutex cfs_trace_thread_mutex;
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+extern struct cfs_wi_sched *cfs_sched_rehash;
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+extern void libcfs_init_nidstrings(void);
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+
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+static int insert_proc(void);
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+static void remove_proc(void);
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+
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+static struct ctl_table_header *lnet_table_header;
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+extern char lnet_upcall[1024];
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+/**
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+ * The path of debug log dump upcall script.
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+ */
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+extern char lnet_debug_log_upcall[1024];
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+
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+#define CTL_LNET (0x100)
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+
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+enum {
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+ PSDEV_DEBUG = 1, /* control debugging */
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+ PSDEV_SUBSYSTEM_DEBUG, /* control debugging */
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+ PSDEV_PRINTK, /* force all messages to console */
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+ PSDEV_CONSOLE_RATELIMIT, /* ratelimit console messages */
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+ PSDEV_CONSOLE_MAX_DELAY_CS, /* maximum delay over which we skip messages */
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+ PSDEV_CONSOLE_MIN_DELAY_CS, /* initial delay over which we skip messages */
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+ PSDEV_CONSOLE_BACKOFF, /* delay increase factor */
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+ PSDEV_DEBUG_PATH, /* crashdump log location */
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+ PSDEV_DEBUG_DUMP_PATH, /* crashdump tracelog location */
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+ PSDEV_CPT_TABLE, /* information about cpu partitions */
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+ PSDEV_LNET_UPCALL, /* User mode upcall script */
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+ PSDEV_LNET_MEMUSED, /* bytes currently PORTAL_ALLOCated */
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+ PSDEV_LNET_CATASTROPHE, /* if we have LBUGged or panic'd */
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+ PSDEV_LNET_PANIC_ON_LBUG, /* flag to panic on LBUG */
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+ PSDEV_LNET_DUMP_KERNEL, /* snapshot kernel debug buffer to file */
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+ PSDEV_LNET_DAEMON_FILE, /* spool kernel debug buffer to file */
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+ PSDEV_LNET_DEBUG_MB, /* size of debug buffer */
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+ PSDEV_LNET_DEBUG_LOG_UPCALL, /* debug log upcall script */
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+ PSDEV_LNET_WATCHDOG_RATELIMIT, /* ratelimit watchdog messages */
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+ PSDEV_LNET_FORCE_LBUG, /* hook to force an LBUG */
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+ PSDEV_LNET_FAIL_LOC, /* control test failures instrumentation */
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+ PSDEV_LNET_FAIL_VAL, /* userdata for fail loc */
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+};
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+
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static void kportal_memhog_free (struct libcfs_device_userstate *ldu)
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{
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struct page **level0p = &ldu->ldu_memhog_root_page;
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@@ -320,19 +387,6 @@ struct cfs_psdev_ops libcfs_psdev_ops = {
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libcfs_ioctl
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};
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-extern int insert_proc(void);
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-extern void remove_proc(void);
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-MODULE_AUTHOR("Peter J. Braam <braam@clusterfs.com>");
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-MODULE_DESCRIPTION("Portals v3.1");
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-MODULE_LICENSE("GPL");
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-
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-extern struct miscdevice libcfs_dev;
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-extern struct rw_semaphore cfs_tracefile_sem;
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-extern struct mutex cfs_trace_thread_mutex;
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-extern struct cfs_wi_sched *cfs_sched_rehash;
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-
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-extern void libcfs_init_nidstrings(void);
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-
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static int init_libcfs_module(void)
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{
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int rc;
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@@ -438,6 +492,485 @@ static void exit_libcfs_module(void)
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libcfs_arch_cleanup();
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}
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+static int proc_call_handler(void *data, int write, loff_t *ppos,
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+ void __user *buffer, size_t *lenp,
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+ int (*handler)(void *data, int write,
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+ loff_t pos, void __user *buffer, int len))
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+{
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+ int rc = handler(data, write, *ppos, buffer, *lenp);
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+
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+ if (rc < 0)
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+ return rc;
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+
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+ if (write) {
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+ *ppos += *lenp;
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+ } else {
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+ *lenp = rc;
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+ *ppos += rc;
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+ }
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+ return 0;
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+}
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+
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+static int __proc_dobitmasks(void *data, int write,
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+ loff_t pos, void __user *buffer, int nob)
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+{
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+ const int tmpstrlen = 512;
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+ char *tmpstr;
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+ int rc;
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+ unsigned int *mask = data;
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+ int is_subsys = (mask == &libcfs_subsystem_debug) ? 1 : 0;
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+ int is_printk = (mask == &libcfs_printk) ? 1 : 0;
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+
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+ rc = cfs_trace_allocate_string_buffer(&tmpstr, tmpstrlen);
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+ if (rc < 0)
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+ return rc;
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+
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+ if (!write) {
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+ libcfs_debug_mask2str(tmpstr, tmpstrlen, *mask, is_subsys);
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+ rc = strlen(tmpstr);
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+
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+ if (pos >= rc) {
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+ rc = 0;
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+ } else {
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+ rc = cfs_trace_copyout_string(buffer, nob,
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+ tmpstr + pos, "\n");
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+ }
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+ } else {
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+ rc = cfs_trace_copyin_string(tmpstr, tmpstrlen, buffer, nob);
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+ if (rc < 0) {
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+ cfs_trace_free_string_buffer(tmpstr, tmpstrlen);
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+ return rc;
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+ }
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+
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+ rc = libcfs_debug_str2mask(mask, tmpstr, is_subsys);
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+ /* Always print LBUG/LASSERT to console, so keep this mask */
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+ if (is_printk)
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+ *mask |= D_EMERG;
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+ }
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+
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+ cfs_trace_free_string_buffer(tmpstr, tmpstrlen);
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+ return rc;
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+}
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+
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+static int proc_dobitmasks(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ return proc_call_handler(table->data, write, ppos, buffer, lenp,
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+ __proc_dobitmasks);
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+}
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+
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+static int min_watchdog_ratelimit; /* disable ratelimiting */
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+static int max_watchdog_ratelimit = (24*60*60); /* limit to once per day */
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+
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+static int __proc_dump_kernel(void *data, int write,
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+ loff_t pos, void __user *buffer, int nob)
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+{
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+ if (!write)
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+ return 0;
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+
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+ return cfs_trace_dump_debug_buffer_usrstr(buffer, nob);
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+}
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+
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+static int proc_dump_kernel(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ return proc_call_handler(table->data, write, ppos, buffer, lenp,
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+ __proc_dump_kernel);
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+}
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+
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+static int __proc_daemon_file(void *data, int write,
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+ loff_t pos, void __user *buffer, int nob)
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+{
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+ if (!write) {
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+ int len = strlen(cfs_tracefile);
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+
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+ if (pos >= len)
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+ return 0;
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+
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+ return cfs_trace_copyout_string(buffer, nob,
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+ cfs_tracefile + pos, "\n");
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+ }
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+
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+ return cfs_trace_daemon_command_usrstr(buffer, nob);
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+}
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+
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+static int proc_daemon_file(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ return proc_call_handler(table->data, write, ppos, buffer, lenp,
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+ __proc_daemon_file);
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+}
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+
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+static int __proc_debug_mb(void *data, int write,
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+ loff_t pos, void __user *buffer, int nob)
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+{
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+ if (!write) {
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+ char tmpstr[32];
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+ int len = snprintf(tmpstr, sizeof(tmpstr), "%d",
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+ cfs_trace_get_debug_mb());
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+
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+ if (pos >= len)
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+ return 0;
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+
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+ return cfs_trace_copyout_string(buffer, nob, tmpstr + pos,
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+ "\n");
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+ }
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+
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+ return cfs_trace_set_debug_mb_usrstr(buffer, nob);
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+}
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+
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+static int proc_debug_mb(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ return proc_call_handler(table->data, write, ppos, buffer, lenp,
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+ __proc_debug_mb);
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+}
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+
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+static int proc_console_max_delay_cs(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp,
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+ loff_t *ppos)
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+{
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+ int rc, max_delay_cs;
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+ struct ctl_table dummy = *table;
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+ long d;
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+
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+ dummy.data = &max_delay_cs;
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+ dummy.proc_handler = &proc_dointvec;
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+
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+ if (!write) { /* read */
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+ max_delay_cs = cfs_duration_sec(libcfs_console_max_delay * 100);
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ return rc;
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+ }
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+
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+ /* write */
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+ max_delay_cs = 0;
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ if (rc < 0)
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+ return rc;
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+ if (max_delay_cs <= 0)
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+ return -EINVAL;
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+
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+ d = cfs_time_seconds(max_delay_cs) / 100;
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+ if (d == 0 || d < libcfs_console_min_delay)
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+ return -EINVAL;
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+ libcfs_console_max_delay = d;
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+
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+ return rc;
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+}
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+
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+static int proc_console_min_delay_cs(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp,
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+ loff_t *ppos)
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+{
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+ int rc, min_delay_cs;
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+ struct ctl_table dummy = *table;
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+ long d;
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+
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+ dummy.data = &min_delay_cs;
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+ dummy.proc_handler = &proc_dointvec;
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+
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+ if (!write) { /* read */
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+ min_delay_cs = cfs_duration_sec(libcfs_console_min_delay * 100);
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ return rc;
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+ }
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+
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+ /* write */
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+ min_delay_cs = 0;
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ if (rc < 0)
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+ return rc;
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+ if (min_delay_cs <= 0)
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+ return -EINVAL;
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+
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+ d = cfs_time_seconds(min_delay_cs) / 100;
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+ if (d == 0 || d > libcfs_console_max_delay)
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+ return -EINVAL;
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+ libcfs_console_min_delay = d;
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+
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+ return rc;
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+}
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+
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+static int proc_console_backoff(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ int rc, backoff;
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+ struct ctl_table dummy = *table;
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+
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+ dummy.data = &backoff;
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+ dummy.proc_handler = &proc_dointvec;
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+
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+ if (!write) { /* read */
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+ backoff = libcfs_console_backoff;
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ return rc;
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+ }
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+
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+ /* write */
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+ backoff = 0;
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+ rc = proc_dointvec(&dummy, write, buffer, lenp, ppos);
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+ if (rc < 0)
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+ return rc;
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+ if (backoff <= 0)
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+ return -EINVAL;
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+
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+ libcfs_console_backoff = backoff;
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+
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+ return rc;
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+}
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+
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+static int libcfs_force_lbug(struct ctl_table *table, int write,
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+ void __user *buffer,
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+ size_t *lenp, loff_t *ppos)
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+{
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+ if (write)
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+ LBUG();
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+ return 0;
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+}
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+
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+static int proc_fail_loc(struct ctl_table *table, int write,
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+ void __user *buffer,
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+ size_t *lenp, loff_t *ppos)
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+{
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+ int rc;
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+ long old_fail_loc = cfs_fail_loc;
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+
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+ rc = proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
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+ if (old_fail_loc != cfs_fail_loc)
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+ wake_up(&cfs_race_waitq);
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+ return rc;
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+}
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+
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+static int __proc_cpt_table(void *data, int write,
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+ loff_t pos, void __user *buffer, int nob)
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+{
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+ char *buf = NULL;
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+ int len = 4096;
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+ int rc = 0;
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+
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+ if (write)
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+ return -EPERM;
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+
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+ LASSERT(cfs_cpt_table != NULL);
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+
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+ while (1) {
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+ LIBCFS_ALLOC(buf, len);
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+ if (buf == NULL)
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+ return -ENOMEM;
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+
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+ rc = cfs_cpt_table_print(cfs_cpt_table, buf, len);
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+ if (rc >= 0)
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+ break;
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+
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+ if (rc == -EFBIG) {
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+ LIBCFS_FREE(buf, len);
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+ len <<= 1;
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+ continue;
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+ }
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+ goto out;
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+ }
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+
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+ if (pos >= rc) {
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+ rc = 0;
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+ goto out;
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+ }
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+
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+ rc = cfs_trace_copyout_string(buffer, nob, buf + pos, NULL);
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+ out:
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+ if (buf != NULL)
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+ LIBCFS_FREE(buf, len);
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+ return rc;
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+}
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+
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+static int proc_cpt_table(struct ctl_table *table, int write,
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+ void __user *buffer, size_t *lenp, loff_t *ppos)
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+{
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+ return proc_call_handler(table->data, write, ppos, buffer, lenp,
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+ __proc_cpt_table);
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+}
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+
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+static struct ctl_table lnet_table[] = {
|
|
|
+ /*
|
|
|
+ * NB No .strategy entries have been provided since sysctl(8) prefers
|
|
|
+ * to go via /proc for portability.
|
|
|
+ */
|
|
|
+ {
|
|
|
+ .procname = "debug",
|
|
|
+ .data = &libcfs_debug,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dobitmasks,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "subsystem_debug",
|
|
|
+ .data = &libcfs_subsystem_debug,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dobitmasks,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "printk",
|
|
|
+ .data = &libcfs_printk,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dobitmasks,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "console_ratelimit",
|
|
|
+ .data = &libcfs_console_ratelimit,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dointvec
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "console_max_delay_centisecs",
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_console_max_delay_cs
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "console_min_delay_centisecs",
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_console_min_delay_cs
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "console_backoff",
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_console_backoff
|
|
|
+ },
|
|
|
+
|
|
|
+ {
|
|
|
+ .procname = "debug_path",
|
|
|
+ .data = libcfs_debug_file_path_arr,
|
|
|
+ .maxlen = sizeof(libcfs_debug_file_path_arr),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dostring,
|
|
|
+ },
|
|
|
+
|
|
|
+ {
|
|
|
+ .procname = "cpu_partition_table",
|
|
|
+ .maxlen = 128,
|
|
|
+ .mode = 0444,
|
|
|
+ .proc_handler = &proc_cpt_table,
|
|
|
+ },
|
|
|
+
|
|
|
+ {
|
|
|
+ .procname = "upcall",
|
|
|
+ .data = lnet_upcall,
|
|
|
+ .maxlen = sizeof(lnet_upcall),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dostring,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "debug_log_upcall",
|
|
|
+ .data = lnet_debug_log_upcall,
|
|
|
+ .maxlen = sizeof(lnet_debug_log_upcall),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dostring,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "lnet_memused",
|
|
|
+ .data = (int *)&libcfs_kmemory.counter,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0444,
|
|
|
+ .proc_handler = &proc_dointvec,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "catastrophe",
|
|
|
+ .data = &libcfs_catastrophe,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0444,
|
|
|
+ .proc_handler = &proc_dointvec,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "panic_on_lbug",
|
|
|
+ .data = &libcfs_panic_on_lbug,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dointvec,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "dump_kernel",
|
|
|
+ .maxlen = 256,
|
|
|
+ .mode = 0200,
|
|
|
+ .proc_handler = &proc_dump_kernel,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "daemon_file",
|
|
|
+ .mode = 0644,
|
|
|
+ .maxlen = 256,
|
|
|
+ .proc_handler = &proc_daemon_file,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "debug_mb",
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_debug_mb,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "watchdog_ratelimit",
|
|
|
+ .data = &libcfs_watchdog_ratelimit,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dointvec_minmax,
|
|
|
+ .extra1 = &min_watchdog_ratelimit,
|
|
|
+ .extra2 = &max_watchdog_ratelimit,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "force_lbug",
|
|
|
+ .data = NULL,
|
|
|
+ .maxlen = 0,
|
|
|
+ .mode = 0200,
|
|
|
+ .proc_handler = &libcfs_force_lbug
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "fail_loc",
|
|
|
+ .data = &cfs_fail_loc,
|
|
|
+ .maxlen = sizeof(cfs_fail_loc),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_fail_loc
|
|
|
+ },
|
|
|
+ {
|
|
|
+ .procname = "fail_val",
|
|
|
+ .data = &cfs_fail_val,
|
|
|
+ .maxlen = sizeof(int),
|
|
|
+ .mode = 0644,
|
|
|
+ .proc_handler = &proc_dointvec
|
|
|
+ },
|
|
|
+ {
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+static struct ctl_table top_table[] = {
|
|
|
+ {
|
|
|
+ .procname = "lnet",
|
|
|
+ .mode = 0555,
|
|
|
+ .data = NULL,
|
|
|
+ .maxlen = 0,
|
|
|
+ .child = lnet_table,
|
|
|
+ },
|
|
|
+ {
|
|
|
+ }
|
|
|
+};
|
|
|
+
|
|
|
+static int insert_proc(void)
|
|
|
+{
|
|
|
+ if (lnet_table_header == NULL)
|
|
|
+ lnet_table_header = register_sysctl_table(top_table);
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void remove_proc(void)
|
|
|
+{
|
|
|
+ if (lnet_table_header != NULL)
|
|
|
+ unregister_sysctl_table(lnet_table_header);
|
|
|
+
|
|
|
+ lnet_table_header = NULL;
|
|
|
+}
|
|
|
+
|
|
|
MODULE_VERSION("1.0.0");
|
|
|
+
|
|
|
module_init(init_libcfs_module);
|
|
|
module_exit(exit_libcfs_module);
|
Matthew Tyler