b=11680 Add /proc/sys/lnet/force_lbug

[fs/lustre-release.git] / libcfs / libcfs / linux / linux-proc.c

diff --git a/libcfs/libcfs/linux/linux-proc.c b/libcfs/libcfs/linux/linux-proc.c
index fa4474d..a36cf1d 100644 (file)
--- a/libcfs/libcfs/linux/linux-proc.c
+++ b/libcfs/libcfs/linux/linux-proc.c
@@ -104,6 +104,7 @@ enum {
         PSDEV_LNET_DEBUG_MB,      /* size of debug buffer */
         PSDEV_LNET_DEBUG_LOG_UPCALL, /* debug log upcall script */
         PSDEV_LNET_WATCHDOG_RATELIMIT,  /* ratelimit watchdog messages  */
+        PSDEV_LNET_FORCE_LBUG,    /* hook to force an LBUG */
 };
 #else
 #define CTL_LNET                        CTL_UNNUMBERED
@@ -159,7 +160,7 @@ static int __proc_dobitmasks(void *data, int write,
         int           is_subsys = (mask == &libcfs_subsystem_debug) ? 1 : 0;
         int           is_printk = (mask == &libcfs_printk) ? 1 : 0;
 
-        rc = trace_allocate_string_buffer(&tmpstr, tmpstrlen);
+        rc = cfs_trace_allocate_string_buffer(&tmpstr, tmpstrlen);
         if (rc < 0)
                 return rc;
 
@@ -170,11 +171,11 @@ static int __proc_dobitmasks(void *data, int write,
                 if (pos >= rc) {
                         rc = 0;
                 } else {
-                        rc = trace_copyout_string(buffer, nob,
-                                                  tmpstr + pos, "\n");
+                        rc = cfs_trace_copyout_string(buffer, nob,
+                                                      tmpstr + pos, "\n");
                 }
         } else {
-                rc = trace_copyin_string(tmpstr, tmpstrlen, buffer, nob);
+                rc = cfs_trace_copyin_string(tmpstr, tmpstrlen, buffer, nob);
                 if (rc < 0)
                         return rc;
 
@@ -184,7 +185,7 @@ static int __proc_dobitmasks(void *data, int write,
                         *mask |= D_EMERG;
         }
 
-        trace_free_string_buffer(tmpstr, tmpstrlen);
+        cfs_trace_free_string_buffer(tmpstr, tmpstrlen);
         return rc;
 }
 
@@ -199,7 +200,7 @@ static int __proc_dump_kernel(void *data, int write,
         if (!write)
                 return 0;
 
-        return trace_dump_debug_buffer_usrstr(buffer, nob);
+        return cfs_trace_dump_debug_buffer_usrstr(buffer, nob);
 }
 
 DECLARE_PROC_HANDLER(proc_dump_kernel)
@@ -208,16 +209,16 @@ static int __proc_daemon_file(void *data, int write,
                               loff_t pos, void *buffer, int nob)
 {
         if (!write) {
-                int len = strlen(tracefile);
+                int len = strlen(cfs_tracefile);
 
                 if (pos >= len)
                         return 0;
 
-                return trace_copyout_string(buffer, nob,
-                                            tracefile + pos, "\n");
+                return cfs_trace_copyout_string(buffer, nob,
+                                                cfs_tracefile + pos, "\n");
         }
 
-        return trace_daemon_command_usrstr(buffer, nob);
+        return cfs_trace_daemon_command_usrstr(buffer, nob);
 }
 
 DECLARE_PROC_HANDLER(proc_daemon_file)
@@ -228,15 +229,16 @@ static int __proc_debug_mb(void *data, int write,
         if (!write) {
                 char tmpstr[32];
                 int  len = snprintf(tmpstr, sizeof(tmpstr), "%d",
-                                    trace_get_debug_mb());
+                                    cfs_trace_get_debug_mb());
 
                 if (pos >= len)
                         return 0;
 
-                return trace_copyout_string(buffer, nob, tmpstr + pos, "\n");
+                return cfs_trace_copyout_string(buffer, nob, tmpstr + pos,
+                       "\n");
         }
 
-        return trace_set_debug_mb_usrstr(buffer, nob);
+        return cfs_trace_set_debug_mb_usrstr(buffer, nob);
 }
 
 DECLARE_PROC_HANDLER(proc_debug_mb)
@@ -330,6 +332,13 @@ int LL_PROC_PROTO(proc_console_backoff)
         return rc;
 }
 
+int LL_PROC_PROTO(libcfs_force_lbug)
+{
+        if (write)
+                LBUG();
+        return 0;
+}
+
 static cfs_sysctl_table_t lnet_table[] = {
         /*
          * NB No .strategy entries have been provided since sysctl(8) prefers
@@ -392,8 +401,8 @@ static cfs_sysctl_table_t lnet_table[] = {
         {
                 .ctl_name = PSDEV_DEBUG_PATH,
                 .procname = "debug_path",
-                .data     = debug_file_path_arr,
-                .maxlen   = sizeof(debug_file_path_arr),
+                .data     = libcfs_debug_file_path_arr,
+                .maxlen   = sizeof(libcfs_debug_file_path_arr),
                 .mode     = 0644,
                 .proc_handler = &proc_dostring,
         },
@@ -471,6 +480,13 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .extra1   = &min_watchdog_ratelimit,
                 .extra2   = &max_watchdog_ratelimit,
         },
+        {       .ctl_name = PSDEV_LNET_FORCE_LBUG,
+                .procname = "force_lbug",
+                .data     = NULL,
+                .maxlen   = 0,
+                .mode     = 0200,
+                .proc_handler = &libcfs_force_lbug
+        },
         {0}
 };