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LU-506 FC15: ctl_name & strategy removed from ctl_table.
[fs/lustre-release.git] / libcfs / libcfs / linux / linux-proc.c
index 765a888..018643a 100644 (file)
@@ -26,7 +26,7 @@
  * GPL HEADER END
  */
 /*
- * Copyright  2008 Sun Microsystems, Inc. All rights reserved
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
  * Use is subject to license terms.
  */
 /*
@@ -76,7 +76,9 @@
 #include <asm/div64.h>
 #include "tracefile.h"
 
+#ifdef CONFIG_SYSCTL
 static cfs_sysctl_table_header_t *lnet_table_header = NULL;
+#endif
 extern char lnet_upcall[1024];
 /**
  * The path of debug log dump upcall script.
@@ -104,6 +106,9 @@ 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 */
+        PSDEV_LNET_FAIL_LOC,      /* control test failures instrumentation */
+        PSDEV_LNET_FAIL_VAL,      /* userdata for fail loc */
 };
 #else
 #define CTL_LNET                        CTL_UNNUMBERED
@@ -124,10 +129,13 @@ enum {
 #define PSDEV_LNET_DAEMON_FILE          CTL_UNNUMBERED
 #define PSDEV_LNET_DEBUG_MB             CTL_UNNUMBERED
 #define PSDEV_LNET_DEBUG_LOG_UPCALL     CTL_UNNUMBERED
+#define PSDEV_LNET_WATCHDOG_RATELIMIT   CTL_UNNUMBERED
+#define PSDEV_LNET_FORCE_LBUG           CTL_UNNUMBERED
+#define PSDEV_LNET_FAIL_LOC             CTL_UNNUMBERED
+#define PSDEV_LNET_FAIL_VAL             CTL_UNNUMBERED
 #endif
 
-
-static int
+int
 proc_call_handler(void *data, int write,
                   loff_t *ppos, void *buffer, size_t *lenp,
                   int (*handler)(void *data, int write,
@@ -158,7 +166,7 @@ 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;
 
@@ -169,11 +177,11 @@ 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;
 
@@ -183,7 +191,7 @@ 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;
 }
 
@@ -198,7 +206,7 @@ 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)
@@ -207,16 +215,16 @@ 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)
@@ -227,15 +235,16 @@ 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)
@@ -329,13 +338,31 @@ int LL_PROC_PROTO(proc_console_backoff)
         return rc;
 }
 
+int LL_PROC_PROTO(libcfs_force_lbug)
+{
+        if (write)
+                LBUG();
+        return 0;
+}
+
+int LL_PROC_PROTO(proc_fail_loc)
+{
+        int rc;
+        long old_fail_loc = cfs_fail_loc;
+
+        rc = ll_proc_dolongvec(table, write, filp, buffer, lenp, ppos);
+        if (old_fail_loc != cfs_fail_loc)
+                cfs_waitq_signal(&cfs_race_waitq);
+        return rc;
+}
+
 static cfs_sysctl_table_t lnet_table[] = {
         /*
          * NB No .strategy entries have been provided since sysctl(8) prefers
          * to go via /proc for portability.
          */
         {
-                .ctl_name = PSDEV_DEBUG,
+                INIT_CTL_NAME(PSDEV_DEBUG)
                 .procname = "debug",
                 .data     = &libcfs_debug,
                 .maxlen   = sizeof(int),
@@ -343,7 +370,7 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dobitmasks,
         },
         {
-                .ctl_name = PSDEV_SUBSYSTEM_DEBUG,
+                INIT_CTL_NAME(PSDEV_SUBSYSTEM_DEBUG)
                 .procname = "subsystem_debug",
                 .data     = &libcfs_subsystem_debug,
                 .maxlen   = sizeof(int),
@@ -351,7 +378,7 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dobitmasks,
         },
         {
-                .ctl_name = PSDEV_PRINTK,
+                INIT_CTL_NAME(PSDEV_PRINTK)
                 .procname = "printk",
                 .data     = &libcfs_printk,
                 .maxlen   = sizeof(int),
@@ -359,7 +386,7 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dobitmasks,
         },
         {
-                .ctl_name = PSDEV_CONSOLE_RATELIMIT,
+                INIT_CTL_NAME(PSDEV_CONSOLE_RATELIMIT)
                 .procname = "console_ratelimit",
                 .data     = &libcfs_console_ratelimit,
                 .maxlen   = sizeof(int),
@@ -367,21 +394,21 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dointvec
         },
         {
-                .ctl_name = PSDEV_CONSOLE_MAX_DELAY_CS,
+                INIT_CTL_NAME(PSDEV_CONSOLE_MAX_DELAY_CS)
                 .procname = "console_max_delay_centisecs",
                 .maxlen   = sizeof(int),
                 .mode     = 0644,
                 .proc_handler = &proc_console_max_delay_cs
         },
         {
-                .ctl_name = PSDEV_CONSOLE_MIN_DELAY_CS,
+                INIT_CTL_NAME(PSDEV_CONSOLE_MIN_DELAY_CS)
                 .procname = "console_min_delay_centisecs",
                 .maxlen   = sizeof(int),
                 .mode     = 0644,
                 .proc_handler = &proc_console_min_delay_cs
         },
         {
-                .ctl_name = PSDEV_CONSOLE_BACKOFF,
+                INIT_CTL_NAME(PSDEV_CONSOLE_BACKOFF)
                 .procname = "console_backoff",
                 .maxlen   = sizeof(int),
                 .mode     = 0644,
@@ -389,16 +416,16 @@ static cfs_sysctl_table_t lnet_table[] = {
         },
 
         {
-                .ctl_name = PSDEV_DEBUG_PATH,
+                INIT_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,
         },
 
         {
-                .ctl_name = PSDEV_LNET_UPCALL,
+                INIT_CTL_NAME(PSDEV_LNET_UPCALL)
                 .procname = "upcall",
                 .data     = lnet_upcall,
                 .maxlen   = sizeof(lnet_upcall),
@@ -406,7 +433,7 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dostring,
         },
         {
-                .ctl_name = PSDEV_LNET_DEBUG_LOG_UPCALL,
+                INIT_CTL_NAME(PSDEV_LNET_DEBUG_LOG_UPCALL)
                 .procname = "debug_log_upcall",
                 .data     = lnet_debug_log_upcall,
                 .maxlen   = sizeof(lnet_debug_log_upcall),
@@ -414,54 +441,54 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .proc_handler = &proc_dostring,
         },
         {
-                .ctl_name = PSDEV_LNET_MEMUSED,
-                .procname = "memused",
+                INIT_CTL_NAME(PSDEV_LNET_MEMUSED)
+                .procname = "lnet_memused",
                 .data     = (int *)&libcfs_kmemory.counter,
                 .maxlen   = sizeof(int),
                 .mode     = 0444,
                 .proc_handler = &proc_dointvec,
-                .strategy = &sysctl_intvec,
+                INIT_STRATEGY(&sysctl_intvec)
         },
         {
-                .ctl_name = PSDEV_LNET_CATASTROPHE,
+                INIT_CTL_NAME(PSDEV_LNET_CATASTROPHE)
                 .procname = "catastrophe",
                 .data     = &libcfs_catastrophe,
                 .maxlen   = sizeof(int),
                 .mode     = 0444,
                 .proc_handler = &proc_dointvec,
-                .strategy = &sysctl_intvec,
+                INIT_STRATEGY(&sysctl_intvec)
         },
         {
-                .ctl_name = PSDEV_LNET_PANIC_ON_LBUG,
+                INIT_CTL_NAME(PSDEV_LNET_PANIC_ON_LBUG)
                 .procname = "panic_on_lbug",
                 .data     = &libcfs_panic_on_lbug,
                 .maxlen   = sizeof(int),
                 .mode     = 0644,
                 .proc_handler = &proc_dointvec,
-                .strategy = &sysctl_intvec,
+                INIT_STRATEGY(&sysctl_intvec)
         },
         {
-                .ctl_name = PSDEV_LNET_DUMP_KERNEL,
+                INIT_CTL_NAME(PSDEV_LNET_DUMP_KERNEL)
                 .procname = "dump_kernel",
                 .maxlen   = 256,
                 .mode     = 0200,
                 .proc_handler = &proc_dump_kernel,
         },
         {
-                .ctl_name = PSDEV_LNET_DAEMON_FILE,
+                INIT_CTL_NAME(PSDEV_LNET_DAEMON_FILE)
                 .procname = "daemon_file",
                 .mode     = 0644,
                 .maxlen   = 256,
                 .proc_handler = &proc_daemon_file,
         },
         {
-                .ctl_name = PSDEV_LNET_DEBUG_MB,
+                INIT_CTL_NAME(PSDEV_LNET_DEBUG_MB)
                 .procname = "debug_mb",
                 .mode     = 0644,
                 .proc_handler = &proc_debug_mb,
         },
         {
-                .ctl_name = PSDEV_LNET_WATCHDOG_RATELIMIT,
+                INIT_CTL_NAME(PSDEV_LNET_WATCHDOG_RATELIMIT)
                 .procname = "watchdog_ratelimit",
                 .data     = &libcfs_watchdog_ratelimit,
                 .maxlen   = sizeof(int),
@@ -470,12 +497,38 @@ static cfs_sysctl_table_t lnet_table[] = {
                 .extra1   = &min_watchdog_ratelimit,
                 .extra2   = &max_watchdog_ratelimit,
         },
-        {0}
+        {       INIT_CTL_NAME(PSDEV_LNET_FORCE_LBUG)
+                .procname = "force_lbug",
+                .data     = NULL,
+                .maxlen   = 0,
+                .mode     = 0200,
+                .proc_handler = &libcfs_force_lbug
+        },
+        {
+                INIT_CTL_NAME(PSDEV_LNET_FAIL_LOC)
+                .procname = "fail_loc",
+                .data     = &cfs_fail_loc,
+                .maxlen   = sizeof(cfs_fail_loc),
+                .mode     = 0644,
+                .proc_handler = &proc_fail_loc
+        },
+        {
+                INIT_CTL_NAME(PSDEV_LNET_FAIL_VAL)
+                .procname = "fail_val",
+                .data     = &cfs_fail_val,
+                .maxlen   = sizeof(int),
+                .mode     = 0644,
+                .proc_handler = &proc_dointvec
+        },
+        {
+                INIT_CTL_NAME(0)
+        }
 };
 
+#ifdef CONFIG_SYSCTL
 static cfs_sysctl_table_t top_table[] = {
         {
-                .ctl_name = CTL_LNET,
+                INIT_CTL_NAME(CTL_LNET)
                 .procname = "lnet",
                 .mode     = 0555,
                 .data     = NULL,
@@ -483,13 +536,12 @@ static cfs_sysctl_table_t top_table[] = {
                 .child    = lnet_table,
         },
         {
-                .ctl_name = 0
+                INIT_CTL_NAME(0)
         }
 };
 
 int insert_proc(void)
 {
-#ifdef CONFIG_SYSCTL
         if (lnet_table_header == NULL)
                 lnet_table_header = cfs_register_sysctl_table(top_table, 0);
 #endif