-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
+/*
+ * GPL HEADER START
*
- * Copyright (C) 2002 Cluster File Systems, Inc.
- * Author: Phil Schwan <phil@clusterfs.com>
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
- * This file is part of Lustre, http://www.lustre.org.
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
*
- * Lustre is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
*
- * Lustre is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.gnu.org/licenses/gpl-2.0.html
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2011, 2017, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * libcfs/libcfs/debug.c
+ *
+ * Author: Phil Schwan <phil@clusterfs.com>
*
- * You should have received a copy of the GNU General Public License
- * along with Lustre; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
-
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
# define DEBUG_SUBSYSTEM S_LNET
-#include <stdarg.h>
+#include <linux/ctype.h>
+#include <linux/kthread.h>
#include <libcfs/libcfs.h>
#include "tracefile.h"
static char debug_file_name[1024];
-#ifdef __KERNEL__
unsigned int libcfs_subsystem_debug = ~0;
-CFS_MODULE_PARM(libcfs_subsystem_debug, "i", int, 0644,
- "Lustre kernel debug subsystem mask");
+module_param(libcfs_subsystem_debug, int, 0644);
+MODULE_PARM_DESC(libcfs_subsystem_debug, "Lustre kernel debug subsystem mask");
EXPORT_SYMBOL(libcfs_subsystem_debug);
-unsigned int libcfs_debug = (D_EMERG | D_ERROR | D_WARNING | D_CONSOLE |
- D_NETERROR | D_HA | D_CONFIG | D_IOCTL);
-CFS_MODULE_PARM(libcfs_debug, "i", int, 0644,
- "Lustre kernel debug mask");
+unsigned int libcfs_debug = (D_CANTMASK |
+ D_NETERROR | D_HA | D_CONFIG | D_IOCTL | D_LFSCK);
+module_param(libcfs_debug, int, 0644);
+MODULE_PARM_DESC(libcfs_debug, "Lustre kernel debug mask");
EXPORT_SYMBOL(libcfs_debug);
-int libcfs_debug_mb = -1;
-CFS_MODULE_PARM(libcfs_debug_mb, "i", int, 0644,
- "Total debug buffer size.");
-EXPORT_SYMBOL(libcfs_debug_mb);
+static int libcfs_param_debug_mb_set(const char *val,
+ cfs_kernel_param_arg_t *kp)
+{
+ int rc;
+ unsigned int num;
-unsigned int libcfs_printk = D_CANTMASK;
-CFS_MODULE_PARM(libcfs_printk, "i", uint, 0644,
- "Lustre kernel debug console mask");
-EXPORT_SYMBOL(libcfs_printk);
+ rc = kstrtouint(val, 0, &num);
+ if (rc < 0)
+ return rc;
-unsigned int libcfs_console_ratelimit = 1;
-CFS_MODULE_PARM(libcfs_console_ratelimit, "i", uint, 0644,
- "Lustre kernel debug console ratelimit (0 to disable)");
-EXPORT_SYMBOL(libcfs_console_ratelimit);
+/*
+ * RHEL6 does not support any kind of locking so we have to provide
+ * our own
+ */
+#if !defined(HAVE_MODULE_PARAM_LOCKING) && !defined(HAVE_KERNEL_PARAM_LOCK)
+ kernel_param_lock(THIS_MODULE);
+#endif
+ if (!*((unsigned int *)kp->arg)) {
+ *((unsigned int *)kp->arg) = num;
-cfs_duration_t libcfs_console_max_delay;
-CFS_MODULE_PARM(libcfs_console_max_delay, "l", ulong, 0644,
- "Lustre kernel debug console max delay (jiffies)");
-EXPORT_SYMBOL(libcfs_console_max_delay);
+#if !defined(HAVE_MODULE_PARAM_LOCKING) && !defined(HAVE_KERNEL_PARAM_LOCK)
+ kernel_param_unlock(THIS_MODULE);
+#endif
+ return 0;
+ }
-cfs_duration_t libcfs_console_min_delay;
-CFS_MODULE_PARM(libcfs_console_min_delay, "l", ulong, 0644,
- "Lustre kernel debug console min delay (jiffies)");
-EXPORT_SYMBOL(libcfs_console_min_delay);
+ rc = cfs_trace_set_debug_mb(num);
-unsigned int libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
-CFS_MODULE_PARM(libcfs_console_backoff, "i", uint, 0644,
- "Lustre kernel debug console backoff factor");
-EXPORT_SYMBOL(libcfs_console_backoff);
+ if (!rc)
+ *((unsigned int *)kp->arg) = cfs_trace_get_debug_mb();
-unsigned int libcfs_debug_binary = 1;
-EXPORT_SYMBOL(libcfs_debug_binary);
+#if !defined(HAVE_MODULE_PARAM_LOCKING) && !defined(HAVE_KERNEL_PARAM_LOCK)
+ kernel_param_unlock(THIS_MODULE);
+#endif
+ return rc;
+}
-unsigned int libcfs_stack;
-EXPORT_SYMBOL(libcfs_stack);
+/*
+ * While debug_mb setting look like unsigned int, in fact
+ * it needs quite a bunch of extra processing, so we define special
+ * debug_mb parameter type with corresponding methods to handle this case
+ */
+static struct kernel_param_ops param_ops_debug_mb = {
+ .set = libcfs_param_debug_mb_set,
+ .get = param_get_uint,
+};
-unsigned int portal_enter_debugger;
-EXPORT_SYMBOL(portal_enter_debugger);
+#define param_check_debug_mb(name, p) \
+ __param_check(name, p, unsigned int)
-unsigned int libcfs_catastrophe;
-EXPORT_SYMBOL(libcfs_catastrophe);
+static unsigned int libcfs_debug_mb;
+#ifdef HAVE_KERNEL_PARAM_OPS
+module_param(libcfs_debug_mb, debug_mb, 0644);
+#else
+module_param_call(libcfs_debug_mb, libcfs_param_debug_mb_set, param_get_uint,
+ ¶m_ops_debug_mb, 0644);
+#endif
+MODULE_PARM_DESC(libcfs_debug_mb, "Total debug buffer size.");
-unsigned int libcfs_panic_on_lbug = 0;
-CFS_MODULE_PARM(libcfs_panic_on_lbug, "i", uint, 0644,
- "Lustre kernel panic on LBUG");
-EXPORT_SYMBOL(libcfs_panic_on_lbug);
+unsigned int libcfs_printk = D_CANTMASK;
+module_param(libcfs_printk, uint, 0644);
+MODULE_PARM_DESC(libcfs_printk, "Lustre kernel debug console mask");
-atomic_t libcfs_kmemory = ATOMIC_INIT(0);
-EXPORT_SYMBOL(libcfs_kmemory);
+unsigned int libcfs_console_ratelimit = 1;
+module_param(libcfs_console_ratelimit, uint, 0644);
+MODULE_PARM_DESC(libcfs_console_ratelimit, "Lustre kernel debug console ratelimit (0 to disable)");
-static cfs_waitq_t debug_ctlwq;
+static int param_set_delay_minmax(const char *val,
+ cfs_kernel_param_arg_t *kp,
+ long min, long max)
+{
+ long d;
+ int sec;
+ int rc;
-#ifdef __arch_um__
-char debug_file_path[1024] = "/r/tmp/lustre-log";
-#else
-char debug_file_path[1024] = "/tmp/lustre-log";
-#endif
-CFS_MODULE_PARM(debug_file_path, "s", charp, 0644,
- "Path for dumping debug logs, "
- "set 'NONE' to prevent log dumping");
+ rc = kstrtoint(val, 0, &sec);
+ if (rc)
+ return -EINVAL;
-int libcfs_panic_in_progress;
+ /* The sysfs setting is in centiseconds */
+ d = cfs_time_seconds(sec) / 100;
+ if (d < min || d > max)
+ return -EINVAL;
-/* libcfs_debug_token2mask() expects the returned
- * string in lower-case */
-const char *
-libcfs_debug_subsys2str(int subsys)
-{
- switch (subsys) {
- default:
- return NULL;
- case S_UNDEFINED:
- return "undefined";
- case S_MDC:
- return "mdc";
- case S_MDS:
- return "mds";
- case S_OSC:
- return "osc";
- case S_OST:
- return "ost";
- case S_CLASS:
- return "class";
- case S_LOG:
- return "log";
- case S_LLITE:
- return "llite";
- case S_RPC:
- return "rpc";
- case S_LNET:
- return "lnet";
- case S_LND:
- return "lnd";
- case S_PINGER:
- return "pinger";
- case S_FILTER:
- return "filter";
- case S_ECHO:
- return "echo";
- case S_LDLM:
- return "ldlm";
- case S_LOV:
- return "lov";
- case S_LMV:
- return "lmv";
- case S_SEC:
- return "sec";
- case S_GSS:
- return "gss";
- case S_MGC:
- return "mgc";
- case S_MGS:
- return "mgs";
- case S_FID:
- return "fid";
- case S_FLD:
- return "fld";
- }
-}
+ *((unsigned int *)kp->arg) = d;
-/* libcfs_debug_token2mask() expects the returned
- * string in lower-case */
-const char *
-libcfs_debug_dbg2str(int debug)
-{
- switch (debug) {
- default:
- return NULL;
- case D_TRACE:
- return "trace";
- case D_INODE:
- return "inode";
- case D_SUPER:
- return "super";
- case D_EXT2:
- return "ext2";
- case D_MALLOC:
- return "malloc";
- case D_CACHE:
- return "cache";
- case D_INFO:
- return "info";
- case D_IOCTL:
- return "ioctl";
- case D_NETERROR:
- return "neterror";
- case D_NET:
- return "net";
- case D_WARNING:
- return "warning";
- case D_BUFFS:
- return "buffs";
- case D_OTHER:
- return "other";
- case D_DENTRY:
- return "dentry";
- case D_NETTRACE:
- return "nettrace";
- case D_PAGE:
- return "page";
- case D_DLMTRACE:
- return "dlmtrace";
- case D_ERROR:
- return "error";
- case D_EMERG:
- return "emerg";
- case D_HA:
- return "ha";
- case D_RPCTRACE:
- return "rpctrace";
- case D_VFSTRACE:
- return "vfstrace";
- case D_READA:
- return "reada";
- case D_MMAP:
- return "mmap";
- case D_CONFIG:
- return "config";
- case D_CONSOLE:
- return "console";
- case D_QUOTA:
- return "quota";
- case D_SEC:
- return "sec";
- }
+ return 0;
}
-int
-libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys)
+static int param_get_delay(char *buffer, cfs_kernel_param_arg_t *kp)
{
- const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
- libcfs_debug_dbg2str;
- int len = 0;
- const char *token;
- int bit;
- int i;
-
- if (mask == 0) { /* "0" */
- if (size > 0)
- str[0] = '0';
- len = 1;
- } else { /* space-separated tokens */
- for (i = 0; i < 32; i++) {
- bit = 1 << i;
-
- if ((mask & bit) == 0)
- continue;
-
- token = fn(bit);
- if (token == NULL) /* unused bit */
- continue;
-
- if (len > 0) { /* separator? */
- if (len < size)
- str[len] = ' ';
- len++;
- }
-
- while (*token != 0) {
- if (len < size)
- str[len] = *token;
- token++;
- len++;
- }
- }
- }
-
- /* terminate 'str' */
- if (len < size)
- str[len] = 0;
- else
- str[size - 1] = 0;
-
- return len;
-}
+ unsigned int d = *(unsigned int *)kp->arg;
-int
-libcfs_debug_token2mask(int *mask, const char *str, int len, int is_subsys)
-{
- const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
- libcfs_debug_dbg2str;
- int i;
- int j;
- int bit;
- const char *token;
-
- /* match against known tokens */
- for (i = 0; i < 32; i++) {
- bit = 1 << i;
-
- token = fn(bit);
- if (token == NULL) /* unused? */
- continue;
-
- /* strcasecmp */
- for (j = 0; ; j++) {
- if (j == len) { /* end of token */
- if (token[j] == 0) {
- *mask = bit;
- return 0;
- }
- break;
- }
-
- if (token[j] == 0)
- break;
-
- if (str[j] == token[j])
- continue;
-
- if (str[j] < 'A' || 'Z' < str[j])
- break;
-
- if (str[j] - 'A' + 'a' != token[j])
- break;
- }
- }
-
- return -EINVAL; /* no match */
+ return sprintf(buffer, "%lu", jiffies_to_msecs(d * 10) / MSEC_PER_SEC);
}
-int
-libcfs_debug_str2mask(int *mask, const char *str, int is_subsys)
-{
- int m = 0;
- char op = 0;
- int matched;
- int n;
- int t;
-
- /* Allow a number for backwards compatibility */
-
- for (n = strlen(str); n > 0; n--)
- if (!isspace(str[n-1]))
- break;
- matched = n;
-
- if ((t = sscanf(str, "%i%n", &m, &matched)) >= 1 &&
- matched == n) {
- *mask = m;
- return 0;
- }
-
- /* <str> must be a list of debug tokens or numbers separated by
- * whitespace and optionally an operator ('+' or '-'). If an operator
- * appears first in <str>, '*mask' is used as the starting point
- * (relative), otherwise 0 is used (absolute). An operator applies to
- * all following tokens up to the next operator. */
-
- matched = 0;
- while (*str != 0) {
- while (isspace(*str)) /* skip whitespace */
- str++;
-
- if (*str == 0)
- break;
-
- if (*str == '+' || *str == '-') {
- op = *str++;
-
- /* op on first token == relative */
- if (!matched)
- m = *mask;
-
- while (isspace(*str)) /* skip whitespace */
- str++;
-
- if (*str == 0) /* trailing op */
- return -EINVAL;
- }
-
- /* find token length */
- for (n = 0; str[n] != 0 && !isspace(str[n]); n++);
-
- /* match token */
- if (libcfs_debug_token2mask(&t, str, n, is_subsys) != 0)
- return -EINVAL;
-
- matched = 1;
- if (op == '-')
- m &= ~t;
- else
- m |= t;
-
- str += n;
- }
-
- if (!matched)
- return -EINVAL;
-
- *mask = m;
- return 0;
-}
+unsigned int libcfs_console_max_delay;
+unsigned int libcfs_console_min_delay;
-void libcfs_debug_dumplog_internal(void *arg)
+static int param_set_console_max_delay(const char *val,
+ cfs_kernel_param_arg_t *kp)
{
- CFS_DECL_JOURNAL_DATA;
-
- CFS_PUSH_JOURNAL;
-
- if (strncmp(debug_file_path, "NONE", 4) != 0) {
- snprintf(debug_file_name, sizeof(debug_file_name) - 1,
- "%s.%ld.%ld", debug_file_path, cfs_time_current_sec(),
- (long)arg);
- printk(KERN_ALERT "LustreError: dumping log to %s\n",
- debug_file_name);
- tracefile_dump_all_pages(debug_file_name);
- }
- CFS_POP_JOURNAL;
+ return param_set_delay_minmax(val, kp,
+ libcfs_console_min_delay, INT_MAX);
}
-int libcfs_debug_dumplog_thread(void *arg)
-{
- cfs_daemonize("");
- libcfs_debug_dumplog_internal(arg);
- cfs_waitq_signal(&debug_ctlwq);
- return 0;
-}
+static struct kernel_param_ops param_ops_console_max_delay = {
+ .set = param_set_console_max_delay,
+ .get = param_get_delay,
+};
-void libcfs_debug_dumplog(void)
-{
- int rc;
- cfs_waitlink_t wait;
- ENTRY;
-
- /* we're being careful to ensure that the kernel thread is
- * able to set our state to running as it exits before we
- * get to schedule() */
- cfs_waitlink_init(&wait);
- set_current_state(TASK_INTERRUPTIBLE);
- cfs_waitq_add(&debug_ctlwq, &wait);
-
- rc = cfs_kernel_thread(libcfs_debug_dumplog_thread,
- (void *)(long)cfs_curproc_pid(),
- CLONE_VM | CLONE_FS | CLONE_FILES);
- if (rc < 0)
- printk(KERN_ERR "LustreError: cannot start log dump thread: "
- "%d\n", rc);
- else
- cfs_waitq_wait(&wait, CFS_TASK_INTERRUPTIBLE);
-
- /* be sure to teardown if kernel_thread() failed */
- cfs_waitq_del(&debug_ctlwq, &wait);
- set_current_state(TASK_RUNNING);
-}
+#define param_check_console_max_delay(name, p) \
+ __param_check(name, p, unsigned int)
-int libcfs_debug_init(unsigned long bufsize)
-{
- int rc = 0;
- int max = libcfs_debug_mb;
-
- cfs_waitq_init(&debug_ctlwq);
- libcfs_console_max_delay = CDEBUG_DEFAULT_MAX_DELAY;
- libcfs_console_min_delay = CDEBUG_DEFAULT_MIN_DELAY;
- /* If libcfs_debug_mb is set to an invalid value or uninitialized
- * then just make the total buffers smp_num_cpus * TCD_MAX_PAGES */
- if (max > trace_max_debug_mb() || max < num_possible_cpus()) {
- max = TCD_MAX_PAGES;
- } else {
- max = (max / num_possible_cpus());
- max = (max << (20 - CFS_PAGE_SHIFT));
- }
- rc = tracefile_init(max);
-
- if (rc == 0)
- libcfs_register_panic_notifier();
-
- return rc;
-}
+#ifdef HAVE_KERNEL_PARAM_OPS
+module_param(libcfs_console_max_delay, console_max_delay, 0644);
+#else
+module_param_call(libcfs_console_max_delay, param_set_console_max_delay,
+ param_get_delay, ¶m_ops_console_max_delay, 0644);
+#endif
+MODULE_PARM_DESC(libcfs_console_max_delay, "Lustre kernel debug console max delay (jiffies)");
-int libcfs_debug_cleanup(void)
+static int param_set_console_min_delay(const char *val,
+ cfs_kernel_param_arg_t *kp)
{
- libcfs_unregister_panic_notifier();
- tracefile_exit();
- return 0;
+ return param_set_delay_minmax(val, kp,
+ 1, libcfs_console_max_delay);
}
-int libcfs_debug_clear_buffer(void)
-{
- trace_flush_pages();
- return 0;
-}
+static struct kernel_param_ops param_ops_console_min_delay = {
+ .set = param_set_console_min_delay,
+ .get = param_get_delay,
+};
-/* Debug markers, although printed by S_LNET
- * should not be be marked as such. */
-#undef DEBUG_SUBSYSTEM
-#define DEBUG_SUBSYSTEM S_UNDEFINED
-int libcfs_debug_mark_buffer(char *text)
+#define param_check_console_min_delay(name, p) \
+ __param_check(name, p, unsigned int)
+
+#ifdef HAVE_KERNEL_PARAM_OPS
+module_param(libcfs_console_min_delay, console_min_delay, 0644);
+#else
+module_param_call(libcfs_console_min_delay, param_set_console_min_delay,
+ param_get_delay, ¶m_ops_console_min_delay, 0644);
+#endif
+MODULE_PARM_DESC(libcfs_console_min_delay, "Lustre kernel debug console min delay (jiffies)");
+
+static int param_set_uint_minmax(const char *val,
+ cfs_kernel_param_arg_t *kp,
+ unsigned int min, unsigned int max)
{
- CDEBUG(D_TRACE,"***************************************************\n");
- CDEBUG(D_WARNING, "DEBUG MARKER: %s\n", text);
- CDEBUG(D_TRACE,"***************************************************\n");
+ unsigned int num;
+ int ret;
+
+ if (!val)
+ return -EINVAL;
+
+ ret = kstrtouint(val, 0, &num);
+ if (ret < 0 || num < min || num > max)
+ return -EINVAL;
- return 0;
+ *((unsigned int *)kp->arg) = num;
+ return 0;
}
-#undef DEBUG_SUBSYSTEM
-#define DEBUG_SUBSYSTEM S_LNET
-void libcfs_debug_set_level(unsigned int debug_level)
+static int param_set_uintpos(const char *val,
+ cfs_kernel_param_arg_t *kp)
{
- printk(KERN_WARNING "Lustre: Setting portals debug level to %08x\n",
- debug_level);
- libcfs_debug = debug_level;
+ return param_set_uint_minmax(val, kp, 1, -1);
}
-EXPORT_SYMBOL(libcfs_debug_dumplog);
-EXPORT_SYMBOL(libcfs_debug_set_level);
+static struct kernel_param_ops param_ops_uintpos = {
+ .set = param_set_uintpos,
+ .get = param_get_uint,
+};
+#define param_check_uintpos(name, p) \
+ __param_check(name, p, unsigned int)
-#else /* !__KERNEL__ */
+unsigned int libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
+#ifdef HAVE_KERNEL_PARAM_OPS
+module_param(libcfs_console_backoff, uintpos, 0644);
+#else
+module_param_call(libcfs_console_backoff, param_set_uintpos, param_get_uint,
+ ¶m_ops_uintpos, 0644);
+#endif
+MODULE_PARM_DESC(libcfs_console_backoff, "Lustre kernel debug console backoff factor");
-#include <libcfs/libcfs.h>
+unsigned int libcfs_debug_binary = 1;
-#ifdef HAVE_CATAMOUNT_DATA_H
-#include <catamount/data.h>
-#include <catamount/lputs.h>
+unsigned int libcfs_stack = 3 * THREAD_SIZE / 4;
+EXPORT_SYMBOL(libcfs_stack);
-static char source_nid[16];
-/* 0 indicates no messages to console, 1 is errors, > 1 is all debug messages */
-static int toconsole = 1;
-unsigned int libcfs_console_ratelimit = 1;
-cfs_duration_t libcfs_console_max_delay;
-cfs_duration_t libcfs_console_min_delay;
-unsigned int libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
-#else /* !HAVE_CATAMOUNT_DATA_H */
-#ifdef HAVE_NETDB_H
-#include <sys/utsname.h>
-#endif /* HAVE_NETDB_H */
-struct utsname *tmp_utsname;
-static char source_nid[sizeof(tmp_utsname->nodename)];
-#endif /* HAVE_CATAMOUNT_DATA_H */
-
-static int source_pid;
-int smp_processor_id = 1;
-char debug_file_path[1024];
-FILE *debug_file_fd;
-
-int portals_do_debug_dumplog(void *arg)
-{
- printf("Look in %s\n", debug_file_name);
- return 0;
-}
+unsigned int libcfs_catastrophe;
+EXPORT_SYMBOL(libcfs_catastrophe);
+unsigned int libcfs_watchdog_ratelimit = 300;
-void portals_debug_print(void)
-{
- return;
-}
+unsigned int libcfs_panic_on_lbug = 1;
+module_param(libcfs_panic_on_lbug, uint, 0644);
+MODULE_PARM_DESC(libcfs_panic_on_lbug, "Lustre kernel panic on LBUG");
+atomic_t libcfs_kmemory = ATOMIC_INIT(0);
+EXPORT_SYMBOL(libcfs_kmemory);
-void libcfs_debug_dumplog(void)
+static wait_queue_head_t debug_ctlwq;
+
+char libcfs_debug_file_path_arr[PATH_MAX] = LIBCFS_DEBUG_FILE_PATH_DEFAULT;
+EXPORT_SYMBOL(libcfs_debug_file_path_arr);
+
+/* We need to pass a pointer here, but elsewhere this must be a const */
+static char *libcfs_debug_file_path = LIBCFS_DEBUG_FILE_PATH_DEFAULT;
+module_param(libcfs_debug_file_path, charp, 0644);
+MODULE_PARM_DESC(libcfs_debug_file_path,
+ "Path for dumping debug logs, set 'NONE' to prevent log dumping");
+
+int libcfs_panic_in_progress;
+
+/*
+ * libcfs_debug_token2mask() expects the returned
+ * string in lower-case
+ */
+static const char *libcfs_debug_subsys2str(int subsys)
{
- printf("Look in %s\n", debug_file_name);
- return;
+ static const char *libcfs_debug_subsystems[] = LIBCFS_DEBUG_SUBSYS_NAMES;
+
+ if (subsys >= ARRAY_SIZE(libcfs_debug_subsystems))
+ return NULL;
+
+ return libcfs_debug_subsystems[subsys];
}
-int libcfs_debug_init(unsigned long bufsize)
+/*
+ * libcfs_debug_token2mask() expects the returned
+ * string in lower-case
+ */
+static const char *libcfs_debug_dbg2str(int debug)
{
- char *debug_mask = NULL;
- char *debug_subsys = NULL;
- char *debug_filename;
-
-#ifdef HAVE_CATAMOUNT_DATA_H
- char *debug_console = NULL;
- char *debug_ratelimit = NULL;
- char *debug_max_delay = NULL;
- char *debug_min_delay = NULL;
- char *debug_backoff = NULL;
-
- libcfs_console_max_delay = CDEBUG_DEFAULT_MAX_DELAY;
- libcfs_console_min_delay = CDEBUG_DEFAULT_MIN_DELAY;
-
- snprintf(source_nid, sizeof(source_nid) - 1, "%u", _my_pnid);
- source_pid = _my_pid;
-
- debug_console = getenv("LIBLUSTRE_DEBUG_CONSOLE");
- if (debug_console != NULL) {
- toconsole = strtoul(debug_console, NULL, 0);
- CDEBUG(D_INFO, "set liblustre toconsole to %u\n", toconsole);
- }
- debug_ratelimit = getenv("LIBLUSTRE_DEBUG_CONSOLE_RATELIMIT");
- if (debug_ratelimit != NULL) {
- libcfs_console_ratelimit = strtoul(debug_ratelimit, NULL, 0);
- CDEBUG(D_INFO, "set liblustre console ratelimit to %u\n",
- libcfs_console_ratelimit);
- }
- debug_max_delay = getenv("LIBLUSTRE_DEBUG_CONSOLE_MAX_DELAY");
- if (debug_max_delay != NULL)
- libcfs_console_max_delay =
- cfs_time_seconds(strtoul(debug_max_delay, NULL, 0));
- debug_min_delay = getenv("LIBLUSTRE_DEBUG_CONSOLE_MIN_DELAY");
- if (debug_min_delay != NULL)
- libcfs_console_min_delay =
- cfs_time_seconds(strtoul(debug_min_delay, NULL, 0));
- if (debug_min_delay || debug_max_delay) {
- if (!libcfs_console_max_delay || !libcfs_console_min_delay ||
- libcfs_console_max_delay < libcfs_console_min_delay) {
- libcfs_console_max_delay = CDEBUG_DEFAULT_MAX_DELAY;
- libcfs_console_min_delay = CDEBUG_DEFAULT_MIN_DELAY;
- CDEBUG(D_INFO, "LIBLUSTRE_DEBUG_CONSOLE_MAX_DELAY "
- "should be greater than "
- "LIBLUSTRE_DEBUG_CONSOLE_MIN_DELAY "
- "and both parameters should be non-null"
- ": restore default values\n");
- } else {
- CDEBUG(D_INFO, "set liblustre console max delay to %lus"
- " and min delay to %lus\n",
- (cfs_duration_t)
- cfs_duration_sec(libcfs_console_max_delay),
- (cfs_duration_t)
- cfs_duration_sec(libcfs_console_min_delay));
- }
- }
- debug_backoff = getenv("LIBLUSTRE_DEBUG_CONSOLE_BACKOFF");
- if (debug_backoff != NULL) {
- libcfs_console_backoff = strtoul(debug_backoff, NULL, 0);
- if (libcfs_console_backoff <= 0) {
- libcfs_console_backoff = CDEBUG_DEFAULT_BACKOFF;
- CDEBUG(D_INFO, "LIBLUSTRE_DEBUG_CONSOLE_BACKOFF <= 0: "
- "restore default value\n");
- } else {
- CDEBUG(D_INFO, "set liblustre console backoff to %u\n",
- libcfs_console_backoff);
- }
- }
-#else
- struct utsname myname;
+ static const char *libcfs_debug_masks[] = LIBCFS_DEBUG_MASKS_NAMES;
- if (uname(&myname) == 0)
- strcpy(source_nid, myname.nodename);
- source_pid = getpid();
-#endif
- /* debug masks */
- debug_mask = getenv("LIBLUSTRE_DEBUG_MASK");
- if (debug_mask)
- libcfs_debug = (unsigned int) strtol(debug_mask, NULL, 0);
-
- debug_subsys = getenv("LIBLUSTRE_DEBUG_SUBSYS");
- if (debug_subsys)
- libcfs_subsystem_debug =
- (unsigned int) strtol(debug_subsys, NULL, 0);
-
- debug_filename = getenv("LIBLUSTRE_DEBUG_BASE");
- if (debug_filename)
- strncpy(debug_file_path,debug_filename,sizeof(debug_file_path));
-
- debug_filename = getenv("LIBLUSTRE_DEBUG_FILE");
- if (debug_filename)
- strncpy(debug_file_name,debug_filename,sizeof(debug_file_name));
-
- if (debug_file_name[0] == '\0' && debug_file_path[0] != '\0')
- snprintf(debug_file_name, sizeof(debug_file_name) - 1,
- "%s-%s-"CFS_TIME_T".log", debug_file_path, source_nid, time(0));
-
- if (strcmp(debug_file_name, "stdout") == 0 ||
- strcmp(debug_file_name, "-") == 0) {
- debug_file_fd = stdout;
- } else if (strcmp(debug_file_name, "stderr") == 0) {
- debug_file_fd = stderr;
- } else if (debug_file_name[0] != '\0') {
- debug_file_fd = fopen(debug_file_name, "w");
- if (debug_file_fd == NULL)
- fprintf(stderr, "%s: unable to open '%s': %s\n",
- source_nid, debug_file_name, strerror(errno));
- }
-
- if (debug_file_fd == NULL)
- debug_file_fd = stdout;
-
- return 0;
+ if (debug >= ARRAY_SIZE(libcfs_debug_masks))
+ return NULL;
+
+ return libcfs_debug_masks[debug];
}
-int libcfs_debug_cleanup(void)
+int
+libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys)
{
- if (debug_file_fd != stdout && debug_file_fd != stderr)
- fclose(debug_file_fd);
- return 0;
+ const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
+ libcfs_debug_dbg2str;
+ int len = 0;
+ const char *token;
+ int i;
+
+ if (mask == 0) { /* "0" */
+ if (size > 0)
+ str[0] = '0';
+ len = 1;
+ } else { /* space-separated tokens */
+ for (i = 0; i < 32; i++) {
+ if ((mask & (1 << i)) == 0)
+ continue;
+
+ token = fn(i);
+ if (token == NULL) /* unused bit */
+ continue;
+
+ if (len > 0) { /* separator? */
+ if (len < size)
+ str[len] = ' ';
+ len++;
+ }
+
+ while (*token != 0) {
+ if (len < size)
+ str[len] = *token;
+ token++;
+ len++;
+ }
+ }
+ }
+
+ /* terminate 'str' */
+ if (len < size)
+ str[len] = 0;
+ else
+ str[size - 1] = 0;
+
+ return len;
}
-int libcfs_debug_clear_buffer(void)
+int
+libcfs_debug_str2mask(int *mask, const char *str, int is_subsys)
{
- return 0;
+ const char *(*fn)(int bit) = is_subsys ? libcfs_debug_subsys2str :
+ libcfs_debug_dbg2str;
+ int m = 0;
+ int matched;
+ int n;
+ int t;
+
+ /* Allow a number for backwards compatibility */
+ for (n = strlen(str); n > 0; n--)
+ if (!isspace(str[n-1]))
+ break;
+ matched = n;
+
+ t = sscanf(str, "%i%n", &m, &matched);
+ if (t >= 1 && matched == n) {
+ /* don't print warning for lctl set_param debug=0 or -1 */
+ if (m != 0 && m != -1)
+ CWARN("You are trying to use a numerical value for the "
+ "mask - this will be deprecated in a future "
+ "release.\n");
+ *mask = m;
+ return 0;
+ }
+
+ return cfs_str2mask(str, fn, mask, is_subsys ? 0 : D_CANTMASK,
+ 0xffffffff);
}
-int libcfs_debug_mark_buffer(char *text)
+/**
+ * Dump Lustre log to ::debug_file_path by calling tracefile_dump_all_pages()
+ */
+void libcfs_debug_dumplog_internal(void *arg)
{
+ static time64_t last_dump_time;
+ time64_t current_time;
+ void *journal_info;
+
+ journal_info = current->journal_info;
+ current->journal_info = NULL;
+ current_time = ktime_get_real_seconds();
+
+ if (strncmp(libcfs_debug_file_path_arr, "NONE", 4) != 0 &&
+ current_time > last_dump_time) {
+ last_dump_time = current_time;
+ snprintf(debug_file_name, sizeof(debug_file_name) - 1,
+ "%s.%lld.%ld", libcfs_debug_file_path_arr,
+ (s64)current_time, (uintptr_t)arg);
+ printk(KERN_ALERT "LustreError: dumping log to %s\n",
+ debug_file_name);
+ cfs_tracefile_dump_all_pages(debug_file_name);
+ libcfs_run_debug_log_upcall(debug_file_name);
+ }
+ current->journal_info = journal_info;
+}
- fprintf(debug_file_fd, "*******************************************************************************\n");
- fprintf(debug_file_fd, "DEBUG MARKER: %s\n", text);
- fprintf(debug_file_fd, "*******************************************************************************\n");
-
- return 0;
+static int libcfs_debug_dumplog_thread(void *arg)
+{
+ libcfs_debug_dumplog_internal(arg);
+ wake_up(&debug_ctlwq);
+ return 0;
}
-#ifdef HAVE_CATAMOUNT_DATA_H
-#define CATAMOUNT_MAXLINE (256-4)
-void catamount_printline(char *buf, size_t size)
+void libcfs_debug_dumplog(void)
{
- char *pos = buf;
- int prsize = size;
-
- while (prsize > 0){
- lputs(pos);
- pos += CATAMOUNT_MAXLINE;
- prsize -= CATAMOUNT_MAXLINE;
- }
+ wait_queue_entry_t wait;
+ struct task_struct *dumper;
+
+ ENTRY;
+
+ /*
+ * we're being careful to ensure that the kernel thread is
+ * able to set our state to running as it exits before we
+ * get to schedule()
+ */
+ init_waitqueue_entry(&wait, current);
+ set_current_state(TASK_INTERRUPTIBLE);
+ add_wait_queue(&debug_ctlwq, &wait);
+
+ dumper = kthread_run(libcfs_debug_dumplog_thread,
+ (void *)(long)current_pid(),
+ "libcfs_debug_dumper");
+ if (IS_ERR(dumper))
+ printk(KERN_ERR "LustreError: cannot start log dump thread:"
+ " %ld\n", PTR_ERR(dumper));
+ else
+ schedule();
+
+ /* be sure to teardown if cfs_create_thread() failed */
+ remove_wait_queue(&debug_ctlwq, &wait);
+ set_current_state(TASK_RUNNING);
}
-#endif
+EXPORT_SYMBOL(libcfs_debug_dumplog);
-int
-libcfs_debug_vmsg2(cfs_debug_limit_state_t *cdls,
- int subsys, int mask,
- const char *file, const char *fn, const int line,
- const char *format1, va_list args,
- const char *format2, ...)
+int libcfs_debug_init(unsigned long bufsize)
{
- struct timeval tv;
- int nob;
- int remain;
- va_list ap;
- char buf[CFS_PAGE_SIZE]; /* size 4096 used for compatimble
- * with linux, where message can`t
- * be exceed PAGE_SIZE */
- int console = 0;
- char *prefix = "Lustre";
-
-#ifdef HAVE_CATAMOUNT_DATA_H
- /* toconsole == 0 - all messages to debug_file_fd
- * toconsole == 1 - warnings to console, all to debug_file_fd
- * toconsole > 1 - all debug to console */
- if (((mask & libcfs_printk) && toconsole == 1) || toconsole > 1)
- console = 1;
-#endif
+ int rc = 0;
+ unsigned int max = libcfs_debug_mb;
+
+ init_waitqueue_head(&debug_ctlwq);
+
+ if (libcfs_console_max_delay <= 0 || /* not set by user or */
+ libcfs_console_min_delay <= 0 || /* set to invalid values */
+ libcfs_console_min_delay >= libcfs_console_max_delay) {
+ libcfs_console_max_delay = CDEBUG_DEFAULT_MAX_DELAY;
+ libcfs_console_min_delay = CDEBUG_DEFAULT_MIN_DELAY;
+ }
+
+ if (libcfs_debug_file_path != NULL) {
+ strlcpy(libcfs_debug_file_path_arr,
+ libcfs_debug_file_path,
+ sizeof(libcfs_debug_file_path_arr));
+ }
+
+ /*
+ * If libcfs_debug_mb is set to an invalid value or uninitialized
+ * then just make the total buffers smp_num_cpus * TCD_MAX_PAGES
+ */
+ if (max > cfs_trace_max_debug_mb() || max < num_possible_cpus()) {
+ max = TCD_MAX_PAGES;
+ } else {
+ max = (max / num_possible_cpus());
+ max = (max << (20 - PAGE_SHIFT));
+ }
+
+ rc = cfs_tracefile_init(max);
+ if (rc)
+ return rc;
+
+ libcfs_register_panic_notifier();
+ kernel_param_lock(THIS_MODULE);
+ libcfs_debug_mb = cfs_trace_get_debug_mb();
+ kernel_param_unlock(THIS_MODULE);
+ return rc;
+}
- if ((!console) && (!debug_file_fd)) {
- return 0;
- }
-
- if (mask & (D_EMERG | D_ERROR))
- prefix = "LustreError";
-
- nob = snprintf(buf, sizeof(buf), "%s: %u-%s:(%s:%d:%s()): ", prefix,
- source_pid, source_nid, file, line, fn);
-
- remain = sizeof(buf) - nob;
- if (format1) {
- nob += vsnprintf(&buf[nob], remain, format1, args);
- }
-
- remain = sizeof(buf) - nob;
- if ((format2) && (remain > 0)) {
- va_start(ap, format2);
- nob += vsnprintf(&buf[nob], remain, format2, ap);
- va_end(ap);
- }
-
-#ifdef HAVE_CATAMOUNT_DATA_H
- if (console) {
- /* check rate limit for console */
- if (cdls != NULL) {
- if (libcfs_console_ratelimit &&
- cdls->cdls_next != 0 && /* not first time ever */
- !cfs_time_after(cfs_time_current(), cdls->cdls_next)) {
-
- /* skipping a console message */
- cdls->cdls_count++;
- goto out_file;
- }
-
- if (cfs_time_after(cfs_time_current(), cdls->cdls_next +
- libcfs_console_max_delay +
- cfs_time_seconds(10))) {
- /* last timeout was a long time ago */
- cdls->cdls_delay /= libcfs_console_backoff * 4;
- } else {
- cdls->cdls_delay *= libcfs_console_backoff;
-
- if (cdls->cdls_delay <
- libcfs_console_min_delay)
- cdls->cdls_delay =
- libcfs_console_min_delay;
- else if (cdls->cdls_delay >
- libcfs_console_max_delay)
- cdls->cdls_delay =
- libcfs_console_max_delay;
- }
-
- /* ensure cdls_next is never zero after it's been seen */
- cdls->cdls_next = (cfs_time_current() + cdls->cdls_delay) | 1;
- }
-
- if (cdls != NULL && cdls->cdls_count != 0) {
- char buf2[100];
-
- nob = snprintf(buf2, sizeof(buf2),
- "Skipped %d previous similar message%s\n",
- cdls->cdls_count, (cdls->cdls_count > 1) ? "s" : "");
-
- catamount_printline(buf2, nob);
- cdls->cdls_count = 0;
- goto out_file;
- }
- catamount_printline(buf, nob);
- }
-out_file:
- /* return on toconsole > 1, as we don't want the user getting
- * spammed by the debug data */
- if (toconsole > 1)
- return 0;
-#endif
- if (debug_file_fd == NULL)
- return 0;
+int libcfs_debug_cleanup(void)
+{
+ libcfs_unregister_panic_notifier();
+ kernel_param_lock(THIS_MODULE);
+ cfs_tracefile_exit();
+ kernel_param_unlock(THIS_MODULE);
+ return 0;
+}
- gettimeofday(&tv, NULL);
+int libcfs_debug_clear_buffer(void)
+{
+ cfs_trace_flush_pages();
+ return 0;
+}
- fprintf(debug_file_fd, CFS_TIME_T".%06lu:%u:%s:(%s:%d:%s()): %s",
- tv.tv_sec, tv.tv_usec, source_pid, source_nid,
- file, line, fn, buf);
+/*
+ * Debug markers, although printed by S_LNET
+ * should not be be marked as such.
+ */
+#undef DEBUG_SUBSYSTEM
+#define DEBUG_SUBSYSTEM S_UNDEFINED
+int libcfs_debug_mark_buffer(const char *text)
+{
+ CDEBUG(D_TRACE, "**************************************************\n");
+ LCONSOLE(D_WARNING, "DEBUG MARKER: %s\n", text);
+ CDEBUG(D_TRACE, "**************************************************\n");
- return 0;
+ return 0;
}
+#undef DEBUG_SUBSYSTEM
+#define DEBUG_SUBSYSTEM S_LNET
-void
-libcfs_assertion_failed(const char *expr, const char *file, const char *func,
- const int line)
+long libcfs_log_return(struct libcfs_debug_msg_data *msgdata, long rc)
{
- libcfs_debug_msg(NULL, 0, D_EMERG, file, func, line,
- "ASSERTION(%s) failed\n", expr);
- abort();
+ libcfs_debug_msg(msgdata, "Process leaving (rc=%lu : %ld : %lx)\n",
+ rc, rc, rc);
+ return rc;
}
+EXPORT_SYMBOL(libcfs_log_return);
-#endif /* __KERNEL__ */
+void libcfs_log_goto(struct libcfs_debug_msg_data *msgdata, const char *label,
+ long rc)
+{
+ libcfs_debug_msg(msgdata, "Process leaving via %s (rc=%lu : %ld"
+ " : %#lx)\n", label, rc, rc, rc);
+}
+EXPORT_SYMBOL(libcfs_log_goto);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff