-/* -*- 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.sun.com/software/products/lustre/docs/GPLv2.pdf
*
- * 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.
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ *
+ * Copyright (c) 2012, 2013, Intel Corporation.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ *
+ * libcfs/libcfs/linux/linux-debug.c
+ *
+ * Author: Phil Schwan <phil@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
-#ifndef AUTOCONF_INCLUDED
-#include <linux/config.h>
-#endif
#include <linux/module.h>
#include <linux/kmod.h>
#include <linux/notifier.h>
#include <linux/string.h>
#include <linux/stat.h>
#include <linux/errno.h>
+#ifdef HAVE_KERNEL_LOCKED
#include <linux/smp_lock.h>
+#endif
#include <linux/unistd.h>
#include <linux/interrupt.h>
-#include <asm/system.h>
#include <asm/uaccess.h>
#include <linux/completion.h>
# define DEBUG_SUBSYSTEM S_LNET
-#include <libcfs/kp30.h>
-#include <libcfs/linux/portals_compat25.h>
#include <libcfs/libcfs.h>
+#include <libcfs/linux/portals_compat25.h>
#include "tracefile.h"
-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
#include <linux/kallsyms.h>
-#endif
char lnet_upcall[1024] = "/usr/lib/lustre/lnet_upcall";
+char lnet_debug_log_upcall[1024] = "/usr/lib/lustre/lnet_debug_log_upcall";
+
+/**
+ * Upcall function once a Lustre log has been dumped.
+ *
+ * \param file path of the dumped log
+ */
+void libcfs_run_debug_log_upcall(char *file)
+{
+ char *argv[3];
+ int rc;
+ char *envp[] = {
+ "HOME=/",
+ "PATH=/sbin:/bin:/usr/sbin:/usr/bin",
+ NULL};
+ ENTRY;
+
+ argv[0] = lnet_debug_log_upcall;
+
+ LASSERTF(file != NULL, "called on a null filename\n");
+ argv[1] = file; //only need to pass the path of the file
+
+ argv[2] = NULL;
+
+ rc = call_usermodehelper(argv[0], argv, envp, 1);
+ if (rc < 0 && rc != -ENOENT) {
+ CERROR("Error %d invoking LNET debug log upcall %s %s; "
+ "check /proc/sys/lnet/debug_log_upcall\n",
+ rc, argv[0], argv[1]);
+ } else {
+ CDEBUG(D_HA, "Invoked LNET debug log upcall %s %s\n",
+ argv[0], argv[1]);
+ }
+
+ EXIT;
+}
void libcfs_run_upcall(char **argv)
{
LASSERT(argc >= 2);
- rc = USERMODEHELPER(argv[0], argv, envp);
+ rc = call_usermodehelper(argv[0], argv, envp, 1);
if (rc < 0 && rc != -ENOENT) {
CERROR("Error %d invoking LNET upcall %s %s%s%s%s%s%s%s%s; "
"check /proc/sys/lnet/upcall\n",
}
}
-void libcfs_run_lbug_upcall(char *file, const char *fn, const int line)
+void libcfs_run_lbug_upcall(struct libcfs_debug_msg_data *msgdata)
{
char *argv[6];
char buf[32];
ENTRY;
- snprintf (buf, sizeof buf, "%d", line);
+ snprintf (buf, sizeof buf, "%d", msgdata->msg_line);
argv[1] = "LBUG";
- argv[2] = file;
- argv[3] = (char *)fn;
+ argv[2] = (char *)msgdata->msg_file;
+ argv[3] = (char *)msgdata->msg_fn;
argv[4] = buf;
argv[5] = NULL;
libcfs_run_upcall (argv);
}
-#ifdef __arch_um__
-void lbug_with_loc(char *file, const char *func, const int line)
-{
- libcfs_catastrophe = 1;
- libcfs_debug_msg(NULL, 0, D_EMERG, file, func, line,
- "LBUG - trying to dump log to %s\n", debug_file_path);
- libcfs_debug_dumplog();
- libcfs_run_lbug_upcall(file, func, line);
- asm("int $3");
- panic("LBUG");
-}
-#else
/* coverity[+kill] */
-void lbug_with_loc(char *file, const char *func, const int line)
+void lbug_with_loc(struct libcfs_debug_msg_data *msgdata)
{
libcfs_catastrophe = 1;
- libcfs_debug_msg(NULL, 0, D_EMERG, file, func, line, "LBUG\n");
+ libcfs_debug_msg(msgdata, "LBUG\n");
if (in_interrupt()) {
panic("LBUG in interrupt.\n");
}
libcfs_debug_dumpstack(NULL);
- libcfs_debug_dumplog();
- libcfs_run_lbug_upcall(file, func, line);
+ if (!libcfs_panic_on_lbug)
+ libcfs_debug_dumplog();
+ libcfs_run_lbug_upcall(msgdata);
if (libcfs_panic_on_lbug)
panic("LBUG");
set_task_state(current, TASK_UNINTERRUPTIBLE);
while (1)
schedule();
}
-#endif /* __arch_um__ */
#ifdef __KERNEL__
+#ifdef HAVE_DUMP_TRACE
+#include <linux/nmi.h>
+#include <asm/stacktrace.h>
+
+#ifdef HAVE_STACKTRACE_WARNING
+static void
+print_trace_warning_symbol(void *data, char *msg, unsigned long symbol)
+{
+ printk("%s", (char *)data);
+ print_symbol(msg, symbol);
+ printk("\n");
+}
+
+static void print_trace_warning(void *data, char *msg)
+{
+ printk("%s%s\n", (char *)data, msg);
+}
+#endif
+
+static int print_trace_stack(void *data, char *name)
+{
+ printk(" <%s> ", name);
+ return 0;
+}
+
+#ifdef HAVE_TRACE_ADDRESS_RELIABLE
+# define RELIABLE reliable
+# define DUMP_TRACE_CONST const
+static void print_trace_address(void *data, unsigned long addr, int reliable)
+#else
+/* before 2.6.24 there was no reliable arg */
+# define RELIABLE 1
+# define DUMP_TRACE_CONST
+static void print_trace_address(void *data, unsigned long addr)
+#endif
+{
+ char fmt[32];
+ touch_nmi_watchdog();
+ sprintf(fmt, " [<%016lx>] %s%%s\n", addr, RELIABLE ? "": "? ");
+ __print_symbol(fmt, addr);
+}
+
+static DUMP_TRACE_CONST struct stacktrace_ops print_trace_ops = {
+#ifdef HAVE_STACKTRACE_WARNING
+ .warning = print_trace_warning,
+ .warning_symbol = print_trace_warning_symbol,
+#endif
+ .stack = print_trace_stack,
+ .address = print_trace_address,
+#ifdef STACKTRACE_OPS_HAVE_WALK_STACK
+ .walk_stack = print_context_stack,
+#endif
+};
+#endif
+
void libcfs_debug_dumpstack(struct task_struct *tsk)
{
-#if defined(__arch_um__)
- if (tsk != NULL)
- CWARN("stack dump for pid %d (%d) requested; wake up gdb.\n",
- tsk->pid, UML_PID(tsk));
- //asm("int $3");
+#if defined(HAVE_DUMP_TRACE)
+ /* dump_stack() */
+ /* show_trace() */
+ if (tsk == NULL)
+ tsk = current;
+ printk("Pid: %d, comm: %.20s\n", tsk->pid, tsk->comm);
+ /* show_trace_log_lvl() */
+ printk("\nCall Trace:\n");
+ dump_trace(tsk, NULL, NULL,
+#ifdef HAVE_DUMP_TRACE_ADDRESS
+ 0,
+#endif /* HAVE_DUMP_TRACE_ADDRESS */
+ &print_trace_ops, NULL);
+ printk("\n");
#elif defined(HAVE_SHOW_TASK)
/* this is exported by lustre kernel version 42 */
extern void show_task(struct task_struct *);
* console on the rare cases it is ever triggered. */
if (in_interrupt()) {
- trace_debug_print();
+ cfs_trace_debug_print();
} else {
- while (current->lock_depth >= 0)
- unlock_kernel();
-
+# ifdef HAVE_KERNEL_LOCKED
+ while (kernel_locked())
+ unlock_kernel();
+# endif
libcfs_debug_dumplog_internal((void *)(long)cfs_curproc_pid());
}
#endif
void libcfs_register_panic_notifier(void)
{
-#ifdef HAVE_ATOMIC_PANIC_NOTIFIER
atomic_notifier_chain_register(&panic_notifier_list, &libcfs_panic_notifier);
-#else
- notifier_chain_register(&panic_notifier_list, &libcfs_panic_notifier);
-#endif
}
void libcfs_unregister_panic_notifier(void)
{
-#ifdef HAVE_ATOMIC_PANIC_NOTIFIER
atomic_notifier_chain_unregister(&panic_notifier_list, &libcfs_panic_notifier);
-#else
- notifier_chain_unregister(&panic_notifier_list, &libcfs_panic_notifier);
-#endif
}
EXPORT_SYMBOL(libcfs_debug_dumpstack);
git://git.whamcloud.com / fs / lustre-release.git / blobdiff