-/* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
- * vim:expandtab:shiftwidth=8:tabstop=8:
- *
+/*
* GPL HEADER START
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* 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.
+ *
+ * Copyright (c) 2012, Whamcloud, Inc.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
* Author: Phil Schwan <phil@clusterfs.com>
*/
-#ifndef EXPORT_SYMTAB
-# define EXPORT_SYMTAB
-#endif
-
#ifndef AUTOCONF_INCLUDED
#include <linux/config.h>
#endif
#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";
}
}
-void libcfs_run_lbug_upcall(const 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] = (char *)file;
- argv[3] = (char *)fn;
+ argv[2] = (char *)msgdata->msg_file;
+ argv[3] = (char *)msgdata->msg_fn;
argv[4] = buf;
argv[5] = NULL;
}
#ifdef __arch_um__
-void lbug_with_loc(const 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 - trying to dump log to %s\n", debug_file_path);
+ libcfs_debug_msg(msgdata, "LBUG - trying to dump log to %s\n",
+ libcfs_debug_file_path);
libcfs_debug_dumplog();
- libcfs_run_lbug_upcall(file, func, line);
+ libcfs_run_lbug_upcall(msgdata);
asm("int $3");
panic("LBUG");
}
#else
/* coverity[+kill] */
-void lbug_with_loc(const 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);
#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__)
CWARN("stack dump for pid %d (%d) requested; wake up gdb.\n",
tsk->pid, UML_PID(tsk));
//asm("int $3");
+#elif 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();
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);