-/* -*- 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.
/*
* 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/
* 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/libcfs.h>
-#include <libcfs/linux/portals_compat25.h>
#include "tracefile.h"
argv[2] = NULL;
- rc = USERMODEHELPER(argv[0], argv, envp);
+ 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",
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(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;
libcfs_run_upcall (argv);
}
-#ifdef __arch_um__
-void lbug_with_loc(const 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",
- libcfs_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(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);
if (!libcfs_panic_on_lbug)
libcfs_debug_dumplog();
- libcfs_run_lbug_upcall(file, func, line);
+ 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
+#ifdef CONFIG_X86
#include <linux/nmi.h>
#include <asm/stacktrace.h>
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];
+ char fmt[32];
+
touch_nmi_watchdog();
- sprintf(fmt, " [<%016lx>] %s%%s\n", addr, RELIABLE ? "": "? ");
+ sprintf(fmt, " [<%016lx>] %s%%s\n", addr, reliable ? "": "? ");
__print_symbol(fmt, addr);
}
-static DUMP_TRACE_CONST struct stacktrace_ops print_trace_ops = {
+static const struct stacktrace_ops print_trace_ops = {
#ifdef HAVE_STACKTRACE_WARNING
.warning = print_trace_warning,
.warning_symbol = print_trace_warning_symbol,
.walk_stack = print_context_stack,
#endif
};
-#endif
+
+static void libcfs_call_trace(struct task_struct *tsk)
+{
+ dump_trace(tsk, NULL, NULL,
+#ifdef HAVE_DUMP_TRACE_ADDRESS
+ 0,
+#endif /* HAVE_DUMP_TRACE_ADDRESS */
+ &print_trace_ops, NULL);
+ printk("\n");
+}
+
+#else /* !CONFIG_X86 */
+
+static void libcfs_call_trace(struct task_struct *tsk)
+{
+ if ((tsk == NULL) || (tsk == current))
+ dump_stack();
+ else
+ CWARN("can't show stack: kernel doesn't export show_task\n");
+}
+
+#endif /* CONFIG_X86 */
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");
-#elif defined(HAVE_DUMP_TRACE)
/* dump_stack() */
/* show_trace() */
if (tsk == NULL)
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 *);
-
- if (tsk == NULL)
- tsk = current;
- CWARN("showing stack for process %d\n", tsk->pid);
- show_task(tsk);
-#else
- if ((tsk == NULL) || (tsk == current))
- dump_stack();
- else
- CWARN("can't show stack: kernel doesn't export show_task\n");
-#endif
+ libcfs_call_trace(tsk);
}
-cfs_task_t *libcfs_current(void)
+struct task_struct *libcfs_current(void)
{
CWARN("current task struct is %p\n", current);
return current;
if (in_interrupt()) {
cfs_trace_debug_print();
} else {
- while (current->lock_depth >= 0)
- unlock_kernel();
-
- libcfs_debug_dumplog_internal((void *)(long)cfs_curproc_pid());
+#ifdef HAVE_KERNEL_LOCKED
+ while (kernel_locked())
+ unlock_kernel();
+#endif
+ libcfs_debug_dumplog_internal((void *)(long)current_pid());
}
#endif
return 0;
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);