*/
/*
* This file is part of Lustre, http://www.lustre.org/
- * Lustre is a trademark of Sun Microsystems, Inc.
*
* libcfs/libcfs/debug.c
*
#include <linux/kthread.h>
#include <linux/stacktrace.h>
#include <linux/utsname.h>
+#include <linux/kallsyms.h>
#include "tracefile.h"
static char debug_file_name[1024];
MODULE_PARM_DESC(libcfs_subsystem_debug, "Lustre kernel debug subsystem mask");
unsigned int libcfs_debug = (D_CANTMASK | D_NETERROR | D_HA | D_CONFIG |
- D_IOCTL | D_LFSCK | D_TTY);
+ D_IOCTL | D_LFSCK);
EXPORT_SYMBOL(libcfs_debug);
module_param(libcfs_debug, int, 0644);
MODULE_PARM_DESC(libcfs_debug, "Lustre kernel debug mask");
#endif
MODULE_PARM_DESC(libcfs_console_min_delay, "Lustre kernel debug console min delay (jiffies)");
+#ifndef HAVE_PARAM_SET_UINT_MINMAX
static int param_set_uint_minmax(const char *val,
cfs_kernel_param_arg_t *kp,
unsigned int min, unsigned int max)
*((unsigned int *)kp->arg) = num;
return 0;
}
+#endif
static int param_set_uintpos(const char *val,
cfs_kernel_param_arg_t *kp)
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);
+atomic64_t libcfs_kmem = ATOMIC64_INIT(0);
+EXPORT_SYMBOL(libcfs_kmem);
static DECLARE_COMPLETION(debug_complete);
-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;
+char *libcfs_debug_file_path = LIBCFS_DEBUG_FILE_PATH_DEFAULT;
+EXPORT_SYMBOL(libcfs_debug_file_path);
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");
current_time = ktime_get_real_seconds();
- if (strncmp(libcfs_debug_file_path_arr, "NONE", 4) != 0 &&
+ if (strncmp(libcfs_debug_file_path, "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,
+ "%s.%lld.%ld", libcfs_debug_file_path,
(s64)current_time, (uintptr_t)arg);
pr_alert("LustreError: dumping log to %s\n", debug_file_name);
cfs_tracefile_dump_all_pages(debug_file_name);
} while (0)
#endif
+static void cfs_print_stack_trace(unsigned long *entries, unsigned int nr)
+{
+ unsigned int i;
+
+ /* Prefer %pB for backtraced symbolic names since it was added in:
+ * Linux v2.6.38-6557-g0f77a8d37825
+ * vsprintf: Introduce %pB format specifier
+ */
+ for (i = 0; i < nr; i++)
+ pr_info("[<0>] %pB\n", (void *)entries[i]);
+}
+
#define MAX_ST_ENTRIES 100
static DEFINE_SPINLOCK(st_lock);
static stack_trace_save_tsk_t *task_dump_stack;
#endif
-static void libcfs_call_trace(struct task_struct *tsk)
+void __init cfs_debug_init(void)
{
#ifdef CONFIG_ARCH_STACKWALK
- static unsigned long entries[MAX_ST_ENTRIES];
- unsigned int i, nr_entries;
+ task_dump_stack = (void *)
+ cfs_kallsyms_lookup_name("stack_trace_save_tsk");
+
+#endif
+}
- if (!task_dump_stack)
- task_dump_stack = (stack_trace_save_tsk_t *)
- symbol_get("stack_trace_save_tsk");
+static void libcfs_call_trace(struct task_struct *tsk)
+{
+ static unsigned long entries[MAX_ST_ENTRIES];
+#ifdef CONFIG_ARCH_STACKWALK
+ unsigned int nr_entries;
spin_lock(&st_lock);
pr_info("Pid: %d, comm: %.20s %s %s\n", tsk->pid, tsk->comm,
pr_info("Call Trace TBD:\n");
if (task_dump_stack) {
nr_entries = task_dump_stack(tsk, entries, MAX_ST_ENTRIES, 0);
- for (i = 0; i < nr_entries; i++)
- pr_info("[<0>] %pB\n", (void *)entries[i]);
+ cfs_print_stack_trace(entries, nr_entries);
}
spin_unlock(&st_lock);
#else
struct stack_trace trace;
- static unsigned long entries[MAX_ST_ENTRIES];
trace.nr_entries = 0;
trace.max_entries = MAX_ST_ENTRIES;
init_utsname()->release, init_utsname()->version);
pr_info("Call Trace:\n");
save_stack_trace_tsk(tsk, &trace);
- print_stack_trace(&trace, 0);
+ cfs_print_stack_trace(trace.entries, trace.nr_entries);
spin_unlock(&st_lock);
#endif
}
libcfs_panic_in_progress = 1;
mb();
+#ifdef LNET_DUMP_ON_PANIC
+ /* This is currently disabled because it spews far too much to the
+ * console on the rare cases it is ever triggered. */
+
+ if (in_interrupt()) {
+ cfs_trace_debug_print();
+ } else {
+ libcfs_debug_dumplog_internal((void *)(long)current->pid);
+ }
+#endif
return 0;
}
libcfs_console_min_delay = CDEBUG_DEFAULT_MIN_DELAY;
}
- if (libcfs_debug_file_path) {
- strlcpy(libcfs_debug_file_path_arr,
- libcfs_debug_file_path,
- sizeof(libcfs_debug_file_path_arr));
- }
-
/* If libcfs_debug_mb is uninitialized then just make the
* total buffers smp_num_cpus * TCD_MAX_PAGES
*/
#undef DEBUG_SUBSYSTEM
#define DEBUG_SUBSYSTEM S_LNET
-
-long libcfs_log_return(struct libcfs_debug_msg_data *msgdata, long rc)
-{
- libcfs_debug_msg(msgdata, "Process leaving (rc=%lu : %ld : %lx)\n",
- rc, rc, rc);
- return rc;
-}
-EXPORT_SYMBOL(libcfs_log_return);
-
-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