* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
* Use is subject to license terms.
*
- * Copyright (c) 2012, 2014, Intel Corporation.
+ * Copyright (c) 2012, 2017, Intel Corporation.
*/
/*
* This file is part of Lustre, http://www.lustre.org/
#ifndef __LIBCFS_DEBUG_H__
#define __LIBCFS_DEBUG_H__
+#include <linux/limits.h>
#include <uapi/linux/lnet/libcfs_debug.h>
/*
extern unsigned int libcfs_stack;
extern unsigned int libcfs_debug;
extern unsigned int libcfs_printk;
-extern unsigned int libcfs_console_ratelimit;
extern unsigned int libcfs_watchdog_ratelimit;
+extern unsigned int libcfs_console_ratelimit;
extern unsigned int libcfs_console_max_delay;
extern unsigned int libcfs_console_min_delay;
extern unsigned int libcfs_console_backoff;
extern unsigned int libcfs_debug_binary;
-extern char libcfs_debug_file_path_arr[PATH_MAX];
+extern char *libcfs_debug_file_path;
+
+struct task_struct;
int libcfs_debug_mask2str(char *str, int size, int mask, int is_subsys);
int libcfs_debug_str2mask(int *mask, const char *str, int is_subsys);
+void libcfs_debug_dumpstack(struct task_struct *tsk);
/* Has there been an LBUG? */
extern unsigned int libcfs_catastrophe;
struct cfs_debug_limit_state *msg_cdls;
};
-#define LIBCFS_DEBUG_MSG_DATA_INIT(data, mask, cdls) \
-do { \
- (data)->msg_subsys = DEBUG_SUBSYSTEM; \
- (data)->msg_file = __FILE__; \
- (data)->msg_fn = __FUNCTION__; \
- (data)->msg_line = __LINE__; \
- (data)->msg_cdls = (cdls); \
- (data)->msg_mask = (mask); \
+#define LIBCFS_DEBUG_MSG_DATA_INIT(file, func, line, msgdata, mask, cdls)\
+do { \
+ (msgdata)->msg_subsys = DEBUG_SUBSYSTEM; \
+ (msgdata)->msg_file = (file); \
+ (msgdata)->msg_fn = (func); \
+ (msgdata)->msg_line = (line); \
+ (msgdata)->msg_mask = (mask); \
+ (msgdata)->msg_cdls = (cdls); \
} while (0)
-#define LIBCFS_DEBUG_MSG_DATA_DECL(dataname, mask, cdls) \
- static struct libcfs_debug_msg_data dataname = { \
- .msg_subsys = DEBUG_SUBSYSTEM, \
- .msg_file = __FILE__, \
- .msg_fn = __FUNCTION__, \
- .msg_line = __LINE__, \
- .msg_cdls = (cdls) }; \
- dataname.msg_mask = (mask);
+#define LIBCFS_DEBUG_MSG_DATA_DECL_LOC(file, func, line, msgdata, mask, cdls)\
+ static struct libcfs_debug_msg_data msgdata = { \
+ .msg_subsys = DEBUG_SUBSYSTEM, \
+ .msg_file = (file), \
+ .msg_fn = (func), \
+ .msg_line = (line), \
+ .msg_cdls = (cdls) }; \
+ msgdata.msg_mask = (mask)
+
+#define LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, mask, cdls) \
+ LIBCFS_DEBUG_MSG_DATA_DECL_LOC(__FILE__, __func__, __LINE__, \
+ msgdata, mask, cdls)
#ifdef CDEBUG_ENABLED
+#if !defined(__x86_64__)
+# ifdef __ia64__
+# define CDEBUG_STACK() (THREAD_SIZE - \
+ ((unsigned long)__builtin_dwarf_cfa() & \
+ (THREAD_SIZE - 1)))
+# else
+# define CDEBUG_STACK() (THREAD_SIZE - \
+ ((unsigned long)__builtin_frame_address(0) & \
+ (THREAD_SIZE - 1)))
+# endif /* __ia64__ */
+
+#define __CHECK_STACK_WITH_LOC(file, func, line, msgdata, mask, cdls) \
+do { \
+ if (unlikely(CDEBUG_STACK() > libcfs_stack)) { \
+ LIBCFS_DEBUG_MSG_DATA_INIT(file, func, line, msgdata, \
+ D_WARNING, NULL); \
+ libcfs_stack = CDEBUG_STACK(); \
+ libcfs_debug_msg(msgdata, "maximum lustre stack %u\n", \
+ libcfs_stack); \
+ (msgdata)->msg_mask = mask; \
+ (msgdata)->msg_cdls = cdls; \
+ dump_stack(); \
+ /*panic("LBUG");*/ \
+ } \
+} while (0)
+#else /* __x86_64__ */
+#define CDEBUG_STACK() (0L)
+#define __CHECK_STACK_WITH_LOC(file, func, line, msgdata, mask, cdls) \
+ do {} while (0)
+#endif /* __x86_64__ */
+
+#define CFS_CHECK_STACK(msgdata, mask, cdls) \
+ __CHECK_STACK_WITH_LOC(__FILE__, __func__, __LINE__, \
+ msgdata, mask, cdls)
/**
* Filters out logging messages based on mask and subsystem.
*/
static inline int cfs_cdebug_show(unsigned int mask, unsigned int subsystem)
{
- return mask & D_CANTMASK ||
- ((libcfs_debug & mask) && (libcfs_subsystem_debug & subsystem));
+ return mask & D_CANTMASK ||
+ ((libcfs_debug & mask) && (libcfs_subsystem_debug & subsystem));
}
-# define __CDEBUG(cdls, mask, format, ...) \
-do { \
- static struct libcfs_debug_msg_data msgdata; \
- \
- CFS_CHECK_STACK(&msgdata, mask, cdls); \
- \
- if (cfs_cdebug_show(mask, DEBUG_SUBSYSTEM)) { \
- LIBCFS_DEBUG_MSG_DATA_INIT(&msgdata, mask, cdls); \
- libcfs_debug_msg(&msgdata, format, ## __VA_ARGS__); \
- } \
+# define __CDEBUG_WITH_LOC(file, func, line, mask, cdls, format, ...) \
+do { \
+ static struct libcfs_debug_msg_data msgdata; \
+ \
+ __CHECK_STACK_WITH_LOC(file, func, line, &msgdata, mask, cdls); \
+ \
+ if (cfs_cdebug_show(mask, DEBUG_SUBSYSTEM)) { \
+ LIBCFS_DEBUG_MSG_DATA_INIT(file, func, line, \
+ &msgdata, mask, cdls); \
+ libcfs_debug_msg(&msgdata, format, ## __VA_ARGS__); \
+ } \
} while (0)
-# define CDEBUG(mask, format, ...) __CDEBUG(NULL, mask, format, ## __VA_ARGS__)
+# define CDEBUG(mask, format, ...) \
+ __CDEBUG_WITH_LOC(__FILE__, __func__, __LINE__, \
+ mask, NULL, format, ## __VA_ARGS__)
# define CDEBUG_LIMIT(mask, format, ...) \
do { \
static struct cfs_debug_limit_state cdls; \
\
- __CDEBUG(&cdls, mask, format, ## __VA_ARGS__); \
+ __CDEBUG_WITH_LOC(__FILE__, __func__, __LINE__, \
+ mask, &cdls, format, ## __VA_ARGS__); \
} while (0)
# else /* !CDEBUG_ENABLED */
static inline int cfs_cdebug_show(unsigned int mask, unsigned int subsystem)
{
- return 0;
+ return 0;
}
# define CDEBUG(mask, format, ...) (void)(0)
# define CDEBUG_LIMIT(mask, format, ...) (void)(0)
"%x-%x: " format, errnum, LERRCHKSUM(errnum), ## __VA_ARGS__)
#define LCONSOLE_ERROR(format, ...) LCONSOLE_ERROR_MSG(0x00, format, ## __VA_ARGS__)
-#define LCONSOLE_EMERG(format, ...) CDEBUG(D_CONSOLE | D_EMERG, format, ## __VA_ARGS__)
+#define LCONSOLE_EMERG(format, ...) \
+ CDEBUG(D_CONSOLE | D_EMERG, format, ## __VA_ARGS__)
#if defined(CDEBUG_ENTRY_EXIT)
void libcfs_log_goto(struct libcfs_debug_msg_data *goto_data,
const char *label, long rc);
-# define GOTO(label, rc) \
-do { \
- if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
- LIBCFS_DEBUG_MSG_DATA_DECL(_goto_data, D_TRACE, NULL); \
- libcfs_log_goto(&_goto_data, #label, (long)(rc)); \
- } else { \
- (void)(rc); \
- } \
- \
- goto label; \
+# define GOTO(label, rc) \
+do { \
+ if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
+ LIBCFS_DEBUG_MSG_DATA_DECL(_goto_data, D_TRACE, NULL); \
+ libcfs_log_goto(&_goto_data, #label, (long)(rc)); \
+ } else { \
+ (void)(rc); \
+ } \
+ \
+ goto label; \
} while (0)
long libcfs_log_return(struct libcfs_debug_msg_data *, long rc);
# if BITS_PER_LONG > 32
-# define RETURN(rc) \
-do { \
- if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
- LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_TRACE, NULL); \
- return (typeof(rc))libcfs_log_return(&msgdata, \
- (long)(rc)); \
- } \
- \
- return (rc); \
+# define RETURN(rc) \
+do { \
+ if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_TRACE, NULL); \
+ return (typeof(rc))libcfs_log_return(&msgdata, \
+ (long)(rc)); \
+ } \
+ \
+ return rc; \
} while (0)
# else /* BITS_PER_LONG == 32 */
/* We need an on-stack variable, because we cannot case a 32-bit pointer
* casting directly to (long) will truncate 64-bit return values. The log
* values will print as 32-bit values, but they always have been. LU-1436
*/
-# define RETURN(rc) \
-do { \
- if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
- typeof(rc) __rc = (rc); \
- LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_TRACE, NULL); \
- libcfs_log_return(&msgdata, (long)__rc); \
- return __rc; \
- } \
- \
- return (rc); \
+# define RETURN(rc) \
+do { \
+ if (cfs_cdebug_show(D_TRACE, DEBUG_SUBSYSTEM)) { \
+ typeof(rc) __rc = (rc); \
+ LIBCFS_DEBUG_MSG_DATA_DECL(msgdata, D_TRACE, NULL); \
+ libcfs_log_return(&msgdata, (long)__rc); \
+ return __rc; \
+ } \
+ \
+ return rc; \
} while (0)
# endif /* BITS_PER_LONG > 32 */
return; \
} while (0)
-extern int libcfs_debug_msg(struct libcfs_debug_msg_data *msgdata,
- const char *format1, ...)
- __attribute__ ((format (printf, 2, 3)));
-
-extern int libcfs_debug_vmsg2(struct libcfs_debug_msg_data *msgdata,
- const char *format1,
- va_list args, const char *format2, ...)
- __attribute__ ((format (printf, 4, 5)));
+int libcfs_debug_msg(struct libcfs_debug_msg_data *msgdata,
+ const char *format1, ...)
+ __printf(2, 3);
/* other external symbols that tracefile provides: */
-extern int cfs_trace_copyin_string(char *knl_buffer, int knl_buffer_nob,
- const char __user *usr_buffer,
- int usr_buffer_nob);
-extern int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
- const char *knl_buffer, char *append);
+int cfs_trace_copyout_string(char __user *usr_buffer, int usr_buffer_nob,
+ const char *knl_buffer, char *append);
#define LIBCFS_DEBUG_FILE_PATH_DEFAULT "/tmp/lustre-log"
+void cfs_debug_init(void);
+
#endif /* __LIBCFS_DEBUG_H__ */
git://git.whamcloud.com / fs / lustre-release.git / blobdiff