diff options
author | Li Zefan <lizf@cn.fujitsu.com> | 2009-08-19 03:54:51 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-08-19 09:02:24 -0400 |
commit | 540b7b8d65575c80162f2a0f38e1d313c92a6042 (patch) | |
tree | 664bdd01ce8fce990e634a304f9b3ab51e50970c /include/linux | |
parent | e647d6b314266adb904d4b84973eda0afa856946 (diff) |
tracing/syscalls: Add filtering support
Add filtering support for syscall events:
# echo 'mode == 0666' > events/syscalls/sys_enter_open
# echo 'ret == 0' > events/syscalls/sys_exit_open
# echo 1 > events/syscalls/sys_enter_open
# echo 1 > events/syscalls/sys_exit_open
# cat trace
...
modprobe-3084 [001] 117.463140: sys_open(filename: 917d3e8, flags: 0, mode: 1b6)
modprobe-3084 [001] 117.463176: sys_open -> 0x0
less-3086 [001] 117.510455: sys_open(filename: 9c6bdb8, flags: 8000, mode: 1b6)
sendmail-2574 [001] 122.145840: sys_open(filename: b807a365, flags: 0, mode: 1b6)
...
Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Jason Baron <jbaron@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
LKML-Reference: <4A8BAFCB.1040006@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/ftrace_event.h | 5 | ||||
-rw-r--r-- | include/linux/syscalls.h | 16 |
2 files changed, 14 insertions, 7 deletions
diff --git a/include/linux/ftrace_event.h b/include/linux/ftrace_event.h index 427cbae47f84..df5b085c4150 100644 --- a/include/linux/ftrace_event.h +++ b/include/linux/ftrace_event.h | |||
@@ -140,8 +140,9 @@ extern int filter_current_check_discard(struct ftrace_event_call *call, | |||
140 | void *rec, | 140 | void *rec, |
141 | struct ring_buffer_event *event); | 141 | struct ring_buffer_event *event); |
142 | 142 | ||
143 | extern int trace_define_field(struct ftrace_event_call *call, char *type, | 143 | extern int trace_define_field(struct ftrace_event_call *call, |
144 | char *name, int offset, int size, int is_signed); | 144 | const char *type, const char *name, |
145 | int offset, int size, int is_signed); | ||
145 | extern int trace_define_common_fields(struct ftrace_event_call *call); | 146 | extern int trace_define_common_fields(struct ftrace_event_call *call); |
146 | 147 | ||
147 | #define is_signed_type(type) (((type)(-1)) < 0) | 148 | #define is_signed_type(type) (((type)(-1)) < 0) |
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 8d57f77794ee..f124c8995555 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h | |||
@@ -190,6 +190,7 @@ static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \ | |||
190 | .event = &event_syscall_enter, \ | 190 | .event = &event_syscall_enter, \ |
191 | .raw_init = init_enter_##sname, \ | 191 | .raw_init = init_enter_##sname, \ |
192 | .show_format = syscall_enter_format, \ | 192 | .show_format = syscall_enter_format, \ |
193 | .define_fields = syscall_enter_define_fields, \ | ||
193 | .regfunc = reg_event_syscall_enter, \ | 194 | .regfunc = reg_event_syscall_enter, \ |
194 | .unregfunc = unreg_event_syscall_enter, \ | 195 | .unregfunc = unreg_event_syscall_enter, \ |
195 | .data = "sys"#sname, \ | 196 | .data = "sys"#sname, \ |
@@ -226,6 +227,7 @@ static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \ | |||
226 | .event = &event_syscall_exit, \ | 227 | .event = &event_syscall_exit, \ |
227 | .raw_init = init_exit_##sname, \ | 228 | .raw_init = init_exit_##sname, \ |
228 | .show_format = syscall_exit_format, \ | 229 | .show_format = syscall_exit_format, \ |
230 | .define_fields = syscall_exit_define_fields, \ | ||
229 | .regfunc = reg_event_syscall_exit, \ | 231 | .regfunc = reg_event_syscall_exit, \ |
230 | .unregfunc = unreg_event_syscall_exit, \ | 232 | .unregfunc = unreg_event_syscall_exit, \ |
231 | .data = "sys"#sname, \ | 233 | .data = "sys"#sname, \ |
@@ -233,6 +235,8 @@ static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \ | |||
233 | } | 235 | } |
234 | 236 | ||
235 | #define SYSCALL_METADATA(sname, nb) \ | 237 | #define SYSCALL_METADATA(sname, nb) \ |
238 | SYSCALL_TRACE_ENTER_EVENT(sname); \ | ||
239 | SYSCALL_TRACE_EXIT_EVENT(sname); \ | ||
236 | static const struct syscall_metadata __used \ | 240 | static const struct syscall_metadata __used \ |
237 | __attribute__((__aligned__(4))) \ | 241 | __attribute__((__aligned__(4))) \ |
238 | __attribute__((section("__syscalls_metadata"))) \ | 242 | __attribute__((section("__syscalls_metadata"))) \ |
@@ -241,20 +245,22 @@ static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \ | |||
241 | .nb_args = nb, \ | 245 | .nb_args = nb, \ |
242 | .types = types_##sname, \ | 246 | .types = types_##sname, \ |
243 | .args = args_##sname, \ | 247 | .args = args_##sname, \ |
244 | }; \ | 248 | .enter_event = &event_enter_##sname, \ |
245 | SYSCALL_TRACE_ENTER_EVENT(sname); \ | 249 | .exit_event = &event_exit_##sname, \ |
246 | SYSCALL_TRACE_EXIT_EVENT(sname); | 250 | }; |
247 | 251 | ||
248 | #define SYSCALL_DEFINE0(sname) \ | 252 | #define SYSCALL_DEFINE0(sname) \ |
253 | SYSCALL_TRACE_ENTER_EVENT(_##sname); \ | ||
254 | SYSCALL_TRACE_EXIT_EVENT(_##sname); \ | ||
249 | static const struct syscall_metadata __used \ | 255 | static const struct syscall_metadata __used \ |
250 | __attribute__((__aligned__(4))) \ | 256 | __attribute__((__aligned__(4))) \ |
251 | __attribute__((section("__syscalls_metadata"))) \ | 257 | __attribute__((section("__syscalls_metadata"))) \ |
252 | __syscall_meta_##sname = { \ | 258 | __syscall_meta_##sname = { \ |
253 | .name = "sys_"#sname, \ | 259 | .name = "sys_"#sname, \ |
254 | .nb_args = 0, \ | 260 | .nb_args = 0, \ |
261 | .enter_event = &event_enter__##sname, \ | ||
262 | .exit_event = &event_exit__##sname, \ | ||
255 | }; \ | 263 | }; \ |
256 | SYSCALL_TRACE_ENTER_EVENT(_##sname); \ | ||
257 | SYSCALL_TRACE_EXIT_EVENT(_##sname); \ | ||
258 | asmlinkage long sys_##sname(void) | 264 | asmlinkage long sys_##sname(void) |
259 | #else | 265 | #else |
260 | #define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void) | 266 | #define SYSCALL_DEFINE0(name) asmlinkage long sys_##name(void) |