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authorLi Zefan <lizf@cn.fujitsu.com>2009-08-19 03:54:51 -0400
committerIngo Molnar <mingo@elte.hu>2009-08-19 09:02:24 -0400
commit540b7b8d65575c80162f2a0f38e1d313c92a6042 (patch)
tree664bdd01ce8fce990e634a304f9b3ab51e50970c /include/linux
parente647d6b314266adb904d4b84973eda0afa856946 (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.h5
-rw-r--r--include/linux/syscalls.h16
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
143extern int trace_define_field(struct ftrace_event_call *call, char *type, 143extern 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);
145extern int trace_define_common_fields(struct ftrace_event_call *call); 146extern 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)