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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-11 19:03:54 +0200 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2009-08-11 20:35:30 +0200 |
| commit | dc4ddb4c0b7348f1c9759ae8a9e7d734dc1cda82 (patch) | |
| tree | 00c0df5d9b7809a0c0cf89713c55c7e04ce6c248 /include | |
| parent | e8f9f4d79a677f55c8ec3acbe87b33a87e2df0de (diff) | |
tracing: Add fields format definition for syscall events
Define the format of the syscall trace fields to parse the binary
values from a raw trace using the syscall events "format" file.
This is defined dynamically using the syscalls metadata.
It prepares the export of syscall event raw records to perf
counters.
Example:
$ cat /debug/tracing/events/syscalls/sys_enter_sched_getparam/format
name: sys_enter_sched_getparam
ID: 39
format:
field:unsigned short common_type; offset:0; size:2;
field:unsigned char common_flags; offset:2; size:1;
field:unsigned char common_preempt_count; offset:3; size:1;
field:int common_pid; offset:4; size:4;
field:int common_tgid; offset:8; size:4;
field:pid_t pid; offset:12; size:8;
field:struct sched_param * param; offset:20; size:8;
print fmt: "pid: 0x%08lx, param: 0x%08lx", ((unsigned long)(REC->pid)), ((unsigned long)(REC->param))
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Jiaying Zhang <jiayingz@google.com>
Cc: Martin Bligh <mbligh@google.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Jason Baron <jbaron@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/syscalls.h | 1 | ||||
| -rw-r--r-- | include/trace/syscall.h | 2 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 5541e75e140..87d06c173dd 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -189,6 +189,7 @@ static void prof_sysexit_disable_##sname(struct ftrace_event_call *event_call) \ .system = "syscalls", \ .event = &event_syscall_enter, \ .raw_init = init_enter_##sname, \ + .show_format = ftrace_format_syscall, \ .regfunc = reg_event_syscall_enter, \ .unregfunc = unreg_event_syscall_enter, \ .data = "sys"#sname, \ diff --git a/include/trace/syscall.h b/include/trace/syscall.h index 3ab6dd18fa3..0cb03625edd 100644 --- a/include/trace/syscall.h +++ b/include/trace/syscall.h @@ -55,6 +55,8 @@ extern int reg_event_syscall_enter(void *ptr); extern void unreg_event_syscall_enter(void *ptr); extern int reg_event_syscall_exit(void *ptr); extern void unreg_event_syscall_exit(void *ptr); +extern int +ftrace_format_syscall(struct ftrace_event_call *call, struct trace_seq *s); enum print_line_t print_syscall_enter(struct trace_iterator *iter, int flags); enum print_line_t print_syscall_exit(struct trace_iterator *iter, int flags); #endif |