diff options
author | Masami Hiramatsu <mhiramat@redhat.com> | 2009-11-24 16:56:45 -0500 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2009-11-26 10:55:37 +0100 |
commit | d1eb650ff4130972fa21462fa49cd35a2865403b (patch) | |
tree | e43cee89ccad8adfa06f2e5f746ad96d2e00d9b3 /include/trace/events/signal.h | |
parent | 80bbf6b641c8843b9d751a1f299aa7ee073ab9d4 (diff) | |
download | linux-d1eb650ff4130972fa21462fa49cd35a2865403b.tar.gz linux-d1eb650ff4130972fa21462fa49cd35a2865403b.tar.bz2 linux-d1eb650ff4130972fa21462fa49cd35a2865403b.zip |
tracepoint: Move signal sending tracepoint to events/signal.h
Move signal sending event to events/signal.h. This patch also
renames sched_signal_send event to signal_generate.
Changes in v4:
- Fix a typo of task_struct pointer.
Changes in v3:
- Add docbook style comments
Changes in v2:
- Add siginfo argument
- Add siginfo storing macro
Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Reviewed-by: Jason Baron <jbaron@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Cc: systemtap <systemtap@sources.redhat.com>
Cc: DLE <dle-develop@lists.sourceforge.net>
Cc: Oleg Nesterov <oleg@redhat.com>
LKML-Reference: <20091124215645.30449.60208.stgit@dhcp-100-2-132.bos.redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/trace/events/signal.h')
-rw-r--r-- | include/trace/events/signal.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/include/trace/events/signal.h b/include/trace/events/signal.h new file mode 100644 index 000000000000..ef51756a801d --- /dev/null +++ b/include/trace/events/signal.h @@ -0,0 +1,66 @@ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM signal + +#if !defined(_TRACE_SIGNAL_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SIGNAL_H + +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/tracepoint.h> + +#define TP_STORE_SIGINFO(__entry, info) \ + do { \ + if (info == SEND_SIG_NOINFO) { \ + __entry->errno = 0; \ + __entry->code = SI_USER; \ + } else if (info == SEND_SIG_PRIV) { \ + __entry->errno = 0; \ + __entry->code = SI_KERNEL; \ + } else { \ + __entry->errno = info->si_errno; \ + __entry->code = info->si_code; \ + } \ + } while (0) + +/** + * signal_generate - called when a signal is generated + * @sig: signal number + * @info: pointer to struct siginfo + * @task: pointer to struct task_struct + * + * Current process sends a 'sig' signal to 'task' process with + * 'info' siginfo. If 'info' is SEND_SIG_NOINFO or SEND_SIG_PRIV, + * 'info' is not a pointer and you can't access its field. Instead, + * SEND_SIG_NOINFO means that si_code is SI_USER, and SEND_SIG_PRIV + * means that si_code is SI_KERNEL. + */ +TRACE_EVENT(signal_generate, + + TP_PROTO(int sig, struct siginfo *info, struct task_struct *task), + + TP_ARGS(sig, info, task), + + TP_STRUCT__entry( + __field( int, sig ) + __field( int, errno ) + __field( int, code ) + __array( char, comm, TASK_COMM_LEN ) + __field( pid_t, pid ) + ), + + TP_fast_assign( + __entry->sig = sig; + TP_STORE_SIGINFO(__entry, info); + memcpy(__entry->comm, task->comm, TASK_COMM_LEN); + __entry->pid = task->pid; + ), + + TP_printk("sig=%d errno=%d code=%d comm=%s pid=%d", + __entry->sig, __entry->errno, __entry->code, + __entry->comm, __entry->pid) +); + +#endif /* _TRACE_SIGNAL_H */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |