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| author | Tom Zanussi <tzanussi@gmail.com> | 2010-04-01 23:59:18 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-04-14 11:56:06 +0200 |
| commit | c239da3b4b55dbb8f30bcb8d1a0d63fc44a567c3 (patch) | |
| tree | c7bbe718db4ff6bb82b2eac9870f5cbabdf8b988 /tools/perf/builtin-trace.c | |
| parent | 46656ac7fb3252f8a3db29b18638e0e8067849ba (diff) | |
| download | kernel_goldelico_gta04-c239da3b4b55dbb8f30bcb8d1a0d63fc44a567c3.zip kernel_goldelico_gta04-c239da3b4b55dbb8f30bcb8d1a0d63fc44a567c3.tar.gz kernel_goldelico_gta04-c239da3b4b55dbb8f30bcb8d1a0d63fc44a567c3.tar.bz2 | |
perf trace: Introduce special handling for pipe input
Adds special treatment for stdin - if the user specifies '-i -'
to perf trace, the intent is that the event stream be read from
stdin rather than from a disk file.
The actual handling of the '-' filename is done by the session;
this just adds a signal handler to stop reporting, and turns off
interference by the pager.
Signed-off-by: Tom Zanussi <tzanussi@gmail.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: fweisbec@gmail.com
Cc: rostedt@goodmis.org
Cc: k-keiichi@bx.jp.nec.com
Cc: acme@ghostprotocols.net
LKML-Reference: <1270184365-8281-5-git-send-email-tzanussi@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'tools/perf/builtin-trace.c')
| -rw-r--r-- | tools/perf/builtin-trace.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c index 8fc50d8..c681e85 100644 --- a/tools/perf/builtin-trace.c +++ b/tools/perf/builtin-trace.c @@ -106,8 +106,17 @@ static struct perf_event_ops event_ops = { .comm = event__process_comm, }; +extern volatile int session_done; + +static void sig_handler(int sig __unused) +{ + session_done = 1; +} + static int __cmd_trace(struct perf_session *session) { + signal(SIGINT, sig_handler); + return perf_session__process_events(session, &event_ops); } @@ -580,7 +589,8 @@ int cmd_trace(int argc, const char **argv, const char *prefix __used) if (session == NULL) return -ENOMEM; - if (!perf_session__has_traces(session, "record -R")) + if (strcmp(input_name, "-") && + !perf_session__has_traces(session, "record -R")) return -EINVAL; if (generate_script_lang) { |