From 46656ac7fb3252f8a3db29b18638e0e8067849ba Mon Sep 17 00:00:00 2001 From: Tom Zanussi Date: Thu, 1 Apr 2010 23:59:17 -0500 Subject: perf report: Introduce special handling for pipe input Adds special treatment for stdin - if the user specifies '-i -' to perf report, the intent is that the event stream be written to 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 Acked-by: Thomas Gleixner Cc: fweisbec@gmail.com Cc: rostedt@goodmis.org Cc: k-keiichi@bx.jp.nec.com Cc: acme@ghostprotocols.net LKML-Reference: <1270184365-8281-4-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar --- tools/perf/builtin-report.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index daee082ab42..00b358ff135 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -269,6 +269,13 @@ static struct perf_event_ops event_ops = { .read = process_read_event, }; +extern volatile int session_done; + +static void sig_handler(int sig __attribute__((__unused__))) +{ + session_done = 1; +} + static int __cmd_report(void) { int ret = -EINVAL; @@ -276,6 +283,8 @@ static int __cmd_report(void) struct rb_node *next; const char *help = "For a higher level overview, try: perf report --sort comm,dso"; + signal(SIGINT, sig_handler); + session = perf_session__new(input_name, O_RDONLY, force); if (session == NULL) return -ENOMEM; @@ -465,7 +474,8 @@ int cmd_report(int argc, const char **argv, const char *prefix __used) { argc = parse_options(argc, argv, options, report_usage, 0); - setup_browser(); + if (strcmp(input_name, "-") != 0) + setup_browser(); if (symbol__init() < 0) return -1; -- cgit v1.2.3-70-g09d2