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authorTom Zanussi <tzanussi@gmail.com>2010-04-01 23:59:17 -0500
committerIngo Molnar <mingo@elte.hu>2010-04-14 11:56:06 +0200
commit46656ac7fb3252f8a3db29b18638e0e8067849ba (patch)
tree327aeceb67f0dac1729e8a1eef2e567bdeba235b
parent529870e37473a9fc609078f03cc5b4148cf06a87 (diff)
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 <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: <1270184365-8281-4-git-send-email-tzanussi@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--tools/perf/builtin-report.c12
1 files changed, 11 insertions, 1 deletions
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;