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Commit 46656ac7 authored by Tom Zanussi's avatar Tom Zanussi Committed by Ingo Molnar
Browse files

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: default avatarTom Zanussi <tzanussi@gmail.com>
Acked-by: default avatarThomas 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: default avatarIngo Molnar <mingo@elte.hu>
parent 529870e3

tools/perf/builtin-report.c

+11 −1
Original line number Diff line number Diff line
@@ -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;
@@ -465,6 +474,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __used) 
{

	argc = parse_options(argc, argv, options, report_usage, 0);



	if (strcmp(input_name, "-") != 0)

		setup_browser();



	if (symbol__init() < 0)