From efad14150a0b4429f37da7245001a8096ef7ee38 Mon Sep 17 00:00:00 2001 From: Robert Richter <robert.richter@amd.com> Date: Wed, 7 Dec 2011 10:02:54 +0100 Subject: perf report: Accept fifos as input file The default input file for perf report is not handled the same way as perf record does it for its output file. This leads to unexpected behavior of perf report, etc. E.g.: # perf record -a -e cpu-cycles sleep 2 | perf report | cat failed to open perf.data: No such file or directory (try 'perf record' first) While perf record writes to a fifo, perf report expects perf.data to be read. This patch changes this to accept fifos as input file. Applies to the following commands: perf annotate perf buildid-list perf evlist perf kmem perf lock perf report perf sched perf script perf timechart Also fixes char const* -> const char* type declaration for filename strings. v2: * Prevent potential null pointer access to input_name in builtin-report.c. Needed due to removal of patch "perf report: Setup browser if stdout is a pipe" Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com Signed-off-by: Robert Richter <robert.richter@amd.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> --- tools/perf/Documentation/perf-lock.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/Documentation/perf-lock.txt') diff --git a/tools/perf/Documentation/perf-lock.txt b/tools/perf/Documentation/perf-lock.txt index 4a26a2f3a6a3..d6b2a4f2108b 100644 --- a/tools/perf/Documentation/perf-lock.txt +++ b/tools/perf/Documentation/perf-lock.txt @@ -29,7 +29,7 @@ COMMON OPTIONS -i:: --input=<file>:: - Input file name. + Input file name. (default: perf.data unless stdin is a fifo) -v:: --verbose:: -- cgit v1.2.2