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authorRobert Richter <robert.richter@amd.com>2011-12-07 10:02:54 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2011-12-23 17:01:03 -0200
commitefad14150a0b4429f37da7245001a8096ef7ee38 (patch)
tree61c41a83384266dca00a2a4c88f43ebf4bdf5b5e /tools/perf/Documentation/perf-lock.txt
parent1b5495043d5bc058def21f9b66fd8feaa794eb44 (diff)
downloadlinux-efad14150a0b4429f37da7245001a8096ef7ee38.tar.gz
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>
Diffstat (limited to 'tools/perf/Documentation/perf-lock.txt')
-rw-r--r--tools/perf/Documentation/perf-lock.txt2
1 files changed, 1 insertions, 1 deletions
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::