perf diff: Add -q/--quiet option
The -q/--quiet option is to suppress any message. Sometimes users just
want to see the numbers and it can be used for that case.
Committer notes:
Before:
# perf diff | head -10
Failed to open /tmp/perf-6678.map, continuing without symbols
Failed to open /tmp/perf-6678.map, continuing without symbols
Failed to open /tmp/perf-2646.map, continuing without symbols
# Event 'cycles'
#
# Baseline Delta Abs Shared Object Symbol
# ........ ......... .......................... ............................................
#
5.36% -1.76% [kernel.vmlinux] [k] intel_idle
2.80% +1.48% firefox [.] 0x00000000000101fe
57.12% -1.25% libxul.so [.] 0x00000000009bea92
1.36% -1.11% [kernel.vmlinux] [k] __schedule
4.26% -1.00% perf-6678.map [.] 0x00007fac4b0e9320
After:
# perf diff -q | head -10
5.36% -1.76% [kernel.vmlinux] [k] intel_idle
2.80% +1.48% firefox [.] 0x00000000000101fe
57.12% -1.25% libxul.so [.] 0x00000000009bea92
1.36% -1.11% [kernel.vmlinux] [k] __schedule
4.26% -1.00% perf-6678.map [.] 0x00007fac4b0e9320
1.86% +0.95% [kernel.vmlinux] [k] update_blocked_averages
0.80% -0.70% [kernel.vmlinux] [k] native_sched_clock
0.74% -0.58% [kernel.vmlinux] [k] native_write_msr
0.76% -0.56% qemu-system-x86_64 [.] 0x00000000002395c0
+0.54% libpulsecommon-10.0.so [.] 0x000000000002d91b
#
Signed-off-by: Namhyung Kim <[email protected]>
Suggested-and-Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
2 files changed
