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Namhyung Kim 63b42fce86 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 <namhyung@kernel.org>
Suggested-and-Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170217081742.17417-5-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-02-20 11:47:08 -03:00
..
arch
perf tools arm64: Add support for generating bpf prologue
2017-02-08 08:55:01 -03:00
bench
perf bench numa: Make sure dprintf() is not defined
2017-02-14 15:19:18 -03:00
Documentation
perf diff: Add -q/--quiet option
2017-02-20 11:47:08 -03:00
jvmti
perf kvmti: Remove unused Makefile file
2016-11-14 12:42:56 -03:00
pmu-events
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
python
perf python: Add tracepoint example
2016-07-12 16:23:35 -03:00
scripts
perf/core improvements and fixes:
2016-08-04 11:02:38 +02:00
tests
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
trace
perf trace: Check if MAP_32BIT is defined (again)
2016-12-20 09:37:40 -03:00
ui
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
util
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
.gitignore
perf tools: Add arch/*/include/generated/ to .gitignore
2016-05-30 12:41:46 -03:00
Build
perf ftrace: Introduce new 'ftrace' tool
2017-01-26 11:43:01 -03:00
builtin-annotate.c
perf annotate: Add branch stack / basic block
2016-09-08 13:44:03 -03:00
builtin-bench.c
perf subcmd: Create subcmd library
2015-12-17 14:27:14 -03:00
builtin-buildid-cache.c
tools: Introduce str_error_r()
2016-07-12 15:19:47 -03:00
builtin-buildid-list.c
perf subcmd: Create subcmd library
2015-12-17 14:27:14 -03:00
builtin-c2c.c
perf c2c report: Coalesce by default only by pid,iaddr
2017-01-20 16:52:56 -03:00
builtin-config.c
perf config: Mark where are config items from (user or system)
2016-11-14 13:10:37 -03:00
builtin-data.c
perf data ctf: Add '--all' option for 'perf data convert'
2016-06-28 10:54:57 -03:00
builtin-diff.c
perf diff: Add -q/--quiet option
2017-02-20 11:47:08 -03:00
builtin-evlist.c
perf evlist: Rename for_each() macros to for_each_entry()
2016-06-23 11:26:15 -03:00
builtin-ftrace.c
perf ftrace: Add ftrace.tracer config option
2017-01-31 16:20:09 -03:00
builtin-help.c
perf tools: Propagate perf_config() errors
2017-01-27 12:23:33 -03:00
builtin-inject.c
perf symbols: Remove symbol_filter_t machinery
2016-09-05 11:14:50 -03:00
builtin-kallsyms.c
perf kallsyms: Introduce tool to look for extended symbol information on the running kernel
2017-01-11 16:48:01 -03:00
builtin-kmem.c
perf symbols: No need to check if sym->name is NULL
2017-02-13 17:22:34 -03:00
builtin-kvm.c
perf kvm: Use NSEC_PER_USEC
2016-08-23 15:37:33 -03:00
builtin-list.c
perf list: Add debug support for outputing alias string
2017-02-08 08:55:04 -03:00
builtin-lock.c
perf subcmd: Create subcmd library
2015-12-17 14:27:14 -03:00
builtin-mem.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-probe.c
perf probe: Add option --symfs
2017-02-08 09:41:10 -03:00
builtin-record.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-report.c
perf report: Add -q/--quiet option
2017-02-20 11:46:58 -03:00
builtin-sched.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-script.c
perf script: Also allow forcing reading of non-root owned files by root
2017-01-16 14:59:15 -03:00
builtin-stat.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-timechart.c
perf timechart: Use NSEC_PER_U?SEC
2016-08-23 15:37:33 -03:00
builtin-top.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-trace.c
perf utils: Check verbose flag properly
2017-02-20 11:35:54 -03:00
builtin-version.c
perf tools: Move cmd_version() to builtin-version.c
2015-12-09 13:42:03 -03:00
builtin.h
perf ftrace: Introduce new 'ftrace' tool
2017-01-26 11:43:01 -03:00
check-headers.sh
perf tools: Move headers check into bash script
2016-12-15 16:25:44 -03:00
command-list.txt
perf ftrace: Introduce new 'ftrace' tool
2017-01-26 11:43:01 -03:00
CREDITS
…
design.txt
…
Makefile
perf build tests: Do parallell builds with 'build-test'
2016-02-04 15:57:00 -03:00
Makefile.config
tools perf scripting python: clang doesn't have -spec, remove it
2017-02-17 10:31:13 -03:00
Makefile.perf
perf build: Add special fixdep cleaning rule
2017-02-17 16:04:38 -03:00
MANIFEST
tools include: Introduce linux/compiler-gcc.h
2017-02-13 14:29:29 -03:00
perf-archive.sh
…
perf-completion.sh
perf tools: Avoid confusion with preloaded bash function for perf bash completion
2015-03-19 13:53:27 -03:00
perf-read-vdso.c
…
perf-sys.h
perf powerpc: Fix build-test failure
2016-09-08 13:44:07 -03:00
perf-with-kcore.sh
perf tools: Fix perf-with-kcore handling of arguments containing spaces
2015-08-06 16:48:27 -03:00
perf.c
perf tools: Propagate perf_config() errors
2017-01-27 12:23:33 -03:00
perf.h
perf evsel: Allow to ignore missing pid
2016-12-15 16:25:46 -03:00