diff options
| author | Ingo Molnar <[email protected]> | 2013-11-14 08:33:24 +0100 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2013-11-14 13:36:00 +0100 |
| commit | bb4c5500c9c5b809696eee212843e731721a6e15 (patch) | |
| tree | 4e5bac485a974ffd521bddd34e102b93bd0636fd | |
| parent | 555a098af6086256bc64d3806519f37ccae936e0 (diff) | |
tools/perf/build: Fix timerfd feature check
'feature_timerfd' is checked all the time and calculated explicitly,
in a serial fashion. Add it to CORE_FEATURE_TESTS which causes it to
be built in parallel, using the newfangled parallel build autodetection
code.
This shaves 137 msecs off the perf build time on my system, which
speeds up the common case cached build by 43%:
Before:
comet:~/tip> perf stat --null --repeat 5 make -C tools/perf/
[...]
0,453771441 seconds time elapsed ( +- 0,09% )
After:
comet:~/tip> perf stat --null --repeat 5 make -C tools/perf/
[...]
0,316290185 seconds time elapsed ( +- 0,24% )
Cc: David Ahern <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Linus Torvalds <[email protected]>
Link: http://lkml.kernel.org/n/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
| -rw-r--r-- | tools/perf/config/Makefile | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/tools/perf/config/Makefile b/tools/perf/config/Makefile index f5905f2b197d..861379ec7632 100644 --- a/tools/perf/config/Makefile +++ b/tools/perf/config/Makefile @@ -142,7 +142,8 @@ CORE_FEATURE_TESTS = \ libunwind \ on-exit \ stackprotector \ - stackprotector-all + stackprotector-all \ + timerfd # # So here we detect whether test-all was rebuilt, to be able @@ -405,7 +406,6 @@ else endif endif -$(call feature_check,timerfd) ifeq ($(feature-timerfd), 1) CFLAGS += -DHAVE_TIMERFD_SUPPORT else |