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  1. 05 12月, 2013 1 次提交
  3. 03 12月, 2013 1 次提交
  5. 02 12月, 2013 1 次提交
  7. 15 11月, 2013 1 次提交
    • I
      tools/perf/build: Fix feature-libunwind-debug-frame handling · e310718d
      由 Ingo Molnar 提交于 
      Set feature-libunwind-debug-frame. We don't want it in
CORE_FEATURE_TESTS because it's not the generic case, but we
need to set it in the !feature-libunwind case.

Also, because x86 distributions typically don't have
dwarf_find_debug_frame() unwinding method:

  test-libunwind-debug-frame.c:(.text+0x31): undefined reference to `_Ux86_64_dwarf_find_debug_frame'

Restrict this new API to ARM for the time being.

With this patch test-all.c works again, so repeat perf builds
are  fast again:

  comet:~/tip> perf stat --null --repeat 5 make -C tools/perf/
  [...]

       0,452899660 seconds time elapsed                                          ( +-  0,11% )

While with before it was:

  comet:~/tip> perf stat --null --repeat 5 make -C tools/perf/
  [...]

       1,674001829 seconds time elapsed                                          ( +-  0,16% )

[ Includes fix to config/feature-checks/Makefile from Will Deacon. ]
Tested-by: NWill Deacon <will.deacon@arm.com>
Tested-by: NJean Pihet <jean.pihet@linaro.org>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/n/tip-scsoctqzmou3rpkixCHezy9e@git.kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      e310718d
  9. 14 11月, 2013 1 次提交
    • I
      tools/perf/build: Fix timerfd feature check · bb4c5500
      由 Ingo Molnar 提交于 
      '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 <dsahern@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/n/tip-bb92CmexihopoSyqnkqepvsy@git.kernel.orgSigned-off-by: NIngo Molnar <mingo@kernel.org>
      bb4c5500
  11. 05 11月, 2013 2 次提交
  13. 04 11月, 2013 2 次提交
  15. 23 10月, 2013 1 次提交
  17. 21 10月, 2013 1 次提交
  19. 14 10月, 2013 7 次提交
  21. 11 10月, 2013 3 次提交
  23. 10 10月, 2013 2 次提交
  25. 09 10月, 2013 17 次提交