1. 05 1月, 2010 1 次提交
  2. 28 12月, 2009 1 次提交
  3. 22 12月, 2009 2 次提交
  4. 21 12月, 2009 7 次提交
  5. 20 12月, 2009 10 次提交
  6. 19 12月, 2009 15 次提交
  7. 18 12月, 2009 4 次提交
    • A
      perf session: Make events_stats u64 to avoid overflow on 32-bit arches · b5b60fda
      Arnaldo Carvalho de Melo 提交于
      Pekka Enberg reported weird percentages in perf report. It
      turns out we are overflowing a 32-bit variables in struct
      events_stats on 32-bit architectures.
      
      Before:
      
       [acme@ana linux-2.6-tip]$ perf report -i pekka.perf.data 2> /dev/null | head -10
         281.96%       Xorg                        b710a561  [.] 0x000000b710a561
         140.15%       Xorg  [kernel]                        [k] __initramfs_end
          51.56%   metacity  libgobject-2.0.so.0.2000.1      [.] 0x00000000026e46
          35.12%  evolution  libcairo.so.2.10800.6           [.] 0x000000000203bd
          33.84%   metacity  libpthread-2.9.so               [.] 0x00000000007a3d
      
      After:
      
       [acme@ana linux-2.6-tip]$ perf report -i pekka.perf.data 2> /dev/null | head -10
          30.04%       Xorg                       b710a561   [.] 0x000000b710a561
          14.93%       Xorg  [kernel]                        [k] __initramfs_end
           5.49%   metacity  libgobject-2.0.so.0.2000.1      [.] 0x00000000026e46
           3.74%  evolution  libcairo.so.2.10800.6           [.] 0x000000000203bd
           3.61%   metacity  libpthread-2.9.so               [.] 0x00000000007a3d
      Reported-by: NPekka Enberg <penberg@cs.helsinki.fi>
      Tested-by: NPekka Enberg <penberg@cs.helsinki.fi>
      Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Frederic Weisbecker <fweisbec@gmail.com>
      Cc: Mike Galbraith <efault@gmx.de>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Paul Mackerras <paulus@samba.org>
      LKML-Reference: <1261148583-20395-1-git-send-email-acme@infradead.org>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      b5b60fda
    • F
      hw-breakpoints: Fix hardware breakpoints -> perf events dependency · 99e8c5a3
      Frederic Weisbecker 提交于
      The kbuild's select command doesn't propagate through the config
      dependencies.
      
      Hence the current rules of hardware breakpoint's config can't
      ensure perf can never be disabled under us.
      
      We have:
      
      config X86
      	selects HAVE_HW_BREAKPOINTS
      
      config HAVE_HW_BREAKPOINTS
      	select PERF_EVENTS
      
      config PERF_EVENTS
      	[...]
      
      x86 will select the breakpoints but that won't propagate to perf
      events. The user can still disable the latter, but it is
      necessary for the breakpoints.
      
      What we need is:
      
       - x86 selects HAVE_HW_BREAKPOINTS and PERF_EVENTS
       - HAVE_HW_BREAKPOINTS depends on PERF_EVENTS
      
      so that we ensure PERF_EVENTS is enabled and frozen for x86.
      
      This fixes the following kind of build errors:
      
       In file included from arch/x86/kernel/hw_breakpoint.c:31:
       include/linux/hw_breakpoint.h: In function 'hw_breakpoint_addr':
       include/linux/hw_breakpoint.h:39: error: 'struct perf_event' has no member named 'attr'
      
      v2: Select also ANON_INODES from x86, required for perf
      Reported-by: NCyrill Gorcunov <gorcunov@gmail.com>
      Reported-by: NMichal Marek <mmarek@suse.cz>
      Reported-by: NAndrew Randrianasulu <randrik_a@yahoo.com>
      Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Randy Dunlap <randy.dunlap@oracle.com>
      Cc: K.Prasad <prasad@linux.vnet.ibm.com>
      LKML-Reference: <1261010034-7786-1-git-send-regression-fweisbec@gmail.com>
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      99e8c5a3
    • D
      alpha: Convert BUG() to use unreachable() · acadbfb9
      David Daney 提交于
      Use the new unreachable() macro instead of for(;;);
      Signed-off-by: NDavid Daney <ddaney@caviumnetworks.com>
      CC: Richard Henderson <rth@twiddle.net>
      CC: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      CC: linux-alpha@vger.kernel.org
      Signed-off-by: NMatt Turner <mattst88@gmail.com>
      acadbfb9
    • M
      alpha: Add minimal support for software performance events · a582e6f0
      Michael Cree 提交于
      In the kernel the patch enables configuration of the perf event
      option, adds the perf_event_open syscall, and includes a minimal
      architecture specific asm/perf_event.h header file.
      Signed-off-by: NMichael Cree <mcree@orcon.net.nz>
      Cc: Richard Henderson <rth@twiddle.net>
      Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
      Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
      Cc: Paul Mackerras <paulus@samba.org>
      Cc: Ingo Molnar <mingo@elte.hu>
      Signed-off-by: NMatt Turner <mattst88@gmail.com>
      a582e6f0
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