1. 20 Mar, 2013 1 commit
  2. 19 Mar, 2013 16 commits
  3. 18 Mar, 2013 20 commits
  4. 17 Mar, 2013 3 commits
    • Linus Torvalds's avatar
      Linux 3.9-rc3 · a937536b
      Linus Torvalds authored
      a937536b
    • David Rientjes's avatar
      perf,x86: fix link failure for non-Intel configs · 6c4d3bc9
      David Rientjes authored
      Commit 1d9d8639 ("perf,x86: fix kernel crash with PEBS/BTS after
      suspend/resume") introduces a link failure since
      perf_restore_debug_store() is only defined for CONFIG_CPU_SUP_INTEL:
      
      	arch/x86/power/built-in.o: In function `restore_processor_state':
      	(.text+0x45c): undefined reference to `perf_restore_debug_store'
      
      Fix it by defining the dummy function appropriately.
      Signed-off-by: default avatarDavid Rientjes <rientjes@google.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      6c4d3bc9
    • Linus Torvalds's avatar
      perf,x86: fix wrmsr_on_cpu() warning on suspend/resume · 2a6e06b2
      Linus Torvalds authored
      Commit 1d9d8639 ("perf,x86: fix kernel crash with PEBS/BTS after
      suspend/resume") fixed a crash when doing PEBS performance profiling
      after resuming, but in using init_debug_store_on_cpu() to restore the
      DS_AREA mtrr it also resulted in a new WARN_ON() triggering.
      
      init_debug_store_on_cpu() uses "wrmsr_on_cpu()", which in turn uses CPU
      cross-calls to do the MSR update.  Which is not really valid at the
      early resume stage, and the warning is quite reasonable.  Now, it all
      happens to _work_, for the simple reason that smp_call_function_single()
      ends up just doing the call directly on the CPU when the CPU number
      matches, but we really should just do the wrmsr() directly instead.
      
      This duplicates the wrmsr() logic, but hopefully we can just remove the
      wrmsr_on_cpu() version eventually.
      Reported-and-tested-by: default avatarParag Warudkar <parag.lkml@gmail.com>
      Cc: stable@vger.kernel.org
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      2a6e06b2