Hi Janakarajan,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on tip/perf/core]
[also build test WARNING on v4.18 next-20180813]
[if your patch is applied to the wrong git tree, please drop us a note to help 
improve the system]

url:    
https://github.com/0day-ci/linux/commits/Janakarajan-Natarajan/perf-x86-amd-uncore-Set-ThreadMask-and-SliceMask-for-L3-Cache-perf-events/20180814-064324
config: i386-randconfig-x002-201832 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   In file included from include/linux/perf_event.h:25:0,
                    from arch/x86//events/amd/uncore.c:11:
   arch/x86//events/amd/uncore.c: In function 'amd_uncore_event_init':
>> arch/x86/include/asm/perf_event.h:51:11: warning: left shift count >= width 
>> of type [-Wshift-count-overflow]
     ((0xFUL) << AMD64_L3_SLICE_SHIFT)
              ^
>> arch/x86//events/amd/uncore.c:218:19: note: in expansion of macro 
>> 'AMD64_L3_SLICE_MASK'
      hwc->config |= (AMD64_L3_SLICE_MASK | AMD64_L3_THREAD_MASK);
                      ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/perf_event.h:55:12: warning: left shift count >= width 
of type [-Wshift-count-overflow]
     ((0xFFUL) << AMD64_L3_THREAD_SHIFT)
               ^
>> arch/x86//events/amd/uncore.c:218:41: note: in expansion of macro 
>> 'AMD64_L3_THREAD_MASK'
      hwc->config |= (AMD64_L3_SLICE_MASK | AMD64_L3_THREAD_MASK);
                                            ^~~~~~~~~~~~~~~~~~~~
--
   In file included from include/linux/perf_event.h:25:0,
                    from arch/x86/events/amd/uncore.c:11:
   arch/x86/events/amd/uncore.c: In function 'amd_uncore_event_init':
>> arch/x86/include/asm/perf_event.h:51:11: warning: left shift count >= width 
>> of type [-Wshift-count-overflow]
     ((0xFUL) << AMD64_L3_SLICE_SHIFT)
              ^
   arch/x86/events/amd/uncore.c:218:19: note: in expansion of macro 
'AMD64_L3_SLICE_MASK'
      hwc->config |= (AMD64_L3_SLICE_MASK | AMD64_L3_THREAD_MASK);
                      ^~~~~~~~~~~~~~~~~~~
   arch/x86/include/asm/perf_event.h:55:12: warning: left shift count >= width 
of type [-Wshift-count-overflow]
     ((0xFFUL) << AMD64_L3_THREAD_SHIFT)
               ^
   arch/x86/events/amd/uncore.c:218:41: note: in expansion of macro 
'AMD64_L3_THREAD_MASK'
      hwc->config |= (AMD64_L3_SLICE_MASK | AMD64_L3_THREAD_MASK);
                                            ^~~~~~~~~~~~~~~~~~~~

vim +51 arch/x86/include/asm/perf_event.h

    39  
    40  #define AMD64_EVENTSEL_INT_CORE_SEL_SHIFT               37
    41  #define AMD64_EVENTSEL_INT_CORE_SEL_MASK                \
    42          (0xFULL << AMD64_EVENTSEL_INT_CORE_SEL_SHIFT)
    43  
    44  #define AMD64_EVENTSEL_EVENT    \
    45          (ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32))
    46  #define INTEL_ARCH_EVENT_MASK   \
    47          (ARCH_PERFMON_EVENTSEL_UMASK | ARCH_PERFMON_EVENTSEL_EVENT)
    48  
    49  #define AMD64_L3_SLICE_SHIFT                            48
    50  #define AMD64_L3_SLICE_MASK                             \
  > 51          ((0xFUL) << AMD64_L3_SLICE_SHIFT)
    52  

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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