Messages in this thread | | | Date | Thu, 9 Sep 2021 18:44:22 +0800 | From | kernel test robot <> | Subject | Re: [PATCH v1 03/13] perf/x86/amd: add AMD Fam19h Branch Sampling support |
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Hi Stephane,
Thank you for the patch! Perhaps something to improve:
[auto build test WARNING on tip/perf/core] [also build test WARNING on next-20210909] [cannot apply to tip/sched/core tip/x86/core v5.14] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Stephane-Eranian/perf-x86-amd-Add-AMD-Fam19h-Branch-Sampling-support/20210909-160050 base: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git 4034fb207e302cc0b1f304084d379640c1fb1436 config: x86_64-allyesconfig (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/7ff5f8448eecfc188c2240b2a5a5ea0b00f55662 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Stephane-Eranian/perf-x86-amd-Add-AMD-Fam19h-Branch-Sampling-support/20210909-160050 git checkout 7ff5f8448eecfc188c2240b2a5a5ea0b00f55662 # save the attached .config to linux build tree make W=1 ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
arch/x86/events/amd/core.c: In function 'amd_pmu_enable_all': >> arch/x86/events/amd/core.c:676:24: warning: variable 'hwc' set but not used [-Wunused-but-set-variable] 676 | struct hw_perf_event *hwc; | ^~~
vim +/hwc +676 arch/x86/events/amd/core.c
672 673 static void amd_pmu_enable_all(int added) 674 { 675 struct cpu_hw_events *cpuc = this_cpu_ptr(&cpu_hw_events); > 676 struct hw_perf_event *hwc; 677 int idx; 678 679 for (idx = 0; idx < x86_pmu.num_counters; idx++) { 680 hwc = &cpuc->events[idx]->hw; 681 682 /* only activate events which are marked as active */ 683 if (!test_bit(idx, cpuc->active_mask)) 684 continue; 685 686 amd_pmu_enable_event(cpuc->events[idx]); 687 } 688 } 689
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