Messages in this thread Patch in this message | | | From | Zhouyi Zhou <> | Subject | [PATCH 1/1] perf/amd: NULL return of kzalloc_node should be handled | Date | Wed, 11 Jun 2014 12:08:21 +0800 |
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Signed-off-by: Zhouyi Zhou <yizhouzhou@ict.ac.cn> --- arch/x86/kernel/cpu/perf_event_amd_uncore.c | 32 +++++++++++++++------------ 1 file changed, 18 insertions(+), 14 deletions(-)
diff --git a/arch/x86/kernel/cpu/perf_event_amd_uncore.c b/arch/x86/kernel/cpu/perf_event_amd_uncore.c index 3bbdf4c..f60a50e 100644 --- a/arch/x86/kernel/cpu/perf_event_amd_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_amd_uncore.c @@ -300,24 +300,28 @@ static void amd_uncore_cpu_up_prepare(unsigned int cpu) if (amd_uncore_nb) { uncore = amd_uncore_alloc(cpu); - uncore->cpu = cpu; - uncore->num_counters = NUM_COUNTERS_NB; - uncore->rdpmc_base = RDPMC_BASE_NB; - uncore->msr_base = MSR_F15H_NB_PERF_CTL; - uncore->active_mask = &amd_nb_active_mask; - uncore->pmu = &amd_nb_pmu; - *per_cpu_ptr(amd_uncore_nb, cpu) = uncore; + if (uncore) { + uncore->cpu = cpu; + uncore->num_counters = NUM_COUNTERS_NB; + uncore->rdpmc_base = RDPMC_BASE_NB; + uncore->msr_base = MSR_F15H_NB_PERF_CTL; + uncore->active_mask = &amd_nb_active_mask; + uncore->pmu = &amd_nb_pmu; + *per_cpu_ptr(amd_uncore_nb, cpu) = uncore; + } } if (amd_uncore_l2) { uncore = amd_uncore_alloc(cpu); - uncore->cpu = cpu; - uncore->num_counters = NUM_COUNTERS_L2; - uncore->rdpmc_base = RDPMC_BASE_L2; - uncore->msr_base = MSR_F16H_L2I_PERF_CTL; - uncore->active_mask = &amd_l2_active_mask; - uncore->pmu = &amd_l2_pmu; - *per_cpu_ptr(amd_uncore_l2, cpu) = uncore; + if (uncore) { + uncore->cpu = cpu; + uncore->num_counters = NUM_COUNTERS_L2; + uncore->rdpmc_base = RDPMC_BASE_L2; + uncore->msr_base = MSR_F16H_L2I_PERF_CTL; + uncore->active_mask = &amd_l2_active_mask; + uncore->pmu = &amd_l2_pmu; + *per_cpu_ptr(amd_uncore_l2, cpu) = uncore; + } } } -- 1.7.10.4
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