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SubjectRe: [PATCH] perf: Add support for creating offline events
Hi Raghavendra,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on v4.15]
[also build test ERROR on next-20180212]
[cannot apply to tip/perf/core]
[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/Raghavendra-Rao-Ananta/perf-Add-support-for-creating-offline-events/20180213-023250
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All errors (new ones prefixed by >>):

kernel//events/core.c: In function 'perf_event_init_cpu':
>> kernel//events/core.c:11152:2: error: implicit declaration of function 'perf_deferred_install_in_context'; did you mean 'perf_install_in_context'? [-Werror=implicit-function-declaration]
perf_deferred_install_in_context(cpu);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
perf_install_in_context
cc1: some warnings being treated as errors

vim +11152 kernel//events/core.c

11131
11132 int perf_event_init_cpu(unsigned int cpu)
11133 {
11134 struct perf_cpu_context *cpuctx;
11135 struct perf_event_context *ctx;
11136 struct pmu *pmu;
11137
11138 perf_swevent_init_cpu(cpu);
11139
11140 mutex_lock(&pmus_lock);
11141 cpumask_set_cpu(cpu, perf_online_mask);
11142 list_for_each_entry(pmu, &pmus, entry) {
11143 cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu);
11144 ctx = &cpuctx->ctx;
11145
11146 mutex_lock(&ctx->mutex);
11147 cpuctx->online = 1;
11148 mutex_unlock(&ctx->mutex);
11149 }
11150 mutex_unlock(&pmus_lock);
11151
11152 perf_deferred_install_in_context(cpu);
11153
11154 return 0;
11155 }
11156

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