Messages in this thread | | | Date | Wed, 21 Apr 2021 10:38:34 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH RESEND 2/2] perf/x86/lbr: Move cpuc->lbr_xsave allocation out of sleeping region |
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On Wed, Apr 21, 2021 at 10:18:25AM +0800, Like Xu wrote: > -int x86_reserve_hardware(void) > +int x86_reserve_hardware(struct perf_event *event) > { > int err = 0; > > @@ -398,8 +398,10 @@ int x86_reserve_hardware(void) > if (atomic_read(&pmc_refcount) == 0) { > if (!reserve_pmc_hardware()) > err = -EBUSY; > - else > + else { > reserve_ds_buffers(); > + reserve_lbr_buffers(event); > + } > } > if (!err) > atomic_inc(&pmc_refcount); > @@ -650,7 +652,7 @@ static int __x86_pmu_event_init(struct perf_event *event) > if (!x86_pmu_initialized()) > return -ENODEV; > > - err = x86_reserve_hardware(); > + err = x86_reserve_hardware(event); > if (err) > return err; >
This is still complete garbage..
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