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Merge branch 'linus' into perf/core, to pick up fixes

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Signed-off-by: Ingo Molnar <[email protected]>
This commit is contained in:
Ingo Molnar 2019-02-28 08:27:17 +01:00
commit 9ed8f1a6e7
756 changed files with 7346 additions and 3904 deletions
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16
kernel/events/core.c
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@ -4968,6 +4968,11 @@ static void __perf_event_period(struct perf_event *event,
}
}
static int perf_event_check_period(struct perf_event *event, u64 value)
{
return event->pmu->check_period(event, value);
}
static int perf_event_period(struct perf_event *event, u64 __user *arg)
{
u64 value;
@ -4984,6 +4989,9 @@ static int perf_event_period(struct perf_event *event, u64 __user *arg)
if (event->attr.freq && value > sysctl_perf_event_sample_rate)
return -EINVAL;
if (perf_event_check_period(event, value))
return -EINVAL;
event_function_call(event, __perf_event_period, &value);
return 0;
@ -9600,6 +9608,11 @@ static int perf_pmu_nop_int(struct pmu *pmu)
return 0;
}
static int perf_event_nop_int(struct perf_event *event, u64 value)
{
return 0;
}
static DEFINE_PER_CPU(unsigned int, nop_txn_flags);
static void perf_pmu_start_txn(struct pmu *pmu, unsigned int flags)
@ -9900,6 +9913,9 @@ got_cpu_context:
pmu->pmu_disable = perf_pmu_nop_void;
}
if (!pmu->check_period)
pmu->check_period = perf_event_nop_int;
if (!pmu->event_idx)
pmu->event_idx = perf_event_idx_default;

2
kernel/events/ring_buffer.c
View file

@ -733,7 +733,7 @@ struct ring_buffer *rb_alloc(int nr_pages, long watermark, int cpu, int flags)
size = sizeof(struct ring_buffer);
size += nr_pages * sizeof(void *);
if (order_base_2(size) >= MAX_ORDER)
if (order_base_2(size) >= PAGE_SHIFT+MAX_ORDER)
goto fail;
rb = kzalloc(size, GFP_KERNEL);