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| author |   Ingo Molnar <mingo@kernel.org> | 2018-07-25 11:47:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-07-25 11:47:02 +0200 |
| commit | 93081caaaed6a40a4f6d9b7ba3f581a4bb1d4404 (patch) | |
| tree | f574201ba58ddf9e6264f463e613066cfc8532ba /kernel/events | |
| parent | perf, tools: Use correct articles in comments (diff) | |
| parent | perf/core: Fix crash when using HW tracing kernel filters (diff) | |
| download | linux-dev-93081caaaed6a40a4f6d9b7ba3f581a4bb1d4404.tar.xz linux-dev-93081caaaed6a40a4f6d9b7ba3f581a4bb1d4404.zip | |
Merge branch 'perf/urgent' into perf/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 86b31e5a5a9a..f6ea33a9f904 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -6343,7 +6343,7 @@ static u64 perf_virt_to_phys(u64 virt) static struct perf_callchain_entry __empty_callchain = { .nr = 0, }; -static struct perf_callchain_entry * +struct perf_callchain_entry * perf_callchain(struct perf_event *event, struct pt_regs *regs) { bool kernel = !event->attr.exclude_callchain_kernel; @@ -6382,7 +6382,9 @@ void perf_prepare_sample(struct perf_event_header *header, if (sample_type & PERF_SAMPLE_CALLCHAIN) { int size = 1; - data->callchain = perf_callchain(event, regs); + if (!(sample_type & __PERF_SAMPLE_CALLCHAIN_EARLY)) + data->callchain = perf_callchain(event, regs); + size += data->callchain->nr; header->size += size * sizeof(u64); @@ -6482,7 +6484,7 @@ void perf_prepare_sample(struct perf_event_header *header, data->phys_addr = perf_virt_to_phys(data->addr); } -static void __always_inline +static __always_inline void __perf_event_output(struct perf_event *event, struct perf_sample_data *data, struct pt_regs *regs, @@ -7335,6 +7337,10 @@ static bool perf_addr_filter_match(struct perf_addr_filter *filter, struct file *file, unsigned long offset, unsigned long size) { + /* d_inode(NULL) won't be equal to any mapped user-space file */ + if (!filter->path.dentry) + return false; + if (d_inode(filter->path.dentry) != file_inode(file)) return false; |