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author | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-10 15:22:03 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-10 15:22:03 -0700 |
commit | 12ad143e1b803e541e48b8ba40f550250259ecdd (patch) | |
tree | 5202b407df21e5abaeb294d1ecddcf0a2eca7f8b /kernel/events | |
parent | 262d6a9a63a387c8dfa9eb4f7713e159c941e52c (diff) | |
parent | b339da480315505aa28a723a983217ebcff95c86 (diff) | |
download | linux-12ad143e1b803e541e48b8ba40f550250259ecdd.tar.gz |
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Thomas Gleixner: "Perf updates and fixes: Kernel: - Handle events which have the bpf_event attribute set as side band events as they carry information about BPF programs. - Add missing switch-case fall-through comments Libraries: - Fix leaks and double frees in error code paths. - Prevent buffer overflows in libtraceevent Tools: - Improvements in handling Intel BT/PTS - Add BTF ELF markers to perf trace BPF programs to improve output - Support --time, --cpu, --pid and --tid filters for perf diff - Calculate the column width in perf annotate as the hardcoded 6 characters for the instruction are not sufficient - Small fixes all over the place" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (38 commits) perf/core: Mark expected switch fall-through perf/x86/intel/uncore: Fix client IMC events return huge result perf/ring_buffer: Use high order allocations for AUX buffers optimistically perf data: Force perf_data__open|close zero data->file.path perf session: Fix double free in perf_data__close perf evsel: Probe for precise_ip with simple attr perf tools: Read and store caps/max_precise in perf_pmu perf hist: Fix memory leak of srcline perf hist: Add error path into hist_entry__init perf c2c: Fix c2c report for empty numa node perf script python: Add Python3 support to intel-pt-events.py perf script python: Add Python3 support to event_analyzing_sample.py perf script python: add Python3 support to check-perf-trace.py perf script python: Add Python3 support to futex-contention.py perf script python: Remove mixed indentation perf diff: Support --pid/--tid filter options perf diff: Support --cpu filter option perf diff: Support --time filter option perf thread: Generalize function to copy from thread addr space from intel-bts code perf annotate: Calculate the max instruction name, align column to that ...
Diffstat (limited to 'kernel/events')
-rw-r--r-- | kernel/events/core.c | 4 | ||||
-rw-r--r-- | kernel/events/ring_buffer.c | 32 |
2 files changed, 18 insertions, 18 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index f7086c388781..1032a16bd186 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -4238,7 +4238,8 @@ static bool is_sb_event(struct perf_event *event) if (attr->mmap || attr->mmap_data || attr->mmap2 || attr->comm || attr->comm_exec || attr->task || attr->ksymbol || - attr->context_switch) + attr->context_switch || + attr->bpf_event) return true; return false; } @@ -9174,6 +9175,7 @@ perf_event_parse_addr_filter(struct perf_event *event, char *fstr, case IF_SRC_KERNELADDR: case IF_SRC_KERNEL: kernel = 1; + /* fall through */ case IF_SRC_FILEADDR: case IF_SRC_FILE: diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index 678ccec60d8f..a4047321d7d8 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -598,29 +598,27 @@ int rb_alloc_aux(struct ring_buffer *rb, struct perf_event *event, { bool overwrite = !(flags & RING_BUFFER_WRITABLE); int node = (event->cpu == -1) ? -1 : cpu_to_node(event->cpu); - int ret = -ENOMEM, max_order = 0; + int ret = -ENOMEM, max_order; if (!has_aux(event)) return -EOPNOTSUPP; - if (event->pmu->capabilities & PERF_PMU_CAP_AUX_NO_SG) { - /* - * We need to start with the max_order that fits in nr_pages, - * not the other way around, hence ilog2() and not get_order. - */ - max_order = ilog2(nr_pages); + /* + * We need to start with the max_order that fits in nr_pages, + * not the other way around, hence ilog2() and not get_order. + */ + max_order = ilog2(nr_pages); - /* - * PMU requests more than one contiguous chunks of memory - * for SW double buffering - */ - if ((event->pmu->capabilities & PERF_PMU_CAP_AUX_SW_DOUBLEBUF) && - !overwrite) { - if (!max_order) - return -EINVAL; + /* + * PMU requests more than one contiguous chunks of memory + * for SW double buffering + */ + if ((event->pmu->capabilities & PERF_PMU_CAP_AUX_SW_DOUBLEBUF) && + !overwrite) { + if (!max_order) + return -EINVAL; - max_order--; - } + max_order--; } rb->aux_pages = kcalloc_node(nr_pages, sizeof(void *), GFP_KERNEL, |