Message ID | 20240510000502.1257463-4-yabinc@google.com (mailing list archive) |
---|---|
State | Superseded |
Headers | show |
Series | perf:core: Save raw sample data | expand |
Context | Check | Description |
---|---|---|
netdev/tree_selection | success | Not a local patch |
bpf/vmtest-bpf-next-PR | fail | PR summary |
bpf/vmtest-bpf-next-VM_Test-2 | success | Logs for Unittests |
bpf/vmtest-bpf-next-VM_Test-0 | success | Logs for Lint |
bpf/vmtest-bpf-next-VM_Test-5 | success | Logs for aarch64-gcc / build-release |
bpf/vmtest-bpf-next-VM_Test-3 | success | Logs for Validate matrix.py |
bpf/vmtest-bpf-next-VM_Test-4 | fail | Logs for aarch64-gcc / build / build for aarch64 with gcc |
bpf/vmtest-bpf-next-VM_Test-6 | success | Logs for aarch64-gcc / test |
bpf/vmtest-bpf-next-VM_Test-1 | success | Logs for ShellCheck |
bpf/vmtest-bpf-next-VM_Test-7 | success | Logs for aarch64-gcc / veristat |
bpf/vmtest-bpf-next-VM_Test-8 | fail | Logs for s390x-gcc / build / build for s390x with gcc |
bpf/vmtest-bpf-next-VM_Test-11 | success | Logs for s390x-gcc / veristat |
bpf/vmtest-bpf-next-VM_Test-12 | success | Logs for set-matrix |
bpf/vmtest-bpf-next-VM_Test-9 | success | Logs for s390x-gcc / build-release |
bpf/vmtest-bpf-next-VM_Test-10 | success | Logs for s390x-gcc / test |
bpf/vmtest-bpf-next-VM_Test-13 | fail | Logs for x86_64-gcc / build / build for x86_64 with gcc |
bpf/vmtest-bpf-next-VM_Test-15 | success | Logs for x86_64-gcc / test |
bpf/vmtest-bpf-next-VM_Test-18 | fail | Logs for x86_64-llvm-17 / build-release / build for x86_64 with llvm-17 and -O2 optimization |
bpf/vmtest-bpf-next-VM_Test-14 | success | Logs for x86_64-gcc / build-release |
bpf/vmtest-bpf-next-VM_Test-16 | success | Logs for x86_64-gcc / veristat |
bpf/vmtest-bpf-next-VM_Test-20 | success | Logs for x86_64-llvm-17 / veristat |
bpf/vmtest-bpf-next-VM_Test-19 | success | Logs for x86_64-llvm-17 / test |
bpf/vmtest-bpf-next-VM_Test-24 | success | Logs for x86_64-llvm-18 / veristat |
bpf/vmtest-bpf-next-VM_Test-23 | success | Logs for x86_64-llvm-18 / test |
bpf/vmtest-bpf-next-VM_Test-21 | fail | Logs for x86_64-llvm-18 / build / build for x86_64 with llvm-18 |
bpf/vmtest-bpf-next-VM_Test-17 | fail | Logs for x86_64-llvm-17 / build / build for x86_64 with llvm-17 |
bpf/vmtest-bpf-next-VM_Test-22 | fail | Logs for x86_64-llvm-18 / build-release / build for x86_64 with llvm-18 and -O2 optimization |
diff --git a/arch/x86/events/amd/core.c b/arch/x86/events/amd/core.c index 985ef3b47919..fb9bf3aa1b42 100644 --- a/arch/x86/events/amd/core.c +++ b/arch/x86/events/amd/core.c @@ -967,8 +967,7 @@ static int amd_pmu_v2_handle_irq(struct pt_regs *regs) if (!x86_perf_event_set_period(event)) continue; - if (has_branch_stack(event)) - perf_sample_save_brstack(&data, event, &cpuc->lbr_stack, NULL); + perf_sample_save_brstack(&data, event, &cpuc->lbr_stack, NULL); if (perf_event_overflow(event, &data, regs)) x86_pmu_stop(event, 0); diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 5b0dd07b1ef1..ff5577315938 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1702,8 +1702,7 @@ int x86_pmu_handle_irq(struct pt_regs *regs) perf_sample_data_init(&data, 0, event->hw.last_period); - if (has_branch_stack(event)) - perf_sample_save_brstack(&data, event, &cpuc->lbr_stack, NULL); + perf_sample_save_brstack(&data, event, &cpuc->lbr_stack, NULL); if (perf_event_overflow(event, &data, regs)) x86_pmu_stop(event, 0); diff --git a/arch/x86/events/intel/ds.c b/arch/x86/events/intel/ds.c index c2b5585aa6d1..f25236ffa28f 100644 --- a/arch/x86/events/intel/ds.c +++ b/arch/x86/events/intel/ds.c @@ -1754,8 +1754,7 @@ static void setup_pebs_fixed_sample_data(struct perf_event *event, if (x86_pmu.intel_cap.pebs_format >= 3) setup_pebs_time(event, data, pebs->tsc); - if (has_branch_stack(event)) - perf_sample_save_brstack(data, event, &cpuc->lbr_stack, NULL); + perf_sample_save_brstack(data, event, &cpuc->lbr_stack, NULL); } static void adaptive_pebs_save_regs(struct pt_regs *regs, diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 8617815456b0..8cff96782446 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1276,6 +1276,9 @@ static inline void perf_sample_save_brstack(struct perf_sample_data *data, { int size = sizeof(u64); /* nr */ + if (!has_branch_stack(event)) + return; + if (branch_sample_hw_index(event)) size += sizeof(u64); size += brs->nr * sizeof(struct perf_branch_entry);
Check sample_type in perf_sample_save_brstack() to prevent saving branch stack data when it isn't required. Suggested-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Yabin Cui <yabinc@google.com> --- arch/x86/events/amd/core.c | 3 +-- arch/x86/events/core.c | 3 +-- arch/x86/events/intel/ds.c | 3 +-- include/linux/perf_event.h | 3 +++ 4 files changed, 6 insertions(+), 6 deletions(-)