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author | Paolo Bonzini | 2019-08-09 16:53:39 +0200 |
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committer | Paolo Bonzini | 2019-08-09 16:53:39 +0200 |
commit | 0e1c438c44dd9cde56effb44c5f1cfeda72e108d (patch) | |
tree | fa3492d4d7d8b7444e5d8ebe6c78210826333e4b /tools/testing/selftests/bpf/prog_tests/send_signal.c | |
parent | selftests: kvm: Adding config fragments (diff) | |
parent | arm64: KVM: hyp: debug-sr: Mark expected switch fall-through (diff) | |
download | kernel-qcow2-linux-0e1c438c44dd9cde56effb44c5f1cfeda72e108d.tar.gz kernel-qcow2-linux-0e1c438c44dd9cde56effb44c5f1cfeda72e108d.tar.xz kernel-qcow2-linux-0e1c438c44dd9cde56effb44c5f1cfeda72e108d.zip |
Merge tag 'kvmarm-fixes-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm fixes for 5.3
- A bunch of switch/case fall-through annotation, fixing one actual bug
- Fix PMU reset bug
- Add missing exception class debug strings
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/send_signal.c')
-rw-r--r-- | tools/testing/selftests/bpf/prog_tests/send_signal.c | 33 |
1 files changed, 32 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/send_signal.c b/tools/testing/selftests/bpf/prog_tests/send_signal.c index 67cea1686305..54218ee3c004 100644 --- a/tools/testing/selftests/bpf/prog_tests/send_signal.c +++ b/tools/testing/selftests/bpf/prog_tests/send_signal.c @@ -173,6 +173,18 @@ static int test_send_signal_tracepoint(void) return test_send_signal_common(&attr, BPF_PROG_TYPE_TRACEPOINT, "tracepoint"); } +static int test_send_signal_perf(void) +{ + struct perf_event_attr attr = { + .sample_period = 1, + .type = PERF_TYPE_SOFTWARE, + .config = PERF_COUNT_SW_CPU_CLOCK, + }; + + return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, + "perf_sw_event"); +} + static int test_send_signal_nmi(void) { struct perf_event_attr attr = { @@ -181,8 +193,26 @@ static int test_send_signal_nmi(void) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_CPU_CYCLES, }; + int pmu_fd; + + /* Some setups (e.g. virtual machines) might run with hardware + * perf events disabled. If this is the case, skip this test. + */ + pmu_fd = syscall(__NR_perf_event_open, &attr, 0 /* pid */, + -1 /* cpu */, -1 /* group_fd */, 0 /* flags */); + if (pmu_fd == -1) { + if (errno == ENOENT) { + printf("%s:SKIP:no PERF_COUNT_HW_CPU_CYCLES\n", + __func__); + return 0; + } + /* Let the test fail with a more informative message */ + } else { + close(pmu_fd); + } - return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, "perf_event"); + return test_send_signal_common(&attr, BPF_PROG_TYPE_PERF_EVENT, + "perf_hw_event"); } void test_send_signal(void) @@ -190,6 +220,7 @@ void test_send_signal(void) int ret = 0; ret |= test_send_signal_tracepoint(); + ret |= test_send_signal_perf(); ret |= test_send_signal_nmi(); if (!ret) printf("test_send_signal:OK\n"); |