diff options
Diffstat (limited to 'tools/perf/tests/bp_signal_overflow.c')
| -rw-r--r-- | tools/perf/tests/bp_signal_overflow.c | 23 |
1 files changed, 17 insertions, 6 deletions
diff --git a/tools/perf/tests/bp_signal_overflow.c b/tools/perf/tests/bp_signal_overflow.c index 44ac82179708..ee560e156be6 100644 --- a/tools/perf/tests/bp_signal_overflow.c +++ b/tools/perf/tests/bp_signal_overflow.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0 /* * Originally done by Vince Weaver <vincent.weaver@maine.edu> for * perf_event_tests (git://github.com/deater/perf_event_tests) @@ -23,12 +24,14 @@ #include "tests.h" #include "debug.h" -#include "perf.h" +#include "event.h" +#include "parse-events.h" +#include "../perf-sys.h" +#include "cloexec.h" static int overflows; -__attribute__ ((noinline)) -static int test_function(void) +static noinline int test_function(void) { return time(NULL); } @@ -57,13 +60,18 @@ static long long bp_count(int fd) #define EXECUTIONS 10000 #define THRESHOLD 100 -int test__bp_signal_overflow(void) +static int test__bp_signal_overflow(struct test_suite *test __maybe_unused, int subtest __maybe_unused) { struct perf_event_attr pe; struct sigaction sa; long long count; int fd, i, fails = 0; + if (!BP_SIGNAL_IS_SUPPORTED) { + pr_debug("Test not supported on this architecture"); + return TEST_SKIP; + } + /* setup SIGIO signal handler */ memset(&sa, 0, sizeof(struct sigaction)); sa.sa_sigaction = (void *) sig_handler; @@ -81,7 +89,7 @@ int test__bp_signal_overflow(void) pe.config = 0; pe.bp_type = HW_BREAKPOINT_X; pe.bp_addr = (unsigned long) test_function; - pe.bp_len = sizeof(long); + pe.bp_len = default_breakpoint_len(); pe.sample_period = THRESHOLD; pe.sample_type = PERF_SAMPLE_IP; @@ -91,7 +99,8 @@ int test__bp_signal_overflow(void) pe.exclude_kernel = 1; pe.exclude_hv = 1; - fd = sys_perf_event_open(&pe, 0, -1, -1, 0); + fd = sys_perf_event_open(&pe, 0, -1, -1, + perf_event_open_cloexec_flag()); if (fd < 0) { pr_debug("failed opening event %llx\n", pe.config); return TEST_FAIL; @@ -130,3 +139,5 @@ int test__bp_signal_overflow(void) return fails ? TEST_FAIL : TEST_OK; } + +DEFINE_SUITE("Breakpoint overflow sampling", bp_signal_overflow); |