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Add a helper function that can be used to determine the correct breakpoint length, in this change it just returns the existing default sizeof(long) value. Use the helper in the bp_account test so that, when modifying the event from a watchpoint to a breakpoint, the breakpoint length is appropriate for the architecture and not just sizeof(long). Signed-off-by: Ian Rogers --- tools/perf/tests/bp_account.c | 4 +++- tools/perf/tests/bp_signal.c | 3 ++- tools/perf/tests/bp_signal_overflow.c | 3 ++- tools/perf/tests/parse-events.c | 3 ++- tools/perf/util/parse-events.c | 7 ++++++- tools/perf/util/parse-events.h | 2 ++ 6 files changed, 17 insertions(+), 5 deletions(-) diff --git a/tools/perf/tests/bp_account.c b/tools/perf/tests/bp_account.c index 6f921db33cf9..4cb7d486b5c1 100644 --- a/tools/perf/tests/bp_account.c +++ b/tools/perf/tests/bp_account.c @@ -16,6 +16,7 @@ #include "tests.h" #include "debug.h" #include "event.h" +#include "parse-events.h" #include "../perf-sys.h" #include "cloexec.h" =20 @@ -50,7 +51,7 @@ static int __event(bool is_x, void *addr, struct perf_eve= nt_attr *attr) attr->config =3D 0; attr->bp_type =3D is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W; attr->bp_addr =3D (unsigned long) addr; - attr->bp_len =3D sizeof(long); + attr->bp_len =3D is_x ? default_breakpoint_len() : sizeof(long); =20 attr->sample_period =3D 1; attr->sample_type =3D PERF_SAMPLE_IP; @@ -92,6 +93,7 @@ static int bp_accounting(int wp_cnt, int share) attr_mod =3D attr; attr_mod.bp_type =3D HW_BREAKPOINT_X; attr_mod.bp_addr =3D (unsigned long) test_function; + attr_mod.bp_len =3D default_breakpoint_len(); =20 ret =3D ioctl(fd[0], PERF_EVENT_IOC_MODIFY_ATTRIBUTES, &attr_mod); TEST_ASSERT_VAL("failed to modify wp\n", ret =3D=3D 0); diff --git a/tools/perf/tests/bp_signal.c b/tools/perf/tests/bp_signal.c index 1f2908f02389..3faeb5b6fe0b 100644 --- a/tools/perf/tests/bp_signal.c +++ b/tools/perf/tests/bp_signal.c @@ -26,6 +26,7 @@ #include "tests.h" #include "debug.h" #include "event.h" +#include "parse-events.h" #include "perf-sys.h" #include "cloexec.h" =20 @@ -111,7 +112,7 @@ static int __event(bool is_x, void *addr, int sig) pe.config =3D 0; pe.bp_type =3D is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W; pe.bp_addr =3D (unsigned long) addr; - pe.bp_len =3D sizeof(long); + pe.bp_len =3D is_x ? default_breakpoint_len() : sizeof(long); =20 pe.sample_period =3D 1; pe.sample_type =3D PERF_SAMPLE_IP; diff --git a/tools/perf/tests/bp_signal_overflow.c b/tools/perf/tests/bp_si= gnal_overflow.c index 4e897c2cf26b..ee560e156be6 100644 --- a/tools/perf/tests/bp_signal_overflow.c +++ b/tools/perf/tests/bp_signal_overflow.c @@ -25,6 +25,7 @@ #include "tests.h" #include "debug.h" #include "event.h" +#include "parse-events.h" #include "../perf-sys.h" #include "cloexec.h" =20 @@ -88,7 +89,7 @@ static int test__bp_signal_overflow(struct test_suite *te= st __maybe_unused, int pe.config =3D 0; pe.bp_type =3D HW_BREAKPOINT_X; pe.bp_addr =3D (unsigned long) test_function; - pe.bp_len =3D sizeof(long); + pe.bp_len =3D default_breakpoint_len(); =20 pe.sample_period =3D THRESHOLD; pe.sample_type =3D PERF_SAMPLE_IP; diff --git a/tools/perf/tests/parse-events.c b/tools/perf/tests/parse-event= s.c index edc2adcf1bae..0681653b12d2 100644 --- a/tools/perf/tests/parse-events.c +++ b/tools/perf/tests/parse-events.c @@ -5,6 +5,7 @@ #include #include "tests.h" #include "debug.h" +#include "parse-events.h" #include "pmu.h" #include "pmus.h" #include @@ -262,7 +263,7 @@ static int test__checkevent_breakpoint_x(struct evlist = *evlist) TEST_ASSERT_VAL("wrong config", test_config(evsel, 0)); TEST_ASSERT_VAL("wrong bp_type", HW_BREAKPOINT_X =3D=3D evsel->core.attr.bp_type); - TEST_ASSERT_VAL("wrong bp_len", sizeof(long) =3D=3D evsel->core.attr.bp_l= en); + TEST_ASSERT_VAL("wrong bp_len", default_breakpoint_len() =3D=3D (int)evse= l->core.attr.bp_len); return TEST_OK; } =20 diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c index fab01ba54e34..dfb951bb184b 100644 --- a/tools/perf/util/parse-events.c +++ b/tools/perf/util/parse-events.c @@ -670,6 +670,11 @@ static int add_tracepoint_multi_sys(struct parse_event= s_state *parse_state, } #endif /* HAVE_LIBTRACEEVENT */ =20 +int default_breakpoint_len(void) +{ + return sizeof(long); +} + static int parse_breakpoint_type(const char *type, struct perf_event_attr *attr) { @@ -728,7 +733,7 @@ int parse_events_add_breakpoint(struct parse_events_sta= te *parse_state, /* Provide some defaults if len is not specified */ if (!len) { if (attr.bp_type =3D=3D HW_BREAKPOINT_X) - len =3D sizeof(long); + len =3D default_breakpoint_len(); else len =3D HW_BREAKPOINT_LEN_4; } diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h index b735cd9e0acf..f79d076cd1bd 100644 --- a/tools/perf/util/parse-events.h +++ b/tools/perf/util/parse-events.h @@ -286,4 +286,6 @@ static inline bool is_sdt_event(char *str __maybe_unuse= d) } #endif /* HAVE_LIBELF_SUPPORT */ =20 +int default_breakpoint_len(void); + #endif /* __PERF_PARSE_EVENTS_H */ --=20 2.46.0.469.g59c65b2a67-goog