From 6a4bb04caacc8c2d06f345130e9086e3fea38ca7 Mon Sep 17 00:00:00 2001 From: Jiri Olsa Date: Wed, 8 Aug 2012 12:22:36 +0200 Subject: perf tools: Enable grouping logic for parsed events This patch adds a functionality that allows to create event groups based on the way they are specified on the command line. Adding functionality to the '{}' group syntax introduced in earlier patch. The current '--group/-g' option behaviour remains intact. If you specify it for record/stat/top command, all the specified events become members of a single group with the first event as a group leader. With the new '{}' group syntax you can create group like: # perf record -e '{cycles,faults}' ls resulting in single event group containing 'cycles' and 'faults' events, with cycles event as group leader. All groups are created with regards to threads and cpus. Thus recording an event group within a 2 threads on server with 4 CPUs will create 8 separate groups. Examples (first event in brackets is group leader): # 1 group (cpu-clock,task-clock) perf record --group -e cpu-clock,task-clock ls perf record -e '{cpu-clock,task-clock}' ls # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults) perf record -e '{cpu-clock,task-clock},{minor-faults,major-faults}' ls # 1 group (cpu-clock,task-clock,minor-faults,major-faults) perf record --group -e cpu-clock,task-clock -e minor-faults,major-faults ls perf record -e '{cpu-clock,task-clock,minor-faults,major-faults}' ls # 2 groups (cpu-clock,task-clock) (minor-faults,major-faults) perf record -e '{cpu-clock,task-clock} -e '{minor-faults,major-faults}' \ -e instructions ls # 1 group # (cpu-clock,task-clock,minor-faults,major-faults,instructions) perf record --group -e cpu-clock,task-clock \ -e minor-faults,major-faults -e instructions ls perf record -e '{cpu-clock,task-clock,minor-faults,major-faults,instructions}' ls It's possible to use standard event modifier for a group, which spans over all events in the group and updates each event modifier settings, for example: # perf record -r '{faults:k,cache-references}:p' resulting in ':kp' modifier being used for 'faults' and ':p' modifier being used for 'cache-references' event. Reviewed-by: Namhyung Kim Signed-off-by: Jiri Olsa Acked-by: Peter Zijlstra Cc: Andi Kleen Cc: Arnaldo Carvalho de Melo Cc: Corey Ashford Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Ulrich Drepper Link: http://lkml.kernel.org/n/tip-ho42u0wcr8mn1otkalqi13qp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 1d592f5cbea9..9a479b68fc9b 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -294,7 +294,7 @@ static int test__open_syscall_event(void) goto out_thread_map_delete; } - if (perf_evsel__open_per_thread(evsel, threads, false, NULL) < 0) { + if (perf_evsel__open_per_thread(evsel, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", strerror(errno)); @@ -369,7 +369,7 @@ static int test__open_syscall_event_on_all_cpus(void) goto out_thread_map_delete; } - if (perf_evsel__open(evsel, cpus, threads, false, NULL) < 0) { + if (perf_evsel__open(evsel, cpus, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", strerror(errno)); @@ -533,7 +533,7 @@ static int test__basic_mmap(void) perf_evlist__add(evlist, evsels[i]); - if (perf_evsel__open(evsels[i], cpus, threads, false, NULL) < 0) { + if (perf_evsel__open(evsels[i], cpus, threads) < 0) { pr_debug("failed to open counter: %s, " "tweak /proc/sys/kernel/perf_event_paranoid?\n", strerror(errno)); @@ -737,7 +737,7 @@ static int test__PERF_RECORD(void) * Call sys_perf_event_open on all the fds on all the evsels, * grouping them if asked to. */ - err = perf_evlist__open(evlist, opts.group); + err = perf_evlist__open(evlist); if (err < 0) { pr_debug("perf_evlist__open: %s\n", strerror(errno)); goto out_delete_evlist; -- cgit From 0c21f736e0a37c50f66ab248d2a52f711b28a4e4 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 14 Aug 2012 16:42:15 -0300 Subject: perf evlist: Introduce evsel list accessors To replace the longer list_entry constructs for things that are widely used: perf_evlist__{first,last}(evlist) perf_evsel__next(evsel) Acked-by: Jiri Olsa Acked-by: Namhyung Kim Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-ng7azq26wg1jd801qqpcozwp@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 9a479b68fc9b..381d5ab87124 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -710,7 +710,7 @@ static int test__PERF_RECORD(void) /* * Config the evsels, setting attr->comm on the first one, etc. */ - evsel = list_entry(evlist->entries.next, struct perf_evsel, node); + evsel = perf_evlist__first(evlist); evsel->attr.sample_type |= PERF_SAMPLE_CPU; evsel->attr.sample_type |= PERF_SAMPLE_TID; evsel->attr.sample_type |= PERF_SAMPLE_TIME; -- cgit From 8ad7013b252ba683055df19e657eb03d98f4f312 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 6 Sep 2012 13:11:18 -0300 Subject: perf test: Add round trip test for sw and hw event names It basically traverses the hardware and software event name arrays creating an evlist with all events, then it uses perf_evsel__name to check that the name is the expected one. With it I noticed this problem: [root@sandy ~]# perf test 10 10: roundtrip evsel->name check:invalid or unsupported event: 'CPU-migrations' Run 'perf list' for a list of valid events FAILED! Changed it to "cpu-migrations" in the software event arrays and it worked. This is to catch problems like the one reported by Joel Uckelman in http://permalink.gmane.org/gmane.linux.kernel.perf.user/1016 Hardware cache events will be checked in the following patch. Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-5jskfkuqvf2fi257zmni0ftz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 53 insertions(+) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 381d5ab87124..ba94fbe1fa44 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1092,6 +1092,55 @@ static int test__perf_pmu(void) return perf_pmu__test(); } +static int __perf_evsel__name_array_test(const char *names[], int nr_names) +{ + int i, err; + struct perf_evsel *evsel; + struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); + + if (evlist == NULL) + return -ENOMEM; + + for (i = 0; i < nr_names; ++i) { + err = parse_events(evlist, names[i], 0); + if (err) { + pr_debug("failed to parse event '%s', err %d\n", + names[i], err); + goto out_delete_evlist; + } + } + + err = 0; + list_for_each_entry(evsel, &evlist->entries, node) { + if (strcmp(perf_evsel__name(evsel), names[evsel->idx])) { + --err; + pr_debug("%s != %s\n", perf_evsel__name(evsel), names[evsel->idx]); + } + } + +out_delete_evlist: + perf_evlist__delete(evlist); + return err; +} + +#define perf_evsel__name_array_test(names) \ + __perf_evsel__name_array_test(names, ARRAY_SIZE(names)) + +static int perf_evsel__roundtrip_name_test(void) +{ + int err = 0, ret = 0; + + err = perf_evsel__name_array_test(perf_evsel__hw_names); + if (err) + ret = err; + + err = perf_evsel__name_array_test(perf_evsel__sw_names); + if (err) + ret = err; + + return ret; +} + static struct test { const char *desc; int (*func)(void); @@ -1134,6 +1183,10 @@ static struct test { .desc = "Test dso data interface", .func = dso__test_data, }, + { + .desc = "roundtrip evsel->name check", + .func = perf_evsel__roundtrip_name_test, + }, { .func = NULL, }, -- cgit From 49f20d723e25a221fbcf1cbf4e51bb2942326e4f Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Thu, 6 Sep 2012 14:55:44 -0300 Subject: perf test: Add roundtrip test for hardware cache events That nicely catches the problem reported by Joel Uckelman in http://permalink.gmane.org/gmane.linux.kernel.perf.user/1016 : [root@sandy ~]# perf test 1: vmlinux symtab matches kallsyms: Ok 2: detect open syscall event: Ok 3: detect open syscall event on all cpus: Ok 4: read samples using the mmap interface: Ok 5: parse events tests: Ok 6: x86 rdpmc test: Ok 7: Validate PERF_RECORD_* events & perf_sample fields: Ok 8: Test perf pmu format parsing: Ok 9: Test dso data interface: Ok 10: roundtrip evsel->name check: FAILED! [root@sandy ~]# perf test -v 10 10: roundtrip evsel->name check: --- start --- L1-dcache-misses != L1-dcache-load-misses L1-dcache-misses != L1-dcache-store-misses L1-dcache-misses != L1-dcache-prefetch-misses L1-icache-misses != L1-icache-load-misses L1-icache-misses != L1-icache-prefetch-misses LLC-misses != LLC-load-misses LLC-misses != LLC-store-misses LLC-misses != LLC-prefetch-misses dTLB-misses != dTLB-load-misses dTLB-misses != dTLB-store-misses dTLB-misses != dTLB-prefetch-misses iTLB-misses != iTLB-load-misses branch-misses != branch-load-misses node-misses != node-load-misses node-misses != node-store-misses node-misses != node-prefetch-misses ---- end ---- roundtrip evsel->name check: FAILED! [root@sandy ~]# Now lemme apply Jiri's fix and try it again... Cc: David Ahern Cc: Frederic Weisbecker Cc: Joel Uckelman Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-bbewtxw0rfipp5qy1j3jtg5d@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index ba94fbe1fa44..cf33e5081c36 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1092,6 +1092,63 @@ static int test__perf_pmu(void) return perf_pmu__test(); } +static int perf_evsel__roundtrip_cache_name_test(void) +{ + char name[128]; + int type, op, err = 0, ret = 0, i, idx; + struct perf_evsel *evsel; + struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); + + if (evlist == NULL) + return -ENOMEM; + + for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { + for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { + /* skip invalid cache type */ + if (!perf_evsel__is_cache_op_valid(type, op)) + continue; + + for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { + __perf_evsel__hw_cache_type_op_res_name(type, op, i, + name, sizeof(name)); + err = parse_events(evlist, name, 0); + if (err) + ret = err; + } + } + } + + idx = 0; + evsel = perf_evlist__first(evlist); + + for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) { + for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) { + /* skip invalid cache type */ + if (!perf_evsel__is_cache_op_valid(type, op)) + continue; + + for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) { + __perf_evsel__hw_cache_type_op_res_name(type, op, i, + name, sizeof(name)); + if (evsel->idx != idx) + continue; + + ++idx; + + if (strcmp(perf_evsel__name(evsel), name)) { + pr_debug("%s != %s\n", perf_evsel__name(evsel), name); + ret = -1; + } + + evsel = perf_evsel__next(evsel); + } + } + } + + perf_evlist__delete(evlist); + return ret; +} + static int __perf_evsel__name_array_test(const char *names[], int nr_names) { int i, err; @@ -1138,6 +1195,10 @@ static int perf_evsel__roundtrip_name_test(void) if (err) ret = err; + err = perf_evsel__roundtrip_cache_name_test(); + if (err) + ret = err; + return ret; } -- cgit From 32c7f7383a096a4fc878fdda686c7725945e8a8f Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Sat, 8 Sep 2012 22:53:06 -0300 Subject: perf test: Remove die() calls Just use pr_err() + return -1 and let the other tests run as well and then the perf's main() exit doing whatever it needs. Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-n5ahw26e94klmde9cz6rxsdf@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index cf33e5081c36..6ae102eba5fa 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1023,14 +1023,16 @@ static int __test__rdpmc(void) fd = sys_perf_event_open(&attr, 0, -1, -1, 0); if (fd < 0) { - die("Error: sys_perf_event_open() syscall returned " - "with %d (%s)\n", fd, strerror(errno)); + pr_debug("Error: sys_perf_event_open() syscall returned " + "with %d (%s)\n", fd, strerror(errno)); + return -1; } addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); if (addr == (void *)(-1)) { - die("Error: mmap() syscall returned " - "with (%s)\n", strerror(errno)); + pr_debug("Error: mmap() syscall returned with (%s)\n", + strerror(errno)); + goto out_close; } for (n = 0; n < 6; n++) { @@ -1051,9 +1053,9 @@ static int __test__rdpmc(void) } munmap(addr, page_size); - close(fd); - pr_debug(" "); +out_close: + close(fd); if (!delta_sum) return -1; -- cgit From 1d037ca1648b775277fc96401ec2aa233724906c Mon Sep 17 00:00:00 2001 From: Irina Tirdea Date: Tue, 11 Sep 2012 01:15:03 +0300 Subject: perf tools: Use __maybe_used for unused variables perf defines both __used and __unused variables to use for marking unused variables. The variable __used is defined to __attribute__((__unused__)), which contradicts the kernel definition to __attribute__((__used__)) for new gcc versions. On Android, __used is also defined in system headers and this leads to warnings like: warning: '__used__' attribute ignored __unused is not defined in the kernel and is not a standard definition. If __unused is included everywhere instead of __used, this leads to conflicts with glibc headers, since glibc has a variables with this name in its headers. The best approach is to use __maybe_unused, the definition used in the kernel for __attribute__((unused)). In this way there is only one definition in perf sources (instead of 2 definitions that point to the same thing: __used and __unused) and it works on both Linux and Android. This patch simply replaces all instances of __used and __unused with __maybe_unused. Signed-off-by: Irina Tirdea Acked-by: Pekka Enberg Cc: David Ahern Cc: Ingo Molnar Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Steven Rostedt Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com [ committer note: fixed up conflict with a116e05 in builtin-sched.c ] Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 6ae102eba5fa..d33143efefce 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -18,7 +18,8 @@ #include -static int vmlinux_matches_kallsyms_filter(struct map *map __used, struct symbol *sym) +static int vmlinux_matches_kallsyms_filter(struct map *map __maybe_unused, + struct symbol *sym) { bool *visited = symbol__priv(sym); *visited = true; @@ -996,7 +997,9 @@ static u64 mmap_read_self(void *addr) /* * If the RDPMC instruction faults then signal this back to the test parent task: */ -static void segfault_handler(int sig __used, siginfo_t *info __used, void *uc __used) +static void segfault_handler(int sig __maybe_unused, + siginfo_t *info __maybe_unused, + void *uc __maybe_unused) { exit(-1); } @@ -1315,7 +1318,7 @@ static int perf_test__list(int argc, const char **argv) return 0; } -int cmd_test(int argc, const char **argv, const char *prefix __used) +int cmd_test(int argc, const char **argv, const char *prefix __maybe_unused) { const char * const test_usage[] = { "perf test [] [{list |[|]}]", -- cgit From bb77ac3a36f896bc6acdfcafdebfa1434f775ed4 Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Wed, 12 Sep 2012 11:11:05 +0900 Subject: perf test: Fixup for the die() removal The commit 32c7f7383a09 ("perf test: Remove die() calls") replaced die() call to pr_debug + return -1, but it should be pr_err otherwise it'll not show up unless -v option is given. Fix it. Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1347415866-303-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index d33143efefce..4aed1553db56 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1026,15 +1026,15 @@ static int __test__rdpmc(void) fd = sys_perf_event_open(&attr, 0, -1, -1, 0); if (fd < 0) { - pr_debug("Error: sys_perf_event_open() syscall returned " - "with %d (%s)\n", fd, strerror(errno)); + pr_err("Error: sys_perf_event_open() syscall returned " + "with %d (%s)\n", fd, strerror(errno)); return -1; } addr = mmap(NULL, page_size, PROT_READ, MAP_SHARED, fd, 0); if (addr == (void *)(-1)) { - pr_debug("Error: mmap() syscall returned with (%s)\n", - strerror(errno)); + pr_err("Error: mmap() syscall returned with (%s)\n", + strerror(errno)); goto out_close; } -- cgit From 6a6cd11d4e5793ce1a2fb88dc7a09dbf43f9c618 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 18 Sep 2012 11:56:28 -0300 Subject: perf test: Add test for the sched tracepoint format fields So that we make sure the routines that do event format parsing are working on at least two well know scheduler tracepoints. Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-g3rm9b3wtim4djx3z8dkftrj@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 4aed1553db56..32caf13cfe01 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -14,6 +14,7 @@ #include "util/symbol.h" #include "util/thread_map.h" #include "util/pmu.h" +#include "event-parse.h" #include "../../include/linux/hw_breakpoint.h" #include @@ -1207,6 +1208,87 @@ static int perf_evsel__roundtrip_name_test(void) return ret; } +static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name, + int size, bool should_be_signed) +{ + struct format_field *field = perf_evsel__field(evsel, name); + int is_signed; + int ret = 0; + + if (field == NULL) { + pr_debug("%s: \"%s\" field not found!\n", evsel->name, name); + return -1; + } + + is_signed = !!(field->flags | FIELD_IS_SIGNED); + if (should_be_signed && !is_signed) { + pr_debug("%s: \"%s\" signedness(%d) is wrong, should be %d\n", + evsel->name, name, is_signed, should_be_signed); + ret = -1; + } + + if (field->size != size) { + pr_debug("%s: \"%s\" size (%d) should be %d!\n", + evsel->name, name, field->size, size); + ret = -1; + } + + return 0; +} + +static int perf_evsel__tp_sched_test(void) +{ + struct perf_evsel *evsel = perf_evsel__newtp("sched", "sched_switch", 0); + int ret = 0; + + if (evsel == NULL) { + pr_debug("perf_evsel__new\n"); + return -1; + } + + if (perf_evsel__test_field(evsel, "prev_comm", 16, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_prio", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prev_state", 8, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_comm", 16, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "next_prio", 4, true)) + ret = -1; + + perf_evsel__delete(evsel); + + evsel = perf_evsel__newtp("sched", "sched_wakeup", 0); + + if (perf_evsel__test_field(evsel, "comm", 16, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "pid", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "prio", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "success", 4, true)) + ret = -1; + + if (perf_evsel__test_field(evsel, "target_cpu", 4, true)) + ret = -1; + + return 0; +} + static struct test { const char *desc; int (*func)(void); @@ -1253,6 +1335,10 @@ static struct test { .desc = "roundtrip evsel->name check", .func = perf_evsel__roundtrip_name_test, }, + { + .desc = "Check parsing of sched tracepoints fields", + .func = perf_evsel__tp_sched_test, + }, { .func = NULL, }, -- cgit From af9da88f14cbe6882b13492b59b3363682427b4d Mon Sep 17 00:00:00 2001 From: Namhyung Kim Date: Tue, 25 Sep 2012 11:20:28 +0900 Subject: perf test: Fix build failure MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The commit 6a6cd11d4e57 ("perf test: Add test for the sched tracepoint format fields") added following build error: CC builtin-test.o builtin-test.c: In function ‘perf_evsel__test_field’: builtin-test.c:1216:6: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable] builtin-test.c: In function ‘perf_evsel__tp_sched_test’: builtin-test.c:1242:6: error: variable ‘ret’ set but not used [-Werror=unused-but-set-variable] cc1: all warnings being treated as errors make: *** [builtin-test.o] Error 1 Signed-off-by: Namhyung Kim Cc: Ingo Molnar Cc: Paul Mackerras Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/1348539628-3821-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 32caf13cfe01..78b47a75a7c9 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1233,7 +1233,7 @@ static int perf_evsel__test_field(struct perf_evsel *evsel, const char *name, ret = -1; } - return 0; + return ret; } static int perf_evsel__tp_sched_test(void) @@ -1286,7 +1286,7 @@ static int perf_evsel__tp_sched_test(void) if (perf_evsel__test_field(evsel, "target_cpu", 4, true)) ret = -1; - return 0; + return ret; } static struct test { -- cgit From 0807d2d8a381f4fc600ad481c3e77e5cdb624eed Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Sep 2012 12:48:18 -0300 Subject: perf evsel: Know if byte swap is needed Instead of passing it around for parsing as an explicit parameter, will help with reading tracepoint fields when not using a perf session or pevent structure, i.e. for non perf.data centered workflows. Cc: David Ahern Cc: Frederic Weisbecker Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-qa67ikv2sm49cwa7dyjhhp6g@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 78b47a75a7c9..2fd2c031f627 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -564,7 +564,7 @@ static int test__basic_mmap(void) goto out_munmap; } - err = perf_evlist__parse_sample(evlist, event, &sample, false); + err = perf_evlist__parse_sample(evlist, event, &sample); if (err) { pr_err("Can't parse sample, err = %d\n", err); goto out_munmap; @@ -781,7 +781,7 @@ static int test__PERF_RECORD(void) if (type < PERF_RECORD_MAX) nr_events[type]++; - err = perf_evlist__parse_sample(evlist, event, &sample, false); + err = perf_evlist__parse_sample(evlist, event, &sample); if (err < 0) { if (verbose) perf_event__fprintf(event, stderr); -- cgit From eb2f270338461a4de659a21946739748160c0816 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Wed, 26 Sep 2012 13:23:10 -0300 Subject: perf test: Add test to check we correctly parse and match syscall open parms It will set up a syscall open tracepoint event, generate an open with invalid flags, then check those flags were the ones reported in the tracepoint fired. For the filename we need vfs:getname, but that will go thru some more iterations as the vfs getname codebase is going thru changes lately. When that is in I'll just check that the perf_evsel__newtp constructor is not bailing out and then add it to the evlist, catch the event and check the filename against the one used in the 'open' call used to trigger the event. Cc: David Ahern Cc: Eric Paris Cc: Frederic Weisbecker Cc: Jeff Layton Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/n/tip-p5w9aq0jcbb91ghzqomowm16@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-test.c | 116 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 116 insertions(+) (limited to 'tools/perf/builtin-test.c') diff --git a/tools/perf/builtin-test.c b/tools/perf/builtin-test.c index 2fd2c031f627..484f26cc0c00 100644 --- a/tools/perf/builtin-test.c +++ b/tools/perf/builtin-test.c @@ -1289,6 +1289,118 @@ static int perf_evsel__tp_sched_test(void) return ret; } +static int test__syscall_open_tp_fields(void) +{ + struct perf_record_opts opts = { + .target = { + .uid = UINT_MAX, + .uses_mmap = true, + }, + .no_delay = true, + .freq = 1, + .mmap_pages = 256, + .raw_samples = true, + }; + const char *filename = "/etc/passwd"; + int flags = O_RDONLY | O_DIRECTORY; + struct perf_evlist *evlist = perf_evlist__new(NULL, NULL); + struct perf_evsel *evsel; + int err = -1, i, nr_events = 0, nr_polls = 0; + + if (evlist == NULL) { + pr_debug("%s: perf_evlist__new\n", __func__); + goto out; + } + + evsel = perf_evsel__newtp("syscalls", "sys_enter_open", 0); + if (evsel == NULL) { + pr_debug("%s: perf_evsel__newtp\n", __func__); + goto out_delete_evlist; + } + + perf_evlist__add(evlist, evsel); + + err = perf_evlist__create_maps(evlist, &opts.target); + if (err < 0) { + pr_debug("%s: perf_evlist__create_maps\n", __func__); + goto out_delete_evlist; + } + + perf_evsel__config(evsel, &opts, evsel); + + evlist->threads->map[0] = getpid(); + + err = perf_evlist__open(evlist); + if (err < 0) { + pr_debug("perf_evlist__open: %s\n", strerror(errno)); + goto out_delete_evlist; + } + + err = perf_evlist__mmap(evlist, UINT_MAX, false); + if (err < 0) { + pr_debug("perf_evlist__mmap: %s\n", strerror(errno)); + goto out_delete_evlist; + } + + perf_evlist__enable(evlist); + + /* + * Generate the event: + */ + open(filename, flags); + + while (1) { + int before = nr_events; + + for (i = 0; i < evlist->nr_mmaps; i++) { + union perf_event *event; + + while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { + const u32 type = event->header.type; + int tp_flags; + struct perf_sample sample; + + ++nr_events; + + if (type != PERF_RECORD_SAMPLE) + continue; + + err = perf_evsel__parse_sample(evsel, event, &sample); + if (err) { + pr_err("Can't parse sample, err = %d\n", err); + goto out_munmap; + } + + tp_flags = perf_evsel__intval(evsel, &sample, "flags"); + + if (flags != tp_flags) { + pr_debug("%s: Expected flags=%#x, got %#x\n", + __func__, flags, tp_flags); + goto out_munmap; + } + + goto out_ok; + } + } + + if (nr_events == before) + poll(evlist->pollfd, evlist->nr_fds, 10); + + if (++nr_polls > 5) { + pr_debug("%s: no events!\n", __func__); + goto out_munmap; + } + } +out_ok: + err = 0; +out_munmap: + perf_evlist__munmap(evlist); +out_delete_evlist: + perf_evlist__delete(evlist); +out: + return err; +} + static struct test { const char *desc; int (*func)(void); @@ -1339,6 +1451,10 @@ static struct test { .desc = "Check parsing of sched tracepoints fields", .func = perf_evsel__tp_sched_test, }, + { + .desc = "Generate and check syscalls:sys_enter_open event fields", + .func = test__syscall_open_tp_fields, + }, { .func = NULL, }, -- cgit