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Groups > linux.kernel > #1306227
| From | Wang Nan <wangnan0@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 17/53] perf test: Improve bp_signal |
| Date | 2016-01-11 15:00 +0100 |
| Message-ID | <qPLaO-38k-11@gated-at.bofh.it> (permalink) |
| References | <qPL17-34y-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Will Deacon [1] has some question on patch [2]. This patch improves
test__bp_signal so we can test:
1. A watchpoint and a breakpoint that fire on the same instruction
2. Nested signals
Test result:
On x86_64 and ARM64 (result are similar with patch [2] on ARM64):
# ./perf test -v signal
17: Test breakpoint overflow signal handler :
--- start ---
test child forked, pid 10213
count1 1, count2 3, count3 2, overflow 3, overflows_2 3
test child finished with 0
---- end ----
Test breakpoint overflow signal handler: Ok
So at least 2 cases Will doubted are handled correctly.
[1] http://lkml.kernel.org/g/20160104165535.GI1616@arm.com
[2] http://lkml.kernel.org/g/1450921362-198371-1-git-send-email-wangnan0@huawei.com
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/tests/bp_signal.c | 140 ++++++++++++++++++++++++++++++++++++-------
1 file changed, 118 insertions(+), 22 deletions(-)
diff --git a/tools/perf/tests/bp_signal.c b/tools/perf/tests/bp_signal.c
index fb80c9e..1d1bb48 100644
--- a/tools/perf/tests/bp_signal.c
+++ b/tools/perf/tests/bp_signal.c
@@ -29,14 +29,59 @@
static int fd1;
static int fd2;
+static int fd3;
static int overflows;
+static int overflows_2;
+
+volatile long the_var;
+
+
+/*
+ * Use ASM to ensure watchpoint and breakpoint can be triggered
+ * at one instruction.
+ */
+#if defined (__x86_64__)
+extern void __test_function(volatile long *ptr);
+asm (
+ ".globl __test_function\n"
+ "__test_function:\n"
+ "incq (%rdi)\n"
+ "ret\n");
+#elif defined (__aarch64__)
+extern void __test_function(volatile long *ptr);
+asm (
+ ".globl __test_function\n"
+ "__test_function:\n"
+ "str x30, [x0]\n"
+ "ret\n");
+
+#else
+static void __test_function(volatile long *ptr)
+{
+ *ptr = 0x1234;
+}
+#endif
__attribute__ ((noinline))
static int test_function(void)
{
+ __test_function(&the_var);
+ the_var++;
return time(NULL);
}
+static void sig_handler_2(int signum __maybe_unused,
+ siginfo_t *oh __maybe_unused,
+ void *uc __maybe_unused)
+{
+ overflows_2++;
+ if (overflows_2 > 10) {
+ ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0);
+ ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0);
+ ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0);
+ }
+}
+
static void sig_handler(int signum __maybe_unused,
siginfo_t *oh __maybe_unused,
void *uc __maybe_unused)
@@ -54,10 +99,11 @@ static void sig_handler(int signum __maybe_unused,
*/
ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0);
ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0);
+ ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0);
}
}
-static int bp_event(void *fn, int setup_signal)
+static int __event(bool is_x, void *addr, int signal)
{
struct perf_event_attr pe;
int fd;
@@ -67,8 +113,8 @@ static int bp_event(void *fn, int setup_signal)
pe.size = sizeof(struct perf_event_attr);
pe.config = 0;
- pe.bp_type = HW_BREAKPOINT_X;
- pe.bp_addr = (unsigned long) fn;
+ pe.bp_type = is_x ? HW_BREAKPOINT_X : HW_BREAKPOINT_W;
+ pe.bp_addr = (unsigned long) addr;
pe.bp_len = sizeof(long);
pe.sample_period = 1;
@@ -86,17 +132,25 @@ static int bp_event(void *fn, int setup_signal)
return TEST_FAIL;
}
- if (setup_signal) {
- fcntl(fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC);
- fcntl(fd, F_SETSIG, SIGIO);
- fcntl(fd, F_SETOWN, getpid());
- }
+ fcntl(fd, F_SETFL, O_RDWR|O_NONBLOCK|O_ASYNC);
+ fcntl(fd, F_SETSIG, signal);
+ fcntl(fd, F_SETOWN, getpid());
ioctl(fd, PERF_EVENT_IOC_RESET, 0);
return fd;
}
+static int bp_event(void *addr, int signal)
+{
+ return __event(true, addr, signal);
+}
+
+static int wp_event(void *addr, int signal)
+{
+ return __event(false, addr, signal);
+}
+
static long long bp_count(int fd)
{
long long count;
@@ -114,7 +168,7 @@ static long long bp_count(int fd)
int test__bp_signal(int subtest __maybe_unused)
{
struct sigaction sa;
- long long count1, count2;
+ long long count1, count2, count3;
/* setup SIGIO signal handler */
memset(&sa, 0, sizeof(struct sigaction));
@@ -126,21 +180,52 @@ int test__bp_signal(int subtest __maybe_unused)
return TEST_FAIL;
}
+ sa.sa_sigaction = (void *) sig_handler_2;
+ if (sigaction(SIGUSR1, &sa, NULL) < 0) {
+ pr_debug("failed setting up signal handler 2\n");
+ return TEST_FAIL;
+ }
+
/*
* We create following events:
*
- * fd1 - breakpoint event on test_function with SIGIO
+ * fd1 - breakpoint event on __test_function with SIGIO
* signal configured. We should get signal
* notification each time the breakpoint is hit
*
- * fd2 - breakpoint event on sig_handler without SIGIO
+ * fd2 - breakpoint event on sig_handler with SIGUSR1
+ * configured. We should get SIGUSR1 each time when
+ * breakpoint is hit
+ *
+ * fd3 - watchpoint event on __test_function with SIGIO
* configured.
*
* Following processing should happen:
- * - execute test_function
- * - fd1 event breakpoint hit -> count1 == 1
- * - SIGIO is delivered -> overflows == 1
- * - fd2 event breakpoint hit -> count2 == 1
+ * Exec: Action: Result:
+ * incq (%rdi) - fd1 event breakpoint hit -> count1 == 1
+ * - SIGIO is delivered
+ * sig_handler - fd2 event breakpoint hit -> count2 == 1
+ * - SIGUSR1 is delivered
+ * sig_handler_2 -> overflows_2 == 1 (nested signal)
+ * sys_rt_sigreturn - return from sig_handler_2
+ * overflows++ -> overflows = 1
+ * sys_rt_sigreturn - return from sig_handler
+ * incq (%rdi) - fd3 event watchpoint hit -> count3 == 1 (wp and bp in one insn)
+ * - SIGIO is delivered
+ * sig_handler - fd2 event breakpoint hit -> count2 == 2
+ * - SIGUSR1 is delivered
+ * sig_handler_2 -> overflows_2 == 2 (nested signal)
+ * sys_rt_sigreturn - return from sig_handler_2
+ * overflows++ -> overflows = 2
+ * sys_rt_sigreturn - return from sig_handler
+ * the_var++ - fd3 event watchpoint hit -> count3 == 2 (standalone watchpoint)
+ * - SIGIO is delivered
+ * sig_handler - fd2 event breakpoint hit -> count2 == 3
+ * - SIGUSR1 is delivered
+ * sig_handler_2 -> overflows_2 == 3 (nested signal)
+ * sys_rt_sigreturn - return from sig_handler_2
+ * overflows++ -> overflows == 3
+ * sys_rt_sigreturn - return from sig_handler
*
* The test case check following error conditions:
* - we get stuck in signal handler because of debug
@@ -152,11 +237,13 @@ int test__bp_signal(int subtest __maybe_unused)
*
*/
- fd1 = bp_event(test_function, 1);
- fd2 = bp_event(sig_handler, 0);
+ fd1 = bp_event(__test_function, SIGIO);
+ fd2 = bp_event(sig_handler, SIGUSR1);
+ fd3 = wp_event((void *)&the_var, SIGIO);
ioctl(fd1, PERF_EVENT_IOC_ENABLE, 0);
ioctl(fd2, PERF_EVENT_IOC_ENABLE, 0);
+ ioctl(fd3, PERF_EVENT_IOC_ENABLE, 0);
/*
* Kick off the test by trigering 'fd1'
@@ -166,15 +253,18 @@ int test__bp_signal(int subtest __maybe_unused)
ioctl(fd1, PERF_EVENT_IOC_DISABLE, 0);
ioctl(fd2, PERF_EVENT_IOC_DISABLE, 0);
+ ioctl(fd3, PERF_EVENT_IOC_DISABLE, 0);
count1 = bp_count(fd1);
count2 = bp_count(fd2);
+ count3 = bp_count(fd3);
close(fd1);
close(fd2);
+ close(fd3);
- pr_debug("count1 %lld, count2 %lld, overflow %d\n",
- count1, count2, overflows);
+ pr_debug("count1 %lld, count2 %lld, count3 %lld, overflow %d, overflows_2 %d\n",
+ count1, count2, count3, overflows, overflows_2);
if (count1 != 1) {
if (count1 == 11)
@@ -183,12 +273,18 @@ int test__bp_signal(int subtest __maybe_unused)
pr_debug("failed: wrong count for bp1%lld\n", count1);
}
- if (overflows != 1)
+ if (overflows != 3)
pr_debug("failed: wrong overflow hit\n");
- if (count2 != 1)
+ if (overflows_2 != 3)
+ pr_debug("failed: wrong overflow_2 hit\n");
+
+ if (count2 != 3)
pr_debug("failed: wrong count for bp2\n");
- return count1 == 1 && overflows == 1 && count2 == 1 ?
+ if (count3 != 2)
+ pr_debug("failed: wrong count for bp3\n");
+
+ return count1 == 1 && overflows == 3 && count2 == 3 && overflows_2 == 3 && count3 == 2 ?
TEST_OK : TEST_FAIL;
}
--
1.8.3.4
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[PATCH 00/53] perf tools: Bugfix, BPF improvement and perf record flight record mode Wang Nan <wangnan0@huawei.com> - 2016-01-11 14:50 +0100
[PATCH 44/53] perf tools: Automatically add new channel according to evlist Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 01/53] perf tools: Add -lutil in python lib list for broken python-config Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
Re: [PATCH 01/53] perf tools: Add -lutil in python lib list for broken python-config Jiri Olsa <jolsa@redhat.com> - 2016-01-12 10:50 +0100
[tip:perf/urgent] perf tools: Add -lutil in python lib list for broken python-config tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:10 +0100
[PATCH 09/53] perf: bpf: Fix build breakage due to libbpf Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[tip:perf/urgent] perf bpf: Fix build breakage due to libbpf "tip-bot for Naveen N. Rao" <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 52/53] perf record: Toggle tailsize ring buffer for reading Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 17/53] perf test: Improve bp_signal Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
Re: [PATCH 17/53] perf test: Improve bp_signal Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 22:40 +0100
Re: [PATCH 17/53] perf test: Improve bp_signal "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-12 05:20 +0100
Re: [PATCH 17/53] perf test: Improve bp_signal Jiri Olsa <jolsa@redhat.com> - 2016-01-12 10:30 +0100
Re: [PATCH 17/53] perf test: Improve bp_signal Will Deacon <will.deacon@arm.com> - 2016-01-12 15:20 +0100
Re: [PATCH 17/53] perf test: Improve bp_signal Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 15:20 +0100
[PATCH 47/53] perf record: Don't read from and poll overwrite channel Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 28/53] perf tools: Move timestamp creation to util Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 39/53] perf record: Re-synthesize tracking events after output switching Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 33/53] perf record: Introduce record__finish_output() to finish a perf.data Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 46/53] perf tools: Squash overwrite setting into channel Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 34/53] perf record: Use OPT_BOOLEAN_SET for buildid cache related options Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 43/53] perf tools: Add evlist channel helpers Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 51/53] perf record: Read from tailsize ring buffer Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 42/53] perf record: Prevent reading invalid data in record__mmap_read Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
Re: [PATCH 42/53] perf record: Prevent reading invalid data in record__mmap_read Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-01-11 15:30 +0100
Re: [PATCH 42/53] perf record: Prevent reading invalid data in record__mmap_read Arnaldo Carvalho de Melo <acme@redhat.com> - 2016-01-11 16:10 +0100
Re: [PATCH 42/53] perf record: Prevent reading invalid data in record__mmap_read Arnaldo Carvalho de Melo <acme@redhat.com> - 2016-01-11 16:10 +0100
[PATCH 40/53] perf record: Generate tracking events for process forked by perf Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 41/53] perf record: Ensure return non-zero rc when mmap fail Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 49/53] perf tools: Consider TAILSIZE bit when caclulate is_pos Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 31/53] perf tools: Add perf_data_file__switch() helper Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 50/53] perf tools: Set tailsize attribut bit for overwrite events Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 45/53] perf tools: Operate multiple channels Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 30/53] perf record: Extract synthesize code to record__synthesize() Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 07/53] tools: Move Makefile.arch from perf/config to tools/scripts Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
Re: [PATCH 07/53] tools: Move Makefile.arch from perf/config to tools/scripts "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 07/53] tools: Move Makefile.arch from perf/config to tools/scripts Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 15:20 +0100
[tip:perf/urgent] tools: Move Makefile.arch from perf/ config to tools/scripts tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 53/53] perf record: Allow generate tracking events at the end of output Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 48/53] perf tools: Enable overwrite settings Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:00 +0100
[PATCH 11/53] perf test: Fix false TEST_OK result for 'perf test hist' Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 11/53] perf test: Fix false TEST_OK result for 'perf test hist' Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> - 2016-01-11 15:30 +0100
Re: [PATCH 11/53] perf test: Fix false TEST_OK result for 'perf test hist' Arnaldo Carvalho de Melo <acme@redhat.com> - 2016-01-11 16:00 +0100
Re: [PATCH 11/53] perf test: Fix false TEST_OK result for 'perf test hist' Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 16:40 +0100
[tip:perf/urgent] perf test: Fix false TEST_OK result for ' perf test hist' tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 15/53] perf tools: Fix symbols searching for offline module in buildid-cache Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 06/53] perf tools: Fix PowerPC native building Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[tip:perf/urgent] perf tools: Fix PowerPC native building tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 23/53] perf tools: Support setting different slots in a BPF map separately Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 02/53] perf tools: Fix phony build target for build-test Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[tip:perf/urgent] perf tools: Fix phony build target for build-test tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 19/53] perf tools: Enable BPF object configure syntax Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 05/53] perf tools: Test correct path of perf in build-test Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 16:30 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 23:10 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 23:40 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 23:50 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-12 08:20 +0100
Re: [PATCH 05/53] perf tools: Test correct path of perf in build-test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 15:10 +0100
[PATCH 20/53] perf record: Apply config to BPF objects before recording Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 14/53] perf test: Check environment before start real BPF test Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 14/53] perf test: Check environment before start real BPF test Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 23:00 +0100
Re: [PATCH 14/53] perf test: Check environment before start real BPF test "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-12 08:50 +0100
[PATCH 26/53] perf data: Support converting data from bpf_perf_event_output() Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 36/53] perf record: Split output into multiple files via '--switch-output' Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 12/53] perf test: Reset err after using it hold errcode in hist testcases Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[tip:perf/urgent] perf test: Reset err after using it hold errcode in hist testcases tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 29/53] perf tools: Make ordered_events reusable Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 29/53] perf tools: Make ordered_events reusable Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 22:40 +0100
[PATCH 04/53] perf tools: Pass O option to Makefile.perf in build-test Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 32/53] perf record: Turns auxtrace_snapshot_enable into 3 states Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 16/53] perf tools: Fix mmap2 event allocation in synthesize code Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
Re: [PATCH 16/53] perf tools: Fix mmap2 event allocation in synthesize code Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 22:10 +0100
[PATCH 16/53 v2] perf tools: Fix mmap2 event allocation in synthesize code Wang Nan <wangnan0@huawei.com> - 2016-01-12 11:20 +0100
RE: [PATCH 16/53 v2] perf tools: Fix mmap2 event allocation in synthesize code 平松雅巳 / HIRAMATU，MASAMI <masami.hiramatsu.pt@hitachi.com> - 2016-01-12 11:50 +0100
Re: [PATCH 16/53 v2] perf tools: Fix mmap2 event allocation in synthesize code "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-12 12:00 +0100
Re: [PATCH 16/53 v2] perf tools: Fix mmap2 event allocation in synthesize code "acme@kernel.org" <acme@kernel.org> - 2016-01-12 15:30 +0100
RE: [PATCH 16/53 v2] perf tools: Fix mmap2 event allocation in synthesize code 平松雅巳 / HIRAMATU，MASAMI <masami.hiramatsu.pt@hitachi.com> - 2016-01-13 01:50 +0100
[tip:perf/urgent] perf tools: Fix mmap2 event allocation in synthesize code tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-13 10:50 +0100
[PATCH 08/53] perf tools: Add missing sources in perf's MANIFEST Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 21/53] perf tools: Enable passing event to BPF object Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:10 +0100
[PATCH 25/53] perf tools: Introduce bpf-output event Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 18/53] perf tools: Add API to config maps in bpf object Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 24/53] perf tools: Enable indices setting syntax for BPF maps Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 22/53] perf tools: Support perf event alias name Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 13/53] perf tools: Prevent calling machine__delete() on non-allocated machine Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
Re: [PATCH 13/53] perf tools: Prevent calling machine__delete() on non-allocated machine Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-11 16:50 +0100
Re: [PATCH 13/53] perf tools: Prevent calling machine__delete() on non-allocated machine "Wangnan (F)" <wangnan0@huawei.com> - 2016-01-12 08:10 +0100
Re: [PATCH 13/53] perf tools: Prevent calling machine__delete() on non-allocated machine Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-12 15:10 +0100
[PATCH 10/53] tools build: Add BPF feature check to test-all Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[tip:perf/urgent] tools build: Add BPF feature check to test-all tip-bot for Wang Nan <tipbot@zytor.com> - 2016-01-12 11:20 +0100
[PATCH 37/53] perf record: Force enable --timestamp-filename when --switch-output is provided Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 03/53] perf tools: Set parallel making options build-test Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:20 +0100
[PATCH 35/53] perf record: Add '--timestamp-filename' option to append timestamp to output filename Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:30 +0100
[PATCH 38/53] perf record: Disable buildid cache options by default in switch output mode Wang Nan <wangnan0@huawei.com> - 2016-01-11 15:30 +0100
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