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Groups > linux.kernel > #1306271
| From | Wang Nan <wangnan0@huawei.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 26/53] perf data: Support converting data from bpf_perf_event_output() |
| Date | 2016-01-11 15:10 +0100 |
| Message-ID | <qPLkx-3rc-47@gated-at.bofh.it> (permalink) |
| References | <qPL17-34y-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
bpf_perf_event_output() outputs data through sample->raw_data. This
patch adds support to convert those data into CTF. A python script
then can be used to process output data from BPF programs.
Test result:
# cat ./test_bpf_output_2.c
/************************ BEGIN **************************/
#include <uapi/linux/bpf.h>
struct bpf_map_def {
unsigned int type;
unsigned int key_size;
unsigned int value_size;
unsigned int max_entries;
};
#define SEC(NAME) __attribute__((section(NAME), used))
static u64 (*ktime_get_ns)(void) =
(void *)BPF_FUNC_ktime_get_ns;
static int (*trace_printk)(const char *fmt, int fmt_size, ...) =
(void *)BPF_FUNC_trace_printk;
static int (*get_smp_processor_id)(void) =
(void *)BPF_FUNC_get_smp_processor_id;
static int (*perf_event_output)(void *, struct bpf_map_def *, int, void *, unsigned long) =
(void *)BPF_FUNC_perf_event_output;
struct bpf_map_def SEC("maps") channel = {
.type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
.key_size = sizeof(int),
.value_size = sizeof(u32),
.max_entries = __NR_CPUS__,
};
static inline int __attribute__((always_inline))
func(void *ctx, int type)
{
struct {
u64 ktime;
int type;
} __attribute__((packed)) output_data;
char error_data[] = "Error: failed to output\n";
int err;
output_data.type = type;
output_data.ktime = ktime_get_ns();
err = perf_event_output(ctx, &channel, get_smp_processor_id(),
&output_data, sizeof(output_data));
if (err)
trace_printk(error_data, sizeof(error_data));
return 0;
}
SEC("func_begin=sys_nanosleep")
int func_begin(void *ctx) {return func(ctx, 1);}
SEC("func_end=sys_nanosleep%return")
int func_end(void *ctx) { return func(ctx, 2);}
char _license[] SEC("license") = "GPL";
int _version SEC("version") = LINUX_VERSION_CODE;
/************************* END ***************************/
# ./perf record -e evt=bpf-output/no-inherit/ \
-e ./test_bpf_output_2.c/maps:channel.event=evt/ \
usleep 100000
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.012 MB perf.data (2 samples) ]
# ./perf script
usleep 14942 92503.198504: evt=bpf-output/no-inherit/: ffffffff810e0ba1 sys_nanosleep (/lib/modules/4.3.0....
usleep 14942 92503.298562: evt=bpf-output/no-inherit/: ffffffff810585e9 kretprobe_trampoline_holder (/lib....
# ./perf data convert --to-ctf ./out.ctf
[ perf data convert: Converted 'perf.data' into CTF data './out.ctf' ]
[ perf data convert: Converted and wrote 0.000 MB (2 samples) ]
# babeltrace ./out.ctf
[01:41:43.198504134] (+?.?????????) evt=bpf-output/no-inherit/: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF810E0BA1, perf_tid = 14942, perf_pid = 14942, perf_id = 1044, raw_len = 3, raw_data = [ [0] = 0x32C0C07B, [1] = 0x5421, [2] = 0x1 ] }
[01:41:43.298562257] (+0.100058123) evt=bpf-output/no-inherit/: { cpu_id = 0 }, { perf_ip = 0xFFFFFFFF810585E9, perf_tid = 14942, perf_pid = 14942, perf_id = 1044, raw_len = 3, raw_data = [ [0] = 0x38B77FAA, [1] = 0x5421, [2] = 0x2 ] }
# cat ./test_bpf_output_2.py
from babeltrace import TraceCollection
tc = TraceCollection(
tc.add_trace('./out.ctf', 'ctf')
d = {1:[], 2:[]}
for event in tc.events:
if not event.name.startswith('evt=bpf-output/no-inherit/'):
continue
raw_data = event['raw_data']
(time, type) = ((raw_data[0] + (raw_data[1] << 32)), raw_data[2])
d[type].append(time)
print(list(map(lambda i: d[2][i] - d[1][i], range(len(d[1]))))));
# python3 ./test_bpf_output_2.py
[100056879]
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Brendan Gregg <brendan.d.gregg@gmail.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
---
tools/perf/util/data-convert-bt.c | 112 +++++++++++++++++++++++++++++++++++++-
1 file changed, 111 insertions(+), 1 deletion(-)
diff --git a/tools/perf/util/data-convert-bt.c b/tools/perf/util/data-convert-bt.c
index 34cd1e4..62ccf8d 100644
--- a/tools/perf/util/data-convert-bt.c
+++ b/tools/perf/util/data-convert-bt.c
@@ -352,6 +352,84 @@ static int add_tracepoint_values(struct ctf_writer *cw,
return ret;
}
+static int
+add_bpf_output_values(struct bt_ctf_event_class *event_class,
+ struct bt_ctf_event *event,
+ struct perf_sample *sample)
+{
+ struct bt_ctf_field_type *len_type, *seq_type;
+ struct bt_ctf_field *len_field, *seq_field;
+ unsigned int raw_size = sample->raw_size;
+ unsigned int nr_elements = raw_size / sizeof(u32);
+ unsigned int i;
+ int ret;
+
+ if (nr_elements * sizeof(u32) != raw_size)
+ pr_warning("Incorrect raw_size (%u) in bpf output event, skip %lu bytes\n",
+ raw_size, nr_elements * sizeof(u32) - raw_size);
+
+ len_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_len");
+ len_field = bt_ctf_field_create(len_type);
+ if (!len_field) {
+ pr_err("failed to create 'raw_len' for bpf output event\n");
+ ret = -1;
+ goto put_len_type;
+ }
+
+ ret = bt_ctf_field_unsigned_integer_set_value(len_field, nr_elements);
+ if (ret) {
+ pr_err("failed to set field value for raw_len\n");
+ goto put_len_field;
+ }
+ ret = bt_ctf_event_set_payload(event, "raw_len", len_field);
+ if (ret) {
+ pr_err("failed to set payload to raw_len\n");
+ goto put_len_field;
+ }
+
+ seq_type = bt_ctf_event_class_get_field_by_name(event_class, "raw_data");
+ seq_field = bt_ctf_field_create(seq_type);
+ if (!seq_field) {
+ pr_err("failed to create 'raw_data' for bpf output event\n");
+ ret = -1;
+ goto put_seq_type;
+ }
+
+ ret = bt_ctf_field_sequence_set_length(seq_field, len_field);
+ if (ret) {
+ pr_err("failed to set length of 'raw_data'\n");
+ goto put_seq_field;
+ }
+
+ for (i = 0; i < nr_elements; i++) {
+ struct bt_ctf_field *elem_field =
+ bt_ctf_field_sequence_get_field(seq_field, i);
+
+ ret = bt_ctf_field_unsigned_integer_set_value(elem_field,
+ ((u32 *)(sample->raw_data))[i]);
+
+ bt_ctf_field_put(elem_field);
+ if (ret) {
+ pr_err("failed to set raw_data[%d]\n", i);
+ goto put_seq_field;
+ }
+ }
+
+ ret = bt_ctf_event_set_payload(event, "raw_data", seq_field);
+ if (ret)
+ pr_err("failed to set payload for raw_data\n");
+
+put_seq_field:
+ bt_ctf_field_put(seq_field);
+put_seq_type:
+ bt_ctf_field_type_put(seq_type);
+put_len_field:
+ bt_ctf_field_put(len_field);
+put_len_type:
+ bt_ctf_field_type_put(len_type);
+ return ret;
+}
+
static int add_generic_values(struct ctf_writer *cw,
struct bt_ctf_event *event,
struct perf_evsel *evsel,
@@ -597,6 +675,12 @@ static int process_sample_event(struct perf_tool *tool,
return -1;
}
+ if (perf_evsel__is_bpf_output(evsel)) {
+ ret = add_bpf_output_values(event_class, event, sample);
+ if (ret)
+ return -1;
+ }
+
cs = ctf_stream(cw, get_sample_cpu(cw, sample, evsel));
if (cs) {
if (is_flush_needed(cs))
@@ -744,6 +828,25 @@ static int add_tracepoint_types(struct ctf_writer *cw,
return ret;
}
+static int add_bpf_output_types(struct ctf_writer *cw,
+ struct bt_ctf_event_class *class)
+{
+ struct bt_ctf_field_type *len_type = cw->data.u32;
+ struct bt_ctf_field_type *seq_base_type = cw->data.u32_hex;
+ struct bt_ctf_field_type *seq_type;
+ int ret;
+
+ ret = bt_ctf_event_class_add_field(class, len_type, "raw_len");
+ if (ret)
+ return ret;
+
+ seq_type = bt_ctf_field_type_sequence_create(seq_base_type, "raw_len");
+ if (!seq_type)
+ return -1;
+
+ return bt_ctf_event_class_add_field(class, seq_type, "raw_data");
+}
+
static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
struct bt_ctf_event_class *event_class)
{
@@ -755,7 +858,8 @@ static int add_generic_types(struct ctf_writer *cw, struct perf_evsel *evsel,
* ctf event header
* PERF_SAMPLE_READ - TODO
* PERF_SAMPLE_CALLCHAIN - TODO
- * PERF_SAMPLE_RAW - tracepoint fields are handled separately
+ * PERF_SAMPLE_RAW - tracepoint fields and BPF output
+ * are handled separately
* PERF_SAMPLE_BRANCH_STACK - TODO
* PERF_SAMPLE_REGS_USER - TODO
* PERF_SAMPLE_STACK_USER - TODO
@@ -824,6 +928,12 @@ static int add_event(struct ctf_writer *cw, struct perf_evsel *evsel)
goto err;
}
+ if (perf_evsel__is_bpf_output(evsel)) {
+ ret = add_bpf_output_types(cw, event_class);
+ if (ret)
+ goto err;
+ }
+
ret = bt_ctf_stream_class_add_event_class(cw->stream_class, event_class);
if (ret) {
pr("Failed to add event class into stream.\n");
--
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
csiph-web