Use the reader functions to load data file similar to loading of
data directory files.
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 215 --
1 file changed, 66 insertions(+), 149 deletions(-)
diff --git a/tools/perf/util/session.c b/tools
specification masks.
Signed-off-by: Alexey Budankov
---
tools/perf/Documentation/perf-record.txt | 18 ++
tools/perf/builtin-record.c | 43 ++--
2 files changed, 58 insertions(+), 3 deletions(-)
diff --git a/tools/perf/Documentation/perf-record.txt
b/tools/perf
-by: Jiri Olsa
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 350 +-
tools/perf/util/session.h | 4 +
2 files changed, 315 insertions(+), 39 deletions(-)
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 3c2fafb3a04d
25450.21342-1-jo...@kernel.org/
Suggested-by: Jiri Olsa
Suggested-by: Namhyung Kim
Signed-off-by: Alexey Budankov
---
tools/include/linux/bitmap.h | 11 ++
tools/lib/bitmap.c | 14 ++
tools/perf/builtin-record.c | 308 ++-
tools/perf/util/record.h
Print path and name of a data file into raw dump (-D)
@. Print offset of PERF_RECORD_COMPRESSED
record instead of zero for decompressed records:
0x22...@perf.data [0x30]: event: 9
or
0x15c...@perf.data/data.7 [0x30]: event: 9
Acked-by: Namhyung Kim
Signed-off-by: Alexey Budankov
Initialize data files located at mmap buffer objects so trace data
can be written into several data file located at data directory.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 41 ++---
tools/perf/util/record.h| 1 +
2 files changed
Signal thread to terminate by closing write fd of comm.msg pipe.
Receive THREAD_MSG__READY message as the confirmation of the
thread's termination. Stop threads created for parallel trace
streaming prior their stats processing.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c
for the thread to run. Wait and sync on thread start using
thread comm.ack pipe.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 103 +++-
1 file changed, 102 insertions(+), 1 deletion(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin
of the introduced
per mmap file, compressor and stats when they are initialized
and available.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 64 +
tools/perf/util/mmap.c | 6
tools/perf/util/mmap.h | 6
3 files changed, 63
Introduce affinity and mmap thread masks. Thread affinity mask
defines cpus that a thread is allowed to run on. Thread maps
mask defines mmap data buffers the thread serves to stream
profiling data from.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 116
by the main
tool thread.
Signed-off-by: Alexey Budankov
---
tools/lib/api/fd/array.c| 17
tools/lib/api/fd/array.h| 1 +
tools/perf/builtin-record.c | 191 +++-
3 files changed, 206 insertions(+), 3 deletions(-)
diff --git a/tools/lib/api/fd/array.c b
Introduce thread local variable and use it for threaded trace streaming.
Use thread affinity mask instead or record affinity mask in affinity modes.
Introduce and use evlist__ctlfd_update() function to propogate external
control commands to global evlist object.
Signed-off-by: Alexey Budankov
data --call-graph=callee
tools/perf/perf report -i prof.data --stdio --header
tools/perf/perf report -i prof.data -D --header
[1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org
On 27.10.2020 15:10, Jiri Olsa wrote:
> On Mon, Oct 26, 2020 at 08:59:01PM +0300, Alexey Budankov wrote:
>>
>> On 24.10.2020 18:43, Jiri Olsa wrote:
>>> On Wed, Oct 21, 2020 at 06:52:43PM +0300, Alexey Budankov wrote:
>>>>
>>>> Changes in v2:
>
On 27.10.2020 15:21, Jiri Olsa wrote:
> On Tue, Oct 27, 2020 at 10:37:58AM +0300, Alexey Budankov wrote:
>>
>> On 24.10.2020 18:43, Jiri Olsa wrote:
>>> On Wed, Oct 21, 2020 at 07:01:19PM +0300, Alexey Budankov wrote:
>>>>
>>>> Read trace files lo
On 27.10.2020 19:57, Michael Kerrisk (man-pages) wrote:
> Hello Alexey,
>
> On 10/27/20 5:48 PM, Alexey Budankov wrote:
>>
>> Extend perf_event_open 2 man page with the information about
>> CAP_PERFMON capability designed to secure performance monitoring
>
/, posix_1003.1e-990310.pdf
Signed-off-by: Alexey Budankov
---
man2/perf_event_open.2 | 32 ++--
1 file changed, 30 insertions(+), 2 deletions(-)
diff --git a/man2/perf_event_open.2 b/man2/perf_event_open.2
index 4827a359d..9810bc554 100644
--- a/man2/perf_event_open.2
:43, Jiri Olsa wrote:
>>>>> On Wed, Oct 21, 2020 at 07:07:00PM +0300, Alexey Budankov wrote:
>>>>>>
>>>>>> Introduce thread local variable and use it for threaded trace streaming.
>>>>>>
>>>>>> Signed-off-by
On 27.10.2020 15:10, Jiri Olsa wrote:
> On Mon, Oct 26, 2020 at 08:59:01PM +0300, Alexey Budankov wrote:
>>
>> On 24.10.2020 18:43, Jiri Olsa wrote:
>>> On Wed, Oct 21, 2020 at 06:52:43PM +0300, Alexey Budankov wrote:
>>>>
>>>> Changes in v2:
>
On 27.10.2020 15:21, Jiri Olsa wrote:
> On Tue, Oct 27, 2020 at 10:37:58AM +0300, Alexey Budankov wrote:
>>
>> On 24.10.2020 18:43, Jiri Olsa wrote:
>>> On Wed, Oct 21, 2020 at 07:01:19PM +0300, Alexey Budankov wrote:
>>>>
>>>> Read trace files lo
On 27.10.2020 14:59, Jiri Olsa wrote:
> On Mon, Oct 26, 2020 at 08:47:06PM +0300, Alexey Budankov wrote:
>>
>> On 24.10.2020 18:43, Jiri Olsa wrote:
>>> On Wed, Oct 21, 2020 at 06:57:53PM +0300, Alexey Budankov wrote:
>>>>
>>>> Open files loc
On 27.10.2020 15:01, Jiri Olsa wrote:
> On Mon, Oct 26, 2020 at 05:11:30PM +0300, Alexei Budankov wrote:
>> Why do you complain about per thread variable in this case?
>> It looks like ideally fits these specific needs.
>
> I think there's misunderstanding.. I think we should move
> samples to
On 27.10.2020 12:25, Michael Kerrisk (man-pages) wrote:
> Hi Alexei,
>
> Would you be able to refresh this patch and resend please?
Sure. Will do.
Regards,
Alexei
On 24.10.2020 18:43, Jiri Olsa wrote:
> On Wed, Oct 21, 2020 at 07:01:19PM +0300, Alexey Budankov wrote:
>>
>> Read trace files located in data directory into tool process memory.
>> Basic analysis support of data directories is provided for report
>> mode. Raw dump
On 24.10.2020 18:43, Jiri Olsa wrote:
> On Wed, Oct 21, 2020 at 06:52:43PM +0300, Alexey Budankov wrote:
>>
>> Changes in v2:
>> - explicitly added credit tags to patches 6/15 and 15/15,
>> additionally to cites [1], [2]
>> - updated description of 3/15
On 24.10.2020 18:44, Jiri Olsa wrote:
> On Wed, Oct 21, 2020 at 06:59:48PM +0300, Alexey Budankov wrote:
>>
>> Move definition of reader to session header file to be shared
>> among different source files. Introduce reference to active
>> reader object from sessi
On 24.10.2020 18:43, Jiri Olsa wrote:
> On Wed, Oct 21, 2020 at 06:57:53PM +0300, Alexey Budankov wrote:
>>
>> Open files located at trace data directory in case read access
>> mode is requested. File are opened and its fds assigned to
>> perf_data dir files
On 22.10.2020 7:31, Namhyung Kim wrote:
> On Thu, Oct 22, 2020 at 12:58 AM Alexey Budankov
> wrote:
>>
>>
>> Open files located at trace data directory in case read access
>> mode is requested. File are opened and its fds assigned to
>> perf_data d
On 22.10.2020 7:36, Namhyung Kim wrote:
> On Thu, Oct 22, 2020 at 1:00 AM Alexey Budankov
> wrote:
>>
>>
>> Introduce decompressor to trace reader object so that decompression
>> could be executed on per trace file basis separately for every
>> trace file
kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
Suggested-by: Jiri Olsa
Suggested-by: Namhyung Kim
Signed-off-by: Alexey Budankov
---
tools/perf/Documentation/perf-record.txt | 7
tools/pe
trace files located at data directory.
Data buffers and threads are affined to local NUMA nodes and monitored
CPUs according to system topology. --cpu option can be used to specify
CPUs to be monitored.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 128
Close write fd of comm.msg pipe to signal thread to terminate
and receive THREAD_MSG__READY confirmation on termination.
Accumulate thread stats into global stats to be correctly
calculated and displayed in perf tool output.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 64
Introduce evlist__ctlfd_update() to update ctl fd poll status
in evlist pollfd array using other pollfd object.
Signed-off-by: Alexey Budankov
---
tools/perf/util/evlist.c | 16
tools/perf/util/evlist.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/tools/perf/util
Introduce thread local variable and use it for threaded trace streaming.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 71 -
1 file changed, 62 insertions(+), 9 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin
to thread's pollfd object.
Deliver thread control commands to ctlfd_pos fd of thread 1+.
Deliver tool external control commands via ctlfd_pos fd of thread 0.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 101 ++--
1 file changed, 98 insertions(+), 3
Introduce thread local data object and its array to be used for
threaded trace streaming.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 18 ++
1 file changed, 18 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index
Write trace buffer data into per mmap trace files located
at data directory. Streaming thread adjusts its affinity
according to mask of the buffer being processed.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 44 -
tools/perf/util
of the introduced
per mmap file, compressor and stats when they are initialized
and available.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 47 +++--
tools/perf/util/mmap.c | 6 +
tools/perf/util/mmap.h | 5
3 files changed
-b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
Suggested-by: Jiri Olsa
Suggested-by: Namhyung Kim
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 48 +++
tools/perf/util/session.h | 1 +
2
Introduce decompressor to trace reader object so that decompression
could be executed on per trace file basis separately for every
trace file located in trace directory.
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 4 +++-
tools/perf/util/session.h | 1 +
2 files changed, 4
Move definition of reader to session header file to be shared
among different source files. Introduce reference to active
reader object from session object.
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 27 ---
tools/perf/util/session.h | 25
Print path and name of a trace file into raw dump (-D)
@. Print offset of PERF_RECORD_COMPRESSED
record instead of zero for decompressed records:
0x22...@perf.data [0x30]: event: 9
or
0x15c...@perf.data/data.7 [0x30]: event: 9
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-inject.c
Open files located at trace data directory in case read access
mode is requested. File are opened and its fds assigned to
perf_data dir files especially for loading data directories
content in perf report mode.
Signed-off-by: Alexey Budankov
---
tools/perf/util/data.c | 4
1 file changed
Extend reader, ordered_event and decomp objects to contain path
of a trace file being displayed.
Signed-off-by: Alexey Budankov
---
tools/perf/util/ordered-events.h | 1 +
tools/perf/util/session.c| 2 ++
tools/perf/util/session.h| 1 +
3 files changed, 4 insertions(+)
diff
n examples below.
[1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
---
Alexey Budankov (15):
perf session: introduce trace file path to be shown in raw trace dump
p
On 21.10.2020 13:57, Namhyung Kim wrote:
> On Wed, Oct 21, 2020 at 7:25 PM Alexey Budankov
> wrote:
>>
>>
>> On 21.10.2020 9:54, Namhyung Kim wrote:
>>> Hi,
>>>
>>> On Tue, Oct 13, 2020 at 8:30 PM Alexey Budankov
>>> wrote:
>>
On 21.10.2020 10:34, Namhyung Kim wrote:
> On Wed, Oct 14, 2020 at 9:09 PM Alexey Budankov
> wrote:
>>
>> Hi,
>>
>> On 14.10.2020 13:52, Namhyung Kim wrote:
>>> Hi,
>>>
>>> On Mon, Oct 12, 2020 at 6:01 PM Alexey Budankov
>>>
On 21.10.2020 9:54, Namhyung Kim wrote:
> Hi,
>
> On Tue, Oct 13, 2020 at 8:30 PM Alexey Budankov
> wrote:
>> On 12.10.2020 19:49, Alexey Budankov wrote:
>>> On 12.10.2020 19:09, Andi Kleen wrote:
>>>> On Mon, Oct 12, 2020 at 11:58:58AM +0300, Alexey B
On 20.10.2020 19:31, Alexey Budankov wrote:
>
> On 12.10.2020 20:06, Alexey Budankov wrote:
>>
>> On 12.10.2020 19:01, Andi Kleen wrote:
>>> On Mon, Oct 12, 2020 at 11:54:24AM +0300, Alexey Budankov wrote:
>>>> @@ -180,7 +183,8 @@ static i
On 12.10.2020 20:06, Alexey Budankov wrote:
>
> On 12.10.2020 19:01, Andi Kleen wrote:
>> On Mon, Oct 12, 2020 at 11:54:24AM +0300, Alexey Budankov wrote:
>>> @@ -180,7 +183,8 @@ static int ordered_events__deliver_event(struct
&
Document steps to create CAP_PERFMON privileged shell to unblock
Perf tool usage in cases when capabilities can't be assigned to
an executable due to limitations of used file system.
Suggested-by: Andi Kleen
Signed-off-by: Alexey Budankov
---
Documentation/admin-guide/perf-security.rst | 68
Add note that starting from Linux v5.9 CAP_PERFMON Linux capability
is enough to conduct performance monitoring and observability using
perf_events API.
Signed-off-by: Alexey Budankov
---
Documentation/admin-guide/perf-security.rst | 13 -
1 file changed, 8 insertions(+), 5
/man7/capabilities.7.html
[2] https://man7.org/linux/man-pages/man7/xattr.7.html
[3] https://man7.org/linux/man-pages/man8/mount.8.html
[4]
https://www.kernel.org/doc/html/latest/admin-guide/perf-security.html#privileged-perf-users-groups
---
Alexey Budankov (2):
doc/admin-guide: note
On 14.10.2020 20:27, Ingo Molnar wrote:
>
> * Alexey Budankov wrote:
>
>>
>> Patch set provides threaded trace streaming for base perf record
>> operation. Provided streaming mode (--threads) mitigates profiling
>> data losses and resolves scalability
On 13.10.2020 19:20, Arnaldo Carvalho de Melo wrote:
> Em Mon, Oct 12, 2020 at 11:50:29AM +0300, Alexey Budankov escreveu:
>>
>> Patch set provides threaded trace streaming for base perf record
>> operation. Provided streaming mode (--threads) mitigates profiling
>&g
Hi,
On 14.10.2020 13:52, Namhyung Kim wrote:
> Hi,
>
> On Mon, Oct 12, 2020 at 6:01 PM Alexey Budankov
> wrote:
>>
>>
>> Write trace data into per mmap trace files located
>> at data directory. Streaming thread adjusts its affinity
>> accor
On 13.10.2020 19:22, Arnaldo Carvalho de Melo wrote:
> Em Mon, Oct 12, 2020 at 07:52:33PM +0300, Alexey Budankov escreveu:
>>
>> On 12.10.2020 19:03, Andi Kleen wrote:
>>> On Mon, Oct 12, 2020 at 11:55:07AM +0300, Alexey Budankov wrote:
>>>>
>>>&
Hi,
On 13.10.2020 22:54, Jiri Olsa wrote:
> On Mon, Oct 12, 2020 at 11:54:24AM +0300, Alexey Budankov wrote:
>>
>> Output path of a trace file into raw dump (-D) @.
>> Print offset of PERF_RECORD_COMPRESSED record instead of zero for
>> decompressed records:
>>
On 12.10.2020 19:49, Alexey Budankov wrote:
>
> On 12.10.2020 19:09, Andi Kleen wrote:
>> On Mon, Oct 12, 2020 at 11:58:58AM +0300, Alexey Budankov wrote:
>>>
>>> Read trace files located at data directory into tool process memory.
>>> Basic analysis
On 12.10.2020 19:01, Andi Kleen wrote:
> On Mon, Oct 12, 2020 at 11:54:24AM +0300, Alexey Budankov wrote:
>> @@ -180,7 +183,8 @@ static int ordered_events__deliver_event(struct
>> ordered_events *oe,
>> ordered_events)
On 12.10.2020 19:03, Andi Kleen wrote:
> On Mon, Oct 12, 2020 at 11:55:07AM +0300, Alexey Budankov wrote:
>>
>> Open files located at data directory in case of read access mode.
>
> Need some rationale. Is this a bug fix? Did the case not matter
> before?
This is not a
On 12.10.2020 19:05, Andi Kleen wrote:
> On Mon, Oct 12, 2020 at 11:57:00AM +0300, Alexey Budankov wrote:
>> diff --git a/tools/perf/util/session.h b/tools/perf/util/session.h
>> index abdb8518a81f..4fc9ccdf7970 100644
>> --- a/tools/perf/util/session.h
>> +++
On 12.10.2020 19:09, Andi Kleen wrote:
> On Mon, Oct 12, 2020 at 11:58:58AM +0300, Alexey Budankov wrote:
>>
>> Read trace files located at data directory into tool process memory.
>> Basic analysis support of data directories is provided for report
>> mode. Raw dump
exclusive to the exposed threaded streaming mode.
[1] git clone https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git -b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
Signed-off-by: Alexey Budankov
---
tools/perf/Documentation/perf-record.txt | 7 +
trace files located at data directory.
Data buffers and threads are affined to local NUMA nodes and monitored
CPUs according to system topology. --cpu option can be used to specify
exact CPUs to be monitored.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 128
Close write fd of comm.msg pipe to signal thread to terminate
and receive THREAD_MSG__READY confirmation on termination.
Accumulate thread stats into global stats to be correctly
calculated and displayed in perf tool output.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 64
Introduce thread local variable and use it for threaded trace streaming.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 71 -
1 file changed, 62 insertions(+), 9 deletions(-)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin
Introduce evlist__ctlfd_update() to update ctl fd poll status
in evlist pollfd array using other pollfd object.
Signed-off-by: Alexey Budankov
---
tools/perf/util/evlist.c | 16
tools/perf/util/evlist.h | 1 +
2 files changed, 17 insertions(+)
diff --git a/tools/perf/util
to thread's pollfd object.
Deliver thread control commands to ctlfd_pos fd of thread 1+.
Deliver tool external control commands via ctlfd_pos fd of thread 0.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 101 ++--
1 file changed, 98 insertions(+), 3
Introduce thread local data object and its array to be used for
threaded trace streaming.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 18 ++
1 file changed, 18 insertions(+)
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index
Write trace data into per mmap trace files located
at data directory. Streaming thread adjusts its affinity
according to mask of the buffer being processed.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 44 -
tools/perf/util/record.h
of the introduced
per mmap file, compressor and stats when they are initialized
and available.
Signed-off-by: Alexey Budankov
---
tools/perf/builtin-record.c | 47 +++--
tools/perf/util/mmap.c | 6 +
tools/perf/util/mmap.h | 5
3 files changed
-b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 48 +++
tools/perf/util/session.h | 1 +
2 files changed, 49 insertions(+)
diff --git a/tools
Introduce decompressor to trace reader object so that decompression
could be executed on per trace file basis separately for every
trace file located at data directory.
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 4 +++-
tools/perf/util/session.h | 1 +
2 files changed, 4
Move definition of reader to session header file to be shared
among different source files. Introduce reference to active
reader object from session object.
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 27 ---
tools/perf/util/session.h | 25
Open files located at data directory in case of read access mode.
Signed-off-by: Alexey Budankov
---
tools/perf/util/data.c | 4
1 file changed, 4 insertions(+)
diff --git a/tools/perf/util/data.c b/tools/perf/util/data.c
index c47aa34fdc0a..6ad61ac6ba67 100644
--- a/tools/perf/util
Output path of a trace file into raw dump (-D) @.
Print offset of PERF_RECORD_COMPRESSED record instead of zero for
decompressed records:
0x22...@perf.data [0x30]: event: 9
or
0x15c...@perf.data/data.7 [0x30]: event: 9
Signed-off-by: Alexey Budankov
---
tools/perf/util/session.c | 75
Extend reader, ordered_event and decomp objects to contain path
of a trace file being displayed.
Signed-off-by: Alexey Budankov
---
tools/perf/util/ordered-events.h | 1 +
tools/perf/util/session.c| 2 ++
tools/perf/util/session.h| 1 +
3 files changed, 4 insertions(+)
diff
t -b
perf/record_threads
[2] https://lore.kernel.org/lkml/20180913125450.21342-1-jo...@kernel.org/
---
Alexey Budankov (15):
perf session: introduce trace file path to be shown in raw trace dump
perf report: output trace file name in raw trace dump
perf data: open data directory in read a
On 21.09.2020 20:33, Alexander Duyck wrote:
> On Mon, Sep 21, 2020 at 9:07 AM Alexey Budankov
> wrote:
>>
>>
>> On 21.09.2020 16:36, Alexander Duyck wrote:
>>> On Sat, Sep 19, 2020 at 1:01 AM Alexey Budankov
>>> wrote:
>>>>
>>>>
Hi,
Thanks for the patches.
On 11.09.2020 22:45, David E. Box wrote:
> From: Alexander Duyck
>
> Add support for the Intel Platform Monitoring Technology crashlog
> interface. This interface provides a few sysfs values to allow for
> controlling the crashlog telemetry interface as well as a
w I need an entry to 'perf test' to make sure that
> /tmp/build/perf/feature/test-all.make.output is empty...
>
> Fixes: 3b1c5d9659718263 ("tools build: Implement libzstd feature check,
> LIBZSTD_DIR and NO_LIBZSTD defines")
> Cc: Adrian Hunter
> Cc: Alexey Buda
On 02.09.2020 13:57, Adrian Hunter wrote:
> Enable the --control option to accept file names as an alternative to
> file descriptors.
>
> Example:
>
> $ mkfifo perf.control
> $ mkfifo perf.ack
> $ cat perf.ack &
> [1] 6808
> $ perf record --control fifo:perf.control,perf.ack -- sleep 300
On 01.09.2020 12:37, Adrian Hunter wrote:
> Add 'snapshot' control command to create an AUX area tracing snapshot the
> same as if sending SIGUSR2. The advantage of the FIFO is that access is
> governed by access to the FIFO.
>
> Example:
>
> $ mkfifo perf.control
> $ mkfifo perf.ack
> $
On 01.09.2020 12:37, Adrian Hunter wrote:
> The documentation descibes snapshot mode. Update it to include the new
> snapshot control command.
>
> Signed-off-by: Adrian Hunter
> ---
> tools/perf/Documentation/perf-intel-pt.txt | 23 +++---
> 1 file changed, 20 insertions(+),
On 01.09.2020 12:37, Adrian Hunter wrote:
> The --control option does not display well in man pages unless AsciiDoc
> formatting is used.
>
> Signed-off-by: Adrian Hunter
> ---
> tools/perf/Documentation/perf-record.txt | 46
> tools/perf/Documentation/perf-stat.txt
On 01.09.2020 12:37, Adrian Hunter wrote:
> Handle read errors from ctl_fd such as EINTR, EAGAIN and EWOULDBLOCK.
>
> Signed-off-by: Adrian Hunter
> ---
> tools/perf/util/evlist.c | 16 +++-
> 1 file changed, 11 insertions(+), 5 deletions(-)
Acked-by: Alexei Budankov
Regards,
On 01.09.2020 12:37, Adrian Hunter wrote:
> Consolidate --control option parsing into one function, in preparation for
> adding FIFO file name options.
>
> Signed-off-by: Adrian Hunter
> ---
> tools/perf/builtin-record.c | 22 ++
> tools/perf/builtin-stat.c | 22
Hi Michael,
On 23.08.2020 20:28, Michael Kerrisk (man-pages) wrote:
> Hello Alexey,
>
> Could you look at the question below and update the patch.
>
> On 2/17/20 9:18 AM, Alexey Budankov wrote:
>>
>> Extend perf_event_open 2 man page with the information about
>>
On 10.08.2020 23:36, Peter Zijlstra wrote:
> On Mon, Aug 10, 2020 at 07:45:18AM -0700, Andi Kleen wrote:
>
>> Unfortunately we're kind of stuck with the old NFILE=1024 default
>> even though it makes little sense on modern servers.
>
> Why can't that be changed? It seems to me all of userspace
The following commit has been merged into the perf/urgent branch of tip:
Commit-ID: 45fd22da97c6125d8d0d35bd1791e7c0c4175279
Gitweb:
https://git.kernel.org/tip/45fd22da97c6125d8d0d35bd1791e7c0c4175279
Author:Alexey Budankov
AuthorDate:Wed, 05 Aug 2020 10:56:56 +03:00
/7776fa40-6c65-2aa6-1322-eb3a01201...@linux.intel.com/
Signed-off-by: Alexey Budankov
---
kernel/events/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 856d98c36f56..f50d528af444 100644
--- a/kernel/events/core.c
+++ b
/
Signed-off-by: Alexey Budankov
---
tools/perf/util/evsel.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 9aa51a65593d..e241ee773ccb 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -2500,8
On 31.07.2020 0:39, Jiri Olsa wrote:
> Adding new CLOCK_DATA feature that stores reference times
> when -k/--clockid option is specified.
>
> It contains clock id and its reference time together with
> wall clock time taken at the 'same time', both values are
> in nanoseconds.
>
> The format
On 22.07.2020 15:56, Arnaldo Carvalho de Melo wrote:
> Em Fri, Jul 17, 2020 at 10:05:06AM +0300, Alexey Budankov escreveu:
>>
>> Implement handling of 'enable' and 'disable' control commands coming
>> from control file descriptor. If poll event splits initiate
On 22.07.2020 15:34, Arnaldo Carvalho de Melo wrote:
> Em Wed, Jul 22, 2020 at 09:27:34AM -0300, Arnaldo Carvalho de Melo escreveu:
>> Em Fri, Jul 17, 2020 at 10:01:33AM +0300, Alexey Budankov escreveu:
>>>
>>> Implement functions of initialization, finalization an
On 13.07.2020 21:51, Arnaldo Carvalho de Melo wrote:
> Em Mon, Jul 13, 2020 at 03:37:51PM +0300, Alexey Budankov escreveu:
>>
>> On 13.07.2020 15:17, Arnaldo Carvalho de Melo wrote:
>>> Em Mon, Jul 13, 2020 at 12:48:25PM +0300, Alexey Budankov escreveu:
>>>&g
shell script.
Signed-off-by: Alexey Budankov
Acked-by: Jiri Olsa
Acked-by: Namhyung Kim
---
tools/perf/Documentation/perf-record.txt | 39
tools/perf/builtin-record.c | 37 ++
tools/perf/util/record.h | 2 ++
3 files
Implement handling of 'enable' and 'disable' control commands
coming from control file descriptor.
Signed-off-by: Alexey Budankov
Acked-by: Jiri Olsa
Acked-by: Namhyung Kim
---
tools/perf/builtin-record.c | 16
1 file changed, 16 insertions(+)
diff --git a/tools/perf
Extend -D,--delay option with -1 to start collection with events
disabled to be enabled later by 'enable' command provided via
control file descriptor.
Signed-off-by: Alexey Budankov
Acked-by: Jiri Olsa
Acked-by: Namhyung Kim
---
tools/perf/Documentation/perf-record.txt | 5 +++--
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