kernel/tools/perf/arch/arm, branch linux-5.1.y

perf cs-etm: Properly set the value of 'old' and 'head' in snapshot mode

2019-07-26T07:12:32Z

[ Upstream commit e45c48a9a4d20ebc7b639a62c3ef8f4b08007027 ] This patch adds the necessary intelligence to properly compute the value of 'old' and 'head' when operating in snapshot mode. That way we can get the latest information in the AUX buffer and be compatible with the generic AUX ring buffer mechanic. Tester notes: > Leo, have you had the chance to test/review this one? Suzuki? Sure. I applied this patch on the perf/core branch (with latest commit 3e4fbf36c1e3 'perf augmented_raw_syscalls: Move reading filename to the loop') and passed testing with below steps: # perf record -e cs_etm/@tmc_etr0/ -S -m,64 --per-thread ./sort & [1] 19097 Bubble sorting array of 30000 elements # kill -USR2 19097 # kill -USR2 19097 # kill -USR2 19097 [ perf record: Woken up 4 times to write data ] [ perf record: Captured and wrote 0.753 MB perf.data ] Signed-off-by: Mathieu Poirier Tested-by: Leo Yan Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Suzuki Poulouse Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/20190605161633.12245-1-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin

perf tools: Rename build libperf to perf

2019-02-14T18:18:08Z

Rename build libperf to perf, because it's used to build perf. The libperf build object name will be used for libperf library. Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20190213123246.4015-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf coresight: Remove set_drv_config() API

2019-02-06T13:00:39Z

Now that the event's config2 attribute is used to communicate sink selection to the kernel, remove the old set_drv_config() implementation since it is no longer needed. Signed-off-by: Mathieu Poirier Acked-by: Suzuki K Poulouse Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Heiko Carstens Cc: Jiri Olsa Cc: Mark Rutland Cc: Martin Schwidefsky Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: linux-s390@vger.kernel.org Link: http://lkml.kernel.org/r/20190131184714.20388-7-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm cs-etm: Use event attributes to send sink information to kernel

2019-02-06T13:00:39Z

The communication of sink information for a trace session doesn't work when more than on CPU is involved in the scenario due to the static nature of sysfs. As such communicate the sink information to each event by using the perf_event::attr:config2 attribute. The information sent to the kernel is an hash of the sink's name, which is unique in a system. Signed-off-by: Mathieu Poirier Acked-by: Suzuki K Poulouse Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Alexei Starovoitov Cc: Greg Kroah-Hartman Cc: H. Peter Anvin Cc: Heiko Carstens Cc: Jiri Olsa Cc: Mark Rutland Cc: Martin Schwidefsky Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Will Deacon Cc: linux-arm-kernel@lists.infradead.org Cc: linux-s390@vger.kernel.org Link: http://lkml.kernel.org/r/20190131184714.20388-6-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo

perf map: Move structs and prototypes for map groups to a separate header

2019-02-06T13:00:38Z

And since machine.h only needs what is in there, make it stop including map.h and instead include this newly introduced map_groups.h instead. Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-dbob25fv5rp2rjpwlnterf38@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf arm pmu: Add missing linux/string.h header

2019-02-06T13:00:38Z

It uses strstarts(), that is defined in linux/string.h but that was being including by sheer luck, indirectly, fix it. Cc: Adrian Hunter Cc: Dongjiu Geng Cc: Jiri Olsa Cc: Kim Phillips Cc: Mathieu Poirier Cc: Namhyung Kim Cc: Suzuki Poulouse Cc: Will Deacon Link: https://lkml.kernel.org/n/tip-vub5lp82wb7vy5wssfad0xu8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf tests: Add a test for the ARM 32-bit [vectors] page

2019-01-08T16:28:13Z

perf on ARM requires CONFIG_KUSER_HELPERS to be turned on to allow some independance with respect to the ARM CPU being used. Add a test which tries to locate the [vectors] page, created when CONFIG_KUSER_HELPERS is turned on to help asses the system's health. Signed-off-by: Florian Fainelli Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Chris Healy Cc: Greg Kroah-Hartman Cc: Kim Phillips Cc: Lucas Stach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Russell King Cc: Thomas Gleixner Cc: Thomas Richter Link: http://lkml.kernel.org/r/20181221034337.26663-3-f.fainelli@gmail.com Signed-off-by: Arnaldo Carvalho de Melo

perf map: Remove map_type arg from map_groups__find()

2018-04-26T16:47:18Z

One more step in ditching the split. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-4pour7egur07tkrpbynawemv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf map: Shorten map_groups__find() signature

2018-04-26T16:47:12Z

Removing the map_type, that is going away. Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: https://lkml.kernel.org/n/tip-18iiiw25r75xn7zlppjldk48@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

coresight: Move to SPDX identifier

2018-04-19T15:29:41Z

Move CoreSight headers to the SPDX identifier. Signed-off-by: Mathieu Poirier Cc: Alexander Shishkin Cc: Greg Kroah-Hartman Cc: Jiri Olsa Cc: Namhyung Kim Cc: Peter Zijlstra Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1524089118-27595-1-git-send-email-mathieu.poirier@linaro.org Signed-off-by: Arnaldo Carvalho de Melo