kernel/linux.git/tools/perf/builtin-timechart.c, branch v7.1

perf tools: Add layout support for --symfs option

2026-03-11T06:13:30+00:00

Add support for parsing an optional layout parameter in the --symfs command line option. The format is: --symfs Where layout can be: - 'hierarchy': matches full path (default) - 'flat': only matches base name When debugging symbol files from a copy of the filesystem (e.g., from a container or remote machine), the debug files are often stored in a flat directory structure with only filenames, not the full original paths. In this case, using 'flat' layout allows perf to find debug symbols by matching only the filename rather than the full path. For example, given a binary path like: /build/output/lib/foo.so With 'perf report --symfs /debug/files,flat', perf will look for: /debug/files/foo.so Instead of: /debug/files/build/output/lib/foo.so This is particularly useful when: - Extracting debug files from containers with different directory layouts - Working with build systems that flatten directory structures Signed-off-by: Changbin Du Signed-off-by: Namhyung Kim

perf timechart: Add record support for output perf.data path

2025-12-03T19:07:23+00:00

The '-o' option exists for the SVG creation but not for `perf timechart record`. Add to better allow testing. Signed-off-by: Ian Rogers Signed-off-by: Namhyung Kim

perf session: Add accessor for session->header.env

2025-07-25T17:37:56+00:00

The perf_env from the header in the session is frequently accessed, add an accessor function rather than access directly. Cache the value to avoid repeated calls. No behavioral change. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250724163302.596743-10-irogers@google.com Signed-off-by: Namhyung Kim

perf timechart: Remove redundant variable assignment

2024-11-13T19:27:35+00:00

This patch makes a minor change that removes a redundant variable assignment. The assignment before the for loop is duplicated by the initialization within the loop header. Signed-off-by: Luo Yifan Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20241111095209.276332-1-luoyifan@cmss.chinamobile.com Signed-off-by: Arnaldo Carvalho de Melo

perf build: Include libtraceevent headers directly indicated by pkg-config

2024-11-09T06:42:57+00:00

Currently the libtraceevent's found by pkg-config, which give the include path as: [root@localhost tmp]# pkg-config --cflags libtraceevent -I/usr/local/include/traceevent So we should include the libtraceevent headers directly without "traceevent/" prefix. Update all the users. Fixes: 0f0e1f445690 ("perf build: Use pkg-config for feature check for libtrace{event,fs}") Suggested-by: Namhyung Kim Link: https://lore.kernel.org/linux-perf-users/ZyF5_Hf1iL01kldE@google.com/ Signed-off-by: Yicong Yang Cc: leo.yan@arm.com Cc: amadio@gentoo.org Cc: linuxarm@huawei.com Link: https://lore.kernel.org/r/20241105105649.45399-1-yangyicong@huawei.com Signed-off-by: Namhyung Kim

perf timechart: Use perf_tool__init()

2024-08-12T21:12:06+00:00

Use perf_tool__init() so that more uses of 'struct perf_tool' can be const and not relying on perf_tool__fill_defaults(). Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Anshuman Khandual Cc: Athira Rajeev Cc: Huacai Chen Cc: Ilkka Koskinen Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Jonathan Cameron Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Nick Desaulniers Cc: Nick Terrell Cc: Oliver Upton Cc: Peter Zijlstra Cc: Song Liu Cc: Sun Haiyong Cc: Suzuki Poulouse Cc: Will Deacon Cc: Yanteng Si Cc: Yicong Yang Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20240812204720.631678-21-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf tool: Constify tool pointers

2024-08-12T21:05:14+00:00

The tool pointer (to a struct largely of function pointers) is passed around but is unchanged except at initialization. Change parameter and variable types to be const to lower the possibilities of what could happen with a tool. Reviewed-by: Adrian Hunter Signed-off-by: Ian Rogers Tested-by: Adrian Hunter Tested-by: Leo Yan Cc: Alexander Shishkin Cc: Anshuman Khandual Cc: Athira Rajeev Cc: Huacai Chen Cc: Ilkka Koskinen Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Jonathan Cameron Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Mike Leach Cc: Namhyung Kim Cc: Nick Desaulniers Cc: Nick Terrell Cc: Oliver Upton Cc: Peter Zijlstra Cc: Song Liu Cc: Sun Haiyong Cc: Suzuki Poulouse Cc: Will Deacon Cc: Yanteng Si Cc: Yicong Yang Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20240812204720.631678-4-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf addr_location: Add init/exit/copy functions

2023-06-12T18:57:53+00:00

struct addr_location holds references to multiple reference counted objects. Add init/exit functions to make maintenance of those more consistent with the rest of the code and to try to avoid leaks. Modification of thread reference counts isn't included in this change. Committer notes: I needed to initialize result to sample->ip to make sure is set to something, fixing a compile time error, mostly keeping the previous logic as build_alloc_func_list() already does debugging/error prints about what went wrong if it takes the 'goto out'. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ali Saidi Cc: Andi Kleen Cc: Athira Rajeev Cc: Brian Robbins Cc: Changbin Du Cc: Dmitrii Dolgov <9erthalion6@gmail.com> Cc: Fangrui Song Cc: German Gomez Cc: Ingo Molnar Cc: Ivan Babrou Cc: James Clark Cc: Jing Zhang Cc: Jiri Olsa Cc: John Garry Cc: K Prateek Nayak Cc: Kan Liang Cc: Leo Yan Cc: Liam Howlett Cc: Mark Rutland Cc: Miguel Ojeda Cc: Mike Leach Cc: Namhyung Kim Cc: Naveen N. Rao Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Sean Christopherson Cc: Steinar H. Gunderson Cc: Suzuki Poulouse Cc: Wenyu Liu Cc: Will Deacon Cc: Yang Jihong Cc: Ye Xingchen Cc: Yuan Can Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230608232823.4027869-7-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo

perf timechart: Make large arrays dynamic

2023-05-28T13:23:42+00:00

Allocate start time and state arrays when command starts rather than using 114,688 bytes in .bss. Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20230526183401.2326121-11-irogers@google.com Cc: K Prateek Nayak Cc: Ravi Bangoria Cc: Mark Rutland Cc: Ross Zwisler Cc: Steven Rostedt (Google) Cc: Sean Christopherson Cc: Yang Jihong Cc: Peter Zijlstra Cc: Adrian Hunter Cc: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Masami Hiramatsu (Google) Cc: Namhyung Kim Cc: Leo Yan Cc: Andi Kleen Cc: Alexander Shishkin Cc: Kan Liang Cc: Tiezhu Yang Cc: Ingo Molnar Cc: Paolo Bonzini Cc: linux-kernel@vger.kernel.org Cc: linux-perf-users@vger.kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf util: Move input_name to util

2023-04-10T22:21:31+00:00

'input_name' is the name of the input perf.data file, it is used by data convert and ui code. Move it to util to make it more consistent with other global state. Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Chengdong Li Cc: Denis Nikitin Cc: Florian Fischer Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: John Garry Cc: Kan Liang Cc: Leo Yan Cc: Mark Rutland Cc: Martin Liška Cc: Mathieu Poirier Cc: Mike Leach Cc: Namhyung Kim Cc: Peter Zijlstra Cc: Raul Silvera Cc: Ravi Bangoria Cc: Rob Herring Cc: Sean Christopherson Cc: Suzuki Poulouse Cc: Will Deacon Cc: Xing Zhengjun Cc: coresight@lists.linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20230410162511.3055900-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo