Changes in session.h

7ae1972e - perf report: Add parallelism sort key

Thu, 13 Feb 2025 09:08:15 +0000

perf report: Add parallelism sort keyShow parallelism level in profiles if requested by user.Signed-off-by: Dmitry Vyukov Reviewed-by: Andi Kleen Link: https://lore.kernel.org/r/7f7bb87cbaa51bf1fb008a0d68b687423ce4bad4.1739437531.git.dvyukov@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/util/session.h

89d64e72 - perf inject: Overhaul handling of pipe files

Thu, 29 Aug 2024 15:01:52 +0000

perf inject: Overhaul handling of pipe filesPreviously inject->is_pipe was set if the input or output were apipe. Determining the input was a pipe had to be done prior tostarting the session and opening the file. This was done by comparingthe input file name with '-' but it fails if the pipe file is writtento disk.Opening a pipe file from disk will correctly set perf_data.is_pipe, butthis is too late for 'perf inject' and results in a broken file. Aworkaround is 'cat pipe_perf|perf inject -i - ...'.This change removes inject->is_pipe and changes the dependentconditions to use the is_pipe flag on the input(inject->session->data) and output files (inject->output). Thisensures the is_pipe condition reflects things like the header beingread.The change removes the use of perf file header repiping, that iswriting the file header out while reading it in. The case of inputpipe and output file cannot repipe as the attributes for the file areunknown. To resolve this, write the file header when writing to diskand as the attributes may be unknown, write them after the data.Update sessions repipe variable to be trace_event_repipe as those arethe only events now impacted by it. Update __perf_session__new as therepipe_fd no longer needs passing. Fully removing repipe from sessionheader reading will be done in a later change.Committer testing: root@number:~# perf record -e syscalls:sys_enter_*sleep/max-stack=4/ -o - sleep 0.01 | perf report -i - # To display the perf.data header info, please use --header/--header-only options. # [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.050 MB - ] # # Total Lost Samples: 0 # # Samples: 1 of event 'syscalls:sys_enter_clock_nanosleep' # Event count (approx.): 1 # # Overhead Command Shared Object Symbol # ........ ....... ............. ............................... # 100.00% sleep libc.so.6 [.] clock_nanosleep@GLIBC_2.2.5 | ---__libc_start_main@@GLIBC_2.34 __libc_start_call_main 0x562fc2560a9f clock_nanosleep@GLIBC_2.2.5 # # (Tip: Create an archive with symtabs to analyse on other machine: perf archive) # root@number:~# perf record -e syscalls:sys_enter_*sleep/max-stack=4/ -o - sleep 0.01 > pipe.data [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.050 MB - ] root@number:~# perf report --stdio -i pipe.data # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 1 of event 'syscalls:sys_enter_clock_nanosleep' # Event count (approx.): 1 # # Overhead Command Shared Object Symbol # ........ ....... ............. ............................... # 100.00% sleep libc.so.6 [.] clock_nanosleep@GLIBC_2.2.5 | ---__libc_start_main@@GLIBC_2.34 __libc_start_call_main 0x55f775975a9f clock_nanosleep@GLIBC_2.2.5 # # (Tip: To set sampling period of individual events use perf record -e cpu/cpu-cycles,period=100001/,cpu/branches,period=10001/ ...) # root@number:~#Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Nick Terrell Cc: Peter Zijlstra Cc: Yanteng Si Cc: Yicong Yang Link: https://lore.kernel.org/r/20240829150154.37929-7-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

d9c99310 - perf session: Document 'struct perf_session' and constify its 'auxtrace' member

Thu, 29 Aug 2024 15:01:48 +0000

perf session: Document 'struct perf_session' and constify its 'auxtrace' memberperf_session is a central data structure to the tool so let's commentit. The auxtrace callbacks are never modified in session so constify.Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Nick Terrell Cc: Peter Zijlstra Cc: Yanteng Si Cc: Yicong Yang Link: https://lore.kernel.org/r/20240829150154.37929-3-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

8f29be32 - perf session: Constify tool

Mon, 12 Aug 2024 20:47:19 +0000

perf session: Constify toolMake tool const now that all uses are const andperf_tool__fill_defaults() won't be used. The aim is to better capturethat sessions don't mutate tools.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.orgLink: https://lore.kernel.org/r/20240812204720.631678-28-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

564e5cbc - perf tool: Move fill defaults into tool.c

Mon, 12 Aug 2024 20:46:56 +0000

perf tool: Move fill defaults into tool.cThe aim here is to eventually make perf_tool__fill_defaults() an initfunction so that the tools struct is more const.Create a tool.c to go along with tool.h. Move perf_tool__fill_defaults()out of session.c into tool.c along with the default stub values. Addperf_tool__compressed_is_stub() for a test inperf_session__process_user_event().perf_session__process_compressed_event() is only used from being defaultinitialized so migrate into tool.c.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.orgLink: https://lore.kernel.org/r/20240812204720.631678-5-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

30f29bae - perf tool: Constify tool pointers

Mon, 12 Aug 2024 20:46:55 +0000

perf tool: Constify tool pointersThe tool pointer (to a struct largely of function pointers) is passedaround but is unchanged except at initialization. Change parameter andvariable types to be const to lower the possibilities of what couldhappen 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.orgLink: https://lore.kernel.org/r/20240812204720.631678-4-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

4e322c78 - perf auxtrace: Remove dummy tools

Mon, 12 Aug 2024 20:46:53 +0000

perf auxtrace: Remove dummy toolsAdd perf_session__deliver_synth_attr_event that synthesizes aperf_record_header_attr event with one id. Remove use ofperf_event__synthesize_attr that necessitates the use of the dummytool in order to pass the session.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.orgLink: https://lore.kernel.org/r/20240812204720.631678-2-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

411ee135 - perf hist: Add symbol_conf.skip_empty

Fri, 07 Jun 2024 20:29:17 +0000

perf hist: Add symbol_conf.skip_emptyAdd the skip_empty flag to symbol_conf and set the value from the reportcommand to preserve the existing behavior. This makes the code simplerand will be needed other code which is hard to add a new argument.Tested-by: Arnaldo Carvalho de Melo Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240607202918.2357459-4-namhyung@kernel.org List of files: /linux-6.15/tools/perf/util/session.h

83acca9f - perf dsos: Attempt to better abstract DSOs internals

Wed, 10 Apr 2024 06:42:03 +0000

perf dsos: Attempt to better abstract DSOs internalsMove functions from machine and build-id to dsos. Pass 'struct dsos'rather than internal state.Rename some functions to better represent which data structure theyoperate on.Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Andi Kleen Cc: Anne Macedo Cc: Athira Rajeev Cc: Ben Gainey Cc: Changbin Du Cc: Chengen Du Cc: Colin Ian King Cc: Ilkka Koskinen Cc: Ingo Molnar Cc: James Clark Cc: Jiri Olsa Cc: K Prateek Nayak Cc: Kan Liang Cc: Leo Yan Cc: Li Dong Cc: Mark Rutland Cc: Markus Elfring Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Paran Lee Cc: Peter Zijlstra Cc: Ravi Bangoria Cc: Song Liu Cc: Sun Haiyong Cc: Thomas Richter Cc: Yang Jihong Cc: Yanteng Si Cc: Yicong Yang Cc: zhaimingbing Link: https://lore.kernel.org/r/20240410064214.2755936-2-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

0bdfbd04 - perf tools: Make it possible to see perf's kernel and module memory mappings

Thu, 08 Feb 2024 08:53:25 +0000

perf tools: Make it possible to see perf's kernel and module memory mappingsDump kmaps if using 'perf --debug kmaps' or verbose > 2 (e.g. -vvv) fortools 'perf script' and 'perf report' if there is no browser.Example: $ perf --debug kmaps script 2>&1 >/dev/null | grep kvm.intel build id event received for /lib/modules/6.7.2-local/kernel/arch/x86/kvm/kvm-intel.ko: 0691d75e10e72ebbbd45a44c59f6d00a5604badf [20] Map: 0-3a3 4f5d8 [kvm_intel].modinfo Map: 0-5240 5f280 [kvm_intel]__versions Map: 0-30 64 [kvm_intel].note.Linux Map: 0-14 644c0 [kvm_intel].orc_header Map: 0-5297 43680 [kvm_intel].rodata Map: 0-5bee 3b837 [kvm_intel].text.unlikely Map: 0-7e0 41430 [kvm_intel].noinstr.text Map: 0-2080 713c0 [kvm_intel].bss Map: 0-26 705c8 [kvm_intel].data..read_mostly Map: 0-5888 6a4c0 [kvm_intel].data Map: 0-22 70220 [kvm_intel].data.once Map: 0-40 705f0 [kvm_intel].data..percpu Map: 0-1685 41d20 [kvm_intel].init.text Map: 0-4b8 6fd60 [kvm_intel].init.data Map: 0-380 70248 [kvm_intel]__dyndbg Map: 0-8 70218 [kvm_intel].exit.data Map: 0-438 4f980 [kvm_intel]__param Map: 0-5f5 4ca0f [kvm_intel].rodata.str1.1 Map: 0-3657 493b8 [kvm_intel].rodata.str1.8 Map: 0-e0 70640 [kvm_intel].data..ro_after_init Map: 0-500 70ec0 [kvm_intel].gnu.linkonce.this_module Map: ffffffffc13a7000-ffffffffc1421000 a0 /lib/modules/6.7.2-local/kernel/arch/x86/kvm/kvm-intel.koThe example above shows how the module section mappings are all wrongexcept for the main .text mapping at 0xffffffffc13a7000.Signed-off-by: Adrian Hunter Acked-by: Namhyung Kim Cc: Like Xu Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240208085326.13432-2-adrian.hunter@intel.com List of files: /linux-6.15/tools/perf/util/session.h

378ef0f5 - perf build: Use libtraceevent from the system

Mon, 05 Dec 2022 22:59:39 +0000

perf build: Use libtraceevent from the systemRemove the LIBTRACEEVENT_DYNAMIC and LIBTRACEFS_DYNAMIC make commandline variables.If libtraceevent isn't installed or NO_LIBTRACEEVENT=1 is passed to thebuild, don't compile in libtraceevent and libtracefs support.This also disables CONFIG_TRACE that controls "perf trace".CONFIG_LIBTRACEEVENT is used to control enablement in Build/Makefiles,HAVE_LIBTRACEEVENT is used in C code.Without HAVE_LIBTRACEEVENT tracepoints are disabled and as such thecommands kmem, kwork, lock, sched and timechart are removed. Themajority of commands continue to work including "perf test".Committer notes:Fixed up a tools/perf/util/Build reject and added: #include to tools/perf/util/scripting-engines/trace-event-perl.c.Committer testing: $ rpm -qi libtraceevent-devel Name : libtraceevent-devel Version : 1.5.3 Release : 2.fc36 Architecture: x86_64 Install Date: Mon 25 Jul 2022 03:20:19 PM -03 Group : Unspecified Size : 27728 License : LGPLv2+ and GPLv2+ Signature : RSA/SHA256, Fri 15 Apr 2022 02:11:58 PM -03, Key ID 999f7cbf38ab71f4 Source RPM : libtraceevent-1.5.3-2.fc36.src.rpm Build Date : Fri 15 Apr 2022 10:57:01 AM -03 Build Host : buildvm-x86-05.iad2.fedoraproject.org Packager : Fedora Project Vendor : Fedora Project URL : https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ Bug URL : https://bugz.fedoraproject.org/libtraceevent Summary : Development headers of libtraceevent Description : Development headers of libtraceevent-libs $Default build: $ ldd ~/bin/perf | grep tracee libtraceevent.so.1 => /lib64/libtraceevent.so.1 (0x00007f1dcaf8f000) $ # perf trace -e sched:* --max-events 10 0.000 migration/0/17 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, dest_cpu: 1) 0.005 migration/0/17 sched:sched_wake_idle_without_ipi(cpu: 1) 0.011 migration/0/17 sched:sched_switch(prev_comm: "", prev_pid: 17 (migration/0), prev_state: 1, next_comm: "", next_prio: 120) 1.173 :0/0 sched:sched_wakeup(comm: "", pid: 3138 (gnome-terminal-), prio: 120) 1.180 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 3138 (gnome-terminal-), next_prio: 120) 0.156 migration/1/21 sched:sched_migrate_task(comm: "", pid: 1603763 (perf), prio: 120, orig_cpu: 1, dest_cpu: 2) 0.160 migration/1/21 sched:sched_wake_idle_without_ipi(cpu: 2) 0.166 migration/1/21 sched:sched_switch(prev_comm: "", prev_pid: 21 (migration/1), prev_state: 1, next_comm: "", next_prio: 120) 1.183 :0/0 sched:sched_wakeup(comm: "", pid: 1602985 (kworker/u16:0-f), prio: 120, target_cpu: 1) 1.186 :0/0 sched:sched_switch(prev_comm: "", prev_prio: 120, next_comm: "", next_pid: 1602985 (kworker/u16:0-f), next_prio: 120) #Had to tweak tools/perf/util/setup.py to make sure the python bindingshared object links with libtraceevent if -DHAVE_LIBTRACEEVENT ispresent in CFLAGS.Building with NO_LIBTRACEEVENT=1 uncovered some more build failures:- Make building of data-convert-bt.c to CONFIG_LIBTRACEEVENT=y- perf-$(CONFIG_LIBTRACEEVENT) += scripts/- bpf_kwork.o needs also to be dependent on CONFIG_LIBTRACEEVENT=y- The python binding needed some fixups and util/trace-event.c can't be built and linked with the python binding shared object, so remove it in tools/perf/util/setup.py and exclude it from the list of dependencies in the python/perf.so Makefile.perf target.Building without libtraceevent-devel installed uncovered more buildfailures:- The python binding tools/perf/util/python.c was assuming that traceevent/parse-events.h was always available, which was the case when we defaulted to using the in-kernel tools/lib/traceevent/ files, now we need to enclose it under ifdef HAVE_LIBTRACEEVENT, just like the other parts of it that deal with tracepoints.- We have to ifdef the rules in the Build files with CONFIG_LIBTRACEEVENT=y to build builtin-trace.c and tools/perf/trace/beauty/ as we only ifdef setting CONFIG_TRACE=y when setting NO_LIBTRACEEVENT=1 in the make command line, not when we don't detect libtraceevent-devel installed in the system. Simplification here to avoid these two ways of disabling builtin-trace.c and not having CONFIG_TRACE=y when libtraceevent-devel isn't installed is the clean way.From Athira:tools/perf/arch/powerpc/util/Build-perf-y += kvm-stat.o+perf-$(CONFIG_LIBTRACEEVENT) += kvm-stat.oThen, ditto for arm64 and s390, detected by container cross build tests.- s/390 uses test__checkevent_tracepoint() that is now only available if HAVE_LIBTRACEEVENT is defined, enclose the callsite with ifder HAVE_LIBTRACEEVENT.Also from Athira:With this change, I could successfully compile in these environment:- Without libtraceevent-devel installed- With libtraceevent-devel installed- With “make NO_LIBTRACEEVENT=1”Then, finally rename CONFIG_TRACEEVENT to CONFIG_LIBTRACEEVENT forconsistency with other libraries detected in tools/perf/.Signed-off-by: Ian Rogers Tested-by: Arnaldo Carvalho de Melo Tested-by: Athira Rajeev Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Nick Desaulniers Cc: Peter Zijlstra Cc: Stephane Eranian Cc: bpf@vger.kernel.orgLink: http://lore.kernel.org/lkml/20221205225940.3079667-3-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

eddc6e3f - perf tools: Export perf_event__process_finished_round()

Mon, 11 Jul 2022 09:31:47 +0000

perf tools: Export perf_event__process_finished_round()Export perf_event__process_finished_round() so it can be used elsewhere.This is needed in perf inject to obey finished-round ordering.Signed-off-by: Adrian Hunter Acked-by: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Cc: kvm@vger.kernel.orgLink: https://lore.kernel.org/r/20220711093218.10967-5-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

2292083f - perf report: Output data file name in raw trace dump

Mon, 17 Jan 2022 18:34:36 +0000

perf report: Output data file name in raw trace dumpPrint path and name of a data file into raw dump (-D)@: 0x2226a@perf.data [0x30]: event: 9or 0x15cc36@perf.data/data.7 [0x30]: event: 9Reviewed-by: Riccardo Mancini Signed-off-by: Alexey Bayduraev Tested-by: Jiri Olsa Tested-by: Riccardo Mancini Acked-by: Andi Kleen Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Antonov Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Ingo Molnar Cc: Peter Zijlstra Link: https://lore.kernel.org/r/e8378fd4910c10751b001be880705653989283c2.1642440724.git.alexey.v.bayduraev@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

3a3535e6 - perf session: Introduce decompressor in reader object

Wed, 13 Oct 2021 09:06:36 +0000

perf session: Introduce decompressor in reader objectIntroduce a decompressor data structure with pointers to decompobjects and to zstd object.We cannot just move session->zstd_data to decomp_data assession->zstd_data is not only used for decompression.Adding decompressor data object to reader object and introducingactive_decomp into perf_session object to select current decompressor.Thus decompression could be executed separately for each data file.Reviewed-by: Jiri Olsa Reviewed-by: Riccardo Mancini Signed-off-by: Alexey Bayduraev Tested-by: Riccardo Mancini Acked-by: Namhyung Kim Cc: Adrian Hunter Cc: Alexander Antonov Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Andi Kleen Cc: Ingo Molnar Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/0eee270cb52aebcbd029c8445d9009fd17709d53.1634113027.git.alexey.v.bayduraev@linux.intel.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

0ae03893 - perf tools: Pass a fd to perf_file_header__read_pipe()

Mon, 19 Jul 2021 22:31:50 +0000

perf tools: Pass a fd to perf_file_header__read_pipe()Currently it unconditionally writes to stdout for repipe. But perfinject can direct its output to a regular file. Then it needs towrite the header to the file as well.Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: Ian Rogers Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210719223153.1618812-3-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

2681bd85 - perf tools: Remove repipe argument from perf_session__new()

Mon, 19 Jul 2021 22:31:49 +0000

perf tools: Remove repipe argument from perf_session__new()The repipe argument is only used by perf inject and the all otherspasses 'false'. Let's remove it from the function signature and add__perf_session__new() to be called from perf inject directly.This is a preparation of the change the pipe input/output.Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: Andi Kleen Cc: Ian Rogers Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20210719223153.1618812-2-namhyung@kernel.org[ Fixed up some trivial conflicts as this patchset fell thru the cracks ;-( ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

2775de0b - perf report: Add --skip-empty option to suppress 0 event stat

Tue, 27 Apr 2021 01:37:15 +0000

perf report: Add --skip-empty option to suppress 0 event statTo make the output more readable, I think it's better to remove 0's inthe output. Also the dummy event has no event stats so it just waststhe space. Let's use the --skip-empty option to suppress it. $ perf report --stat --skip-empty Aggregated stats: TOTAL events: 16530 MMAP events: 226 COMM events: 1596 EXIT events: 2 THROTTLE events: 121 UNTHROTTLE events: 117 FORK events: 1595 SAMPLE events: 719 MMAP2 events: 12147 CGROUP events: 2 FINISHED_ROUND events: 2 THREAD_MAP events: 1 CPU_MAP events: 1 TIME_CONV events: 1 cycles stats: SAMPLE events: 719Reviewed-by: Andi Kleen Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Acked-by: Jiri Olsa Cc: Alexander Shishkin Cc: Ian Rogers Cc: Ingo Molnar Cc: Mark Rutland Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210427013717.1651674-5-namhyung@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

103ed40e - perf session: Add facility to peek at all events

Fri, 15 Nov 2019 12:42:20 +0000

perf session: Add facility to peek at all eventsAUX area samples are not limited in how far back in time the samplecould start. Consequently samples must be queued in advance to allow fortime-ordered processing. To achieve that, addperf_session__peek_events() that walks and peeks at all the events.Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lore.kernel.org/lkml/20191115124225.5247-11-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

c0e53476 - perf evlist: Adopt __set_tracepoint_handlers method from perf_session

Tue, 01 Oct 2019 14:14:26 +0000

perf evlist: Adopt __set_tracepoint_handlers method from perf_sessionIt all operates on the evsels in the session's evlist, so move it to theevlist layer to make it useful to tools not using perf_session, justevlists, like 'perf trace' in live mode.Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-9oc53gnfi53vg82fvolkm85g@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h

ea49e01c - perf tools: Move event synthesizing routines to separate header

Wed, 18 Sep 2019 14:36:13 +0000

perf tools: Move event synthesizing routines to separate headerThose are the only routines using the perf_event__handler_t typedef andare all related, so move to a separate header to reduce the headerdependency tree, lots of places were getting event.h and even stdio.h,limits.h indirectly, so fix those as well.Cc: Adrian Hunter Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lkml.kernel.org/n/tip-yvx9u1mf7baq6cu1abfhbqgs@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/util/session.h