Changes in Build

8a54784e - perf build: Add pylint build tests

Tue, 11 Mar 2025 21:36:26 +0000

perf build: Add pylint build testsIf PYLINT=1 is passed to the build then run pylint over python code inperf. Unlike shellcheck this isn't default on as there are currentlytoo many errors.An example of an error:```************* Module setuputil/setup.py:19:0: C0301: Line too long (127/100) (line-too-long)util/setup.py:20:0: C0301: Line too long (138/100) (line-too-long)util/setup.py:63:0: C0301: Line too long (106/100) (line-too-long)util/setup.py:1:0: C0114: Missing module docstring (missing-module-docstring)util/setup.py:24:4: W0622: Redefining built-in 'vars' (redefined-builtin)util/setup.py:11:4: C0103: Constant name "cc_options" doesn't conform to UPPER_CASE naming style (invalid-name)util/setup.py:13:4: C0103: Constant name "cc_options" doesn't conform to UPPER_CASE naming style (invalid-name)util/setup.py:15:34: R1732: Consider using 'with' for resource-allocating operations (consider-using-with)util/setup.py:18:0: C0116: Missing function or method docstring (missing-function-docstring)util/setup.py:19:16: R1732: Consider using 'with' for resource-allocating operations (consider-using-with)util/setup.py:44:0: C0413: Import "from setuptools import setup, Extension" should be placed at the top of the module (wrong-import-position)util/setup.py:46:0: C0413: Import "from setuptools.command.build_ext import build_ext as _build_ext" should be placed at the top of the module (wrong-import-position)util/setup.py:47:0: C0413: Import "from setuptools.command.install_lib import install_lib as _install_lib" should be placed at the top of the module (wrong-import-position)util/setup.py:49:0: C0115: Missing class docstring (missing-class-docstring)util/setup.py:49:0: C0103: Class name "build_ext" doesn't conform to PascalCase naming style (invalid-name)util/setup.py:52:8: W0201: Attribute 'build_lib' defined outside __init__ (attribute-defined-outside-init)util/setup.py:53:8: W0201: Attribute 'build_temp' defined outside __init__ (attribute-defined-outside-init)util/setup.py:55:0: C0115: Missing class docstring (missing-class-docstring)util/setup.py:55:0: C0103: Class name "install_lib" doesn't conform to PascalCase naming style (invalid-name)util/setup.py:58:8: W0201: Attribute 'build_dir' defined outside __init__ (attribute-defined-outside-init)*-----------------------------------------------------------------Your code has been rated at 6.67/10 (previous run: 6.51/10, +0.16)make[4]: *** [util/Build:442: util/setup.py.pylint_log] Error 1```Reviewed-by: James Clark Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250311213628.569562-5-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/Build

168910d0 - perf build: Add mypy build tests

Tue, 11 Mar 2025 21:36:25 +0000

perf build: Add mypy build testsIf MYPY=1 is passed to the build then run mypy over python code inperf. Unlike shellcheck this isn't default on as there are currentlytoo many errors.An example of an error:```util/setup.py:8: error: Item "None" of "str | None" has no attribute "split" [union-attr]util/setup.py:15: error: Item "None" of "IO[bytes] | None" has no attribute "readline" [union-attr]util/setup.py:15: error: List item 0 has incompatible type "str | None"; expected "str | bytes | PathLike[str] | PathLike[bytes]" [list-item]util/setup.py:16: error: Unsupported left operand type for + ("None") [operator]util/setup.py:16: note: Left operand is of type "str | None"util/setup.py:74: error: Unsupported left operand type for + ("None") [operator]util/setup.py:74: note: Left operand is of type "str | None"Found 5 errors in 1 file (checked 1 source file)make[4]: *** [util/Build:430: util/setup.py.mypy_log] Error 1```Reviewed-by: James Clark Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250311213628.569562-4-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/Build

ef238109 - perf build: Rename TEST_LOGS to SHELL_TEST_LOGS

Tue, 11 Mar 2025 21:36:24 +0000

perf build: Rename TEST_LOGS to SHELL_TEST_LOGSRename TEST_LOGS to SHELL_TEST_LOGS as later changes will add morekinds of test logs.Minor comment tweak in Makefile.perf as more than just test shelltests are checked.Reviewed-by: James Clark Signed-off-by: Ian Rogers Link: https://lore.kernel.org/r/20250311213628.569562-3-irogers@google.comSigned-off-by: Namhyung Kim List of files: /linux-6.15/tools/perf/Build

98ad0b77 - perf check: Introduce 'check' subcommand

Wed, 04 Sep 2024 06:18:31 +0000

perf check: Introduce 'check' subcommandCurrently the presence of a feature is checked with a combination ofperf version --build-options and greps, such as: perf version --build-options | grep " on .* HAVE_FEATURE"Instead of this, introduce a subcommand "perf check feature", with whichscripts can test for presence of a feature, such as: perf check feature HAVE_FEATURE'perf check feature' command is expected to have exit status of 0 iffeature is built-in, and 1 if it's not built-in or if feature is not known.Multiple features can also be passed as a comma-separated list, in whichcase the exit status will be 1 only if all of the passed features arebuilt-in. For example, with below command, it will have exit status of 0only if both libtraceevent and bpf are enabled, else 1 in all other cases perf check feature libtraceevent,bpfThe arguments are case-insensitive.An array 'supported_features' has also been introduced that can be used byother commands like 'perf version --build-options', so that new featurescan be added in one place, with the arrayCommitter testing: $ perf check feature libtraceevent,bpf libtraceevent: [ on ] # HAVE_LIBTRACEEVENT bpf: [ on ] # HAVE_LIBBPF_SUPPORT $ perf check feature libtraceevent libtraceevent: [ on ] # HAVE_LIBTRACEEVENT $ perf check feature bpf bpf: [ on ] # HAVE_LIBBPF_SUPPORT $ perf check -q feature bpf && echo "BPF support is present" BPF support is present $ perf check -q feature Bogus && echo "Bogus support is present" $Reviewed-by: Athira Rajeev Signed-off-by: Aditya Gupta Tested-by: Arnaldo Carvalho de Melo Cc: Athira Rajeev Cc: Disha Goel Cc: Ian Rogers Cc: Jiri Olsa Cc: Kajol Jain Cc: Madhavan Srinivasan Cc: Namhyung Kim Link: https://lore.kernel.org/r/20240904061836.55873-3-adityag@linux.ibm.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

e467705a - perf util: Make util its own library

Tue, 25 Jun 2024 21:41:15 +0000

perf util: Make util its own libraryMake the util directory into its own library. This is done to avoidcompiling code twice, once for the perf tool and once for the perfpython module. For convenience: arch/common.c scripts/perl/Perf-Trace-Util/Context.c scripts/python/Perf-Trace-Util/Context.care made part of this library.Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-7-irogers@google.com List of files: /linux-6.15/tools/perf/Build

21cc3bc0 - perf bench: Make bench its own library

Tue, 25 Jun 2024 21:41:14 +0000

perf bench: Make bench its own libraryMake the benchmark code into a library so it may be linked againstthings like the python module to avoid compiling code twice.Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-6-irogers@google.com List of files: /linux-6.15/tools/perf/Build

1dad99af - perf test: Make tests its own library

Tue, 25 Jun 2024 21:41:13 +0000

perf test: Make tests its own libraryMake the tests code its own library. This is done to avoid compilingcode twice, once for the perf tool and once for the perf pythonmodule.Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-5-irogers@google.com List of files: /linux-6.15/tools/perf/Build

39f3ce5c - perf ui: Make ui its own library

Tue, 25 Jun 2024 21:41:11 +0000

perf ui: Make ui its own libraryMake the ui code its own library. This is done to avoid compiling codetwice, once for the perf tool and once for the perf python module.Signed-off-by: Ian Rogers Reviewed-by: James Clark Cc: Suzuki K Poulose Cc: Kees Cook Cc: Palmer Dabbelt Cc: Albert Ou Cc: Nick Terrell Cc: Gary Guo Cc: Alex Gaynor Cc: Boqun Feng Cc: Wedson Almeida Filho Cc: Ze Gao Cc: Alice Ryhl Cc: Andrei Vagin Cc: Yicong Yang Cc: Jonathan Cameron Cc: Guo Ren Cc: Miguel Ojeda Cc: Will Deacon Cc: Mike Leach Cc: Leo Yan Cc: Oliver Upton Cc: John Garry Cc: Benno Lossin Cc: Björn Roy Baron Cc: Andreas Hindborg Cc: Paul Walmsley Signed-off-by: Namhyung Kim Link: https://lore.kernel.org/r/20240625214117.953777-3-irogers@google.com List of files: /linux-6.15/tools/perf/Build

646e22eb - perf build: Add shellcheck to tools/perf scripts

Tue, 09 Apr 2024 02:32:13 +0000

perf build: Add shellcheck to tools/perf scriptsAddress shell check errors/warnings in perf-archive.sh andperf-completion.sh.Reviewed-by: James Clark Signed-off-by: Ian Rogers Cc: Adrian Hunter Cc: Alexander Shishkin Cc: Athira Rajeev Cc: Ingo Molnar Cc: Jiri Olsa Cc: Kajol Jain Cc: Kan Liang Cc: Mark Rutland Cc: Namhyung Kim Cc: Oliver Upton Cc: Peter Zijlstra Cc: Ravi Bangoria Link: https://lore.kernel.org/r/20240409023216.2342032-2-irogers@google.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

80c3a7d9 - perf script: Fix Python support when no libtraceevent

Wed, 15 Mar 2023 08:43:21 +0000

perf script: Fix Python support when no libtraceeventPython scripting can be used without libtraceevent. In particular,scripting for Intel PT does not use tracepoints, and so does not needlibtraceevent support.Alter the build and employ conditional compilation to allow Pythonscripting without libtraceevent.Example: Before: $ ldd `which perf` | grep -i python $ ldd `which perf` | grep -i libtraceevent $ perf record -e intel_pt//u uname Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.031 MB perf.data ] $ perf script intel-pt-events.py |& head -3 Error: Couldn't find script `intel-pt-events.py' See perf script -l for available scripts. After: $ ldd `which perf` | grep -i python libpython3.10.so.1.0 => /lib/x86_64-linux-gnu/libpython3.10.so.1.0 (0x00007f4bac400000) $ ldd `which perf` | grep -i libtraceevent $ perf script intel-pt-events.py | head Intel PT Branch Trace, Power Events, Event Trace and PTWRITE Switch In 8021/8021 [000] 11234.097713404 0/0 perf-exec 8021/8021 [000] 11234.098041726 psb offset: 0x0 0 [unknown] ([unknown]) perf-exec 8021/8021 [000] 11234.098041726 cbr 45 freq: 4505 MHz (161%) 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098082170 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098082379 branches:uH tr end 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) uname 8021/8021 [000] 11234.098083629 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b9422b0 _start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083629 branches:uH call 7f3a8b9422b3 _start+0x3 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 7f3a8b943050 _dl_start+0x0 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) uname 8021/8021 [000] 11234.098083837 branches:uH tr end 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2) => 0 [unknown] ([unknown]) IPC: 0.01 (9/938) uname 8021/8021 [000] 11234.098084670 branches:uH tr strt 0 [unknown] ([unknown]) => 7f3a8b943060 _dl_start+0x10 (/usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2)Fixes: 378ef0f5d9d7f465 ("perf build: Use libtraceevent from the system")Signed-off-by: Adrian Hunter Cc: Ian Rogers Cc: Jiri Olsa Cc: Namhyung Kim Link: https://lore.kernel.org/r/20230315084321.14563-1-adrian.hunter@intel.comSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

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/Build

0f70d8e9 - perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue)

Sat, 09 Jul 2022 01:50:17 +0000

perf kwork: New tool to trace time properties of kernel work (such as softirq, and workqueue)The 'perf kwork' tool is used to trace time properties of kernel work(such as irq, softirq, and workqueue), including runtime, latency, andtimehist, using the infrastructure in the perf tools to allow tracingextra targets.This is the first commit to reuse the 'perf record' framework code toimplement a simple record function, kwork is not supported currently.Test cases: # perf usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS] The most commonly used perf commands are: iostat Show I/O performance metrics kallsyms Searches running kernel for symbols kmem Tool to trace/measure kernel memory properties kvm Tool to trace/measure kvm guest os kwork Tool to trace/measure kernel work properties (latencies) list List all symbolic event types lock Analyze lock events mem Profile memory accesses record Run a command and record its profile into perf.data See 'perf help COMMAND' for more information on a specific command. # perf kwork Usage: perf kwork [] {record} -D, --dump-raw-trace dump raw trace in ASCII -f, --force don't complain, do it -k, --kwork list of kwork to profile -v, --verbose be more verbose (show symbol address, etc) # perf kwork record -- sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 1.787 MB perf.data ]Signed-off-by: Yang Jihong Tested-by: Arnaldo Carvalho de Melo Cc: Alexander Shishkin Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Paul Clarke Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20220709015033.38326-2-yangjihong1@huawei.com[ Add {} for multiline if blocks ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

d450bc50 - perf daemon: Add daemon command

Mon, 08 Feb 2021 20:08:45 +0000

perf daemon: Add daemon commandAdd a daemon skeleton with a minimal base (non) functionality, coveringvarious setup in start command.Add an initial perf-daemon.txt with basic info.This is in response to pople asking for the possibility to be able runrecord long running sessions on the background.The patchset that starts with this adds support to configure and runrecord sessions on background via new 'perf daemon' command.This is useful for being able to use perf as a flight recorder that onecan interact with asking for events to be enabled or disabled, added orremoved, etc.Signed-off-by: Jiri Olsa Cc: Alexander Shishkin Cc: Alexei Budankov Cc: Arnaldo Carvalho de Melo Cc: Ian Rogers Cc: Ingo Molnar Cc: Mark Rutland Cc: Michael Petlan Cc: Namhyung Kim Cc: Peter Zijlstra Link: https://lore.kernel.org/r/20210208200908.1019149-2-jolsa@kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

5ff32883 - perf tools: Rename build libperf to perf

Wed, 13 Feb 2019 12:32:39 +0000

perf tools: Rename build libperf to perfRename 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.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

b3fa3896 - perf trace: Remove audit-libs dependency if syscall tables are present

Fri, 19 Jan 2018 08:56:17 +0000

perf trace: Remove audit-libs dependency if syscall tables are presentChange the Makefile and build process to no longer require audit-libsinterfaces when the architecture provides system call tables.Committer notes:Its not enough to hook into the NO_LIBAUDIT makefile block, we need todefine a CONFIG_TRACE that gets selected by both architecturesgenerating the syscall tables from the kernel headers and from detectingthe availability of libaudit.With that in place we will not link against libaudit even if thenecessary files are available for that, in fact we will not even try todetect its availability, speeding up a bit the feature detection phase.Signed-off-by: Hendrik Brueckner Reviewed-by: Thomas Richter Tested-by: Arnaldo Carvalho de Melo Cc: Jiri Olsa Cc: Michael Petlan Cc: linux-s390@vger.kernel.orgLPU-Reference: 1516352177-11106-6-git-send-email-brueckner@linux.vnet.ibm.comLink: https://lkml.kernel.org/n/tip-j68lub6ipm8apvy52vd3l4cm@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

5ca55ab6 - perf trace: Only build tools/perf/trace/beauty/ when building 'perf trace'

Fri, 14 Jul 2017 19:25:35 +0000

perf trace: Only build tools/perf/trace/beauty/ when building 'perf trace'As it calls functions in builtin-trace.c.Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-bt3lhw1rvy3jzbsp2fvvegb0@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

fd5cead2 - perf trace: Beautify statx syscall 'flag' and 'mask' arguments

Tue, 14 Mar 2017 19:19:30 +0000

perf trace: Beautify statx syscall 'flag' and 'mask' argumentsTo test it, build samples/statx/test_statx, which I did as: $ make headers_install $ cc -I ~/git/linux/usr/include samples/statx/test-statx.c -o /tmp/statxAnd then use perf trace on it: # perf trace -e statx /tmp/statx /etc/passwd statx(/etc/passwd) = 0 results=7ff Size: 3496 Blocks: 8 IO Block: 4096 regular file Device: fd:00 Inode: 280156 Links: 1 Access: (0644/-rw-r--r--) Uid: 0 Gid: 0 Access: 2017-03-29 16:01:01.650073438-0300 Modify: 2017-03-10 16:25:14.156479354-0300 Change: 2017-03-10 16:25:14.171479328-0300 0.000 ( 0.007 ms): statx/30648 statx(dfd: CWD, filename: 0x7ef503f4, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff7ef4eb10) = 0 #Using the test-stat.c options to change the mask: # perf trace -e statx /tmp/statx -O /etc/passwd > /dev/null 0.000 ( 0.008 ms): statx/30745 statx(dfd: CWD, filename: 0x3a0753f4, flags: SYMLINK_NOFOLLOW, mask: BTIME, buffer: 0x7ffd3a0735c0) = 0 # # perf trace -e statx /tmp/statx -A /etc/passwd > /dev/null 0.000 ( 0.010 ms): statx/30757 statx(dfd: CWD, filename: 0xa94e63f4, flags: SYMLINK_NOFOLLOW|NO_AUTOMOUNT, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffea94e49d0) = 0 # # trace --no-inherit -e statx /tmp/statx -F /etc/passwd > /dev/null 0.000 ( 0.011 ms): statx(dfd: CWD, filename: 0x3b02d3f3, flags: SYMLINK_NOFOLLOW|STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffd3b02c850) = 0 # # trace --no-inherit -e statx /tmp/statx -F -L /etc/passwd > /dev/null 0.000 ( 0.008 ms): statx(dfd: CWD, filename: 0x15cff3f3, flags: STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff15cfdda0) = 0 # # trace --no-inherit -e statx /tmp/statx -D -O /etc/passwd > /dev/null 0.000 ( 0.009 ms): statx(dfd: CWD, filename: 0xfa37f3f3, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffffa37da20) = 0 #Adding a probe to get the filename collected as well: # perf probe 'vfs_getname=getname_flags:72 pathname=result->name:string' Added new event: probe:vfs_getname (on getname_flags:72 with pathname=result->name:string) You can now use it in all perf tools, such as: perf record -e probe:vfs_getname -aR sleep 1 # trace --no-inherit -e statx /tmp/statx -D -O /etc/passwd > /dev/null 0.169 ( 0.007 ms): statx(dfd: CWD, filename: /etc/passwd, flags: SYMLINK_NOFOLLOW|STATX_DONT_SYNC, mask: BTIME, buffer: 0x7ffda9bf50f0) = 0 #Same technique could be used to collect and beautify the result put inthe 'buffer' argument.Finally do a system wide 'perf trace' session looking for any use of statx,then run the test proggie with various flags: # trace -e statx 16612.967 ( 0.028 ms): statx/4562 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffef195d660) = 0 33064.447 ( 0.011 ms): statx/4569 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW|STATX_FORCE_SYNC, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7ffc5484c790) = 0 36050.891 ( 0.023 ms): statx/4576 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: BTIME, buffer: 0x7ffeb18b66e0) = 0 38039.889 ( 0.023 ms): statx/4584 statx(dfd: CWD, filename: /tmp/statx, flags: SYMLINK_NOFOLLOW, mask: TYPE|MODE|NLINK|UID|GID|ATIME|MTIME|CTIME|INO|SIZE|BLOCKS|BTIME, buffer: 0x7fff1db0ea90) = 0 ^C#This one also starts moving the beautifiers from files directly includedin builtin-trace.c to separate objects + a beauty.h header withprototypes, so that we can add test cases in tools/perf/tests/ to firesyscalls with various arguments and then get them intercepted assyscalls:sys_enter_foo or raw_syscalls:sys_enter + sys_exit to thenformat and check that the formatted output is the one we expect.Cc: Adrian Hunter Cc: Al Viro Cc: David Ahern Cc: David Howells Cc: Jiri Olsa Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-xvzw8eynffvez5czyzidhrno@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

d01f4e8d - perf ftrace: Introduce new 'ftrace' tool

Thu, 07 Mar 2013 12:45:20 +0000

perf ftrace: Introduce new 'ftrace' toolThe 'perf ftrace' command is a simple wrapper of kernel's ftracefunctionality. It only supports single thread tracing currently andjust reads trace_pipe in text and then write it to stdout.Committer notes:Testing it: # perf ftrace -f function_graph usleep 123456 2) | SyS_nanosleep() { 2) | _copy_from_user() { 2) 0.900 us | } 2) 1.354 us | } 2) | hrtimer_nanosleep() { 2) 0.062 us | __hrtimer_init(); 2) | do_nanosleep() { 2) | hrtimer_start_range_ns() { 2) 5.025 us | } 2) | schedule() { 2) 0.125 us | rcu_note_context_switch(); 2) 0.057 us | _raw_spin_lock(); 2) | deactivate_task() { 2) 0.369 us | update_rq_clock.part.77(); 2) | dequeue_task_fair() { 2) + 22.453 us | } 2) + 23.736 us | } 2) | pick_next_task_fair() { 2) + 47.167 us | } 2) | pick_next_task_idle() { 2) 4.462 us | } ------------------------------------------ 2) usleep-20387 => -0 ------------------------------------------ 2) 0.806 us | switch_mm_irqs_off(); ------------------------------------------ 2) -0 => usleep-20387 ------------------------------------------ 2) 0.151 us | finish_task_switch(); 2) @ 123597.2 us | } 2) 0.037 us | _cond_resched(); 2) | hrtimer_try_to_cancel() { 2) 0.064 us | hrtimer_active(); 2) 0.353 us | } 2) @ 123605.3 us | } 2) @ 123606.2 us | } 2) @ 123608.3 us | } /* SyS_nanosleep */ 2) | __do_page_fault() { Signed-off-by: Namhyung Kim Tested-by: Arnaldo Carvalho de Melo Tested-by: Masami Hiramatsu Cc: Frederic Weisbecker Cc: Jeremy Eder Cc: Jiri Olsa ,Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Steven Rostedt Link: http://lkml.kernel.org/n/tip-r1hgmsj4dxny8arn3o9mw512@git.kernel.org[ Various foward port fixes, add man page ]Signed-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

d25ed5d9 - perf tools: Move two variables usied in libperf from perf.c

Mon, 16 Jan 2017 15:22:37 +0000

perf tools: Move two variables usied in libperf from perf.cThe use_browser and perf_version_string variables are both declared inperf.c but they are also referenced by other functions of libperf.a.Therefore a user linking an own main() with libperf.a must declare thosetwo variables in their files even if the files never use the browser orthe version information.This patch fixes this issue by moving use_browser andperf_version_string out of perf.c to some other files.Signed-off-by: Soramichi Akiyama Cc: Alexander Shishkin Cc: Peter Zijlstra Link: http://lkml.kernel.org/r/20170117002237.c1aec0ce3b4d675dca018deb@m.soramichi.jpSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build

35563771 - perf kallsyms: Introduce tool to look for extended symbol information on the running kernel

Thu, 05 Jan 2017 18:33:32 +0000

perf kallsyms: Introduce tool to look for extended symbol information on the running kernelIts similar to doing grep on a /proc/kallsyms, but it also shows extrainformation like the path to the kernel module and the unrelocatedaddresses in it, to help in diagnosing problems.It is also helps demonstrate the use of the symbols routines so thattool writers can use them more effectively.Using it: $ perf kallsyms e1000_xmit_frame netif_rx usb_stor_set_xfer_buf e1000_xmit_frame: [e1000e] /lib/modules/4.9.0+/kernel/drivers/net/ethernet/intel/e1000e/e1000e.ko 0xffffffffc046fc10-0xffffffffc0470bb0 (0x19c80-0x1ac20) netif_rx: [kernel] [kernel.kallsyms] 0xffffffff916f03a0-0xffffffff916f0410 (0xffffffff916f03a0-0xffffffff916f0410) usb_stor_set_xfer_buf: [usb_storage] /lib/modules/4.9.0+/kernel/drivers/usb/storage/usb-storage.ko 0xffffffffc057aea0-0xffffffffc057af19 (0xf10-0xf89) $Cc: Adrian Hunter Cc: David Ahern Cc: Jiri Olsa Cc: Masami Hiramatsu Cc: Namhyung Kim Cc: Wang Nan Link: http://lkml.kernel.org/n/tip-79bk9pakujn4l4vq0f90klv3@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo List of files: /linux-6.15/tools/perf/Build