02 Nov, 2017
1 commit
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Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.By default all files without license information are under the default
license of the kernel, which is GPL version 2.Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if
Reviewed-by: Philippe Ombredanne
Reviewed-by: Thomas Gleixner
Signed-off-by: Greg Kroah-Hartman
27 Mar, 2017
1 commit
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We got it from the git sources but never used it for anything, with the
place where this would be somehow used remaining:static int run_builtin(struct cmd_struct *p, int argc, const char **argv)
{
prefix = NULL;
if (p->option & RUN_SETUP)
prefix = NULL; /* setup_perf_directory(); */Ditch it.
Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-uw5swz05vol0qpr32c5lpvus@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
23 Jun, 2016
1 commit
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To match the semantics for list.h in the kernel, that are used to
implement those macros.Cc: Adrian Hunter
Cc: David Ahern
Cc: Jiri Olsa
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Taeung Song
Cc: Wang Nan
Link: http://lkml.kernel.org/n/tip-qbcjlgj0ffxquxscahbpddi3@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
09 Jan, 2016
1 commit
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To use dynamic sort keys, it might be good to add an option to see the
list of field names.$ perf evlist -i perf.data.sched
sched:sched_switch
sched:sched_stat_wait
sched:sched_stat_sleep
sched:sched_stat_iowait
sched:sched_stat_runtime
sched:sched_process_fork
sched:sched_wakeup
sched:sched_wakeup_new
sched:sched_migrate_task
# Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events$ perf evlist -i perf.data.sched --trace-fields
sched:sched_switch: trace_fields: prev_comm,prev_pid,prev_prio,prev_state,next_comm,next_pid,next_prio
sched:sched_stat_wait: trace_fields: comm,pid,delay
sched:sched_stat_sleep: trace_fields: comm,pid,delay
sched:sched_stat_iowait: trace_fields: comm,pid,delay
sched:sched_stat_runtime: trace_fields: comm,pid,runtime,vruntime
sched:sched_process_fork: trace_fields: parent_comm,parent_pid,child_comm,child_pid
sched:sched_wakeup: trace_fields: comm,pid,prio,success,target_cpu
sched:sched_wakeup_new: trace_fields: comm,pid,prio,success,target_cpu
sched:sched_migrate_task: trace_fields: comm,pid,prio,orig_cpu,dest_cpuCommitter notes:
For another file, in verbose mode:
# perf evlist -v --trace-fields
sched:sched_switch: type: 2, size: 112, config: 0x10b, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW, disabled: 1, inherit: 1, mmap: 1, comm: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, trace_fields: prev_comm,prev_pid,prev_prio,prev_state,next_comm,next_pid,next_prio
#Signed-off-by: Namhyung Kim
Cc: Andi Kleen
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Peter Zijlstra
Cc: Steven Rostedt
Cc: Wang Nan
Link: http://lkml.kernel.org/r/1452125549-1511-5-git-send-email-namhyung@kernel.org
[ Replaced 'trace_fields=' with 'trace_fields: ' to make the output consistent in -v mode ]
Signed-off-by: Arnaldo Carvalho de Melo
18 Dec, 2015
1 commit
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Move the subcommand-related files from perf to a new library named
libsubcmd.a.Since we're moving files anyway, go ahead and rename 'exec_cmd.*' to
'exec-cmd.*' to be consistent with the naming of all the other files.Signed-off-by: Josh Poimboeuf
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/c0a838d4c878ab17fee50998811612b2281355c1.1450193761.git.jpoimboe@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
27 Oct, 2015
1 commit
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Now usage_with_options() setup a pager before printing message so normal
printf() or pr_err() will not be shown. The usage_with_options_msg()
can be used to print some help message before usage strings.Signed-off-by: Namhyung Kim
Acked-by: Masami Hiramatsu
Cc: David Ahern
Cc: Jiri Olsa
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1445701767-12731-4-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
03 Apr, 2015
1 commit
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Enable perf evlist to use perf.data when it is not owned by current user
or root.Example:
# perf record ls
# chown Yunlong.Song:Yunlong.Song perf.data
# ls -al perf.data
-rw------- 1 Yunlong.Song Yunlong.Song 28260 Apr 2 10:18 perf.data
# id
uid=0(root) gid=0(root) groups=0(root),64(pkcs11)Before this patch:
# perf evlist
File perf.data not owned by current user or root (use -f to override)
# perf evlist -f
Error: unknown switch `f'usage: perf evlist []
-i, --input Input file name
-F, --freq Show the sample frequency
-v, --verbose Show all event attr details
-g, --group Show event group informationAs shown above, the -f option does not work at all.
After this patch:
# perf evlist
File perf.data not owned by current user or root (use -f to override)
# perf evlist -f
cyclesAs shown above, the -f option really works now.
Signed-off-by: Yunlong Song
Tested-by: Arnaldo Carvalho de Melo
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Wang Nan
Link: http://lkml.kernel.org/r/1427982439-27388-2-git-send-email-yunlong.song@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo
26 Sep, 2014
1 commit
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Because perf_session__new() can fail for more reasons than just ENOMEM,
modify error code(ENOMEM or EINVAL) to -1.Signed-off-by: Taeung Song
Acked-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Jiri Olsa
Cc: Namhyung Kim
Link: http://lkml.kernel.org/r/1411522417-9917-1-git-send-email-treeze.taeung@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo
17 Jul, 2014
1 commit
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Moving pr_* debug macros to have it with in same object as debug
variables, becase we will change them to use verbose variable in next
patch.Signed-off-by: Jiri Olsa
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1405374411-29012-3-git-send-email-jolsa@kernel.org
[ Add missing debug.h include in python scripting glue and in the libdw unwind lib ]
Signed-off-by: Arnaldo Carvalho de Melo
13 Jan, 2014
1 commit
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For the common evsel list traversal, so that it becomes more compact.
Use the opportunity to start ditching the 'perf_' from 'perf_evlist__',
as discussed, as the whole conversion touches a lot of places, lets do
it piecemeal when we have the chance due to other work, like in this
case.Cc: Adrian Hunter
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-qnkx7dzm2h6m6uptkfk03ni6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
22 Oct, 2013
1 commit
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This patch is adding 'struct perf_data_file' object as a placeholder for
all attributes regarding perf.data file handling. Changing
perf_session__new to take it as an argument.The rest of the functionality will be added later to keep this change
simple enough, because all the places using perf_session are changed
now.Signed-off-by: Jiri Olsa
Acked-by: Namhyung Kim
Cc: Adrian Hunter
Cc: Andi Kleen
Cc: Corey Ashford
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1381847254-28809-2-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo
07 Feb, 2013
1 commit
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So that we avoid dragging symbol.o into the python binding.
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-izjubje7ltd1srji5wb0ygwi@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
01 Feb, 2013
1 commit
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Add '-g/--group' option for showing event groups. For simplicity it is
currently not compatible with other options.$ perf evlist --group
{ref-cycles,cycles}$ perf evlist
ref-cycles
cyclesSuggested-by: Arnaldo Carvalho de Melo
Signed-off-by: Namhyung Kim
Cc: Ingo Molnar
Cc: Jiri Olsa
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1358845787-1350-20-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
12 Dec, 2012
1 commit
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So that we can print all the details when debugging other tools,
when we have just evlists and evsels, not a perf.data file.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-mktq5fy2h5z7jyeqvvf5mbc8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
29 Oct, 2012
1 commit
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Currently many perf commands annotate/evlist/report/script/lock etc all
support "-i" option to chose a specific perf data, and all of them
create a local "input_name" to save the file name for that perf data.Since most of these commands need it, we can add a global variable for
it, also it can some other benefits:1. When calling script browser inside hists/annotation browser, it needs
to know the perf data file name to run that script.2. For further feature like runtime switching to another perf data file,
this variable can also help.Signed-off-by: Feng Tang
Cc: Andi Kleen
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/r/1351569369-26732-2-git-send-email-feng.tang@intel.com
Signed-off-by: Arnaldo Carvalho de Melo
03 Oct, 2012
1 commit
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Some variables were global but used in just one function, so move it to
where it belongs.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-p80wec3z0vafe8dd0kz6ynyz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
11 Sep, 2012
1 commit
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perf defines both __used and __unused variables to use for marking
unused variables. The variable __used is defined to
__attribute__((__unused__)), which contradicts the kernel definition to
__attribute__((__used__)) for new gcc versions. On Android, __used is
also defined in system headers and this leads to warnings like: warning:
'__used__' attribute ignored__unused is not defined in the kernel and is not a standard definition.
If __unused is included everywhere instead of __used, this leads to
conflicts with glibc headers, since glibc has a variables with this name
in its headers.The best approach is to use __maybe_unused, the definition used in the
kernel for __attribute__((unused)). In this way there is only one
definition in perf sources (instead of 2 definitions that point to the
same thing: __used and __unused) and it works on both Linux and Android.
This patch simply replaces all instances of __used and __unused with
__maybe_unused.Signed-off-by: Irina Tirdea
Acked-by: Pekka Enberg
Cc: David Ahern
Cc: Ingo Molnar
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Steven Rostedt
Link: http://lkml.kernel.org/r/1347315303-29906-7-git-send-email-irina.tirdea@intel.com
[ committer note: fixed up conflict with a116e05 in builtin-sched.c ]
Signed-off-by: Arnaldo Carvalho de Melo
20 Jun, 2012
1 commit
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So that we don't use global variables that could make us misreport event
names when having a multi window top, for instance.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-mccancovi1u0wdkg8ncth509@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
24 May, 2012
1 commit
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It was a global variable, so it was initialized, implicitely, to zero by
being placed in the bss.Now it is just a local variable that is then passed to the __cmd_evlist
routine, so it must be explicitely set to NULL.The problem manifested on a Fedora 17 system, using:
gcc version 4.7.0 20120507 (Red Hat 4.7.0-5) (GCC)
But not on several other systems, by luck.
Reported-by: Ingo Molnar
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-5e8wolcjs3rgd5i6yi995gfh@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
23 May, 2012
1 commit
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There was no easy way to see the frequency used, and with the change of
default, we better provide one.[root@sandy linux]# perf evlist -F
cycles: sample_freq=4000
[root@sandy linux]# perf evlist -v
cycles: sample_freq=4000, size: 80, sample_type: 391, read_format: 7, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, sample_id_all: 1, exclude_guest: 1
[root@sandy linux]#Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Mike Galbraith
Cc: Namhyung Kim
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/n/tip-e1p9poez3nwrgycbmwqmhlsu@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
24 Dec, 2011
1 commit
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The default input file for perf report is not handled the same way as
perf record does it for its output file. This leads to unexpected
behavior of perf report, etc. E.g.:# perf record -a -e cpu-cycles sleep 2 | perf report | cat
failed to open perf.data: No such file or directory (try 'perf record' first)While perf record writes to a fifo, perf report expects perf.data to be
read. This patch changes this to accept fifos as input file.Applies to the following commands:
perf annotate
perf buildid-list
perf evlist
perf kmem
perf lock
perf report
perf sched
perf script
perf timechartAlso fixes char const* -> const char* type declaration for filename
strings.v2:
* Prevent potential null pointer access to input_name in
builtin-report.c. Needed due to removal of patch "perf report: Setup
browser if stdout is a pipe"Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Peter Zijlstra
Cc: Stephane Eranian
Link: http://lkml.kernel.org/r/1323248577-11268-5-git-send-email-robert.richter@amd.com
Signed-off-by: Robert Richter
Signed-off-by: Arnaldo Carvalho de Melo
15 Mar, 2011
1 commit
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[root@emilia ~]# perf record -a -e sched:* -e timer:timer* sleep 5
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.172 MB perf.data (~7530 samples) ]
[root@emilia ~]# perf evlist
sched:sched_kthread_stop
sched:sched_kthread_stop_ret
sched:sched_wakeup
sched:sched_wakeup_new
sched:sched_switch
sched:sched_migrate_task
sched:sched_process_free
sched:sched_process_exit
sched:sched_wait_task
sched:sched_process_wait
sched:sched_process_fork
sched:sched_stat_wait
sched:sched_stat_sleep
sched:sched_stat_iowait
sched:sched_stat_runtime
sched:sched_pi_setprio
timer:timer_init
timer:timer_start
timer:timer_expire_entry
timer:timer_expire_exit
timer:timer_cancel
[root@emilia ~]#Cc: Frederic Weisbecker
Cc: Ingo Molnar
Cc: Mike Galbraith
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Tom Zanussi
LKML-Reference:
Signed-off-by: Arnaldo Carvalho de Melo