License cleanup: add SPDX GPL-2.0 license identifier to files with no license
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 <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-01 22:07:57 +08:00
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/* SPDX-License-Identifier: GPL-2.0 */
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2009-12-12 07:24:02 +08:00
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#ifndef __PERF_SESSION_H
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#define __PERF_SESSION_H
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2013-12-03 21:09:23 +08:00
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#include "trace-event.h"
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2009-12-14 05:50:25 +08:00
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#include "event.h"
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2009-12-12 07:24:02 +08:00
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#include "header.h"
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2012-11-09 22:32:52 +08:00
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#include "machine.h"
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2013-10-15 22:27:32 +08:00
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#include "data.h"
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2014-08-02 00:02:58 +08:00
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#include "ordered-events.h"
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2019-03-19 01:43:35 +08:00
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#include "util/compress.h"
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2017-04-17 22:39:06 +08:00
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#include <linux/kernel.h>
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2009-12-14 05:50:28 +08:00
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#include <linux/rbtree.h>
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2012-11-20 06:21:03 +08:00
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#include <linux/perf_event.h>
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2009-12-14 05:50:28 +08:00
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2009-12-15 00:22:59 +08:00
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struct ip_callchain;
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2017-04-20 08:34:35 +08:00
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struct symbol;
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2009-12-14 05:50:28 +08:00
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struct thread;
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2009-12-12 07:24:02 +08:00
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2015-04-09 23:53:48 +08:00
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struct auxtrace;
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2015-04-09 23:53:49 +08:00
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struct itrace_synth_opts;
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2015-04-09 23:53:48 +08:00
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2009-12-12 07:24:02 +08:00
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struct perf_session {
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struct perf_header header;
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2012-12-19 06:15:48 +08:00
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struct machines machines;
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2019-07-21 19:23:52 +08:00
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struct evlist *evlist;
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2015-04-09 23:53:48 +08:00
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struct auxtrace *auxtrace;
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2015-04-09 23:53:49 +08:00
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struct itrace_synth_opts *itrace_synth_opts;
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2015-04-30 22:37:25 +08:00
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struct list_head auxtrace_index;
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2013-12-03 21:09:23 +08:00
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struct trace_event tevent;
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2019-08-28 21:57:16 +08:00
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struct perf_record_time_conv time_conv;
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2010-05-01 14:41:20 +08:00
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bool repipe;
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2014-07-14 18:02:51 +08:00
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bool one_mmap;
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void *one_mmap_addr;
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u64 one_mmap_offset;
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2014-07-06 20:23:03 +08:00
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struct ordered_events ordered_events;
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2017-01-24 05:07:59 +08:00
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struct perf_data *data;
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2015-03-31 23:48:16 +08:00
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struct perf_tool *tool;
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2019-03-19 01:41:02 +08:00
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u64 bytes_transferred;
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u64 bytes_compressed;
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2019-03-19 01:43:35 +08:00
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struct zstd_data zstd_data;
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perf report: Implement perf.data record decompression
zstd_init(, comp_level = 0) initializes decompression part of API only
hat now consists of zstd_decompress_stream() function.
The perf.data PERF_RECORD_COMPRESSED records are decompressed using
zstd_decompress_stream() function into a linked list of mmaped memory
regions of mmap_comp_len size (struct decomp).
After decompression of one COMPRESSED record its content is iterated and
fetched for usual processing. The mmaped memory regions with
decompressed events are kept in the linked list till the tool process
termination.
When dumping raw records (e.g., perf report -D --header) file offsets of
events from compressed records are printed as zero.
Committer notes:
Since now we have support for processing PERF_RECORD_COMPRESSED, we see
none, in raw form, like we saw in the previous patch commiter notes,
they were decompressed into the usual PERF_RECORD_{FORK,MMAP,COMM,etc}
records, we only see the stats for those PERF_RECORD_COMPRESSED events,
and since I used the file generated in the commiter notes for the
previous patch, there they are, 2 compressed records:
$ perf report --header-only | grep cmdline
# cmdline : /home/acme/bin/perf record -z2 sleep 1
$ perf report -D | grep COMPRESS
COMPRESSED events: 2
COMPRESSED events: 0
$ perf report --stdio
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 15 of event 'cycles:u'
# Event count (approx.): 962227
#
# Overhead Command Shared Object Symbol
# ........ ....... ................ ...........................
#
46.99% sleep libc-2.28.so [.] _dl_addr
29.24% sleep [unknown] [k] 0xffffffffaea00a67
16.45% sleep libc-2.28.so [.] __GI__IO_un_link.part.1
5.92% sleep ld-2.28.so [.] _dl_setup_hash
1.40% sleep libc-2.28.so [.] __nanosleep
0.00% sleep [unknown] [k] 0xffffffffaea00163
#
# (Tip: To see callchains in a more compact form: perf report -g folded)
#
$
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/304b0a59-942c-3fe1-da02-aa749f87108b@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-19 01:45:11 +08:00
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struct decomp *decomp;
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struct decomp *decomp_last;
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};
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struct decomp {
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struct decomp *next;
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u64 file_pos;
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2019-07-09 22:48:14 +08:00
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size_t mmap_len;
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perf report: Implement perf.data record decompression
zstd_init(, comp_level = 0) initializes decompression part of API only
hat now consists of zstd_decompress_stream() function.
The perf.data PERF_RECORD_COMPRESSED records are decompressed using
zstd_decompress_stream() function into a linked list of mmaped memory
regions of mmap_comp_len size (struct decomp).
After decompression of one COMPRESSED record its content is iterated and
fetched for usual processing. The mmaped memory regions with
decompressed events are kept in the linked list till the tool process
termination.
When dumping raw records (e.g., perf report -D --header) file offsets of
events from compressed records are printed as zero.
Committer notes:
Since now we have support for processing PERF_RECORD_COMPRESSED, we see
none, in raw form, like we saw in the previous patch commiter notes,
they were decompressed into the usual PERF_RECORD_{FORK,MMAP,COMM,etc}
records, we only see the stats for those PERF_RECORD_COMPRESSED events,
and since I used the file generated in the commiter notes for the
previous patch, there they are, 2 compressed records:
$ perf report --header-only | grep cmdline
# cmdline : /home/acme/bin/perf record -z2 sleep 1
$ perf report -D | grep COMPRESS
COMPRESSED events: 2
COMPRESSED events: 0
$ perf report --stdio
# To display the perf.data header info, please use --header/--header-only options.
#
#
# Total Lost Samples: 0
#
# Samples: 15 of event 'cycles:u'
# Event count (approx.): 962227
#
# Overhead Command Shared Object Symbol
# ........ ....... ................ ...........................
#
46.99% sleep libc-2.28.so [.] _dl_addr
29.24% sleep [unknown] [k] 0xffffffffaea00a67
16.45% sleep libc-2.28.so [.] __GI__IO_un_link.part.1
5.92% sleep ld-2.28.so [.] _dl_setup_hash
1.40% sleep libc-2.28.so [.] __nanosleep
0.00% sleep [unknown] [k] 0xffffffffaea00163
#
# (Tip: To see callchains in a more compact form: perf report -g folded)
#
$
Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/304b0a59-942c-3fe1-da02-aa749f87108b@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-03-19 01:45:11 +08:00
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u64 head;
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size_t size;
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char data[];
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2009-12-12 07:24:02 +08:00
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};
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2011-11-28 18:30:20 +08:00
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struct perf_tool;
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2009-12-14 05:50:25 +08:00
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2021-07-20 06:31:49 +08:00
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struct perf_session *__perf_session__new(struct perf_data *data,
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2021-07-20 06:31:50 +08:00
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bool repipe, int repipe_fd,
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2021-07-20 06:31:49 +08:00
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struct perf_tool *tool);
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static inline struct perf_session *perf_session__new(struct perf_data *data,
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struct perf_tool *tool)
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{
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2021-07-20 06:31:50 +08:00
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return __perf_session__new(data, false, -1, tool);
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2021-07-20 06:31:49 +08:00
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}
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2012-12-19 06:15:48 +08:00
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void perf_session__delete(struct perf_session *session);
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2009-12-12 07:24:02 +08:00
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2013-11-06 02:32:36 +08:00
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void perf_event_header__bswap(struct perf_event_header *hdr);
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perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
|
2014-07-31 14:00:57 +08:00
|
|
|
int perf_session__peek_event(struct perf_session *session, off_t file_offset,
|
|
|
|
|
void *buf, size_t buf_sz,
|
|
|
|
|
union perf_event **event_ptr,
|
|
|
|
|
struct perf_sample *sample);
|
2019-11-15 20:42:20 +08:00
|
|
|
typedef int (*peek_events_cb_t)(struct perf_session *session,
|
|
|
|
|
union perf_event *event, u64 offset,
|
|
|
|
|
void *data);
|
|
|
|
|
int perf_session__peek_events(struct perf_session *session, u64 offset,
|
|
|
|
|
u64 size, peek_events_cb_t cb, void *data);
|
2014-07-31 14:00:57 +08:00
|
|
|
|
2015-03-03 22:58:45 +08:00
|
|
|
int perf_session__process_events(struct perf_session *session);
|
2009-12-14 05:50:25 +08:00
|
|
|
|
2015-03-03 22:58:45 +08:00
|
|
|
int perf_session__queue_event(struct perf_session *s, union perf_event *event,
|
2017-08-03 19:24:33 +08:00
|
|
|
u64 timestamp, u64 file_offset);
|
2013-08-03 04:05:41 +08:00
|
|
|
|
|
|
|
|
void perf_tool__fill_defaults(struct perf_tool *tool);
|
|
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
int perf_session__resolve_callchain(struct perf_session *session,
|
2019-07-21 19:23:51 +08:00
|
|
|
struct evsel *evsel,
|
2011-01-14 11:51:58 +08:00
|
|
|
struct thread *thread,
|
|
|
|
|
struct ip_callchain *chain,
|
|
|
|
|
struct symbol **parent);
|
2009-12-15 00:22:59 +08:00
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
bool perf_session__has_traces(struct perf_session *session, const char *msg);
|
2009-12-28 07:37:01 +08:00
|
|
|
|
2011-07-16 02:34:09 +08:00
|
|
|
void perf_event__attr_swap(struct perf_event_attr *attr);
|
perf tools: Cross platform perf.data analysis support
There are still some problems related to loading vmlinux files,
but those are unrelated to the feature implemented in this
patch, so will get fixed in the next patches, but here are some
results:
1. collect perf.data file on a Fedora 12 machine, x86_64, 64-bit
userland
2. transfer it to a Debian Testing machine, PARISC64, 32-bit
userland
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | head -5
74f9930ee94475b6b3238caf3725a50d59cb994b [kernel.kallsyms]
55fdd56670453ea66c011158c4b9d30179c1d049 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/ipt_MASQUERADE.ko
41adff63c730890480980d5d8ba513f1c216a858 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/iptable_nat.ko
90a33def1077bb8e97b8a78546dc96c2de62df46 /lib/modules/2.6.33-rc4-tip+/kernel/net/ipv4/netfilter/nf_nat.ko
984c7bea90ce1376d5c8e7ef43a781801286e62d /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/tun.ko
acme@parisc:~/git/linux-2.6-tip$ perf buildid-list | tail -5
22492f3753c6a67de5c7ccbd6b863390c92c0723 /usr/lib64/libXt.so.6.0.0
353802bb7e1b895ba43507cc678f951e778e4c6f /usr/lib64/libMagickCore.so.2.0.0
d10c2897558595efe7be8b0584cf7e6398bc776c /usr/lib64/libfprint.so.0.0.0
a83ecfb519a788774a84d5ddde633c9ba56c03ab /home/acme/bin/perf
d3ca765a8ecf257d263801d7ad8c49c189082317 /usr/lib64/libdwarf.so.0.0
acme@parisc:~/git/linux-2.6-tip$
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm
The file [kernel.kallsyms] cannot be used, trying to use /proc/kallsyms...
^^^^ The problem related to vmlinux handling, it shouldn't be trying this
^^^^ rather alien /proc/kallsyms at all...
/lib64/libpthread-2.10.2.so with build id 5c68f7afeb33309c78037e374b0deee84dd441f6 not found, continuing without symbols
/lib64/libc-2.10.2.so with build id eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 not found, continuing without symbols
/home/acme/bin/perf with build id a83ecfb519a788774a84d5ddde633c9ba56c03ab not found, continuing without symbols
/usr/sbin/openvpn with build id f2037a091ef36b591187a858d75e203690ea9409 not found, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/e1000e/e1000e.ko, continuing without symbols
Failed to open /lib/modules/2.6.33-rc4-tip+/kernel/drivers/net/wireless/iwlwifi/iwlcore.ko, continuing without symbols
<SNIP more complaints about not finding the right build-ids,
those will have to wait for 'perf archive' or plain
copying what was collected by 'perf record' on the x86_64,
source machine, see further below for an example of this >
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get when running the same command for the
same perf.data file on the F12, x86_64, source machine:
[root@doppio linux-2.6-tip]# perf report --sort comm
# Samples: 293085637
#
# Overhead Command
# ........ ...............
#
61.70% find
23.50% perf
5.86% swapper
3.12% sshd
2.39% init
0.87% bash
0.86% sleep
0.59% dbus-daemon
0.25% hald
0.24% NetworkManager
0.19% hald-addon-rfki
0.15% openvpn
0.07% phy0
0.07% events/0
0.05% iwl3945
0.05% events/1
0.03% kondemand/0
[root@doppio linux-2.6-tip]#
The other modes work as well, modulo the problem with vmlinux:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object
# ........ ............... .................................
#
35.11% find ffffffff81002b5a
18.25% perf ffffffff8102235f
16.17% find libc-2.10.2.so
9.07% find find
5.80% swapper ffffffff8102235f
3.95% perf libc-2.10.2.so
2.33% init ffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k
1.35% find [e1000e]
0.68% sleep libc-2.10.2.so
acme@parisc:~/git/linux-2.6-tip$
And the lack of the right buildids:
acme@parisc:~/git/linux-2.6-tip$ perf report --sort comm,dso,symbol 2> /dev/null | head -15
# Samples: 293085637
#
# Overhead Command Shared Object Symbol
# ........ ............... ................................. ......
#
35.11% find ffffffff81002b5a [k] 0xffffffff81002b5a
18.25% perf ffffffff8102235f [k] 0xffffffff8102235f
16.17% find libc-2.10.2.so [.] 0x00000000045782
9.07% find find [.] 0x0000000000fb0e
5.80% swapper ffffffff8102235f [k] 0xffffffff8102235f
3.95% perf libc-2.10.2.so [.] 0x0000000007f398
2.33% init ffffffff810091b9 [k] 0xffffffff810091b9
1.65% sshd libcrypto.so.0.9.8k [.] 0x00000000105440
1.35% find [e1000e] [k] 0x00000000010948
0.68% sleep libc-2.10.2.so [.] 0x0000000011ad5b
acme@parisc:~/git/linux-2.6-tip$
But if we:
acme@parisc:~/git/linux-2.6-tip$ ls ~/.debug
ls: cannot access /home/acme/.debug: No such file or directory
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/lib64/libc-2.10.2.so/
acme@parisc:~/git/linux-2.6-tip$ scp doppio:.debug/lib64/libc-2.10.2.so/* ~/.debug/lib64/libc-2.10.2.so/
acme@doppio's password:
eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 100% 1783KB 714.7KB/s 00:02
acme@parisc:~/git/linux-2.6-tip$ mkdir -p ~/.debug/.build-id/eb
acme@parisc:~/git/linux-2.6-tip$ ln -s ../../lib64/libc-2.10.2.so/eb4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1 ~/.debug/.build-id/eb/4ec8fa8b2a5eb18cad173c92f27ed8887ed1c1
acme@parisc:~/git/linux-2.6-tip$ perf report --dsos libc-2.10.2.so 2> /dev/null
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
acme@parisc:~/git/linux-2.6-tip$
Which matches what we get on the source, F12, x86_64 machine:
[root@doppio linux-2.6-tip]# perf report --dsos libc-2.10.2.so
# dso: libc-2.10.2.so
# Samples: 64281170
#
# Overhead Command Symbol
# ........ ............... ......
#
14.98% perf [.] __GI_strcmp
12.30% find [.] __GI_memmove
9.25% find [.] _int_malloc
7.60% find [.] _IO_vfprintf_internal
6.10% find [.] _IO_new_file_xsputn
6.02% find [.] __GI_close
3.08% find [.] _IO_file_overflow_internal
3.08% find [.] malloc_consolidate
3.08% find [.] _int_free
3.08% find [.] __strchrnul
3.08% find [.] __getdents64
3.08% find [.] __write_nocancel
3.08% sleep [.] __GI__dl_addr
3.08% sshd [.] __libc_select
3.08% find [.] _IO_new_file_write
3.07% find [.] _IO_new_do_write
3.06% find [.] __GI___errno_location
3.05% find [.] __GI___libc_malloc
3.04% perf [.] __GI_memcpy
1.71% find [.] __fprintf_chk
1.29% bash [.] __gconv_transform_utf8_internal
0.79% dbus-daemon [.] __GI_strlen
#
# (For a higher level overview, try: perf report --sort comm,dso)
#
[root@doppio linux-2.6-tip]#
So I think this is really, really nice in that it demonstrates
the portability of perf.data files and the use of build-ids
accross such aliens worlds :-)
There are some things to fix tho, like the bitmap on the header,
but things are looking good.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frédéric Weisbecker <fweisbec@gmail.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
LKML-Reference: <1263478990-8200-2-git-send-email-acme@infradead.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-14 22:23:10 +08:00
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
int perf_session__create_kernel_maps(struct perf_session *session);
|
2010-03-12 07:12:44 +08:00
|
|
|
|
2012-08-02 06:31:00 +08:00
|
|
|
void perf_session__set_id_hdr_size(struct perf_session *session);
|
2010-04-02 12:59:15 +08:00
|
|
|
|
2010-04-28 08:17:50 +08:00
|
|
|
static inline
|
2013-11-06 02:32:36 +08:00
|
|
|
struct machine *perf_session__find_machine(struct perf_session *session, pid_t pid)
|
2010-04-28 08:17:50 +08:00
|
|
|
{
|
2013-11-06 02:32:36 +08:00
|
|
|
return machines__find(&session->machines, pid);
|
2010-04-28 08:17:50 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
static inline
|
2013-11-06 02:32:36 +08:00
|
|
|
struct machine *perf_session__findnew_machine(struct perf_session *session, pid_t pid)
|
2010-04-28 08:17:50 +08:00
|
|
|
{
|
2013-11-06 02:32:36 +08:00
|
|
|
return machines__findnew(&session->machines, pid);
|
2010-04-28 08:17:50 +08:00
|
|
|
}
|
|
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
struct thread *perf_session__findnew(struct perf_session *session, pid_t pid);
|
2015-12-09 10:11:23 +08:00
|
|
|
int perf_session__register_idle_thread(struct perf_session *session);
|
2015-09-30 09:45:26 +08:00
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
size_t perf_session__fprintf(struct perf_session *session, FILE *fp);
|
2011-11-28 17:56:39 +08:00
|
|
|
|
2013-11-06 02:32:36 +08:00
|
|
|
size_t perf_session__fprintf_dsos(struct perf_session *session, FILE *fp);
|
2010-04-28 08:22:44 +08:00
|
|
|
|
2012-12-07 20:53:58 +08:00
|
|
|
size_t perf_session__fprintf_dsos_buildid(struct perf_session *session, FILE *fp,
|
|
|
|
|
bool (fn)(struct dso *dso, int parm), int parm);
|
2010-05-14 21:36:42 +08:00
|
|
|
|
2021-04-27 09:37:15 +08:00
|
|
|
size_t perf_session__fprintf_nr_events(struct perf_session *session, FILE *fp,
|
|
|
|
|
bool skip_empty);
|
2011-01-21 23:46:41 +08:00
|
|
|
|
2019-07-21 19:23:51 +08:00
|
|
|
struct evsel *perf_session__find_first_evtype(struct perf_session *session,
|
2011-04-07 11:54:20 +08:00
|
|
|
unsigned int type);
|
|
|
|
|
|
2011-07-04 19:57:50 +08:00
|
|
|
int perf_session__cpu_bitmap(struct perf_session *session,
|
|
|
|
|
const char *cpu_list, unsigned long *cpu_bitmap);
|
|
|
|
|
|
perf tools: Make perf.data more self-descriptive (v8)
The goal of this patch is to include more information about the host
environment into the perf.data so it is more self-descriptive. Overtime,
profiles are captured on various machines and it becomes hard to track
what was recorded, on what machine and when.
This patch provides a way to solve this by extending the perf.data file
with basic information about the host machine. To add those extensions,
we leverage the feature bits capabilities of the perf.data format. The
change is backward compatible with existing perf.data files.
We define the following useful new extensions:
- HEADER_HOSTNAME: the hostname
- HEADER_OSRELEASE: the kernel release number
- HEADER_ARCH: the hw architecture
- HEADER_CPUDESC: generic CPU description
- HEADER_NRCPUS: number of online/avail cpus
- HEADER_CMDLINE: perf command line
- HEADER_VERSION: perf version
- HEADER_TOPOLOGY: cpu topology
- HEADER_EVENT_DESC: full event description (attrs)
- HEADER_CPUID: easy-to-parse low level CPU identication
The small granularity for the entries is to make it easier to extend
without breaking backward compatiblity. Many entries are provided as
ASCII strings.
Perf report/script have been modified to print the basic information as
easy-to-parse ASCII strings. Extended information about CPU and NUMA
topology may be requested with the -I option.
Thanks to David Ahern for reviewing and testing the many versions of
this patch.
$ perf report --stdio
# ========
# captured on : Mon Sep 26 15:22:14 2011
# hostname : quad
# os release : 3.1.0-rc4-tip
# perf version : 3.1.0-rc4
# arch : x86_64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
# cpuid : GenuineIntel,6,15,11
# total memory : 8105360 kB
# cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
...
$ perf report --stdio -I
# ========
# captured on : Mon Sep 26 15:22:14 2011
# hostname : quad
# os release : 3.1.0-rc4-tip
# perf version : 3.1.0-rc4
# arch : x86_64
# nrcpus online : 4
# nrcpus avail : 4
# cpudesc : Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz
# cpuid : GenuineIntel,6,15,11
# total memory : 8105360 kB
# cmdline : /home/eranian/perfmon/official/tip/build/tools/perf/perf record date
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 29, 30, 31,
# sibling cores : 0-3
# sibling threads : 0
# sibling threads : 1
# sibling threads : 2
# sibling threads : 3
# node0 meminfo : total = 8320608 kB, free = 7571024 kB
# node0 cpu list : 0-3
# ========
#
...
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Andi Kleen <ak@linux.intel.com>
Link: http://lkml.kernel.org/r/20110930134040.GA5575@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
[ committer notes: Use --show-info in the tools as was in the docs, rename
perf_header_fprintf_info to perf_file_section__fprintf_info, fixup
conflict with f69b64f7 "perf: Support setting the disassembler style" ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2011-09-30 21:40:40 +08:00
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void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
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2012-06-28 00:08:42 +08:00
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2019-07-21 19:23:51 +08:00
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struct evsel_str_handler;
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2012-06-28 00:08:42 +08:00
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#define perf_session__set_tracepoints_handlers(session, array) \
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2019-10-01 22:14:26 +08:00
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__evlist__set_tracepoints_handlers(session->evlist, array, ARRAY_SIZE(array))
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2013-09-18 03:34:28 +08:00
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extern volatile int session_done;
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locking/atomics: COCCINELLE/treewide: Convert trivial ACCESS_ONCE() patterns to READ_ONCE()/WRITE_ONCE()
Please do not apply this to mainline directly, instead please re-run the
coccinelle script shown below and apply its output.
For several reasons, it is desirable to use {READ,WRITE}_ONCE() in
preference to ACCESS_ONCE(), and new code is expected to use one of the
former. So far, there's been no reason to change most existing uses of
ACCESS_ONCE(), as these aren't harmful, and changing them results in
churn.
However, for some features, the read/write distinction is critical to
correct operation. To distinguish these cases, separate read/write
accessors must be used. This patch migrates (most) remaining
ACCESS_ONCE() instances to {READ,WRITE}_ONCE(), using the following
coccinelle script:
----
// Convert trivial ACCESS_ONCE() uses to equivalent READ_ONCE() and
// WRITE_ONCE()
// $ make coccicheck COCCI=/home/mark/once.cocci SPFLAGS="--include-headers" MODE=patch
virtual patch
@ depends on patch @
expression E1, E2;
@@
- ACCESS_ONCE(E1) = E2
+ WRITE_ONCE(E1, E2)
@ depends on patch @
expression E;
@@
- ACCESS_ONCE(E)
+ READ_ONCE(E)
----
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: davem@davemloft.net
Cc: linux-arch@vger.kernel.org
Cc: mpe@ellerman.id.au
Cc: shuah@kernel.org
Cc: snitzer@redhat.com
Cc: thor.thayer@linux.intel.com
Cc: tj@kernel.org
Cc: viro@zeniv.linux.org.uk
Cc: will.deacon@arm.com
Link: http://lkml.kernel.org/r/1508792849-3115-19-git-send-email-paulmck@linux.vnet.ibm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-10-24 05:07:29 +08:00
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#define session_done() READ_ONCE(session_done)
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2014-10-27 21:49:22 +08:00
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2014-10-27 21:49:23 +08:00
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int perf_session__deliver_synth_event(struct perf_session *session,
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union perf_event *event,
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2015-03-03 22:58:45 +08:00
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struct perf_sample *sample);
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2014-10-27 21:49:23 +08:00
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2018-09-13 20:54:03 +08:00
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int perf_event__process_id_index(struct perf_session *session,
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union perf_event *event);
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2014-10-27 21:49:22 +08:00
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2009-12-12 07:24:02 +08:00
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#endif /* __PERF_SESSION_H */
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