Commit Graph

6033 Commits

Author SHA1 Message Date
Igor Lubashev
e9a6882f26 perf event: Check ref_reloc_sym before using it
Check for ref_reloc_sym before using it instead of checking
symbol_conf.kptr_restrict and relying solely on that check.

Reported-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Igor Lubashev <ilubashe@akamai.com>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1566869956-7154-2-git-send-email-ilubashe@akamai.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-28 17:17:51 -03:00
Arnaldo Carvalho de Melo
74a1e863eb perf evsel: Rename perf_missing_features::bpf_event to ::bpf
No need for that _event suffix, do just like all the other meta events
and do away with that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lkml.kernel.org/n/tip-bvc83f380dva83wlg52yd10t@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:11 -03:00
Arnaldo Carvalho de Melo
3f604b5f61 perf tool: Rename perf_tool::bpf_event to bpf
No need for that _event suffix, do just like all the other meta event
handlers and suppress that suffix.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lkml.kernel.org/n/tip-03spzxtqafbabbbmnm7y4xfx@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:11 -03:00
Arnaldo Carvalho de Melo
6a1b359821 perf tools: Rename perf_event::bpf_event to perf_event::bpf
Just like all the other meta events, that extra _event suffix is just
redundant, ditch it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lkml.kernel.org/n/tip-505qwpaizq1k0t6pk13v1ibd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:11 -03:00
Arnaldo Carvalho de Melo
ebdba16e95 perf tools: Rename perf_event::ksymbol_event to perf_event::ksymbol
Just like all the other meta events, that extra _event suffix is just
redundant, ditch it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Song Liu <songliubraving@fb.com>
Link: https://lkml.kernel.org/n/tip-0q8b2xnfs17q0g523oej75s0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:11 -03:00
Arnaldo Carvalho de Melo
69d81f09e1 libperf: Rename the PERF_RECORD_ structs to have a "perf" suffix
Even more, to have a "perf_record_" prefix, so that they match the
PERF_RECORD_ enum they map to.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-qbabmcz2a0pkzt72liyuz3p8@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:11 -03:00
Jiri Olsa
b1fcd190bb libperf: Add PERF_RECORD_SAMPLE 'struct sample_event' to perf/event.h
Move the PERF_RECORD_SAMPLE event definition to libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-13-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
b1b5101422 libperf: Add PERF_RECORD_BPF_EVENT 'struct bpf_event' to perf/event.h
Move the PERF_RECORD_BPF_EVENT event definition to libperf's event.h.

In order to keep libperf simple, we switch 'u64/u32/u16/u8'
types used events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-12-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
f15e3c25a1 libperf: Add PERF_RECORD_KSYMBOL 'struct ksymbol_event' to perf/event.h
Move the PERF_RECORD_KSYMBOL event definition into libperf's event.h
header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_' to
ease up the reading and differentiate them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-11-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
003c66fec2 libperf: Add PERF_RECORD_THROTTLE 'struct throttle_event' to perf/event.h
Move the PERF_RECORD_THROTTLE event definition into libperf's event.h
header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values as stated
in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_' to
ease up the reading and differentiate them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-10-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
213a6c1d20 libperf: Add PERF_RECORD_READ 'struct read_event' to perf/event.h
Move the PERF_RECORD_READ event definition to libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_' to
ease up the reading and differentiate them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-9-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
a2e254d841 libperf: Add PERF_RECORD_LOST_SAMPLES 'struct lost_samples_event' to perf/event.h
Move the PERF_RECORD_LOST_SAMPLES event definition into libperf's
event.h header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_' to
ease up the reading and differentiate them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-8-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:10 -03:00
Jiri Olsa
5290ed6955 libperf: Add PERF_RECORD_LOST 'struct lost_event' to perf/event.h
Move the lost_event event definition to libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values as stated
in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_' to
ease up the reading and differentiate them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-7-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:09 -03:00
Jiri Olsa
bceb59b1f2 libperf: Add PERF_RECORD_FORK 'struct fork_event' to perf/event.h
Move the fork_event event definition into libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add and use new PRI_lu64 and PRI_lx64 macros for that.  Using extra '_'
to ease up the reading and differentiate them from standard PRI*64
macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:09 -03:00
Jiri Olsa
19d1765a3e libperf: Add PERF_RECORD_NAMESPACES 'struct namespaces_event' to perf/event.h
Move the namespaces_event event definition into libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:09 -03:00
Jiri Olsa
002dda32a8 libperf: Add PERF_RECORD_COMM 'struct comm_event' to perf/event.h
Moving comm_event event definition into libperf's event.h
header include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8'
types used events to their generic '__u*' versions.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:09 -03:00
Jiri Olsa
b66ced19c9 libperf: Add PERF_RECORD_MMAP2 'struct mmap2_event' to perf/event.h
Moving mmap2_event event definition into libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values
as stated in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Adding and using new PRI_lu64 and PRI_lx64 macros to be used for
that.  Using extra '_' to ease up the reading and differentiate
them from standard PRI*64 macros.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/n/tip-ufs9ityr5w2xqwtd5w3p6dm4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:39:09 -03:00
Jiri Olsa
1345e2ee87 libperf: Add PERF_RECORD_MMAP 'struct mmap_event' to perf/event.h
Move the mmap_event event definition to libperf's event.h header
include.

In order to keep libperf simple, we switch 'u64/u32/u16/u8' types used
events to their generic '__u*' versions.

Perf added 'u*' types mainly to ease up printing __u64 values as stated
in the linux/types.h comment:

  /*
   * We define u64 as uint64_t for every architecture
   * so that we can print it with "%"PRIx64 without getting warnings.
   *
   * typedef __u64 u64;
   * typedef __s64 s64;
   */

Add  and use new PRI_lu64 and PRI_lx64 macros for that.  Use extra '_'
to ease up reading and differentiate them from standard PRI*64 macros.

Committer notes:

Fixup the PRI_l[ux]64 macros on 32-bit arches, conditionally defining it
with that extra 'l' modifier only on arches where __u64 is long long,
leaving it aside on 32-bit arches.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190825181752.722-2-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 19:38:04 -03:00
Andi Kleen
3dab6ac080 perf report: Fix --ns time sort key output
If the user specified --ns, the column to print the sort time stamp
wasn't wide enough to actually print the full nanoseconds.

Widen the time key column width when --ns is specified.

Before:

  % perf record -a sleep 1
  % perf report --sort time,overhead,symbol --stdio --ns
  ...
       2.39%  187851.10000  [k] smp_call_function_single   -      -
       1.53%  187851.10000  [k] intel_idle                 -      -
       0.59%  187851.10000  [.] __wcscmp_ifunc             -      -
       0.33%  187851.10000  [.] 0000000000000000           -      -
       0.28%  187851.10000  [k] cpuidle_enter_state        -      -

After:

  % perf report --sort time,overhead,symbol --stdio --ns
  ...
       2.39%  187851.100000000  [k] smp_call_function_single   -      -
       1.53%  187851.100000000  [k] intel_idle                 -      -
       0.59%  187851.100000000  [.] __wcscmp_ifunc             -      -
       0.33%  187851.100000000  [.] 0000000000000000           -      -
       0.28%  187851.100000000  [k] cpuidle_enter_state        -      -

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190823210338.12360-2-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Andi Kleen
092804ae09 perf report: Use timestamp__scnprintf_nsec() for time sort key
Use timestamp__scnprintf_nsec() to print nanoseconds for the time sort
key, instead of open coding.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Link: http://lkml.kernel.org/r/20190823210338.12360-1-andi@firstfloor.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Souptick Joarder
b4de344b25 perf tools: Remove duplicate headers
Removed headers which are included twice.

Signed-off-by: Souptick Joarder <jrdr.linux@gmail.com>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1566663319-4283-1-git-send-email-jrdr.linux@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Arnaldo Carvalho de Melo
185bcb92c8 perf sort: Remove needless headers from sort.h, provide fwd struct decls
Reducing the includes hell a bit more, speeding up the build and
avoiding needless rebuilds when just one of those files gets updated.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-u63el2vqsovsmnhebx1rcixo@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Arnaldo Carvalho de Melo
97b9d866a6 perf srcline: Add missing srcline.h header to files needing its defs
When srcline was introduced it wrongly added the include to util/sort.h,
even with that header not needing the definitions it provides, fix it by
adding it to the places that need it as a pre patch to remove srcline.h
from sort.h.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-shuebppedtye8hrgxk15qe3x@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Arnaldo Carvalho de Melo
125009026b perf cacheline: Move cacheline related routines to separate files
To disentangle util/sort.h a bit more.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-6kbf2cauas06rbqp15pyter5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:29 -03:00
Arnaldo Carvalho de Melo
aeb00b1aea perf record: Move record_opts and other record decls out of perf.h
And into a separate util/record.h, to better isolate things and make
sure that those who use record_opts and the other moved declarations
are explicitly including the necessary header.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-31q8mei1qkh74qvkl9nwidfq@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 11:58:22 -03:00
Arnaldo Carvalho de Melo
38b7b678fe perf stat: Remove needless headers from stat.h
Just a forward declaration for 'struct timespec' is needed, ditch the
rest.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-6shdqw801oqe7ax6r307k27r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 08:36:25 -03:00
Arnaldo Carvalho de Melo
29e331176d perf cpumap: No need to include perf.h, ditch it
From a quick look this was never needed and just polluted the build,
needlessly making things including cpumap.h to be rebuild if perf.h or
anything it includes gets changed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-x10p8slllqkn3fc3bntjx3n0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-26 08:36:25 -03:00
Jiri Olsa
a2f354e3ab libperf: Add perf_thread_map__nr/perf_thread_map__pid functions
So it's part of libperf library as basic functions operating on
perf_thread_map objects.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190822111141.25823-6-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
5e51b0bb24 perf cpumap: Remove needless includes from cpumap.h
The util/cpumap.h file doesn't use anything in refcount.h not in
debug.h, it needs just a forward reference to 'struct cpu_map_data',
that is defined in util/event.h and cpumap.h was getting indirectly via,
of all things, debug.h

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-mtjww98yptt4ppo6g2blavg5@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
f7004f5990 perf evsel: Switch to libperf's cpumap.h
We don't need what is in perf's util/cpumap.h, just the struct cpu_map
that is in libperf's internal/cpumap.h file to cover this one case:

  tools/perf/util/evsel.h:215:27: error: dereferencing pointer to incomplete type ‘struct perf_cpu_map’
  215 |  return evsel__cpus(evsel)->nr;

So switch to libperf's cpumap.h and add some missing struct foward
declarations and include sys/types.h to get pid_t.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-ufjkpohijti05ggk69s91ktf@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
43cc5d5ecb perf evsel: util/evsel.h needs stdio.h as it uses FILE
And it was getting it by luck from util/cpumap.h that shouldn't be
included in util/evsel.h as it only needs what is in libperf, i.e.
struct cpu_map, that is in internal/cpumap.h, so add stdio.h before
we fix that.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-2ywx5sl031tj3zske7c7edgv@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
a06b7f422d perf evsel: Remove needless stddef.h from util/evsel.h
We added it in 07ac002f2f ("perf evsel: Introduce is_group_member
method") but we already ditched that function, and there was nothing
else left that needed NULL nor anything else from stddef.h, ditch it.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-1zy0xfsy61x81f3fpyx5znco@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
ddee688a83 perf evsel: Remove needless counts.h header from util/evsel.h
We need only a struct forward declaration, so prune the header
dependency tree a bit more.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-oqvgf04w4ku8xasrz79zquim@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
69714a4e39 perf evsel: Add missing perf/evsel.h header in util/evsel.h
Since util/evsel.h uses perf_evsel__cpus() that has its prototype in
libperf's perf/evsel.h file, we need it explicitely included.

This was working by luck as util/evsel.h includes counts.h, but that is
not necessary, just some forward declarations, so, before we remove
counts.h from util/evsel.h, add what is realli needed.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-nfb9e0t4jm9zhvr0q86hc29d@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
430482c2e3 perf scripting python: Add missing counts.h header
It is getting this via evsel.h, that don't strictly need counts.h, just
forward declarations for some structs, so add it here before we remove
it from there.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-6bxk3ltwkw91qcld2ot86bgg@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
bfc49182c6 perf stat: Add missing counts.h
It is getting this via evsel.h, that don't strictly need counts.h, just
forward declarations for some structs, so add it here before we remove
it from there.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-jwcbm9gv9llloe3he5qkdefs@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:57 -03:00
Arnaldo Carvalho de Melo
e14e5497d5 perf evlist: Add missing xyarray.h header
It gets it very indirectly, via evsel.h -> counts.h, and since counts.h
doesn't need xyarray.h at all, add it here before we remove it there.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-hkizv6gojwfklj9ezaiiztll@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:56 -03:00
Arnaldo Carvalho de Melo
964f384989 perf bpf: Add missing xyarray.h header
This was being obtained indirectly via evsel.h -> counts.h, since we
don't need xyarray in counts.h, we need to add it here explicitely
before removing it from counts.h.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-jirmxg527i82yz31bwad9we7@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:56 -03:00
Arnaldo Carvalho de Melo
2d64ae9b85 perf counts: Add missing headers needed for types used
We get these by sheer luck, since we're cleaning unneeded headers use,
this needs to be done first to avoid breakage down the line.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-p7bncbi53t4p2kobkbmu86a4@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:56 -03:00
Arnaldo Carvalho de Melo
7646602401 perf evsel: Move xyarray.h from evsel.c to evsel.h to reduce include dep tree
All we need in util/evsel.h is the foward declaration of 'struct
xyarray', not the internal/xyarray.h, that can be moved to util/evsel.c
and then we reduce the header dependency tree.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-wwqce6ixwcyq6yzx3ljrdm80@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:56 -03:00
Arnaldo Carvalho de Melo
0b8026e8fb perf metricgroup: Remove needless includes from metricgroup.h
There we need just some struct forward declarations, do that instead and
add the includes needed by metricgroup.c.

That should help with needless rebuilds when changing the removed
headers from metricgroup.h.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-1fkskjws6imir2hhztqhdyb0@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 17:16:56 -03:00
Jiri Olsa
b4df75de3b libperf: Move perf's cpu_map__idx() to perf_cpu_map__idx()
As an internal function that will be used by both perf and libperf, but
is not exported at this point.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190822111141.25823-5-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 11:18:45 -03:00
Jiri Olsa
315c0a1f0c libperf: Move perf's cpu_map__empty() to perf_cpu_map__empty()
So it's part of the libperf library as one of basic functions operating
on the perf_cpu_map class.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190822111141.25823-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 11:17:03 -03:00
Jiri Olsa
6549cd8f2c perf tools: Use perf_cpu_map__nr instead of cpu_map__nr
Switch the rest of the perf code to use libperf's perf_cpu_map__nr(),
which is the same as current cpu_map__nr() and remove the cpu_map__nr()
function.

Link: http://lkml.kernel.org/n/tip-6e0guy75clis7nm0xpuz9fga@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190822111141.25823-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-22 11:14:54 -03:00
Leo Yan
a4973d8f7b perf cs-etm: Support sample flags 'insn' and 'insnlen'
The synthetic branch and instruction samples are missed to set
instruction related info, thus the perf tool fails to display samples
with flags '-F,+insn,+insnlen'.

The CoreSight trace decoder provides sufficient information to decide
the instruction size based on the ISA type: A64/A32 instructions are
32-bit size, but one exception is the T32 instruction size, which might
be 32-bit or 16-bit.

This patch handles these cases and it reads the instruction values from
DSO file; thus can support the flags '-F,+insn,+insnlen'.

Before:

  # perf script -F,insn,insnlen,ip,sym
                0 [unknown] ilen: 0
     ffff97174044 _start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0
     ffff97174938 _dl_start ilen: 0

  [...]

After:

  # perf script -F,insn,insnlen,ip,sym
                0 [unknown] ilen: 0
     ffff97174044 _start ilen: 4 insn: 2f 02 00 94
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54
     ffff97174938 _dl_start ilen: 4 insn: c1 ff ff 54

  [...]

Signed-off-by: Leo Yan <leo.yan@linaro.org>
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Robert Walker <robert.walker@arm.com>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: coresight@lists.linaro.org
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/20190815082854.18191-1-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-20 12:20:52 -03:00
Alexey Budankov
d2720c3dad perf report: Dump LBR callstack data by -D jointly with thread stack
Make perf report -D command print captured LBR callstack chain when it is
collected together with raw thread stack data:

  2752673087247083 0x5d10 [0x548]: PERF_RECORD_SAMPLE(IP, 0x4002): 5841/5841: 0x40121f period: 1543862 addr: 0
  ... FP chain: nr:0
  ... branch callstack: nr:3
  .....  0: 00000000004011d0
  .....  1: 00007f393c388411
  .....  2: 0000000000401098
  ... user regs: mask 0xff0fff ABI 64-bit
  .... AX    0x34e7
  .... BX    0x7fff5f6dd3c0
  .... CX    0xffffffff
  .... DX    0x34e6
  .... SI    0x7f393c5268d0
  .... DI    0x0
  .... BP    0x401260
  .... SP    0x7fff5f6dd3c0
  .... IP    0x40121f
  .... FLAGS 0x29f
  .... CS    0x33
  .... SS    0x2b
  .... R8    0x7f393c526800
  .... R9    0x7f393c525da0
  .... R10   0xfffffffffffff70a
  .... R11   0x246
  .... R12   0x401070
  .... R13   0x7fff5f6ddcb0
  .... R14   0x0
  .... R15   0x0
  ... ustack: size 1024, offset 0x130
   . data_src: 0x5080021
   ... thread: stack_test:5841
   ...... dso: /root/abudanko/stacks/stack_test

Committer testing:

  # perf record -g --call-graph dwarf,1024 -j stack,u ls > /dev/null
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.042 MB perf.data (10 samples) ]
  #

Before:

  # perf report -D |& grep PERF_RECORD_SAMPLE -A28 | tail -29
  67538909824483 0xa7a0 [0x560]: PERF_RECORD_SAMPLE(IP, 0x4002): 9721/9721: 0x7f441b2b1e20 period: 1376095 addr: 0
  ... FP chain: nr:0
  ... user regs: mask 0xff0fff ABI 64-bit
  .... AX    0x7f441b2b1000
  .... BX    0x7f441b55b970
  .... CX    0x7fff6e2db218
  .... DX    0x7fff6e2db218
  .... SI    0x7fff6e2db208
  .... DI    0x1
  .... BP    0x1
  .... SP    0x7fff6e2db178
  .... IP    0x7f441b2b1e20
  .... FLAGS 0x20a
  .... CS    0x33
  .... SS    0x2b
  .... R8    0x1
  .... R9    0x7f441b371c18
  .... R10   0x7f441b5a5f10
  .... R11   0x202
  .... R12   0x7fff6e2db208
  .... R13   0x7fff6e2db218
  .... R14   0x7f441b5a7150
  .... R15   0x0
  ... ustack: size 1024, offset 0x148
   . data_src: 0x5080021
   ... thread: ls:9721
   ...... dso: /usr/lib64/libpthread-2.29.so

  0xad00 [0x60]: event: 10
  #

After:

  # perf report -D |& grep PERF_RECORD_SAMPLE -A31 | tail -32
  67538909824483 0xa7a0 [0x560]: PERF_RECORD_SAMPLE(IP, 0x4002): 9721/9721: 0x7f441b2b1e20 period: 1376095 addr: 0
  ... FP chain: nr:0
  ... branch callstack: nr:4
  .....  0: 00007f441b2b1e20
  .....  1: 00007f441b58af1a
  .....  2: 00007f441b58b0e1
  .....  3: 00007f441b57c145
  ... user regs: mask 0xff0fff ABI 64-bit
  .... AX    0x7f441b2b1000
  .... BX    0x7f441b55b970
  .... CX    0x7fff6e2db218
  .... DX    0x7fff6e2db218
  .... SI    0x7fff6e2db208
  .... DI    0x1
  .... BP    0x1
  .... SP    0x7fff6e2db178
  .... IP    0x7f441b2b1e20
  .... FLAGS 0x20a
  .... CS    0x33
  .... SS    0x2b
  .... R8    0x1
  .... R9    0x7f441b371c18
  .... R10   0x7f441b5a5f10
  .... R11   0x202
  .... R12   0x7fff6e2db208
  .... R13   0x7fff6e2db218
  .... R14   0x7f441b5a7150
  .... R15   0x0
  ... ustack: size 1024, offset 0x148
   . data_src: 0x5080021
   ... thread: ls:9721
   ...... dso: /usr/lib64/libpthread-2.29.so
  #

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
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: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/aa82e5dd-def2-0ca8-a064-db9e2e8ad076@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-20 12:19:44 -03:00
Alexey Budankov
2566349648 perf record: Enable LBR callstack capture jointly with thread stack
Enable '-j stack' applicability together with '--call-graph dwarf'
option so thread stack data and LBR call stack could be captured
jointly:

  $ perf record -g --call-graph dwarf,1024 -j stack,u -- stack_test

Collected LBR call stack can be used to augment DWARF call stack
calculated from the raw thread stack data and to provide more
comprehensive call stack information for cases when collected SIZE is
not enough to cover complete thread stack.

Such cases are typical for workloads that allocate large arrays of data
on its threads stacks or the possible SIZE to collect can't be large
enough due to workload nature or system configuration and this is where
hardware captured LBR call stacks can provide missing stack frames.
Possible DWARF plus LBR call stacks consolidation algorithm description
follows.

With this patch set perf report command UI currently ignores collected
LBR call stack data and still provides DWARF based call stacks
information.

  ===========================================================================

  Overview:

   Legend:

   THS - thread stack
   CTX - thread register context
   SWS - software stack
   SSF - skipped stack frames
   PSS - Perf sample stack

   ip,sp,bp - HW registers values
   d        - allocated stack regions
   kip      - ip address in the kernel space
   K        - captured thread stack size

        THS

       -----
       |   |<-stack bottom
        ...
       |---|
       |ip4|
       |---|         PSS = SWS(THS(K))
       |   |
   --> |   |
   |   |d3 |                  user/
   |   |---|         user PSS kernel PSS
   |   |ip3|         ------   ------
   |   |---|         |SSF |   |SSF |
   |   |   |          ....     ....
   |   |   |         ------   ------
   |   |d2 |         | -1 |   | -1 |
       |---|   user  ------   ------
   K   |ip2|   CTX   |ip3 |   |ip3 |
       |---|         |----|   |----|
   |   |d1 |   ...   |ip2 | , |ip2 |
   |   |---|  |---|  |----|   |----|
   |   |ip1|  |bp0|  |ip1 |   |ip1 |
   |   |---|  |---|  |----|   |----|
   |   |   |  |ip0|->|ip0 |   |ip0 |<-user stack top
   |   |   |  |---|  ------   ------
   |   |   |<-|sp0|<-stack    |kip0|<-kernel stack bottom
   --> -----  -----   top     |----|
                              |kip1|
                              |----|
		              |kip2|
		              |----|
                               ....
			      |    |<-kernel stack top
                              ------

  Algorithm details:

   Legend:

   HWS - hardware stack
   K-SWS - kernel software stack

			 BRANCH
			 TABLE

		 HWS      ip   ip
			  from to
		 ------  -----------
		 |ip7`|  |ip7`|    |
		 |----|  |----|----|
		 |ip6`|  |ip6`|    |
	user PSS |----|  |----|----|
		 |ip5`|  |ip5`|    |
	------   |----|  |----|----|
	| -1 |   |ip4`|  |ip4`|    |
	------   |----|  |----|----|
	|ip3 |~~~|ip3`|  |ip3`|    |
	|----|   |----|  |----|----|
	|ip2 |~~~|ip2`|  |ip2`|    |
	|----| 	 |----|  |----|----|
	|ip1 |~~~|ip1`|  |ip1`|ip0`|
	|----| 	 |----|  -----------
	|ip0 |~~~|ip0`|<---------'
	------   ------

	1. if (sym(ipj) == sym(ipj`)), j=0-3 ===> user PSS
	2. ipj`                      , j=4-7 ===> user PSS

  Augmented PSS = A_SWS(SWS(THS(K)), HWS):

	         user/
       user PSS  kernel PSS

	------   ------
	|ip7`|   |ip7`|<-user PSS bottom
	|----|   |----|
	|ip6`|   |ip6`|
	|----|   |----|
    HWS	|ip5`|   |ip5`|
	|----|   |----|
	|ip4`|   |ip4`|
	------   ------
	|ip3 |   |ip3 |
	|----|   |----|
    SWS |ip2 |   |ip2 |
	|----|   |----|
	|ip1 |   |ip1 |
	|----|   |----|
	|ip0 |   |ip0 |<-user PSS top
	------   ------
		 |kip0|<-kernel PSS bottom
		 |----|
		 |kip1|
	   K-SWS |----|
		 |kip2|
		 |----|
		 |kip3|<-kernel PSS top
		 ------

                  APSS

Committer testing:

Before:

  # perf record -g --call-graph dwarf,1024 -j stack,u ls > /dev/null
  unknown branch filter stack, check man page

   Usage: perf record [<options>] [<command>]
      or: perf record [<options>] -- <command> [<options>]

      -j, --branch-filter <branch filter mask>
                            branch stack filter modes
  # perf record -g --call-graph dwarf,1024 -j u ls > /dev/null
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.054 MB perf.data (12 samples) ]
  # perf evlist -v
  cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CALLCHAIN|PERIOD|BRANCH_STACK|REGS_USER|STACK_USER|DATA_SRC, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, mmap_data: 1, sample_id_all: 1, exclude_guest: 1, exclude_callchain_user: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, branch_sample_type: ANY, sample_regs_user: 0xff0fff, sample_stack_user: 1024
   #

After:

  # perf record -g --call-graph dwarf,1024 -j stack,u ls > /dev/null
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.044 MB perf.data (11 samples) ]
  [root@quaco ~]# perf evlist -v
  cycles: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|ADDR|CALLCHAIN|PERIOD|BRANCH_STACK|REGS_USER|STACK_USER|DATA_SRC, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, mmap_data: 1, sample_id_all: 1, exclude_guest: 1, exclude_callchain_user: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, branch_sample_type: USER|CALL_STACK, sample_regs_user: 0xff0fff, sample_stack_user: 1024
  #

Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com>
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: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/e9e00090-66fb-d2a4-c90f-1d12344f7788@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-20 12:18:58 -03:00
Adrian Hunter
3c84e65a53 perf evsel: Add comment for 'idx' member in 'struct perf_sample_id
The 'idx' member was added as preparation for AUX area sampling. Add a
comment to describe why.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/83ff264f-84c3-5372-8976-dd9293d20c6f@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-20 12:17:45 -03:00
John Keeping
e2736219e6 perf unwind: Remove unnecessary test
If dwarf_callchain_users is false, then unwind__prepare_access() will
not set unwind_libunwind_ops so the remaining test here is sufficient.

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: john keeping <john@metanate.com>
Link: http://lkml.kernel.org/r/20190815100146.28842-3-john@metanate.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-16 12:30:14 -03:00
John Keeping
e8ba2906f6 perf unwind: Fix libunwind when tid != pid
Commit e5adfc3e7e ("perf map: Synthesize maps only for thread group
leader") changed the recording side so that we no longer get mmap events
for threads other than the thread group leader (when synthesising these
events for threads which exist before perf is started).

When a file recorded after this change is loaded, the lack of mmap
records mean that unwinding is not set up for any other threads.

This can be seen in a simple record/report scenario:

	perf record --call-graph=dwarf -t $TID
	perf report

If $TID is a process ID then the report will show call graphs, but if
$TID is a secondary thread the output is as if --call-graph=none was
specified.

Following the rationale in that commit, move the libunwind fields into
struct map_groups and update the libunwind functions to take this
instead of the struct thread.  This is only required for
unwind__finish_access which must now be called from map_groups__delete
and the others are changed for symmetry.

Note that unwind__get_entries keeps the thread argument since it is
required for symbol lookup and the libdw unwind provider uses the thread
ID.

Signed-off-by: John Keeping <john@metanate.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: e5adfc3e7e ("perf map: Synthesize maps only for thread group leader")
Link: http://lkml.kernel.org/r/20190815100146.28842-2-john@metanate.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-08-16 12:25:57 -03:00