提交 · 58683600dfe377c883eb8217b5a9bfcfe231b3ff · openeuler / Kernel

07 1月, 2016 19 次提交

perf build: Use FEATURE-DUMP in bpf subproject · 58683600

由 Jiri Olsa 提交于 12月 23, 2015

Using FEATURE-DUMP in bpf subproject for features detection in case bpf
is built via perf. Keeping the current features detection otherwise.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NWang Nan <wangnan0@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama <pi3orama@163.com>
Link: http://lkml.kernel.org/r/1450893514-9158-6-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

58683600

tools build feature: Use value assignment form for FEATURE-DUMP file · 936d120d

由 Jiri Olsa 提交于 12月 23, 2015

Changing the contents of the FEATURE-DUMP file, so it looks like:

  feature-backtrace=1
  feature-dwarf=0
  feature-fortify-source=1
  feature-sync-compare-and-swap=0

This way it could get included in sub projects, so they won't be forced
to redo features detection.

Also now storing the complete set of features.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NWang Nan <wangnan0@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama <pi3orama@163.com>
Link: http://lkml.kernel.org/r/1450893514-9158-5-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

936d120d

tools build feature: Introduce feature_assign macro · c6a5f88f

由 Jiri Olsa 提交于 12月 23, 2015

The feature_assign macro generates feature value
assignment for name, like:

  $(call feature_assign,dwarf) == feature-dwarf=1

This will be used more in following patches.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NWang Nan <wangnan0@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama <pi3orama@163.com>
Link: http://lkml.kernel.org/r/1450893514-9158-4-git-send-email-jolsa@kernel.org
[ Rename it to feature_assign, the original shorter name was misleading, to say the least ;-) ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

c6a5f88f

tools build feature: Move dwarf post unwind choice output into perf · 76ee2ff3

由 Jiri Olsa 提交于 12月 23, 2015

We decide what dwarf unwind to choose way after the Makefile.feature
makefile is included. The $(dwarf-post-unwind) is not even set at that
time. For the same reason it was never included in FEATURE-DUMP file.

Moving it into perf VF=1 verbose display.

  $ make VF=1
    BUILD:   Doing 'make -j4' parallel build
  Auto-detecting system features:
  ...                         dwarf: [ on  ]
  ...
  ...                 LIBUNWIND_DIR:
  ...                     LIBDW_DIR:
  ...     DWARF post unwind library: libunwind
  ...
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NWang Nan <wangnan0@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama <pi3orama@163.com>
Link: http://lkml.kernel.org/r/1450893514-9158-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

76ee2ff3

tools build feature: Fix feature_check_display_code typo · d0018b49

由 Jiri Olsa 提交于 12月 23, 2015

This function is cursed.. ;-)
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NWang Nan <wangnan0@huawei.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama <pi3orama@163.com>
Link: http://lkml.kernel.org/r/1450893514-9158-2-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

d0018b49

perf tools: Make 'trace' or 'trace_fields' sort key default for tracepoint events · d49dadea

由 Namhyung Kim 提交于 12月 23, 2015

When an evlist contains tracepoint events only, use 'trace' sort key as
default.  If --raw-trace option was given, use 'trace_fields' instead.
This will make users more convenient to see trace result.
Suggested-and-Acked-by: NJiri Olsa <jolsa@kernel.org>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-14-git-send-email-namhyung@kernel.org
[ Check evlist in get_default_sort_order() fixing a segfault in 'perf test hists' reported by Jiri Olsa ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

d49dadea

perf tools: Add 'trace_fields' dynamic sort key · 2e422fd1

由 Namhyung Kim 提交于 12月 23, 2015

The 'trace_fields' sort key is similar as 'trace' sort key, but it shows
each fields separately.  Each event will get different columns as their
fields.

  $ perf report -s trace_fields --stdio
  # To display the perf.data header info, please use --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 20K of event 'kmem:kmalloc'
  # Event count (approx.): 20533
  #
  # Overhead  Command           call_site                 ptr  bytes_req  bytes_alloc            gfp_flags
  # ........  .......  ..................  ..................  .........  ...........  ...................
  #
      99.89%  perf       ffffffffa01d4396  0xffff8803ffb79720         96           96    GFP_NOFS|GFP_ZERO
       0.06%  sleep      ffffffff8114e1cd  0xffff8803d228a000       4096         4096           GFP_KERNEL
       0.03%  perf       ffffffff811d6ae6  0xffff8803f7678f00        240          256  GFP_KERNEL|GFP_ZERO
       0.00%  perf       ffffffff812263c1  0xffff880406172380        128          128           GFP_KERNEL
       0.00%  perf       ffffffff812264b9  0xffff8803ffac1600        504          512           GFP_KERNEL
       0.00%  perf       ffffffff81226634  0xffff880401dc5280         28           32           GFP_KERNEL
       0.00%  sleep      ffffffff81226da9  0xffff8803ffac3a00        392          512           GFP_KERNEL

  # Samples: 20K of event 'kmem:kfree'
  # Event count (approx.): 20597
  #
  # Overhead           call_site                 ptr
  # ........  ..................  ..................
  #
      99.58%    ffffffffa01d85ad  0xffff8803ffb79720
       0.07%    ffffffff81443f5c  0xffff8803f7669400
       0.02%    ffffffff811d5753  0xffff8803f7678f00
       0.01%    ffffffff81443f5c  0xffff8803f766be00
       0.01%    ffffffff8114e359  0xffff8803d228a000
       0.01%    ffffffff81443f5c  0xffff8800d156dc00
       0.01%    ffffffff81443f5c  0xffff8803f7669400
       0.01%    ffffffff8114e359  0xffff8803d228a000
       0.01%    ffffffff8114e359  0xffff8803d228a000
       0.01%    ffffffff8114e359  0xffff8803d228a000
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-13-git-send-email-namhyung@kernel.org
[ Combined with "perf tools: Fix segfault when using -s trace_fields" ]
Link: http://lkml.kernel.org/r/1451991518-25673-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

2e422fd1

perf tools: Skip dynamic fields not defined for current event · 361459f1

由 Namhyung Kim 提交于 12月 23, 2015

When there are multiple events, each dynamic sort key is defined just
for one event.  In this case other events will always show "N/A" for
those fields.  But they are meaningless and consume precious screen
width.

Let's skip those undefined dynamic fields.

  $ perf record -e kmem:kmalloc,kmem:kfree -a sleep 1

  $ perf report -s 'comm,kmalloc.*' --stdio
  # To display the perf.data header info, please use --header/--header-only options.
  #
  #
  # Total Lost Samples: 0
  #
  # Samples: 20K of event 'kmem:kmalloc'
  # Event count (approx.): 20533
  #
  # Overhead  Command           call_site                 ptr  bytes_req  bytes_alloc            gfp_flags
  # ........  .......  ..................  ..................  .........  ...........  ...................
  #
      99.89%  perf       ffffffffa01d4396  0xffff8803ffb79720         96           96    GFP_NOFS|GFP_ZERO
       0.06%  sleep      ffffffff8114e1cd  0xffff8803d228a000       4096         4096           GFP_KERNEL
       0.03%  perf       ffffffff811d6ae6  0xffff8803f7678f00        240          256  GFP_KERNEL|GFP_ZERO
       0.00%  perf       ffffffff812263c1  0xffff880406172380        128          128           GFP_KERNEL
       0.00%  perf       ffffffff812264b9  0xffff8803ffac1600        504          512           GFP_KERNEL
       0.00%  perf       ffffffff81226634  0xffff880401dc5280         28           32           GFP_KERNEL
       0.00%  sleep      ffffffff81226da9  0xffff8803ffac3a00        392          512           GFP_KERNEL

  # Samples: 20K of event 'kmem:kfree'
  # Event count (approx.): 20597
  #
  # Overhead  Command
  # ........  ..............
  #
      99.63%  perf
       0.14%  sleep
       0.11%  irq/36-iwlwifi
       0.11%  kworker/u16:0
       0.01%  Xorg
       0.00%  firefox
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-12-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

361459f1

perf tools: Support '<event>.*' dynamic sort key · 3b099bf5

由 Namhyung Kim 提交于 12月 23, 2015

Support '*' character for field name to add all (non-common) fields as
sort keys easily.

  $ perf report -s 'switch.*' --stdio
  ...
  # Overhead    prev_comm  prev_pid   prev_prio  prev_state     next_comm  next_pid  next_prio
  # ........  ...........  .........  .........  ..........  ............  ........  .........
  #
       3.82%    swapper/0         0         120           0   netctl-auto     18711        120
       3.75%  netctl-auto     18711         120           1     swapper/0         0        120
       2.24%    swapper/1         0         120           0   netctl-auto     18709        120
       2.24%  netctl-auto     18709         120           1     swapper/1         0        120
       1.80%    swapper/2         0         120           0   rcu_preempt         7        120
       1.80%    swapper/2         0         120           0   netctl-auto     18711        120
       1.80%  rcu_preempt         7         120           1     swapper/2         0        120
       1.80%  netctl-auto     18711         120           1     swapper/2         0        120
  ...
Suggested-and-acked-by: NJiri Olsa <jolsa@redhat.com>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-11-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

3b099bf5

perf tools: Support shortcuts for events in dynamic sort keys · 5d0cff93

由 Namhyung Kim 提交于 12月 23, 2015

The dynamic sort key requires event name but specifying full event name
is rather inconvenient.  This patch adds more ways to identify the event
in a more compact way.

  1. If session has just one event, event name can be omitted.
  2. Events can be accessed by index preceded by a percent sign.
  3. A part of the name can be used, if it's not ambiguous.  The partial
     name should not contain ':' in it.
  4. Full system + event name is still used, it should contain ':'.

So in the below example all does same thing:

  $ perf record -e sched:sched_switch -a sleep 1

  $ perf report -s next_pid,next_comm
  $ perf report -s %1.next_pid,%1.next_comm
  $ perf report -s switch.next_pid,switch.next_comm
  $ perf report -s sched:sched_switch.next_pid,sched:sched_switch.next_comm
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-10-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

5d0cff93

perf report/top: Add --raw-trace option · 053a3989

由 Namhyung Kim 提交于 12月 23, 2015

The --raw-trace option allows disabling pretty printing by the event's
print_fmt or plugin.  Besides that, each dynamic sort key now can
receive a 'raw' suffix separated by '/' to ask for the raw trace of a
specific field.

  $ perf report -s comm,kmem:kmalloc.gfp_flags
  ...
  # Overhead  Command            gfp_flags
  # ........  .......  ...................
  #
      99.89%  perf       GFP_NOFS|GFP_ZERO
       0.06%  sleep             GFP_KERNEL
       0.03%  perf     GFP_KERNEL|GFP_ZERO
       0.01%  perf              GFP_KERNEL

Now

  $ perf report -s comm,kmem:kmalloc.gfp_flags --raw-trace
or
  $ perf report -s comm,kmem:kmalloc.gfp_flags/raw
  ...
  # Overhead  Command   gfp_flags
  # ........  .......  ..........
  #
      99.89%  perf          32848
       0.06%  sleep           208
       0.03%  perf          32976
       0.01%  perf            208
Suggested-and-Acked-by: NJiri Olsa <jolsa@redhat.com>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-9-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

053a3989

perf tools: Add 'trace' sort key · a34bb6a0

由 Namhyung Kim 提交于 12月 23, 2015

The 'trace' sort key is to show tracepoint event output using either
print fmt or plugin.  For example sched_switch event (using plugin) will
show output like below:

  # perf record -e sched:sched_switch -a usleep 10
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.197 MB perf.data (69 samples) ]
  #

  $ perf report -s trace --stdio
  ...
  # Overhead  Trace output
  # ........  ...................................................
  #
       9.48%  swapper/0:0 [120] R ==> transmission-gt:17773 [120]
       9.48%  transmission-gt:17773 [120] S ==> swapper/0:0 [120]
       9.04%  swapper/2:0 [120] R ==> transmission-gt:17773 [120]
       8.92%  transmission-gt:17773 [120] S ==> swapper/2:0 [120]
       5.25%  swapper/0:0 [120] R ==> kworker/0:1H:109 [100]
       5.21%  kworker/0:1H:109 [100] S ==> swapper/0:0 [120]
       1.78%  swapper/3:0 [120] R ==> transmission-gt:17773 [120]
       1.78%  transmission-gt:17773 [120] S ==> swapper/3:0 [120]
       1.53%  Xephyr:6524 [120] S ==> swapper/0:0 [120]
       1.53%  swapper/0:0 [120] R ==> Xephyr:6524 [120]
       1.17%  swapper/2:0 [120] R ==> irq/33-iwlwifi:233 [49]
       1.13%  irq/33-iwlwifi:233 [49] S ==> swapper/2:0 [120]

Note that the 'trace' sort key works only for tracepoint events.  If
it's used to other type of events, just "N/A" will be printed.
Suggested-and-acked-by: NJiri Olsa <jolsa@redhat.com>
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-8-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

a34bb6a0

perf tools: Try to show pretty printed output for dynamic sort keys · 60517d28

由 Namhyung Kim 提交于 12月 23, 2015

Each tracepoint event has format string for print to improve
readability.  Try to parse the output and match the field name.  If it
finds one, use that for the result.  If not, fallbacks to the original
output.

For example, sort on kmem:kmalloc.gfp_flags looks like below:
(Note: libtraceevent plugins are not installed on my system.  They might
affect the output below)

Before:
  # Overhead  Command   gfp_flags
  # ........  .......  ..........
  #
      99.89%  perf          32848
       0.06%  sleep           208
       0.03%  perf          32976
       0.01%  perf            208

After:
  # Overhead  Command            gfp_flags
  # ........  .......  ...................
  #
      99.89%  perf       GFP_NOFS|GFP_ZERO
       0.06%  sleep             GFP_KERNEL
       0.03%  perf     GFP_KERNEL|GFP_ZERO
       0.01%  perf              GFP_KERNEL
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-7-git-send-email-namhyung@kernel.org
[ Fixed clash with earlier, updated patch in this patchkit ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

60517d28

perf tools: Add dynamic sort key for tracepoint events · c7c2a5e4

由 Namhyung Kim 提交于 12月 23, 2015

The existing sort keys are less useful for tracepoint events in that
they are always sampled at the same place, the function where the
tracepoint is located.

For example, a 'perf report' on sched:sched_switch event looks like the
following:

  # Overhead  Command          Shared Object     Symbol
  # ........  ...............  ................  ..............
  #
      47.22%  swapper          [kernel.vmlinux]  [k] __schedule
      21.67%  transmission-gt  [kernel.vmlinux]  [k] __schedule
       8.23%  netctl-auto      [kernel.vmlinux]  [k] __schedule
       5.53%  kworker/0:1H     [kernel.vmlinux]  [k] __schedule
       1.98%  Xephyr           [kernel.vmlinux]  [k] __schedule
       1.33%  irq/33-iwlwifi   [kernel.vmlinux]  [k] __schedule
       1.17%  wpa_cli          [kernel.vmlinux]  [k] __schedule
       1.13%  rcu_preempt      [kernel.vmlinux]  [k] __schedule
       0.85%  ksoftirqd/0      [kernel.vmlinux]  [k] __schedule
       0.77%  Timer            [kernel.vmlinux]  [k] __schedule

In fact, tracepoints have meaningful information in their fields but
there's no way to use in 'perf report' currently.  The dynamic sort keys
are introduced in this patc to overcome this limitation.

The sched:sched_switch events have following fields:

  # sudo cat /sys/kernel/debug/tracing/events/sched/sched_switch/format
  name: sched_switch
  ID: 268
  format:
	field:unsigned short common_type;         offset:0; size:2; signed:0;
	field:unsigned char common_flags;         offset:2; size:1; signed:0;
	field:unsigned char common_preempt_count; offset:3; size:1; signed:0;
	field:int common_pid;                     offset:4; size:4; signed:1;

	field:char prev_comm[16]; offset:8;  size:16; signed:1;
	field:pid_t prev_pid;     offset:24; size:4;  signed:1;
	field:int prev_prio;      offset:28; size:4;  signed:1;
	field:long prev_state;    offset:32; size:8;  signed:1;
	field:char next_comm[16]; offset:40; size:16; signed:1;
	field:pid_t next_pid;     offset:56; size:4;  signed:1;
	field:int next_prio;      offset:60; size:4;  signed:1;

  print fmt: "prev_comm=%s prev_pid=%d prev_prio=%d prev_state=%s%s ==>
              next_comm=%s next_pid=%d next_prio=%d",
    REC->prev_comm, REC->prev_pid, REC->prev_prio,
    REC->prev_state & (2048-1) ? __print_flags(REC->prev_state & (2048-1),
    "|", { 1, "S"} , { 2, "D" }, { 4, "T" }, { 8, "t" }, { 16, "Z" }, { 32, "X" },
    { 64, "x" }, { 128, "K"}, { 256, "W" }, { 512, "P" }, { 1024, "N" }) : "R",
    REC->prev_state & 2048 ? "+" : "", REC->next_comm, REC->next_pid, REC->next_prio

With dynamic sort keys, you can use <event.field> as a sort key.  Those
dynamic keys are checked and created on demand.  For instance, below is
to sort by next_pid field output on the same data file:

  $ perf report -s comm,sched:sched_switch.next_pid --stdio
  ...
  # Overhead  Command            next_pid
  # ........  ...............  ..........
  #
      21.23%  transmission-gt           0
      20.86%  swapper               17773
       6.62%  netctl-auto               0
       5.25%  swapper                 109
       5.21%  kworker/0:1H              0
       1.98%  Xephyr                    0
       1.98%  swapper                6524
       1.98%  swapper               27478
       1.37%  swapper               27476
       1.17%  swapper                 233

Multiple dynamic sort keys are also supported:

  $ perf report -s comm,sched:sched_switch.next_pid,sched:sched_switch.next_comm --stdio
  ...
  # Overhead  Command            next_pid         next_comm
  # ........  ...............  ..........  ................
  #
      20.86%  swapper               17773   transmission-gt
       9.64%  transmission-gt           0         swapper/0
       9.16%  transmission-gt           0         swapper/2
       5.25%  swapper                 109      kworker/0:1H
       5.21%  kworker/0:1H              0         swapper/0
       2.14%  netctl-auto               0         swapper/2
       1.98%  netctl-auto               0         swapper/0
       1.98%  swapper                6524            Xephyr
       1.98%  swapper               27478       netctl-auto
       1.78%  transmission-gt           0         swapper/3
       1.53%  Xephyr                    0         swapper/0
       1.29%  netctl-auto               0         swapper/1
       1.29%  swapper               27476       netctl-auto
       1.21%  netctl-auto               0         swapper/3
       1.17%  swapper                 233    irq/33-iwlwifi

Note that pid 0 exists for each cpu so have comm of 'swapper/N'.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-6-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

c7c2a5e4

perf tools: Pass evlist to setup_sorting() · 40184c46

由 Namhyung Kim 提交于 12月 23, 2015

This is a preparation to support dynamic sort keys for tracepoint
events.  Dynamic sort keys can be created for specific fields in trace
events so it needs the event information.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-5-git-send-email-namhyung@kernel.org
[ Moving the evlist creation earlier in top was split to a previous patch ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

40184c46

perf top: Create the evlist sooner · 54f8f403

由 Namhyung Kim 提交于 12月 23, 2015

This is a preparation to support dynamic sort keys for tracepoint
events.  Dynamic sort keys can be created for specific fields in trace
events so it needs the event information, so we need to pass the evlist
to the sort routines, create it sooner so that the next patch can do
that.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-5-git-send-email-namhyung@kernel.org
[ Split from the patch passing the evlist to the sort routines ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

54f8f403

tools lib traceevent: Factor out and export print_event_field[s]() · be45d40e

由 Namhyung Kim 提交于 12月 23, 2015

The print_event_field() and print_event_fields() functions print basic
information of a given field or event without the print format.  They'll
be used by dynamic sort keys later.

Committer note:

Rename it to pevent_print_field[s]() to get proper namespacing, as
discussed with Steven Rostedt.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NSteven Rostedt <rostedt@goodmis.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450876121-22494-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

be45d40e

perf hist: Save raw_data/size for tracepoint events · 72392834

由 Namhyung Kim 提交于 12月 24, 2015

The raw_data and raw_size fields are to provide tracepoint specific
information.  They will be used by dynamic sort keys later.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450923377-18641-1-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

72392834

perf hist: Pass struct sample to __hists__add_entry() · fd36f3dd

由 Namhyung Kim 提交于 12月 23, 2015

This is a preparation to add more info into the hist_entry.  Also it
already passes too many argument, so passing sample directly will reduce
the overhead of the function call.
Signed-off-by: NNamhyung Kim <namhyung@kernel.org>
Acked-by: NJiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: http://lkml.kernel.org/r/1450804030-29193-2-git-send-email-namhyung@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

fd36f3dd

18 12月, 2015 21 次提交

perf stat report: Allow to override aggr_mode · 89af4e05

由 Jiri Olsa 提交于 11月 05, 2015

Allowing to override record aggr_mode. It's possible to use perf stat
like:

   $ perf stat report -A
   $ perf stat report --per-core
   $ perf stat report --per-socket

To customize the recorded aggregate mode regardless what was used during
the stat record command.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-19-git-send-email-jolsa@kernel.org
[ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

89af4e05

perf stat report: Process event update events · fa6ea781

由 Jiri Olsa 提交于 11月 05, 2015

Adding processing of event update events, so perf stat report can store
additional info for events - unit,scale,name.

Committer note:

Before:

  # perf stat record -e power/energy-cores/ -a
  ^C
  Performance counter stats for 'system wide':

             77.41 Joules power/energy-cores/

       1.597176695 seconds time elapsed

  # perf stat report

  Performance counter stats for '/home/acme/bin/perf stat record -e power/energy-cores/ -a':

   332,488,114,176      power/energy-cores/

       1.597176695 seconds time elapsed

  #

After, using the same perf.data file generated in the "Before" case
above:

  # perf stat report

  Performance counter stats for '/home/acme/bin/perf stat record -e power/energy-cores/ -a':

             77.41 Joules power/energy-cores/

       1.597176695 seconds time elapsed

  #
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-17-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

fa6ea781

perf stat report: Process stat and stat round events · a56f9390

由 Jiri Olsa 提交于 11月 05, 2015

Adding processing of stat and stat round events.

The stat data com in stat events, using generic function
process_stat_round_event to store data under perf_evsel object.

The stat-round events comes each interval or as last event in non
interval mode. The function process_stat_round_event process stored data
for each perf_evsel object and print it out.

Committer note:

After this patch:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

        0.498381  task-clock (msec)       #    0.571 CPUs utilized
               2  context-switches        #    0.004 M/sec
               0  cpu-migrations          #    0.000 K/sec
             149  page-faults             #    0.299 M/sec
       1,271,635  cycles                  #    2.552 GHz
         928,712  stalled-cycles-frontend #   73.03% frontend cycles idle
         663,286  stalled-cycles-backend  #   52.16% backend  cycles idle
         792,614  instructions            #    0.62  insns per cycle
                                          #    1.17  stalled cycles per insn
         136,850  branches                #  274.589 M/sec
   <not counted>  branch-misses            (0.00%)

     0.000873419 seconds time elapsed

  $
  $ perf stat report

   Performance counter stats for '/home/acme/bin/perf stat record usleep 1':

        0.498381  task-clock (msec)       #    0.571 CPUs utilized
               2  context-switches        #    0.004 M/sec
               0  cpu-migrations          #    0.000 K/sec
             149  page-faults             #    0.299 M/sec
       1,271,635  cycles                  #    2.552 GHz
         928,712  stalled-cycles-frontend #   73.03% frontend cycles idle
         663,286  stalled-cycles-backend  #   52.16% backend  cycles idle
         792,614  instructions            #    0.62  insns per cycle
                                          #    1.17  stalled cycles per insn
         136,850  branches                #  274.589 M/sec
   <not counted>  branch-misses            (0.00%)

     0.000873419 seconds time elapsed

  $
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-16-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

a56f9390

perf stat report: Move csv_sep initialization before report command · 6edb78a2

由 Jiri Olsa 提交于 11月 05, 2015

So we have csv_sep properly initialized before report command leg.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-18-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

6edb78a2

perf stat report: Add support to initialize aggr_map from file · 68d702f7

由 Jiri Olsa 提交于 11月 05, 2015

Using perf.data's perf_env data to initialize aggregate config.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-15-git-send-email-jolsa@kernel.org
[ s/stat/st/g, s/socket/socket_id/g to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

68d702f7

perf stat report: Process stat config event · 62ba18ba

由 Jiri Olsa 提交于 11月 05, 2015

Adding processing of stat config event and initialize stat_config
object.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-14-git-send-email-jolsa@kernel.org
[ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

62ba18ba

perf stat report: Process cpu/threads maps · 1975d36e

由 Jiri Olsa 提交于 11月 05, 2015

Adding processing of cpu/threads maps. Configuring session's evlist with
these maps.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-13-git-send-email-jolsa@kernel.org
[ s/stat/st/g, s/time/tm/g parameters to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

1975d36e

perf stat report: Add report command · ba6039b6

由 Jiri Olsa 提交于 11月 05, 2015

Adding 'perf stat report' command support. ATM it only processes attr
events and display nothing.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-12-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

ba6039b6

perf stat record: Synthesize event update events · 7b60a7e3

由 Jiri Olsa 提交于 11月 05, 2015

Synthesize other events stuff not carried within attr event - unit,
scale, name.
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-11-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

7b60a7e3

perf stat record: Do not allow record with multiple runs mode · e9d6db8e

由 Jiri Olsa 提交于 11月 05, 2015

We currently don't support storing multiple session in perf.data,
so we can't allow -r option in stat record.

  $ perf stat -e cycles -r 2 record ls
  Cannot use -r option with perf stat record.

Committer note:

Before this patch we would a perf.data file such as:

  $ perf stat -e cycles -r 2 record ls
  <SNIP>

   Performance counter stats for 'ls' (2 runs):

         3,935,236      cycles

       0.002353261 seconds time elapsed                                          ( +-  4.76% )

  $ perf report -D | grep PERF_RECORD | grep ROUND
  0xf0 [0]: failed to process type: 16
  Error:
  failed to process sample
  $
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-10-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

e9d6db8e

perf stat record: Write stat round events on record · 7aad0c32

由 Jiri Olsa 提交于 11月 05, 2015

Writing stat round events on 'perf stat record' for each interval round.
In non interval mode we store round event after the last stat event.

Committer note:

After the patch:

  $ perf report -D | grep PERF_RECORD | grep ROUND
  0x852 [0x18]: PERF_RECORD_STAT_ROUND
  $
Reported-by: NKan Liang <kan.liang@intel.com>
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-9-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

7aad0c32

perf stat record: Write stat events on record · 5a6ea81b

由 Jiri Olsa 提交于 11月 05, 2015

Writing stat events on 'perf stat record' at the time we read counter
values from kernel.

Committer note:

After the patch:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

          0.598006      task-clock (msec)         #    0.484 CPUs utilized
                 1      context-switches          #    0.002 M/sec
                 0      cpu-migrations            #    0.000 K/sec
                52      page-faults               #    0.087 M/sec
           882,744      cycles                    #    1.476 GHz
           581,416      stalled-cycles-frontend   #   65.86% frontend cycles idle
   <not supported>      stalled-cycles-backend
           636,479      instructions              #    0.72  insns per cycle
                                                  #    0.91  stalled cycles per insn
           129,334      branches                  #  216.275 M/sec
             7,512      branch-misses             #    5.81% of all branches

       0.001235157 seconds time elapsed

  $ oldperf evlist
  task-clock
  context-switches
  cpu-migrations
  page-faults
  cycles
  stalled-cycles-frontend
  stalled-cycles-backend
  instructions
  branches
  branch-misses
  $ oldperf report --stdio
  Error:
  The perf.data file has no samples!
  # To display the perf.data header info, please use --header/--header-only options.
  #
  $ perf report -D | grep PERF_RECORD
  0x5b0 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 5504
  0x5d8 [0x12]: PERF_RECORD_CPU_MAP nr: 1 cpu: 65535
  0x5ea [0x40]: PERF_RECORD_STAT_CONFIG
  0x62a [0x30]: PERF_RECORD_STAT
  0x65a [0x30]: PERF_RECORD_STAT
  0x68a [0x30]: PERF_RECORD_STAT
  0x6ba [0x30]: PERF_RECORD_STAT
  0x6ea [0x30]: PERF_RECORD_STAT
  0x71a [0x30]: PERF_RECORD_STAT
  0x74a [0x30]: PERF_RECORD_STAT
  0x77a [0x30]: PERF_RECORD_STAT
  0x7aa [0x30]: PERF_RECORD_STAT
  -1 -1 0x7da [0x40]: PERF_RECORD_MMAP -1/0: [0xffffffff81000000(0x1f000000) @ 0xffffffff81000000]: x [kernel.kallsyms]_text
  $
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-8-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

5a6ea81b

perf stat record: Add pipe support for record command · 664c98d4

由 Jiri Olsa 提交于 11月 05, 2015

Allowing storing stat record data into pipe, so report tools
(report/script) could read data directly from record.

Committer note:

Before this patch:

  $ perf stat record -o - usleep 1 | perf report -i -
  incompatible file format (rerun with -v to learn more)
  $ perf stat record -o - usleep 1 | perf script -i -
  incompatible file format (rerun with -v to learn more)
  $ ls -la perf.data
  ls: cannot access perf.data: No such file or directory
  $

After:

  $ perf stat record -o - usleep 1 | perf report -i -
  # To display the perf.data header info, please use
  # --header/--header-only options.
  #
  Error:
  The - file has no samples!
  $ perf stat record -o - usleep 1 | perf script -i -
  Display of symbols requested but neither sample IP nor sample address
  is selected. Hence, no addresses to convert to symbols.
  0 [0x80]: failed to process type: 64
  $ ls -la perf.data
  ls: cannot access perf.data: No such file or directory
  $
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-7-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

664c98d4

perf stat record: Store events IDs in perf data file · 2af4646d

由 Jiri Olsa 提交于 11月 05, 2015

Store event IDs in evlist object so it get stored into perf.data file.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-6-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

2af4646d

perf evlist: Export id_add_fd() · 1c59612d

由 Jiri Olsa 提交于 11月 05, 2015

Will be used to storing the event IDs in evlist object so it get stored
into perf.data file.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-6-git-send-email-jolsa@kernel.org
[ Split from the patch storing the ids in the perf.data file ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

1c59612d

perf stat record: Synthesize stat record data · 8b99b1a4

由 Jiri Olsa 提交于 11月 05, 2015

Synthesizing needed stat record data for report/script:
  - cpu/thread maps
  - stat config

Committer note:

New records generated on a perf.data file with this patch:

  $ perf report -D | grep PERF_RECORD_
  0x568 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 29097
  0x590 [0x12]: PERF_RECORD_CPU_MAP nr: 1 cpu: 65535
  0x5a2 [0x40]: PERF_RECORD_STAT_CONFIG
  $
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-5-git-send-email-jolsa@kernel.org
[ Adjusted wrt kernel PERF_RECORD_MMAP added when introducing 'perf stat record' ]
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

8b99b1a4

perf stat record: Initialize record features · 3ba78bd0

由 Jiri Olsa 提交于 11月 05, 2015

Disabling all non stat related features.

Also as we now enable STAT feature in the data file, adding code to
instruct session open to skip sample type checking for stat data files.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1446734469-11352-4-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

3ba78bd0

perf stat record: Add record command · 4979d0c7

由 Jiri Olsa 提交于 11月 05, 2015

Add 'perf stat record' command support. It creates simple (header only)
perf.data file ATM.

The record command could be specified anywhere among stat options. All
stat command options are valid for stat record command with '-o' option
exception. If specified for record command it denotes the perf data file
name.

Committer note:

Set sample_type to PERF_SAMPLE_IDENTIFIER, which should be harmless
while avoiding that older tools show confusing messages, for instance,
with sample_type = 0, we get:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

          0.630237      task-clock (msec)         #    0.528 CPUs utilized
                 1      context-switches          #    0.002 M/sec
                 0      cpu-migrations            #    0.000 K/sec
                52      page-faults               #    0.083 M/sec
           978,312      cycles                    #    1.552 GHz
           671,931      stalled-cycles-frontend   #   68.68% frontend cycles idle
   <not supported>      stalled-cycles-backend
           646,379      instructions              #    0.66  insns per cycle
                                                  #    1.04  stalled cycles per insn
           131,046      branches                  #  207.931 M/sec
             7,073      branch-misses             #    5.40% of all branches

       0.001193240 seconds time elapsed

  $ oldperf evlist
  WARNING: The perf.data file's data size field is 0 which is unexpected.
  Was the 'perf record' command properly terminated?
  non matching sample_type
  $

While with sample_type set to PERF_SAMPLE_IDENTIFIER, after we re-run 'perf
stat record usleep' we get:

  $ oldperf evlist
  WARNING: The perf.data file's data size field is 0 which is unexpected.
  Was the 'perf record' command properly terminated?
  task-clock
  context-switches
  cpu-migrations
  page-faults
  cycles
  stalled-cycles-frontend
  stalled-cycles-backend
  instructions
  branches
  branch-misses
  $

Which at least shows the names of the events in the perf.data file.

Additionally, such files, when passed to 'perf report' will produce:

  $ oldperf report --stdio
  WARNING: The perf.data file's data size field is 0 which is unexpected.
  Was the 'perf record' command properly terminated?
  Warning:
  Kernel address maps (/proc/{kallsyms,modules}) were restricted.

  Check /proc/sys/kernel/kptr_restrict before running 'perf record'.

  As no suitable kallsyms nor vmlinux was found, kernel samples
  can't be resolved.

  Samples in kernel modules can't be resolved as well.

  Error:
  The perf.data file has no samples!
  # To display the perf.data header info, please use --header/--header-only options.
  #
  $

Which is confusing and can be solved by just adding the kernel mmap record,
which will also remove that warning about the data size field being equal to
zero, after generating the mmap record:

  $ perf stat record usleep 1

   Performance counter stats for 'usleep 1':

          0.600796      task-clock (msec)         #    0.478 CPUs utilized
                 1      context-switches          #    0.002 M/sec
                 0      cpu-migrations            #    0.000 K/sec
                54      page-faults               #    0.090 M/sec
           886,844      cycles                    #    1.476 GHz
           582,169      stalled-cycles-frontend   #   65.65% frontend cycles idle
   <not supported>      stalled-cycles-backend
           638,344      instructions              #    0.72  insns per cycle
                                                  #    0.91  stalled cycles per insn
           130,204      branches                  #  216.719 M/sec
             7,500      branch-misses             #    5.76% of all branches

       0.001255897 seconds time elapsed

  $ oldperf evlist
  task-clock
  context-switches
  cpu-migrations
  page-faults
  cycles
  stalled-cycles-frontend
  stalled-cycles-backend
  instructions
  branches
  branch-misses
  $ oldperf report --stdio
  Error:
  The perf.data file has no samples!
  # To display the perf.data header info, please use --header/--header-only options.
  #
  [acme@zoo linux]$

No warnings, sensible output about what are the events in the perf.data file and also
a "file has no samples" message, which indeed it doesn't.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: htp://lkml.kernel.org/r/1446734469-11352-3-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

4979d0c7

perf tools: Introduce stat perf.data header feature · ffa517ad

由 Jiri Olsa 提交于 10月 25, 2015

Introducing the 'stat' feature to mark a perf.data as created by  the
'perf stat record' command. It contains no data.

It's needed so that the report tools (report/script) can differentiate
sampling data from counting data, because they need to be treated in a
different way.

In the future it might be used to store the version of the stat storage
system used.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-28-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

ffa517ad

perf report: Display newly added events in raw dump · 2d2aea6a

由 Jiri Olsa 提交于 10月 25, 2015

The 'perf report -D' command will now display detailed output for these
newly added events:

  event_update
  thread_map
  cpu_map
  stat
  stat_config
  stat_round
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-27-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

2d2aea6a

perf tools: Add perf_event__fprintf_event_update function · c853f939

由 Jiri Olsa 提交于 10月 25, 2015

To display a 'event update' event for raw dump.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NKan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-26-git-send-email-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

c853f939

openeuler / Kernel 接近 2 年 前同步成功

openeuler / Kernel
接近 2 年前同步成功