提交 · c07b45a355ee42665a7a15fa1a09dcc459db9fb8 · openeuler / Kernel

28 12月, 2020 9 次提交

perf record: Tweak "Lowering..." warning in record_opts__config_freq · c07b45a3

由 Hans-Peter Nilsson 提交于 12月 28, 2020

That is, instead of "Lowering default frequency rate to <F>" say
"Lowering default frequency rate from <f> to <F>", specifying the
overridden default frequency <f>, so you don't have to grep through the
source to "remember" that was e.g. 4000.
Signed-off-by: NHans-Peter Nilsson <hp@axis.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20201228031908.B049B203B5@pchp3.se.axis.comSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

c07b45a3

perf tools: Add support to display build ids when available in PERF_RECORD_MMAP2 events · 0b5c8821

由 Jiri Olsa 提交于 12月 14, 2020

Add support to display the build id in PERF_RECORD_MMAP2 events, when
available:

  $ perf script --show-mmap-events | head -4
  swapper ... @ 0xffffffff81000000 <ff1969b3ba5e43911208bb46fa7d5b1eb809e422>]: ---p [kernel.kallsyms]_text
  swapper ... @ 0 <5f62adb730272c9417883ae8b8a8ec224df8cddd>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/firmware/qemu_fw_cfg.ko
  swapper ... @ 0 <c9ac6e1dafc1ebdadb048f967854e810706c8bab>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/char/virtio_console.ko
  swapper ... @ 0 <86441a4c5b2c2ff5b440682f4c612bd4b426eb5c>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/lib/libcrc32c.ko

  $ perf report -D | grep MMAP2 | head -4
  0 0 ... @ 0xffffffff81000000 <ff1969b3ba5e43911208bb46fa7d5b1eb809e422>]: ---p [kernel.kallsyms]_text
  0 0 ... @ 0 <5f62adb730272c9417883ae8b8a8ec224df8cddd>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/firmware/qemu_fw_cfg.ko
  0 0 ... @ 0 <c9ac6e1dafc1ebdadb048f967854e810706c8bab>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/drivers/char/virtio_console.ko
  0 0 ... @ 0 <86441a4c5b2c2ff5b440682f4c612bd4b426eb5c>]: ---p /lib/modules/5.9.0-rc5buildid+/kernel/lib/libcrc32c.ko

Adding build id data into <> brackets.

Committer testing:

  $ perf record -vv --buildid-mmap sleep 1 |& grep -m1 build
  Enabling build id in mmap2 events.
  $ perf evlist -v
  cycles:u: size: 120, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, build_id: 1
  $
  $ perf script --show-mmap-events | head -4
           sleep 274800  2843.556112: PERF_RECORD_MMAP2 274800/274800: [0x564e2fd32000(0x3000) @ 0x2000 <c37cb90b77c79fc719798b066d78ef121285843e>]: r-xp /usr/bin/sleep
           sleep 274800  2843.556129: PERF_RECORD_MMAP2 274800/274800: [0x7fa9550d7000(0x21000) @ 0x1000 <fc190f17c4f4dc4a8a26df18eaeed41ecdb2c61b>]: r-xp /usr/lib64/ld-2.32.so
           sleep 274800  2843.556140: PERF_RECORD_MMAP2 274800/274800: [0x7ffd8fa96000(0x2000) @ 0 00:00 0 0]: r-xp [vdso]
           sleep 274800  2843.556162:          1 cycles:u:  ffffffffbb26bff4 [unknown] ([unknown])
  $
  $ perf buildid-list -i /usr/bin/sleep
  c37cb90b77c79fc719798b066d78ef121285843e
  $ perf buildid-list -i /usr/lib64/ld-2.32.so
  fc190f17c4f4dc4a8a26df18eaeed41ecdb2c61b

And now on a system wide session to check the build ids synthesized for
the kernel and some kernel modules:

  # perf record -a --buildid-mmap sleep 2s
  [ perf record: Woken up 1 times to write data ]
  [ perf record: Captured and wrote 0.717 MB perf.data ]
  # perf script --show-mmap-events | head -4
           swapper     0 [000]     0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffbb000000(0xe02557) @ 0xffffffffbb000000 <e71ac4b0b0631c27181dab25d63be18dad02feb8>]: ---p [kernel.kallsyms]_text
           swapper     0 [000]     0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc01dc000(0x6000) @ 0 <36d21515c0b22eb2859b6419a6cdf87ef4cd01c8>]: ---p /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko
           swapper     0 [000]     0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc01eb000(0x24000) @ 0 <c4fbfea32d0518b3e7879de8deca40ea142bb782>]: ---p /lib/modules/5.11.0-rc1+/kernel/fs/fuse/fuse.ko
           swapper     0 [000]     0.000000: PERF_RECORD_MMAP2 -1/0: [0xffffffffc0210000(0x7000) @ 0 <dd6cfb10ae66aa7b1e7b37000a004004be8092e0>]: ---p /lib/modules/5.11.0-rc1+/kernel/drivers/block/zram/zram.ko
  # perf buildid-list -h kernel

   Usage: perf buildid-list [<options>]

      -k, --kernel          Show current kernel build id

  # perf buildid-list --kernel
  e71ac4b0b0631c27181dab25d63be18dad02feb8
  # file /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko
  /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko: ELF 64-bit LSB relocatable, x86-64, version 1 (SYSV), BuildID[sha1]=36d21515c0b22eb2859b6419a6cdf87ef4cd01c8, with debug_info, not stripped
  # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/drivers/i2c/i2c-dev.ko
  36d21515c0b22eb2859b6419a6cdf87ef4cd01c8
  # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/fs/fuse/fuse.ko
  c4fbfea32d0518b3e7879de8deca40ea142bb782
  # perf buildid-list -i /lib/modules/5.11.0-rc1+/kernel/drivers/block/zram/zram.ko
  dd6cfb10ae66aa7b1e7b37000a004004be8092e0
  #
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: NIan Rogers <irogers@google.com>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-12-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

0b5c8821

perf record: Add --buildid-mmap option to enable PERF_RECORD_MMAP2's build id · e29386c8

由 Jiri Olsa 提交于 12月 14, 2020

Add --buildid-mmap option to enable build id in PERF_RECORD_MMAP2 events.

It will only work if there's kernel support for that and it disables
build id cache (implies --no-buildid).

It's also possible to enable it permanently via config option in
~/.perfconfig file:

  [record]
  build-id=mmap

Also added build_id bit in the verbose output for perf_event_attr:

  # perf record --buildid-mmap -vv
  ...
  perf_event_attr:
    type                             1
    size                             120
    ...
    build_id                         1

Adding also missing text_poke bit.

Committer testing:

  $ perf record -h build

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

      -B, --no-buildid      do not collect buildids in perf.data
      -N, --no-buildid-cache
                            do not update the buildid cache
          --buildid-all     Record build-id of all DSOs regardless of hits
          --buildid-mmap    Record build-id in map events

  $

  $ perf record --buildid-mmap sleep 1
  Failed: no support to record build id in mmap events, update your kernel.
  $

After adding the needed kernel bits in a test kernel:

  $ perf record -vv --buildid-mmap sleep 1 |& grep -m1 build
  Enabling build id in mmap2 events.
  $ perf evlist -v
  cycles:u: size: 120, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1, build_id: 1
  $
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Tested-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Acked-by: NIan Rogers <irogers@google.com>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-16-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

e29386c8

perf tools: Allow synthesizing the build id for kernel/modules/tasks in PERF_RECORD_MMAP2 · 4183a8d7

由 Jiri Olsa 提交于 12月 14, 2020

Adding build id to synthesized mmap2 events for everything -
kernel/modules/tasks, when symbol_conf.buildid_mmap2 is true.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-11-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

4183a8d7

perf tools: Allow using PERF_RECORD_MMAP2 to synthesize the kernel modules maps · e0dbf18f

由 Jiri Olsa 提交于 12月 14, 2020

Allow using PERF_RECORD_MMAP2 to synthesize the kernel modules maps so
that we can use PERF_RECORD_MMAP2 to encode the kernel modules build ids
in the following csets.

It's enabled by a new symbol_conf.buildid_mmap2 bool field, which will
be switchable in following changes.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NIan Rogers <irogers@google.com>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-10-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

e0dbf18f

perf tools: Allow using PERF_RECORD_MMAP2 to synthesize the kernel map · 978410ff

由 Jiri Olsa 提交于 12月 14, 2020

Allow using PERF_RECORD_MMAP2 to synthesize the kernel map so that we
can use PERF_RECORD_MMAP2 to encode the kernel build id in the following
csets.

It's enabled by a new symbol_conf.buildid_mmap2 bool field, which will
be switchable in following changes.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-9-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

978410ff

perf tools: Store build id when available in PERF_RECORD_MMAP2 metadata events · 1ca6e802

由 Jiri Olsa 提交于 12月 14, 2020

When processing a PERF_RECORD_MMAP2 metadata event, check on the build
id misc bit: PERF_RECORD_MISC_MMAP_BUILD_ID and if it is set, store the
build id in mmap's dso object.

Also adding the build id data to struct perf_record_mmap2 event
definition.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-8-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

1ca6e802

perf tools: Do not swap mmap2 fields in case it contains build id · 29245ae8

由 Jiri Olsa 提交于 12月 14, 2020

If the PERF_RECORD_MISC_MMAP_BUILD_ID misc bit is set, mmap2 events
carries a build id, placed in the following union:

  union {
          struct {
                  u32       maj;
                  u32       min;
                  u64       ino;
                  u64       ino_generation;
          };
          struct {
                  u8        build_id_size;
                  u8        __reserved_1;
                  u16       __reserved_2;
                  u8        build_id[20];
          };
  };

In this case we can't swap above fields.
Signed-off-by: NJiri Olsa <jolsa@kernel.org>
Acked-by: NNamhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexei Budankov <abudankov@huawei.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Song Liu <songliubraving@fb.com>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lore.kernel.org/lkml/20201214105457.543111-6-jolsa@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

29245ae8

perf probe: Fixup Arm64 SDT arguments · f19b5872

由 Leo Yan 提交于 12月 25, 2020

Arm64 ELF section '.note.stapsdt' uses string format "-4@[sp, NUM]" if
the probe is to access data in stack, e.g. below is an example for
dumping Arm64 ELF file and shows the argument format:

  Arguments: -4@[sp, 12] -4@[sp, 8] -4@[sp, 4]

Comparing against other archs' argument format, Arm64's argument
introduces an extra space character in the middle of square brackets,
due to argv_split() uses space as splitter, the argument is wrongly
divided into two items.

To support Arm64 SDT, this patch fixes up for this case, if any item
contains sub string "[sp", concatenates the two continuous items.  And
adds the detailed explaination in comment.
Signed-off-by: NLeo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: He Zhe <zhe.he@windriver.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lore.kernel.org/lkml/20201225052751.24513-3-leo.yan@linaro.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

f19b5872

24 12月, 2020 12 次提交

perf probe: Fix memory leak when synthesizing SDT probes · 5149303f

由 Arnaldo Carvalho de Melo 提交于 12月 24, 2020

The argv_split() function must be paired with argv_free(), else we must
keep a reference to the argv array received or do the freeing ourselves,
in synthesize_sdt_probe_command() we were simply leaking that argv[]
array.

Fixes: 3b1f8311 ("perf probe: Add sdt probes arguments into the uprobe cmd string")
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexandre Truong <alexandre.truong@arm.com>
Cc: Alexis Berlemont <alexis.berlemont@gmail.com>
Cc: He Zhe <zhe.he@windriver.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: John Garry <john.garry@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sumanth Korikkar <sumanthk@linux.ibm.com>
Cc: Thomas Richter <tmricht@linux.ibm.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20201224135139.GF477817@kernel.orgSigned-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>

5149303f

perf stat aggregation: Add separate thread member · 8d4852b4