1. 18 Feb, 2021 17 commits
  2. 17 Feb, 2021 7 commits
  3. 16 Feb, 2021 5 commits
    • Arnaldo Carvalho de Melo's avatar
      37b3fa0e
    • Arnaldo Carvalho de Melo's avatar
      Merge branch 'perf/urgent' into perf/core · c1bd8a2b
      Arnaldo Carvalho de Melo authored
      To get some fixes that didn't made into 5.11.
      Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      c1bd8a2b
    • Leo Yan's avatar
      perf arm-spe: Set sample's data source field · a89dbc9b
      Leo Yan authored
      The sample structure contains the field 'data_src' which is used to
      tell the data operation attributions, e.g. operation type is loading or
      storing, cache level, it's snooping or remote accessing, etc.  At the
      end, the 'data_src' will be parsed by perf mem/c2c tools to display
      human readable strings.
      
      This patch is to fill the 'data_src' field in the synthesized samples
      base on different types.  Currently perf tool can display statistics for
      L1/L2/L3 caches but it doesn't support the 'last level cache'.  To fit
      to current implementation, 'data_src' field uses L3 cache for last level
      cache.
      
      Before this commit, perf mem report looks like this:
        # Samples: 75K of event 'l1d-miss'
        # Total weight : 75951
        # Sort order   : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
        #
        # Overhead  Samples  Local Weight  Memory access  Symbol                  Shared Object  Data Symbol             Data Object  Snoop  TLB access
        # ........  .......  ............  .............  ......................  .............  ......................  ...........  .....  ..........
        #
            81.56%    61945  0             N/A            [.] 0x00000000000009d8  serial_c       [.] 0000000000000000    [unknown]    N/A    N/A
            18.44%    14003  0             N/A            [.] 0x0000000000000828  serial_c       [.] 0000000000000000    [unknown]    N/A    N/A
      
      Now on a system with Arm SPE, addresses and access types are displayed:
      
        # Samples: 75K of event 'l1d-miss'
        # Total weight : 75951
        # Sort order   : local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked
        #
        # Overhead  Samples  Local Weight  Memory access  Symbol                  Shared Object  Data Symbol             Data Object  Snoop  TLB access
        # ........  .......  ............  .............  ......................  .............  ......................  ...........  .....  ..........
        #
             0.43%      324  0             L1 miss        [.] 0x00000000000009d8  serial_c       [.] 0x0000ffff80794e00  anon         N/A    Walker hit
             0.42%      322  0             L1 miss        [.] 0x00000000000009d8  serial_c       [.] 0x0000ffff80794580  anon         N/A    Walker hit
      Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
      Reviewed-by: default avatarJames Clark <james.clark@arm.com>
      Tested-by: default avatarJames Clark <james.clark@arm.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Al Grant <al.grant@arm.com>
      Cc: Andre Przywara <andre.przywara@arm.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: Mathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Wei Li <liwei391@huawei.com>
      Cc: Will Deacon <will@kernel.org>
      Signed-off-by: default avatarJames Clark <james.clark@arm.com>
      Link: https://lore.kernel.org/r/20210211133856.2137-6-james.clark@arm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      a89dbc9b
    • Leo Yan's avatar
      perf arm-spe: Synthesize memory event · e55ed342
      Leo Yan authored
      The memory event can deliver two benefits:
      
      - The first benefit is the memory event can give out global view for
        memory accessing, rather than organizing events with scatter mode
        (e.g. uses separate event for L1 cache, last level cache, etc) which
        which can only display a event for single memory type, memory events
        include all memory accessing so it can display the data accessing
        cross memory levels in the same view;
      
      - The second benefit is the sample generation might introduce a big
        overhead and need to wait for long time for Perf reporting, we can
        specify itrace option '--itrace=M' to filter out other events and only
        output memory events, this can significantly reduce the overhead
        caused by generating samples.
      
      This patch is to enable memory event for Arm SPE.
      Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
      Reviewed-by: default avatarJames Clark <james.clark@arm.com>
      Tested-by: default avatarJames Clark <james.clark@arm.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Al Grant <al.grant@arm.com>
      Cc: Andre Przywara <andre.przywara@arm.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: Mathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Wei Li <liwei391@huawei.com>
      Cc: Will Deacon <will@kernel.org>
      Signed-off-by: default avatarJames Clark <james.clark@arm.com>
      Link: https://lore.kernel.org/r/20210211133856.2137-5-james.clark@arm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      e55ed342
    • Leo Yan's avatar
      perf arm-spe: Fill address info for samples · 54f7815e
      Leo Yan authored
      To properly handle memory and branch samples, this patch divides into
      two functions for generating samples: arm_spe__synth_mem_sample() is for
      synthesizing memory and TLB samples; arm_spe__synth_branch_sample() is
      to synthesize branch samples.
      
      Arm SPE backend decoder has passed virtual and physical address through
      packets, the address info is stored into the synthesize samples in the
      function arm_spe__synth_mem_sample().
      
      Committer notes:
      
      Fixed this:
      
        36    46.77 fedora:27                     : FAIL clang version 5.0.2 (tags/RELEASE_502/final)
      
          util/arm-spe.c:269:34: error: missing field 'pid' initializer [-Werror,-Wmissing-field-initializers]
                  struct perf_sample sample = { 0 };
                                                  ^
          util/arm-spe.c:288:34: error: missing field 'pid' initializer [-Werror,-Wmissing-field-initializers]
                  struct perf_sample sample = { 0 };
      
      By using = { .ip = 0, };
      Signed-off-by: default avatarLeo Yan <leo.yan@linaro.org>
      Reviewed-by: default avatarJames Clark <james.clark@arm.com>
      Tested-by: default avatarJames Clark <james.clark@arm.com>
      Cc: Adrian Hunter <adrian.hunter@intel.com>
      Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
      Cc: Al Grant <al.grant@arm.com>
      Cc: Andre Przywara <andre.przywara@arm.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: Mathieu Poirier <mathieu.poirier@linaro.org>
      Cc: Namhyung Kim <namhyung@kernel.org>
      Cc: Peter Zijlstra <peterz@infradead.org>
      Cc: Wei Li <liwei391@huawei.com>
      Cc: Will Deacon <will@kernel.org>
      Signed-off-by: default avatarJames Clark <james.clark@arm.com>
      Link: https://lore.kernel.org/r/20210211133856.2137-4-james.clark@arm.comSigned-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
      54f7815e
  4. 14 Feb, 2021 7 commits
  5. 13 Feb, 2021 4 commits