lkml.org 
[lkml]   [2022]   [Jun]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH 5.18 070/181] perf test: Record only user callchains on the "Check Arm64 callgraphs are complete in fp mode" test
    Date
    From: Michael Petlan <mpetlan@redhat.com>

    [ Upstream commit 72dcae8efd42699bbfd55e1ef187310c4e2e5dcb ]

    The testcase 'Check Arm64 callgraphs are complete in fp mode' wants to
    see the following output:

    610 leaf
    62f parent
    648 main

    However, without excluding kernel callchains, the output might look like:

    ffffc2ff40ef1b5c arch_local_irq_enable
    ffffc2ff419d032c __schedule
    ffffc2ff419d06c0 schedule
    ffffc2ff40e4da30 do_notify_resume
    ffffc2ff40e421b0 work_pending
    610 leaf
    62f parent
    648 main

    Adding '--user-callchains' leaves only the wanted symbols in the chain.

    Fixes: cd6382d82752737e ("perf test arm64: Test unwinding using fame-pointer (fp) mode")
    Suggested-by: German Gomez <german.gomez@arm.com>
    Reviewed-by: German Gomez <german.gomez@arm.com>
    Reviewed-by: Leo Yan <leo.yan@linaro.org>
    Signed-off-by: Michael Petlan <mpetlan@redhat.com>
    Cc: German Gomez <german.gomez@arm.com>
    Cc: Jiri Olsa <jolsa@kernel.org>
    Link: https://lore.kernel.org/r/20220614105207.26223-1-mpetlan@redhat.com
    Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    tools/perf/tests/shell/test_arm_callgraph_fp.sh | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/tools/perf/tests/shell/test_arm_callgraph_fp.sh b/tools/perf/tests/shell/test_arm_callgraph_fp.sh
    index 6ffbb27afaba..ec108d45d3c6 100755
    --- a/tools/perf/tests/shell/test_arm_callgraph_fp.sh
    +++ b/tools/perf/tests/shell/test_arm_callgraph_fp.sh
    @@ -43,7 +43,7 @@ CFLAGS="-g -O0 -fno-inline -fno-omit-frame-pointer"
    cc $CFLAGS $TEST_PROGRAM_SOURCE -o $TEST_PROGRAM || exit 1

    # Add a 1 second delay to skip samples that are not in the leaf() function
    -perf record -o $PERF_DATA --call-graph fp -e cycles//u -D 1000 -- $TEST_PROGRAM 2> /dev/null &
    +perf record -o $PERF_DATA --call-graph fp -e cycles//u -D 1000 --user-callchains -- $TEST_PROGRAM 2> /dev/null &
    PID=$!

    echo " + Recording (PID=$PID)..."
    --
    2.35.1


    \
     
     \ /
      Last update: 2022-06-27 13:53    [W:4.460 / U:0.848 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site