kernel/linux.git/tools/perf/tests/shell/test_arm_spe_fork.sh, branch v6.4

perf tools: Use "grep -E" instead of "egrep"

2022-12-14T18:28:19+00:00

The latest version of grep claims the egrep is now obsolete so the build now contains warnings that look like: egrep: warning: egrep is obsolescent; using grep -E fix this up by moving the related file to use "grep -E" instead. sed -i "s/egrep/grep -E/g" `grep egrep -rwl tools/perf` Here are the steps to install the latest grep: wget http://ftp.gnu.org/gnu/grep/grep-3.8.tar.gz tar xf grep-3.8.tar.gz cd grep-3.8 && ./configure && make sudo make install export PATH=/usr/local/bin:$PATH Signed-off-by: Tiezhu Yang Acked-by: Ian Rogers Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/1668762999-9297-1-git-send-email-yangtiezhu@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo

perf test: Replace arm spe fork test workload with sqrtloop

2022-11-23T13:26:33+00:00

So that it can get rid of requirement of a compiler. I've also removed killall as it'll kill perf process now and run the test workload for 10 sec instead. Signed-off-by: Namhyung Kim Tested-by: James Clark Tested-by: Leo Yan Cc: Adrian Hunter Cc: Athira Jajeev Cc: German Gomez Cc: Ian Rogers Cc: Ingo Molnar Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Zhengjun Xing Link: https://lore.kernel.org/r/20221116233854.1596378-9-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo

perf test arm-spe: Check if perf-record hangs when recording workload with forks

2022-06-03T19:18:35+00:00

Add shell test to check if perf-record hangs when recording an arm_spe event with forks. The test FAILS if the Kernel is not patched with Commit 961c391217 ("perf: Always wake the parent event"). Unpatched Kernel: $ perf test -v 90 90: Check Arm SPE doesn't hang when there are forks --- start --- test child forked, pid 14232 Recording workload with fork Log lines = 90 /tmp/__perf_test.stderr.0Nu0U Log lines after 1 second = 90 /tmp/__perf_test.stderr.0Nu0U SPE hang test: FAIL test child finished with -1 ---- end ---- Check Arm SPE trace data in workload with forks: FAILED! Patched Kernel: $ perf test -v 90 90: Check Arm SPE doesn't hang when there are forks --- start --- test child forked, pid 2930 Compiling test program... Recording workload... Log lines = 478 /tmp/__perf_test.log.026AI Log lines after 1 second = 557 /tmp/__perf_test.log.026AI SPE hang test: PASS Cleaning up files... test child finished with 0 ---- end ---- Check Arm SPE trace data in workload with forks: Ok Reviewed-by: James Clark Reviewed-by: Leo Yan Signed-off-by: German Gomez Cc: Alexander Shishkin Cc: Jiri Olsa Cc: Mark Rutland Cc: Namhyung Kim Link: https://lore.kernel.org/r/20220228165655.3920-1-german.gomez@arm.com Signed-off-by: Arnaldo Carvalho de Melo