On Tue, Jul 21, 2020 at 02:59:22PM +0530, Naresh Kamboju wrote: > On Tue, 21 Jul 2020 at 00:46, Greg Kroah-Hartman > <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > > > > This is the start of the stable review cycle for the 5.7.10 release. > > There are 243 patches in this series, all will be posted as a response > > to this one. If anyone has any issues with these being applied, please > > let me know. > > > > Responses should be made by Wed, 22 Jul 2020 19:14:36 +0000. > > Anything received after that time might be too late. > > > > The whole patch series can be found in one patch at: > > https://www.kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.7.10-rc2.gz > > or in the git tree and branch at: > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-5.7.y > > and the diffstat can be found below. > > > > thanks, > > > > greg k-h > > Results from Linaro’s test farm. > Regressions detected on arm and arm64 (Juno-r2) > We are bisecting this problem and get back to you soon. > > perf test cases failed > perf: > * Track-with-sched_switch > * perf_record_test > * perf_report_test > > Bad case: > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.002 MB perf-lava-test.data ] > > when it was pass it prints number of samples like below, > Good case: > [ perf record: Woken up 1 times to write data ] > [ perf record: Captured and wrote 0.004 MB perf-lava-test.data (46 samples) ] > > steps to reproduce: > # perf record -e cycles -o perf-lava-test.data ls -a 2>&1 | tee perf-record.log > > Link to full test: > https://qa-reports.linaro.org/lkft/linux-stable-rc-5.7-oe/build/v5.7.9-244-g7d2e5723ce4a/testrun/2969482/suite/perf/test/perf_record_test/log > > test case: > https://github.com/Linaro/test-definitions/blob/master/automated/linux/perf/perf.sh Any hint by bisection as to what this problem is caused by? thanks, greg k-h