This is a note to let you know that I've just added the patch titled selftests/powerpc: Fix "no_handler" EBB selftest to the 4.19-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: selftests-powerpc-fix-no_handler-ebb-selftest.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 5dc4cf7dbd3f0251082832c54f8c823cb901c22e Author: Athira Rajeev <atrajeev@xxxxxxxxxxxxxxxxxx> Date: Tue May 25 09:51:42 2021 -0400 selftests/powerpc: Fix "no_handler" EBB selftest [ Upstream commit 45677c9aebe926192e59475b35a1ff35ff2d4217 ] The "no_handler_test" in ebb selftests attempts to read the PMU registers twice via helper function "dump_ebb_state". First dump is just before closing of event and the second invocation is done after closing of the event. The original intention of second dump_ebb_state was to dump the state of registers at the end of the test when the counters are frozen. But this will be achieved with the first call itself since sample period is set to low value and PMU will be frozen by then. Hence patch removes the dump which was done before closing of the event. Reported-by: Shirisha Ganta <shirisha.ganta1@xxxxxxx> Signed-off-by: Athira Rajeev <atrajeev@xxxxxxxxxxxxxxxxxx> Tested-by: Nageswara R Sastry <rnsastry@xxxxxxxxxxxxx <mailto:rnsastry@xxxxxxxxxxxxx>> Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/1621950703-1532-2-git-send-email-atrajeev@xxxxxxxxxxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c b/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c index 8341d7778d5e..87630d44fb4c 100644 --- a/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c +++ b/tools/testing/selftests/powerpc/pmu/ebb/no_handler_test.c @@ -50,8 +50,6 @@ static int no_handler_test(void) event_close(&event); - dump_ebb_state(); - /* The real test is that we never took an EBB at 0x0 */ return 0;