s390/cpumf: support user space events for counting

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[ Upstream commit 91d5364dc6 ]

CPU Measurement counting facility events PROBLEM_STATE_CPU_CYCLES(32)
and PROBLEM_STATE_INSTRUCTIONS(33) are valid events. However the device
driver returns error -EOPNOTSUPP when these event are to be installed.

Fix this and allow installation of events PROBLEM_STATE_CPU_CYCLES,
PROBLEM_STATE_CPU_CYCLES:u, PROBLEM_STATE_INSTRUCTIONS and
PROBLEM_STATE_INSTRUCTIONS:u.
Kernel space counting only is still not supported by s390.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Stable-dep-of: 09cda0a400 ("s390/mm: add missing arch_set_page_dat() call to vmem_crst_alloc()")
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Thomas Richter 2022-12-23 11:03:32 +01:00 • committed by Greg Kroah-Hartman

parent a1a1e5ce88

commit 2c14f49916

1 changed files with 24 additions and 11 deletions

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arch/s390/kernel/perf_cpum_cf.c

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