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| author | James Clark <james.clark@arm.com> | 2023-12-11 19:13:21 +0300 |
|---|---|---|
| committer | Will Deacon <will@kernel.org> | 2023-12-12 12:46:22 +0300 |
| commit | 186c91aaf54989a9c74869dcc6ba031313d8e2b8 (patch) | |
| tree | f37e4c8e88c0e4dae71050917ffc2bae2948deca /arch/arm/kernel | |
| parent | c7b98bf0fc79bd2d91f6ef84e07b5f648d43c13e (diff) | |
| download | linux-186c91aaf54989a9c74869dcc6ba031313d8e2b8.tar.xz | |
arm: pmu: Move error message and -EOPNOTSUPP to individual PMUs
-EPERM or -EINVAL always get converted to -EOPNOTSUPP, so replace them.
This will allow __hw_perf_event_init() to return a different code or not
print that particular message for a different error in the next commit.
Signed-off-by: James Clark <james.clark@arm.com>
Link: https://lore.kernel.org/r/20231211161331.1277825-10-james.clark@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/perf_event_v7.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index c890354b04e9..a3322e2b3ea4 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -1052,8 +1052,10 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event, { unsigned long config_base = 0; - if (attr->exclude_idle) - return -EPERM; + if (attr->exclude_idle) { + pr_debug("ARM performance counters do not support mode exclusion\n"); + return -EOPNOTSUPP; + } if (attr->exclude_user) config_base |= ARMV7_EXCLUDE_USER; if (attr->exclude_kernel) |