Messages in this thread Patch in this message | | | From | Andrew Murray <> | Subject | [PATCH 03/10] arm: perf: add additional validation to set_event_filter | Date | Fri, 16 Nov 2018 10:24:06 +0000 |
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The armv7pmu driver doesn't support host/guest mode exclusion so let's report this when set_event_filter is called with these exclusion flags set.
Signed-off-by: Andrew Murray <andrew.murray@arm.com> --- arch/arm/kernel/perf_event_v7.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/arch/arm/kernel/perf_event_v7.c b/arch/arm/kernel/perf_event_v7.c index a4fb0f8..c4c9fbb 100644 --- a/arch/arm/kernel/perf_event_v7.c +++ b/arch/arm/kernel/perf_event_v7.c @@ -1074,6 +1074,8 @@ static int armv7pmu_set_event_filter(struct hw_perf_event *event, if (attr->exclude_idle) return -EPERM; + if (attr->exclude_host || attr->exclude_guest) + return -EPERM; if (attr->exclude_user) config_base |= ARMV7_EXCLUDE_USER; if (attr->exclude_kernel) -- 2.7.4
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