diff options
| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2023-10-12 12:16:17 +0530 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2023-10-12 16:13:39 +0100 |
| commit | 60197a4631b907b30343e25af702257d92f359cf (patch) | |
| tree | 0c44d466c6ca1145f020b21fd2c553ce779a768d /arch | |
| parent | 373beef00f7d781a000b12c31fb17a5a9c25969c (diff) | |
KVM: arm64: pmu: Drop redundant check for non-NULL kvm_pmu_events
There is an allocated and valid struct kvm_pmu_events for each cpu on the
system via DEFINE_PER_CPU(). Hence there cannot be a NULL pointer accessed
via this_cpu_ptr() in the helper kvm_get_pmu_events(). Hence non-NULL check
for pmu in such places are redundant and can be dropped.
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: James Morse <james.morse@arm.com>
Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
Cc: kvmarm@lists.linux.dev
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20231012064617.897346-1-anshuman.khandual@arm.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm64/kvm/pmu.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/arm64/kvm/pmu.c b/arch/arm64/kvm/pmu.c index 0eea225fd09a..a243934c5568 100644 --- a/arch/arm64/kvm/pmu.c +++ b/arch/arm64/kvm/pmu.c @@ -39,7 +39,7 @@ void kvm_set_pmu_events(u32 set, struct perf_event_attr *attr) { struct kvm_pmu_events *pmu = kvm_get_pmu_events(); - if (!kvm_arm_support_pmu_v3() || !pmu || !kvm_pmu_switch_needed(attr)) + if (!kvm_arm_support_pmu_v3() || !kvm_pmu_switch_needed(attr)) return; if (!attr->exclude_host) @@ -55,7 +55,7 @@ void kvm_clr_pmu_events(u32 clr) { struct kvm_pmu_events *pmu = kvm_get_pmu_events(); - if (!kvm_arm_support_pmu_v3() || !pmu) + if (!kvm_arm_support_pmu_v3()) return; pmu->events_host &= ~clr; |