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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2022-07-06 07:20:15 +0200
committerWill Deacon <will@kernel.org>2022-07-06 11:02:58 +0100
commit0e35850b341e88055ca11cad74efa464b2159984 (patch)
tree5e37c65b24a99a2c8b3c51cfbb5a598a9aa3b742 /drivers/perf/arm-cci.c
parente9a023f2b73ac35ff5cfbefe8524c64d8173d65f (diff)
perf/arm-cci: Use the bitmap API to allocate bitmaps
Use devm_bitmap_zalloc() instead of hand-writing it. It is less verbose and it improves the semantic. While at it, use bitmap_zero() instead of hand-writing it. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/fbde85a5e8ae99b10a2115d8ea1e69320a62947f.1657084786.git.christophe.jaillet@wanadoo.fr Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'drivers/perf/arm-cci.c')
-rw-r--r--drivers/perf/arm-cci.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
index 16a272c8d4b3..03b1309875ae 100644
--- a/drivers/perf/arm-cci.c
+++ b/drivers/perf/arm-cci.c
@@ -1261,7 +1261,7 @@ static int validate_group(struct perf_event *event)
*/
.used_mask = mask,
};
- memset(mask, 0, BITS_TO_LONGS(cci_pmu->num_cntrs) * sizeof(unsigned long));
+ bitmap_zero(mask, cci_pmu->num_cntrs);
if (!validate_event(event->pmu, &fake_pmu, leader))
return -EINVAL;
@@ -1629,10 +1629,9 @@ static struct cci_pmu *cci_pmu_alloc(struct device *dev)
GFP_KERNEL);
if (!cci_pmu->hw_events.events)
return ERR_PTR(-ENOMEM);
- cci_pmu->hw_events.used_mask = devm_kcalloc(dev,
- BITS_TO_LONGS(CCI_PMU_MAX_HW_CNTRS(model)),
- sizeof(*cci_pmu->hw_events.used_mask),
- GFP_KERNEL);
+ cci_pmu->hw_events.used_mask = devm_bitmap_zalloc(dev,
+ CCI_PMU_MAX_HW_CNTRS(model),
+ GFP_KERNEL);
if (!cci_pmu->hw_events.used_mask)
return ERR_PTR(-ENOMEM);