github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-12 16:18:45 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

drivers: perf: use bitmap_empty() where appropriate

Browse Source 
bitmap_empty() is more verbose and efficient, as it stops traversing
bitmaps as soon as the 1st set bit found.

Switch perf code to using bitmap_empty() where appropriate, and
correspondingly use boolean types.

Signed-off-by: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Signed-off-by: Will Deacon <will@kernel.org>
This commit is contained in:
Yury Norov (NVIDIA) 2025-12-15 20:20:03 -05:00 committed by Will Deacon
parent 12a94953c3
commit 0c7c64146f
2 changed files with 2 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/perf/riscv_pmu_sbi.c
View File

@ -1244,7 +1244,7 @@ static int riscv_pm_pmu_notify(struct notifier_block *b, unsigned long cmd,
{
struct riscv_pmu *rvpmu = container_of(b, struct riscv_pmu, riscv_pm_nb);
struct cpu_hw_events *cpuc = this_cpu_ptr(rvpmu->hw_events);
int enabled = bitmap_weight(cpuc->used_hw_ctrs, RISCV_MAX_COUNTERS);
bool enabled = !bitmap_empty(cpuc->used_hw_ctrs, RISCV_MAX_COUNTERS);
struct perf_event *event;
int idx;

3
drivers/perf/starfive_starlink_pmu.c
View File

@ -450,8 +450,7 @@ static int starlink_pmu_pm_notify(struct notifier_block *b,
starlink_pmu_pm_nb);
struct starlink_hw_events *hw_events =
this_cpu_ptr(starlink_pmu->hw_events);
int enabled = bitmap_weight(hw_events->used_mask,
STARLINK_PMU_MAX_COUNTERS);
bool enabled = !bitmap_empty(hw_events->used_mask, STARLINK_PMU_MAX_COUNTERS);
struct perf_event *event;
int idx;