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Author SHA1 Message Date
hujun5 a89b7f7add clock: remove 64-bit perf support for 32-bit systems 
Remove atomic64-based 64-bit perf counter support for 32-bit systems
where atomic64 operations are unavailable, simplifying userspace perf
implementation to avoid unsupported atomic operations.

Signed-off-by: hujun5 <hujun5@xiaomi.com>
 2026-01-26 21:14:38 +08:00
Yanfeng Liu 8f0e30b07c libc/perf: userspace PMU access 
Add ARCH_HAVE_PERF_EVENTS_USER_ACCESS capability to allow applications
to directly access hardware perf counters via perf_gettime() from
userspace, enabling performance monitoring and profiling without syscalls.

Signed-off-by: Yanfeng Liu <p-liuyanfeng9@xiaomi.com>
 2026-01-26 21:14:38 +08:00