Re: [PATCH v5 09/13] perf/x86/amd: add idle hooks for branch sampling

[Peter Zijlstra]

On Wed, Jan 26, 2022 at 03:34:50PM -0800, Stephane Eranian wrote:
> +static inline void perf_lopwr_cb(bool mode)
> +{
> +	/* key enabled only when BRS is available */
> +	if (static_branch_unlikely(&perf_lopwr_needed))
> +		perf_amd_brs_lopwr_cb(mode);
> +}

static_call() might be better at this point..