perf: Fix function pointer case (11e929c3) · Commits · e / devices / android_kernel_fairphone_FP5

commit 1af6239d1d3e61d33fd2f0ba53d3d1a67cc50574 upstream. With the advent of CFI it is no longer acceptible to cast function pointers. The robot complains thusly: kernel-events-core.c:warning:cast-from-int-(-)(struct-perf_cpu_pmu_context-)-to-remote_function_f-(aka-int-(-)(void-)-)-converts-to-incompatible-function-type Reported-by:

kernel test robot <lkp@intel.com> Signed-off-by:

Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by:

Cixi Geng <cixi.geng1@unisoc.com> Signed-off-by:

Greg Kroah-Hartman <gregkh@linuxfoundation.org>

kernel/events/core.c

+6 −2

Original line number	Diff line number	Diff line
		@@ -1134,6 +1134,11 @@ static int perf_mux_hrtimer_restart(struct perf_cpu_context *cpuctx)
		return 0;
		}

		static int perf_mux_hrtimer_restart_ipi(void *arg)
		{
		return perf_mux_hrtimer_restart(arg);
		}

		void perf_pmu_disable(struct pmu *pmu)
		{
		int *count = this_cpu_ptr(pmu->pmu_disable_count);
		@@ -9997,8 +10002,7 @@ perf_event_mux_interval_ms_store(struct device *dev,
		cpuctx = per_cpu_ptr(pmu->pmu_cpu_context, cpu);
		cpuctx->hrtimer_interval = ns_to_ktime(NSEC_PER_MSEC * timer);

		cpu_function_call(cpu,
		(remote_function_f)perf_mux_hrtimer_restart, cpuctx);
		cpu_function_call(cpu, perf_mux_hrtimer_restart_ipi, cpuctx);
		}
		cpus_read_unlock();
		mutex_unlock(&mux_interval_mutex);