From: Peter Zijlstra peterz@infradead.org
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 | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
--- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -1222,6 +1222,11 @@ static int perf_mux_hrtimer_restart(stru 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); @@ -10772,8 +10777,7 @@ perf_event_mux_interval_ms_store(struct 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);