kernel/events/core.c defines an empty stub of arch_perf_update_userpage with __weak, for use on architectures without an alternate implementation. Define a prototype of that function, to satisfy gcc (-Wmissing-prototypes) and Sparse (-Wdecl).
arch/x86/kernel/cpu/perf_event.c:1692:6: warning: no previous prototype for ‘arch_perf_update_userpage’ [-Wmissing-prototypes] Signed-off-by: Josh Triplett <[email protected]> --- kernel/events/core.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/events/core.c b/kernel/events/core.c index 543638a..69ab633 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -3353,6 +3353,8 @@ static void calc_timer_values(struct perf_event *event, *running = ctx_time - event->tstamp_running; } +void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now); + void __weak arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now) { } -- 1.7.10.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
