[PATCH 42/58] kernel/events/hw_breakpoint.c: Add prototype for __weak stub of arch_unregister_hw_breakpoint

[Josh Triplett]

kernel/events/hw_breakpoint.c defines an empty stub of
arch_unregister_hw_breakpoint with __weak, for use on architectures
without an alternate implementation.  Define a prototype of that
function, to satisfy gcc (-Wmissing-prototypes) and Sparse (-Wdecl).

kernel/events/hw_breakpoint.c:247:28: warning: no previous prototype for âarch_unregister_hw_breakpointâ [-Wmissing-prototypes]

Signed-off-by: Josh Triplett <josh@xxxxxxxxxxxxxxxx>
---
 kernel/events/hw_breakpoint.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/events/hw_breakpoint.c b/kernel/events/hw_breakpoint.c
index 4a3867a..a792001 100644
--- a/kernel/events/hw_breakpoint.c
+++ b/kernel/events/hw_breakpoint.c
@@ -244,6 +244,7 @@ toggle_bp_slot(struct perf_event *bp, bool enable, enum bp_type_idx type,
 /*
  * Function to perform processor-specific cleanup during unregistration
  */
+void arch_unregister_hw_breakpoint(struct perf_event *bp);
 __weak void arch_unregister_hw_breakpoint(struct perf_event *bp)
 {
 	/*
-- 
1.7.10.4

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