linux-kernel - [PATCH 51/58] x86: perf: Add prototype for arch_perf_update

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Message-Id: <1353302917-13995-52-git-send-email-josh@joshtriplett.org>
Date:	Sun, 18 Nov 2012 21:28:30 -0800
From:	Josh Triplett <josh@...htriplett.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Ingo Molnar <mingo@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...stprotocols.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	linux-kernel@...r.kernel.org
Cc:	Josh Triplett <josh@...htriplett.org>
Subject: [PATCH 51/58] x86: perf: Add prototype for arch_perf_update_userpage

arch/x86/kernel/cpu/perf_event.c defines a function
arch_perf_update_userpage, overriding a __weak stub for that function
defined in kernel/events/core.c.  Nothing currently prototypes that
function.  Add a prototype right before the definition, 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 <josh@...htriplett.org>
---
 arch/x86/kernel/cpu/perf_event.c |    2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 4a3374e..2d070cb 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1689,6 +1689,8 @@ static struct pmu pmu = {
 	.flush_branch_stack	= x86_pmu_flush_branch_stack,
 };
 
+void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now);
+
 void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
 {
 	userpg->cap_usr_time = 0;
-- 
1.7.10.4

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