linux-kernel - [PATCH] x86/tsc: remove the unused check_tsc

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Date:	Fri, 15 Jul 2016 16:12:10 +0800
From:	Wei Jiangang <weijg.fnst@...fujitsu.com>
To:	<linux-kernel@...r.kernel.org>
CC:	<x86@...nel.org>, <tglx@...utronix.de>, <mingo@...hat.com>,
	<hpa@...or.com>, <bp@...e.de>, <adrian.hunter@...el.com>,
	<a.p.zijlstra@...llo.nl>, Wei Jiangang <weijg.fnst@...fujitsu.com>
Subject: [PATCH] x86/tsc: remove the unused check_tsc_disabled()

check_tsc_disabled() was introduced by commit c73deb6aecda ("perf/x86:
Add ability to calculate TSC from perf sample timestamps").
The only caller arch_perf_update_userpage() had been refactored
by commit fa9cbf320e99 ("perf/x86: Move perf_event.c ...............
=> x86/events/core.c").
so no need keep and export it any more.

Signed-off-by: Wei Jiangang <weijg.fnst@...fujitsu.com>
---
 arch/x86/include/asm/tsc.h | 1 -
 arch/x86/kernel/tsc.c      | 6 ------
 2 files changed, 7 deletions(-)

diff --git a/arch/x86/include/asm/tsc.h b/arch/x86/include/asm/tsc.h
index 7428697c5b8d..a2828127afe0 100644
--- a/arch/x86/include/asm/tsc.h
+++ b/arch/x86/include/asm/tsc.h
@@ -35,7 +35,6 @@ extern void tsc_init(void);
 extern void mark_tsc_unstable(char *reason);
 extern int unsynchronized_tsc(void);
 extern int check_tsc_unstable(void);
-extern int check_tsc_disabled(void);
 extern unsigned long native_calibrate_tsc(void);
 extern unsigned long long native_sched_clock_from_tsc(u64 tsc);
 
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 38ba6de56ede..67ca51438af2 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -335,12 +335,6 @@ int check_tsc_unstable(void)
 }
 EXPORT_SYMBOL_GPL(check_tsc_unstable);
 
-int check_tsc_disabled(void)
-{
-	return tsc_disabled;
-}
-EXPORT_SYMBOL_GPL(check_tsc_disabled);
-
 #ifdef CONFIG_X86_TSC
 int __init notsc_setup(char *str)
 {
-- 
1.9.3