linux-kernel - [RFC PATCH 10/10] smp: remove ipi_call_lock[_irq]()/ipi_call_unlock[

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Date:	Tue, 29 May 2012 15:16:05 +0800
From:	Yong Zhang <yong.zhang0@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	ralf@...ux-mips.org, sshtylyov@...sta.com, david.daney@...ium.com,
	nikunj@...ux.vnet.ibm.com, paulmck@...ux.vnet.ibm.com,
	axboe@...nel.dk, mingo@...nel.org, tglx@...utronix.de,
	peterz@...radead.org, akpm@...ux-foundation.org,
	srivatsa.bhat@...ux.vnet.ibm.com
Subject: [RFC PATCH 10/10] smp: remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]()

From: Yong Zhang <yong.zhang@...driver.com>

There is no user of those APIs anymore, just remove it.

Signed-off-by: Yong Zhang <yong.zhang0@...il.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
---
 include/linux/smp.h |    4 ----
 kernel/smp.c        |   20 --------------------
 2 files changed, 0 insertions(+), 24 deletions(-)

diff --git a/include/linux/smp.h b/include/linux/smp.h
index 717fb74..a34d4f1 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -90,10 +90,6 @@ void kick_all_cpus_sync(void);
 void __init call_function_init(void);
 void generic_smp_call_function_single_interrupt(void);
 void generic_smp_call_function_interrupt(void);
-void ipi_call_lock(void);
-void ipi_call_unlock(void);
-void ipi_call_lock_irq(void);
-void ipi_call_unlock_irq(void);
 #else
 static inline void call_function_init(void) { }
 #endif
diff --git a/kernel/smp.c b/kernel/smp.c
index d0ae5b2..29dd40a 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -581,26 +581,6 @@ int smp_call_function(smp_call_func_t func, void *info, int wait)
 	return 0;
 }
 EXPORT_SYMBOL(smp_call_function);
-
-void ipi_call_lock(void)
-{
-	raw_spin_lock(&call_function.lock);
-}
-
-void ipi_call_unlock(void)
-{
-	raw_spin_unlock(&call_function.lock);
-}
-
-void ipi_call_lock_irq(void)
-{
-	raw_spin_lock_irq(&call_function.lock);
-}
-
-void ipi_call_unlock_irq(void)
-{
-	raw_spin_unlock_irq(&call_function.lock);
-}
 #endif /* USE_GENERIC_SMP_HELPERS */
 
 /* Setup configured maximum number of CPUs to activate */
-- 
1.7.5.4

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