From: Ralf Baechle <ralf@linux-mips.org>
Date: Thu, 17 May 2012 20:52:29 +0000 (+0200)
Subject: MIPS: Cavium: Remove smp_reserve_lock.
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a3c8b4faeeccb33dbad6969bc9e50bf409f167e7;p=linux-beck.git

MIPS: Cavium: Remove smp_reserve_lock.

There is nothing that is protected by this lock and it's getting in the
way of RT.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/cavium-octeon/smp.c b/arch/mips/cavium-octeon/smp.c
index 97e7ce9b50ed..4b93048044eb 100644
--- a/arch/mips/cavium-octeon/smp.c
+++ b/arch/mips/cavium-octeon/smp.c
@@ -257,8 +257,6 @@ DEFINE_PER_CPU(int, cpu_state);
 
 extern void fixup_irqs(void);
 
-static DEFINE_SPINLOCK(smp_reserve_lock);
-
 static int octeon_cpu_disable(void)
 {
 	unsigned int cpu = smp_processor_id();
@@ -266,8 +264,6 @@ static int octeon_cpu_disable(void)
 	if (cpu == 0)
 		return -EBUSY;
 
-	spin_lock(&smp_reserve_lock);
-
 	set_cpu_online(cpu, false);
 	cpu_clear(cpu, cpu_callin_map);
 	local_irq_disable();
@@ -277,8 +273,6 @@ static int octeon_cpu_disable(void)
 	flush_cache_all();
 	local_flush_tlb_all();
 
-	spin_unlock(&smp_reserve_lock);
-
 	return 0;
 }