From: Thomas Gleixner <tglx@linutronix•de>
To: linuxppc-dev@ozlabs•org
Subject: [patch 05/15] powerpc: Convert context_lock to raw_spinlock
Date: Thu, 18 Feb 2010 12:22:39 -0000 [thread overview]
Message-ID: <20100218122000.301814237@linutronix.de> (raw)
In-Reply-To: 20100218121904.620984825@linutronix.de
context_lock needs to be a real spinlock in RT. Convert it to
raw_spinlock.
Signed-off-by: Thomas Gleixner <tglx@linutronix•de>
---
arch/powerpc/mm/mmu_context_nohash.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)
Index: linux-2.6-tip/arch/powerpc/mm/mmu_context_nohash.c
===================================================================
--- linux-2.6-tip.orig/arch/powerpc/mm/mmu_context_nohash.c
+++ linux-2.6-tip/arch/powerpc/mm/mmu_context_nohash.c
@@ -56,7 +56,7 @@ static unsigned int next_context, nr_fre
static unsigned long *context_map;
static unsigned long *stale_map[NR_CPUS];
static struct mm_struct **context_mm;
-static DEFINE_SPINLOCK(context_lock);
+static DEFINE_RAW_SPINLOCK(context_lock);
#define CTX_MAP_SIZE \
(sizeof(unsigned long) * (last_context / BITS_PER_LONG + 1))
@@ -121,9 +121,9 @@ static unsigned int steal_context_smp(un
/* This will happen if you have more CPUs than available contexts,
* all we can do here is wait a bit and try again
*/
- spin_unlock(&context_lock);
+ raw_spin_unlock(&context_lock);
cpu_relax();
- spin_lock(&context_lock);
+ raw_spin_lock(&context_lock);
/* This will cause the caller to try again */
return MMU_NO_CONTEXT;
@@ -194,7 +194,7 @@ void switch_mmu_context(struct mm_struct
unsigned long *map;
/* No lockless fast path .. yet */
- spin_lock(&context_lock);
+ raw_spin_lock(&context_lock);
pr_hard("[%d] activating context for mm @%p, active=%d, id=%d",
cpu, next, next->context.active, next->context.id);
@@ -278,7 +278,7 @@ void switch_mmu_context(struct mm_struct
/* Flick the MMU and release lock */
pr_hardcont(" -> %d\n", id);
set_context(id, next->pgd);
- spin_unlock(&context_lock);
+ raw_spin_unlock(&context_lock);
}
/*
@@ -307,7 +307,7 @@ void destroy_context(struct mm_struct *m
WARN_ON(mm->context.active != 0);
- spin_lock_irqsave(&context_lock, flags);
+ raw_spin_lock_irqsave(&context_lock, flags);
id = mm->context.id;
if (id != MMU_NO_CONTEXT) {
__clear_bit(id, context_map);
@@ -318,7 +318,7 @@ void destroy_context(struct mm_struct *m
context_mm[id] = NULL;
nr_free_contexts++;
}
- spin_unlock_irqrestore(&context_lock, flags);
+ raw_spin_unlock_irqrestore(&context_lock, flags);
}
#ifdef CONFIG_SMP
next prev parent reply other threads:[~2010-02-18 12:31 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-18 12:22 [patch 00/15] powerpc: raw_spinlock conversions Thomas Gleixner
2010-02-18 12:22 ` [patch 01/15] powerpc: Convert big_irq_lock to raw_spinlock Thomas Gleixner
2010-02-18 12:22 ` [patch 02/15] powerpc: Convert pmc_owner_lock " Thomas Gleixner
2010-02-18 12:22 ` [patch 03/15] powerpc: Convert die.lock " Thomas Gleixner
2010-02-18 12:22 ` [patch 04/15] powerpc: Convert native_tlbie_lock " Thomas Gleixner
2010-02-18 12:22 ` Thomas Gleixner [this message]
2010-02-18 12:22 ` [patch 06/15] powerpc: Convert tlbivax_lock " Thomas Gleixner
2010-02-18 21:52 ` Kumar Gala
2010-02-18 12:22 ` [patch 07/15] powerpc: Convert beat_htab_lock " Thomas Gleixner
2010-02-18 12:22 ` [patch 08/15] powerpc: Convert beatic_irq_mask_lock " Thomas Gleixner
2010-02-18 12:22 ` [patch 09/15] powerpc: Convert feature_lock " Thomas Gleixner
2010-02-18 12:22 ` [patch 10/15] powerpc: Convert nv_lock " Thomas Gleixner
2010-02-18 12:23 ` [patch 11/15] powerpc: Convert pmac_pic_lock " Thomas Gleixner
2010-02-18 12:23 ` [patch 12/15] powerpc: Convert confirm_error_lock " Thomas Gleixner
2010-02-18 12:23 ` [patch 13/15] powerpc: Convert i8259_lock " Thomas Gleixner
2010-02-18 12:23 ` [patch 14/15] powerpc: Convert ipic_lock " Thomas Gleixner
2010-02-18 12:23 ` [patch 15/15] powerpc: Convert mpic locks " Thomas Gleixner
2010-02-18 12:41 ` [patch 00/15] powerpc: raw_spinlock conversions Geert Uytterhoeven
2010-02-18 15:31 ` Thomas Gleixner
2010-02-18 13:43 ` [PATCH] powerpc/qe: Convert qe_ic_lock to raw_spinlock Anton Vorontsov
2010-02-18 16:32 ` Thomas Gleixner
2010-02-18 22:01 ` Kumar Gala
2010-02-18 13:45 ` [PATCH] powerpc/85xx: Convert socrates_fpga_pic_lock " Anton Vorontsov
2010-02-18 16:33 ` Thomas Gleixner
2010-02-18 22:01 ` Kumar Gala
2010-02-18 13:57 ` [PATCH] powerpc/86xx: Convert gef_pic_lock " Anton Vorontsov
2010-02-18 16:35 ` Thomas Gleixner
2010-02-18 22:01 ` Kumar Gala
2010-02-18 13:57 ` [PATCH] powerpc/82xx: Convert pci_pic_lock " Anton Vorontsov
2010-02-18 16:35 ` Thomas Gleixner
2010-02-18 22:01 ` Kumar Gala
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