Gitweb: http://git.kernel.org/linus/7317ac87119dfb6fac36af4bcc64a25b62b5898d
Commit: 7317ac87119dfb6fac36af4bcc64a25b62b5898d
Parent: 66fcb1059deeae072c1bf1536a8e2613028bce3e
Author: Anton Blanchard <anton@samba.org>
AuthorDate: Sun Feb 7 12:30:12 2010 +0000
Committer: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CommitDate: Tue Feb 9 13:56:07 2010 +1100
powerpc: Convert mmu context allocator from idr to ida
We can use the much more lightweight ida allocator since we don't
need the pointer storage idr provides.
Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
---
arch/powerpc/mm/mmu_context_hash64.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_hash64.c
index b910d37..51622da 100644
--- a/arch/powerpc/mm/mmu_context_hash64.c
+++ b/arch/powerpc/mm/mmu_context_hash64.c
@@ -23,7 +23,7 @@
#include <asm/mmu_context.h>
static DEFINE_SPINLOCK(mmu_context_lock);
-static DEFINE_IDR(mmu_context_idr);
+static DEFINE_IDA(mmu_context_ida);
/*
* The proto-VSID space has 2^35 - 1 segments available for user mappings.
@@ -39,11 +39,11 @@ int __init_new_context(void)
int err;
again:
- if (!idr_pre_get(&mmu_context_idr, GFP_KERNEL))
+ if (!ida_pre_get(&mmu_context_ida, GFP_KERNEL))
return -ENOMEM;
spin_lock(&mmu_context_lock);
- err = idr_get_new_above(&mmu_context_idr, NULL, 1, &index);
+ err = ida_get_new_above(&mmu_context_ida, 1, &index);
spin_unlock(&mmu_context_lock);
if (err == -EAGAIN)
@@ -53,7 +53,7 @@ again:
if (index > MAX_CONTEXT) {
spin_lock(&mmu_context_lock);
- idr_remove(&mmu_context_idr, index);
+ ida_remove(&mmu_context_ida, index);
spin_unlock(&mmu_context_lock);
return -ENOMEM;
}
@@ -85,7 +85,7 @@ int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
void __destroy_context(int context_id)
{
spin_lock(&mmu_context_lock);
- idr_remove(&mmu_context_idr, context_id);
+ ida_remove(&mmu_context_ida, context_id);
spin_unlock(&mmu_context_lock);
}
EXPORT_SYMBOL_GPL(__destroy_context);
--
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