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Subject[patch 24/41] cpu alloc: Use in the crypto subsystem.
Use cpu alloc for the crypto subsystem.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
---
crypto/async_tx/async_tx.c | 19 +++++++++----------
1 file changed, 9 insertions(+), 10 deletions(-)

Index: linux-2.6/crypto/async_tx/async_tx.c
===================================================================
--- linux-2.6.orig/crypto/async_tx/async_tx.c 2008-04-29 14:55:49.000000000 -0700
+++ linux-2.6/crypto/async_tx/async_tx.c 2008-05-21 22:01:42.000000000 -0700
@@ -221,10 +221,10 @@
for_each_dma_cap_mask(cap, dma_cap_mask_all)
for_each_possible_cpu(cpu) {
struct dma_chan_ref *ref =
- per_cpu_ptr(channel_table[cap], cpu)->ref;
+ CPU_PTR(channel_table[cap], cpu)->ref;
if (ref) {
atomic_set(&ref->count, 0);
- per_cpu_ptr(channel_table[cap], cpu)->ref =
+ CPU_PTR(channel_table[cap], cpu)->ref =
NULL;
}
}
@@ -237,7 +237,7 @@
else
new = get_chan_ref_by_cap(cap, -1);

- per_cpu_ptr(channel_table[cap], cpu)->ref = new;
+ CPU_PTR(channel_table[cap], cpu)->ref = new;
}

spin_unlock_irqrestore(&async_tx_lock, flags);
@@ -341,7 +341,8 @@
clear_bit(DMA_INTERRUPT, dma_cap_mask_all.bits);

for_each_dma_cap_mask(cap, dma_cap_mask_all) {
- channel_table[cap] = alloc_percpu(struct chan_ref_percpu);
+ channel_table[cap] = CPU_ALLOC(struct chan_ref_percpu,
+ GFP_KERNEL | __GFP_ZERO);
if (!channel_table[cap])
goto err;
}
@@ -357,7 +358,7 @@
printk(KERN_ERR "async_tx: initialization failure\n");

while (--cap >= 0)
- free_percpu(channel_table[cap]);
+ CPU_FREE(channel_table[cap]);

return 1;
}
@@ -370,7 +371,7 @@

for_each_dma_cap_mask(cap, dma_cap_mask_all)
if (channel_table[cap])
- free_percpu(channel_table[cap]);
+ CPU_FREE(channel_table[cap]);

dma_async_client_unregister(&async_tx_dma);
}
@@ -390,10 +391,8 @@
dma_has_cap(tx_type, depend_tx->chan->device->cap_mask))
return depend_tx->chan;
else if (likely(channel_table_initialized)) {
- struct dma_chan_ref *ref;
- int cpu = get_cpu();
- ref = per_cpu_ptr(channel_table[tx_type], cpu)->ref;
- put_cpu();
+ struct dma_chan_ref *ref =
+ _CPU_READ(channel_table[tx_type]->ref);
return ref ? ref->chan : NULL;
} else
return NULL;
--


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