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author | Dan Williams <dan.j.williams@intel.com> | 2008-07-17 17:59:55 -0700 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2008-07-17 17:59:55 -0700 |
commit | d2c52b7983b95bb3fc2a784e479f832f142d4523 (patch) | |
tree | 7bc37e7438cee523496674adcd97034df764af47 /crypto/async_tx | |
parent | 669ab0b210f9bd15d94d4d6a49ae13366a85e4da (diff) | |
download | kernel_samsung_tuna-d2c52b7983b95bb3fc2a784e479f832f142d4523.zip kernel_samsung_tuna-d2c52b7983b95bb3fc2a784e479f832f142d4523.tar.gz kernel_samsung_tuna-d2c52b7983b95bb3fc2a784e479f832f142d4523.tar.bz2 |
async_tx: export async_tx_quiesce
Replace open coded "wait and acknowledge" instances with async_tx_quiesce.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'crypto/async_tx')
-rw-r--r-- | crypto/async_tx/async_memcpy.c | 10 | ||||
-rw-r--r-- | crypto/async_tx/async_memset.c | 10 | ||||
-rw-r--r-- | crypto/async_tx/async_tx.c | 29 | ||||
-rw-r--r-- | crypto/async_tx/async_xor.c | 37 |
4 files changed, 24 insertions, 62 deletions
diff --git a/crypto/async_tx/async_memcpy.c b/crypto/async_tx/async_memcpy.c index a5eda80..06a7f4b 100644 --- a/crypto/async_tx/async_memcpy.c +++ b/crypto/async_tx/async_memcpy.c @@ -73,15 +73,7 @@ async_memcpy(struct page *dest, struct page *src, unsigned int dest_offset, pr_debug("%s: (sync) len: %zu\n", __func__, len); /* wait for any prerequisite operations */ - if (depend_tx) { - /* if ack is already set then we cannot be sure - * we are referring to the correct operation - */ - BUG_ON(async_tx_test_ack(depend_tx)); - if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR) - panic("%s: DMA_ERROR waiting for depend_tx\n", - __func__); - } + async_tx_quiesce(&depend_tx); dest_buf = kmap_atomic(dest, KM_USER0) + dest_offset; src_buf = kmap_atomic(src, KM_USER1) + src_offset; diff --git a/crypto/async_tx/async_memset.c b/crypto/async_tx/async_memset.c index 27a97dc..d48ed22 100644 --- a/crypto/async_tx/async_memset.c +++ b/crypto/async_tx/async_memset.c @@ -72,15 +72,7 @@ async_memset(struct page *dest, int val, unsigned int offset, dest_buf = (void *) (((char *) page_address(dest)) + offset); /* wait for any prerequisite operations */ - if (depend_tx) { - /* if ack is already set then we cannot be sure - * we are referring to the correct operation - */ - BUG_ON(async_tx_test_ack(depend_tx)); - if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR) - panic("%s: DMA_ERROR waiting for depend_tx\n", - __func__); - } + async_tx_quiesce(&depend_tx); memset(dest_buf, val, len); diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index 9325c61..78a61e7 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -607,15 +607,7 @@ async_trigger_callback(enum async_tx_flags flags, pr_debug("%s: (sync)\n", __func__); /* wait for any prerequisite operations */ - if (depend_tx) { - /* if ack is already set then we cannot be sure - * we are referring to the correct operation - */ - BUG_ON(async_tx_test_ack(depend_tx)); - if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR) - panic("%s: DMA_ERROR waiting for depend_tx\n", - __func__); - } + async_tx_quiesce(&depend_tx); async_tx_sync_epilog(flags, depend_tx, cb_fn, cb_param); } @@ -624,6 +616,25 @@ async_trigger_callback(enum async_tx_flags flags, } EXPORT_SYMBOL_GPL(async_trigger_callback); +/** + * async_tx_quiesce - ensure tx is complete and freeable upon return + * @tx - transaction to quiesce + */ +void async_tx_quiesce(struct dma_async_tx_descriptor **tx) +{ + if (*tx) { + /* if ack is already set then we cannot be sure + * we are referring to the correct operation + */ + BUG_ON(async_tx_test_ack(*tx)); + if (dma_wait_for_async_tx(*tx) == DMA_ERROR) + panic("DMA_ERROR waiting for transaction\n"); + async_tx_ack(*tx); + *tx = NULL; + } +} +EXPORT_SYMBOL_GPL(async_tx_quiesce); + module_init(async_tx_init); module_exit(async_tx_exit); diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c index 19d16e4..689ecce 100644 --- a/crypto/async_tx/async_xor.c +++ b/crypto/async_tx/async_xor.c @@ -30,24 +30,6 @@ #include <linux/raid/xor.h> #include <linux/async_tx.h> -/** - * async_tx_quiesce - ensure tx is complete and freeable upon return - * @tx - transaction to quiesce - */ -static void async_tx_quiesce(struct dma_async_tx_descriptor **tx) -{ - if (*tx) { - /* if ack is already set then we cannot be sure - * we are referring to the correct operation - */ - BUG_ON(async_tx_test_ack(*tx)); - if (dma_wait_for_async_tx(*tx) == DMA_ERROR) - panic("DMA_ERROR waiting for transaction\n"); - async_tx_ack(*tx); - *tx = NULL; - } -} - /* do_async_xor - dma map the pages and perform the xor with an engine. * This routine is marked __always_inline so it can be compiled away * when CONFIG_DMA_ENGINE=n @@ -219,15 +201,7 @@ async_xor(struct page *dest, struct page **src_list, unsigned int offset, } /* wait for any prerequisite operations */ - if (depend_tx) { - /* if ack is already set then we cannot be sure - * we are referring to the correct operation - */ - BUG_ON(async_tx_test_ack(depend_tx)); - if (dma_wait_for_async_tx(depend_tx) == DMA_ERROR) - panic("%s: DMA_ERROR waiting for depend_tx\n", - __func__); - } + async_tx_quiesce(&depend_tx); do_sync_xor(dest, src_list, offset, src_cnt, len, flags, depend_tx, cb_fn, cb_param); @@ -309,17 +283,10 @@ async_xor_zero_sum(struct page *dest, struct page **src_list, tx = async_xor(dest, src_list, offset, src_cnt, len, xor_flags, depend_tx, NULL, NULL); - if (tx) { - if (dma_wait_for_async_tx(tx) == DMA_ERROR) - panic("%s: DMA_ERROR waiting for tx\n", - __func__); - async_tx_ack(tx); - } + async_tx_quiesce(&tx); *result = page_is_zero(dest, offset, len) ? 0 : 1; - tx = NULL; - async_tx_sync_epilog(flags, depend_tx, cb_fn, cb_param); } |