diff options
author | Dan Williams <dan.j.williams@intel.com> | 2009-01-06 11:38:14 -0700 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2009-01-06 11:38:14 -0700 |
commit | 3c10e1995150ab12e3fd134c8df034b97c02f604 (patch) | |
tree | e7097743b6b24a30c68595e2d170c6a0b5096519 /crypto | |
parent | 363139a1adfd085f8f4091ada87263f0283b79ae (diff) | |
download | linux-crypto-3c10e1995150ab12e3fd134c8df034b97c02f604.tar.gz linux-crypto-3c10e1995150ab12e3fd134c8df034b97c02f604.zip |
dmaengine: provide a common 'issue_pending_all' implementation
async_tx and net_dma each have open-coded versions of issue_pending_all,
so provide a common routine in dmaengine.
The implementation needs to walk the global device list, so implement
rcu to allow dma_issue_pending_all to run lockless. Clients protect
themselves from channel removal events by holding a dmaengine reference.
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to '')
-rw-r--r-- | crypto/async_tx/async_tx.c | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/crypto/async_tx/async_tx.c b/crypto/async_tx/async_tx.c index b88bb1f6..2cdf7a08 100644 --- a/crypto/async_tx/async_tx.c +++ b/crypto/async_tx/async_tx.c @@ -45,18 +45,6 @@ static DEFINE_SPINLOCK(async_tx_lock); static LIST_HEAD(async_tx_master_list); -/* async_tx_issue_pending_all - start all transactions on all channels */ -void async_tx_issue_pending_all(void) -{ - struct dma_chan_ref *ref; - - rcu_read_lock(); - list_for_each_entry_rcu(ref, &async_tx_master_list, node) - ref->chan->device->device_issue_pending(ref->chan); - rcu_read_unlock(); -} -EXPORT_SYMBOL_GPL(async_tx_issue_pending_all); - static void free_dma_chan_ref(struct rcu_head *rcu) { |