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| author | Jakub Kicinski <kubakici@wp.pl> | 2012-04-04 03:19:10 +0200 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-04-12 12:28:46 +0200 |
| commit | 29cdd4e4ec91aae239192bb122d377d15a9d75e3 (patch) | |
| tree | 2407fb9f3c7144d110029ad7d32328dee45758bc | |
| parent | 0034102808e0dbbf3a2394b82b1bb40b5778de9e (diff) | |
| download | op-kernel-dev-29cdd4e4ec91aae239192bb122d377d15a9d75e3.zip op-kernel-dev-29cdd4e4ec91aae239192bb122d377d15a9d75e3.tar.gz | |
dma-debug: release free_entries_lock before saving stack trace
Saving stack trace can take a while and once the entry
is allocated free_entries_lock is no longer needed.
Signed-off-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| -rw-r--r-- | lib/dma-debug.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/dma-debug.c b/lib/dma-debug.c index 13ef233..518aea7 100644 --- a/lib/dma-debug.c +++ b/lib/dma-debug.c @@ -430,7 +430,7 @@ static struct dma_debug_entry *__dma_entry_alloc(void) */ static struct dma_debug_entry *dma_entry_alloc(void) { - struct dma_debug_entry *entry = NULL; + struct dma_debug_entry *entry; unsigned long flags; spin_lock_irqsave(&free_entries_lock, flags); @@ -438,11 +438,14 @@ static struct dma_debug_entry *dma_entry_alloc(void) if (list_empty(&free_entries)) { pr_err("DMA-API: debugging out of memory - disabling\n"); global_disable = true; - goto out; + spin_unlock_irqrestore(&free_entries_lock, flags); + return NULL; } entry = __dma_entry_alloc(); + spin_unlock_irqrestore(&free_entries_lock, flags); + #ifdef CONFIG_STACKTRACE entry->stacktrace.max_entries = DMA_DEBUG_STACKTRACE_ENTRIES; entry->stacktrace.entries = entry->st_entries; @@ -450,9 +453,6 @@ static struct dma_debug_entry *dma_entry_alloc(void) save_stack_trace(&entry->stacktrace); #endif -out: - spin_unlock_irqrestore(&free_entries_lock, flags); - return entry; } |
