diff options
| author | Christoph Hellwig <hch@infradead.org> | 2014-01-10 12:41:32 +1100 |
|---|---|---|
| committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2014-01-10 12:41:32 +1100 |
| commit | ad45b8d27cafee8a481c7509b9b5d88b2ba60ce9 (patch) | |
| tree | 43ca71c5da472857825e9fabb5230c5cc095ccac /include | |
| parent | 48a04e6fc3c84f638a9ba88053c6f21c5b93d42b (diff) | |
kernel: use lockless list for smp_call_function_single
Make smp_call_function_single and friends more efficient by using
a lockless list.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/blkdev.h | 5 | ||||
| -rw-r--r-- | include/linux/smp.h | 6 |
2 files changed, 6 insertions, 5 deletions
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 1b135d49b279..c93a8db6e904 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -95,10 +95,7 @@ enum rq_cmd_type_bits { * as well! */ struct request { - union { - struct list_head queuelist; - struct llist_node ll_list; - }; + struct list_head queuelist; union { struct call_single_data csd; struct work_struct mq_flush_data; diff --git a/include/linux/smp.h b/include/linux/smp.h index 5da22ee42e16..3834f43f9993 100644 --- a/include/linux/smp.h +++ b/include/linux/smp.h @@ -11,12 +11,16 @@ #include <linux/list.h> #include <linux/cpumask.h> #include <linux/init.h> +#include <linux/llist.h> extern void cpu_idle(void); typedef void (*smp_call_func_t)(void *info); struct call_single_data { - struct list_head list; + union { + struct list_head list; + struct llist_node llist; + }; smp_call_func_t func; void *info; u16 flags; |