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| author | Matthew Wilcox <willy@infradead.org> | 2018-06-12 21:05:44 +0200 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-06-20 04:02:25 +0200 |
| commit | 10e9cbb6b531117be0c4a79f2c7fa9a45a0dd532 (patch) | |
| tree | ea333b10d3aa71849264ab3fe6147b0e0d4420da /include/target/iscsi | |
| parent | scsi: target: Abstract tag freeing (diff) | |
| download | linux-10e9cbb6b531117be0c4a79f2c7fa9a45a0dd532.tar.xz linux-10e9cbb6b531117be0c4a79f2c7fa9a45a0dd532.zip | |
scsi: target: Convert target drivers to use sbitmap
The sbitmap and the percpu_ida perform essentially the same task,
allocating tags for commands. The sbitmap outperforms the percpu_ida as
documented here: https://lkml.org/lkml/2014/4/22/553
The sbitmap interface is a little harder to use, but being able to remove
the percpu_ida code and getting better performance justifies the additional
complexity.
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Acked-by: Felipe Balbi <felipe.balbi@linux.intel.com> # f_tcm
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/target/iscsi')
| -rw-r--r-- | include/target/iscsi/iscsi_target_core.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/target/iscsi/iscsi_target_core.h b/include/target/iscsi/iscsi_target_core.h index cf5f3fff1f1a..f2e6abea8490 100644 --- a/include/target/iscsi/iscsi_target_core.h +++ b/include/target/iscsi/iscsi_target_core.h @@ -4,6 +4,7 @@ #include <linux/dma-direction.h> /* enum dma_data_direction */ #include <linux/list.h> /* struct list_head */ +#include <linux/sched.h> #include <linux/socket.h> /* struct sockaddr_storage */ #include <linux/types.h> /* u8 */ #include <scsi/iscsi_proto.h> /* itt_t */ |