nuttx

History

chao.an f5d4571abc sched/mqueue: remove sched_lock to improve performance

remove the sched_lock/unlock to improve the performance by 18%

mq_send Flow                        Cycle Count
mq_send                         Origin  Optimized
|
 ->nxmq_send                       24         24
   |
    ->file_mq_send                209        209
      |
      |->sched_lock               243        N/A  <-
      |->nxmq_do_send             391        348
      |  |
      |  |->sched_lock            434        N/A  <-
      |  |->up_unblock_task       545        459
      |   ->sched_unlock          675        N/A  <-
      |
       ->sched_unlock             684        N/A  <-
         |
          ->up_release_pending    701        N/A
            |
             ->arm_switchcontext  856        610

mq_receive
|
 ->arm_fullcontextrestore        1375       1133
   |
    ->up_block_task              1375       1133
      |
       ->nxmq_wait_receive       1530       1288
         |
          ->file_mq_receive      1606       1310
            |
             ->nxmq_receive      1616       1320
               |
                ->mq_receive     1628       1332  - 18%

Signed-off-by: chao.an <anchao@xiaomi.com>

2022-06-10 07:23:42 +09:00

Make.defs

…

mq_getattr.c

mqueue: add file_mq_xx for kernel use

2021-01-05 02:40:43 -06:00

mq_initialize.c

Documentation, comments: Minor improvements and typos fixed

2021-05-09 19:12:13 -07:00

mq_msgfree.c

Don't include assert.h from public header file

2021-06-03 08:36:03 -07:00