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splat taskq:front: Reduce stack frame

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The slightly increased size of the taskq_ent_t when debugging is
enabled has pushed the taskq:front splat test over frame size
limit.  To resolve this dynamically allocate the taskq_ent_t
structures so they are part of the heap instead of the stack.

  In function 'splat_taskq_test6_impl'
  error: the frame size of 1648 bytes is larger than 1024 bytes

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2012-12-10 15:27:05 -08:00
parent 94ff5d38e3
commit a5a98e7260
1 changed files with 6 additions and 1 deletions
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7
module/splat/splat-taskq.c
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@ -828,10 +828,13 @@ splat_taskq_test6_impl(struct file *file, void *arg, boolean_t prealloc)
splat_taskq_id_t tq_id[SPLAT_TASKQ_ORDER_MAX]; splat_taskq_id_t tq_id[SPLAT_TASKQ_ORDER_MAX];
splat_taskq_arg_t tq_arg; splat_taskq_arg_t tq_arg;
int order[SPLAT_TASKQ_ORDER_MAX] = { 1,2,3,6,7,8,4,5 }; int order[SPLAT_TASKQ_ORDER_MAX] = { 1,2,3,6,7,8,4,5 };
taskq_ent_t tqes[SPLAT_TASKQ_ORDER_MAX]; taskq_ent_t *tqes;
int i, rc = 0; int i, rc = 0;
uint_t tflags; uint_t tflags;
tqes = kmem_alloc(sizeof(*tqes) * SPLAT_TASKQ_ORDER_MAX, KM_SLEEP);
memset(tqes, 0, sizeof(*tqes) * SPLAT_TASKQ_ORDER_MAX);
splat_vprint(file, SPLAT_TASKQ_TEST6_NAME, splat_vprint(file, SPLAT_TASKQ_TEST6_NAME,
"Taskq '%s' creating (%s dispatch)\n", "Taskq '%s' creating (%s dispatch)\n",
SPLAT_TASKQ_TEST6_NAME, SPLAT_TASKQ_TEST6_NAME,
@ -899,6 +902,8 @@ out:
"Taskq '%s' destroying\n", tq_arg.name); "Taskq '%s' destroying\n", tq_arg.name);
taskq_destroy(tq); taskq_destroy(tq);
kmem_free(tqes, sizeof(*tqes) * SPLAT_TASKQ_ORDER_MAX);
return rc; return rc;
} }