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splat taskq:order: Reduce stack frame

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The slightly increased size of the taskq_ent_t when debugging is
enabled has pushed the taskq:order 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_test5_impl'
  error: the frame size of 1680 bytes is larger than 1024 bytes

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf 2012-12-10 15:24:39 -08:00
parent 3238e71763
commit 94ff5d38e3
1 changed files with 6 additions and 1 deletions
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7
module/splat/splat-taskq.c
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@ -669,9 +669,12 @@ splat_taskq_test5_impl(struct file *file, void *arg, boolean_t prealloc)
splat_taskq_arg_t tq_arg;
int order1[SPLAT_TASKQ_ORDER_MAX] = { 1,2,4,5,3,0,0,0 };
int order2[SPLAT_TASKQ_ORDER_MAX] = { 1,2,4,5,3,8,6,7 };
taskq_ent_t tqes[SPLAT_TASKQ_ORDER_MAX];
taskq_ent_t *tqes;
int i, rc = 0;
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_TEST5_NAME,
"Taskq '%s' creating (%s dispatch)\n",
SPLAT_TASKQ_TEST5_NAME,
@ -738,6 +741,8 @@ out:
"Taskq '%s' destroying\n", tq_arg.name);
taskq_destroy(tq);
kmem_free(tqes, sizeof(*tqes) * SPLAT_TASKQ_ORDER_MAX);
return rc;
}