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Fix module probe failure on 32-bit systems

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Previous commit 7ef5e54e2e caused
module probe failure on 32-bit systems, dmesg showed

  Unknown symbol __moddi3

This was caused by the modulo operation 'gethrtime() % tqs->stqs_count'
in the committed code.  Instead of implementing __moddi3 for all 32-bit
systems, Behlendorf advised we can just cast the return value of
gethrtime() into a uint64_t, since gethrtime does not return negative
value on all circumstances we need not care about the potential overflow.

Signed-off-by: Ying Zhu <casualfisher@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #1551
This commit is contained in:
Ying Zhu 2013-06-27 19:41:30 +08:00 committed by Brian Behlendorf
parent 88c283952f
commit c12936b141
1 changed files with 2 additions and 2 deletions
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4
module/zfs/spa.c
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@ -920,7 +920,7 @@ spa_taskq_dispatch_ent(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
if (tqs->stqs_count == 1) {
tq = tqs->stqs_taskq[0];
} else {
tq = tqs->stqs_taskq[gethrtime() % tqs->stqs_count];
tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count];
}
taskq_dispatch_ent(tq, func, arg, flags, ent);
@ -943,7 +943,7 @@ spa_taskq_dispatch_sync(spa_t *spa, zio_type_t t, zio_taskq_type_t q,
if (tqs->stqs_count == 1) {
tq = tqs->stqs_taskq[0];
} else {
tq = tqs->stqs_taskq[gethrtime() % tqs->stqs_count];
tq = tqs->stqs_taskq[((uint64_t)gethrtime()) % tqs->stqs_count];
}
id = taskq_dispatch(tq, func, arg, flags);