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Use ddi_time_after and friends to compare time

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Also, make sure we use clock_t for ddi_get_lbolt to prevent type conversion
from screwing things.

Signed-off-by: Chunwei Chen <tuxoko@gmail.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #2142
This commit is contained in:
Chunwei Chen 2014-02-25 17:32:21 +08:00 committed by Brian Behlendorf
parent 888f7141a3
commit 0b75bdb369
6 changed files with 22 additions and 10 deletions
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2
include/sys/vdev_impl.h
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@ -86,7 +86,7 @@ typedef const struct vdev_ops {
struct vdev_cache_entry { struct vdev_cache_entry {
char *ve_data; char *ve_data;
uint64_t ve_offset; uint64_t ve_offset;
uint64_t ve_lastused; clock_t ve_lastused;
avl_node_t ve_offset_node; avl_node_t ve_offset_node;
avl_node_t ve_lastused_node; avl_node_t ve_lastused_node;
uint32_t ve_hits; uint32_t ve_hits;

10
include/sys/zfs_context.h
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@ -584,6 +584,16 @@ extern vnode_t *rootdir;
#define ddi_get_lbolt64() (gethrtime() >> 23) #define ddi_get_lbolt64() (gethrtime() >> 23)
#define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */ #define hz 119 /* frequency when using gethrtime() >> 23 for lbolt */
#define ddi_time_before(a, b) (a < b)
#define ddi_time_after(a, b) ddi_time_before(b, a)
#define ddi_time_before_eq(a, b) (!ddi_time_after(a, b))
#define ddi_time_after_eq(a, b) ddi_time_before_eq(b, a)
#define ddi_time_before64(a, b) (a < b)
#define ddi_time_after64(a, b) ddi_time_before64(b, a)
#define ddi_time_before_eq64(a, b) (!ddi_time_after64(a, b))
#define ddi_time_after_eq64(a, b) ddi_time_before_eq64(b, a)
extern void delay(clock_t ticks); extern void delay(clock_t ticks);
#define SEC_TO_TICK(sec) ((sec) * hz) #define SEC_TO_TICK(sec) ((sec) * hz)

5
module/zfs/arc.c
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@ -2480,7 +2480,8 @@ arc_adapt_thread(void)
#endif /* !_KERNEL */ #endif /* !_KERNEL */
/* No recent memory pressure allow the ARC to grow. */ /* No recent memory pressure allow the ARC to grow. */
if (arc_no_grow && ddi_get_lbolt() >= arc_grow_time) if (arc_no_grow &&
ddi_time_after_eq(ddi_get_lbolt(), arc_grow_time))
arc_no_grow = FALSE; arc_no_grow = FALSE;
arc_adjust_meta(); arc_adjust_meta();
@ -2918,7 +2919,7 @@ arc_access(arc_buf_hdr_t *buf, kmutex_t *hash_lock)
* but it is still in the cache. Move it to the MFU * but it is still in the cache. Move it to the MFU
* state. * state.
*/ */
if (now > buf->b_arc_access + ARC_MINTIME) { if (ddi_time_after(now, buf->b_arc_access + ARC_MINTIME)) {
/* /*
* More than 125ms have passed since we * More than 125ms have passed since we
* instantiated this buffer. Move it to the * instantiated this buffer. Move it to the

4
module/zfs/txg.c
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@ -480,7 +480,7 @@ txg_sync_thread(dsl_pool_t *dp)
tx_state_t *tx = &dp->dp_tx; tx_state_t *tx = &dp->dp_tx;
callb_cpr_t cpr; callb_cpr_t cpr;
vdev_stat_t *vs1, *vs2; vdev_stat_t *vs1, *vs2;
uint64_t start, delta; clock_t start, delta;
#ifdef _KERNEL #ifdef _KERNEL
/* /*
@ -498,7 +498,7 @@ txg_sync_thread(dsl_pool_t *dp)
start = delta = 0; start = delta = 0;
for (;;) { for (;;) {
uint64_t timer, timeout; clock_t timer, timeout;
uint64_t txg; uint64_t txg;
uint64_t ndirty; uint64_t ndirty;

4
module/zfs/vdev_cache.c
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@ -123,9 +123,9 @@ vdev_cache_lastused_compare(const void *a1, const void *a2)
const vdev_cache_entry_t *ve1 = a1; const vdev_cache_entry_t *ve1 = a1;
const vdev_cache_entry_t *ve2 = a2; const vdev_cache_entry_t *ve2 = a2;
if (ve1->ve_lastused < ve2->ve_lastused) if (ddi_time_before(ve1->ve_lastused, ve2->ve_lastused))
return (-1); return (-1);
if (ve1->ve_lastused > ve2->ve_lastused) if (ddi_time_after(ve1->ve_lastused, ve2->ve_lastused))
return (1); return (1);
/* /*

7
module/zfs/zio_inject.c
View File

@ -345,9 +345,10 @@ spa_handle_ignored_writes(spa_t *spa)
if (handler->zi_record.zi_duration > 0) { if (handler->zi_record.zi_duration > 0) {
VERIFY(handler->zi_record.zi_timer == 0 || VERIFY(handler->zi_record.zi_timer == 0 ||
handler->zi_record.zi_timer + ddi_time_after64(
handler->zi_record.zi_duration * hz > (int64_t)handler->zi_record.zi_timer +
ddi_get_lbolt64()); handler->zi_record.zi_duration * hz,
ddi_get_lbolt64()));
} else { } else {
/* duration is negative so the subtraction here adds */ /* duration is negative so the subtraction here adds */
VERIFY(handler->zi_record.zi_timer == 0 || VERIFY(handler->zi_record.zi_timer == 0 ||