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authorTavian Barnes <tavianator@tavianator.com>2025-01-16 14:05:10 -0500
committerTavian Barnes <tavianator@tavianator.com>2025-01-16 14:05:10 -0500
commitf04557374dd37a15842197ce075be600276d341d (patch)
treedc54b33a9cb4b53c4275ded3de83cbfdda67848c /src/ioq.c
parentc6d6720c3026efb74092c021a06f8f2c6d36fb67 (diff)
downloadbfs-f04557374dd37a15842197ce075be600276d341d.tar.xz
ioq: Prefetch slots with a write intent
Diffstat (limited to 'src/ioq.c')
-rw-r--r--src/ioq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/ioq.c b/src/ioq.c
index ced9864..8050c9e 100644
--- a/src/ioq.c
+++ b/src/ioq.c
@@ -387,7 +387,7 @@ static struct ioq_ent *ioq_slot_pop(struct ioqq *ioqq, ioq_slot *slot, bool bloc
// slot is not full, this will prefetch an invalid address, but
// experimentally this is worth it on both Intel (Alder Lake)
// and AMD (Zen 2).
- __builtin_prefetch((void *)(prev << 1));
+ __builtin_prefetch((void *)(prev << 1), 1 /* write */);
#endif
// empty → skip(1)