diff options
| author | Jasper Lievisse Adriaanse <jasper@cvs.openbsd.org> | 2020-09-14 19:02:10 +0000 |
|---|---|---|
| committer | Jasper Lievisse Adriaanse <jasper@cvs.openbsd.org> | 2020-09-14 19:02:10 +0000 |
| commit | 0351b94d7f3611e633f179d69d49f472e5788416 (patch) | |
| tree | 9c26216c08ec6ead9db3154066e84af82847de2e /sys/kern | |
| parent | 71943a3335634db6ca980f9e0d0303452653999d (diff) | |
add three static probes for vfs: cleaner, bufcache_take and bufcache_rel.
while here, swap two lines in bufcache_release() to put a KASSERT() first
following the pattern in bufcache_take()
ok beck@ mpi@
Diffstat (limited to 'sys/kern')
| -rw-r--r-- | sys/kern/vfs_bio.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/sys/kern/vfs_bio.c b/sys/kern/vfs_bio.c index de41d11ec56..a99f81956bf 100644 --- a/sys/kern/vfs_bio.c +++ b/sys/kern/vfs_bio.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vfs_bio.c,v 1.202 2020/09/12 11:57:24 beck Exp $ */ +/* $OpenBSD: vfs_bio.c,v 1.203 2020/09/14 19:02:09 jasper Exp $ */ /* $NetBSD: vfs_bio.c,v 1.44 1996/06/11 11:15:36 pk Exp $ */ /* @@ -57,6 +57,7 @@ #include <sys/conf.h> #include <sys/kernel.h> #include <sys/specdev.h> +#include <sys/tracepoint.h> #include <uvm/uvm_extern.h> /* XXX Should really be in buf.h, but for uvm_constraint_range.. */ @@ -1209,6 +1210,9 @@ buf_daemon(void *arg) } while ((bp = bufcache_getdirtybuf())) { + TRACEPOINT(vfs, cleaner, bp->b_flags, pushed, + lodirtypages, hidirtypages); + if (UNCLEAN_PAGES < lodirtypages && bcstats.kvaslots_avail > 2 * RESERVE_SLOTS && pushed >= 16) @@ -1693,6 +1697,9 @@ bufcache_take(struct buf *bp) KASSERT((bp->cache < NUM_CACHES)); pages = atop(bp->b_bufsize); + + TRACEPOINT(vfs, bufcache_take, bp->b_flags, bp->cache, pages); + struct bufcache *cache = &cleancache[bp->cache]; if (!ISSET(bp->b_flags, B_DELWRI)) { if (ISSET(bp->b_flags, B_COLD)) { @@ -1756,8 +1763,11 @@ bufcache_release(struct buf *bp) int64_t pages; struct bufcache *cache = &cleancache[bp->cache]; - pages = atop(bp->b_bufsize); KASSERT(ISSET(bp->b_flags, B_BC)); + pages = atop(bp->b_bufsize); + + TRACEPOINT(vfs, bufcache_rel, bp->b_flags, bp->cache, pages); + if (fliphigh) { if (ISSET(bp->b_flags, B_DMA) && bp->cache > 0) panic("B_DMA buffer release from cache %d", |