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Make the sysctl kern.geom.collectstats more granular.

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Bit 0 controls statistics collection on GEOM providers.
Bit 1 controls statistics collection on GEOM consumers.

Default value is 1.

Prodded by:	scottl
This commit is contained in:
Poul-Henning Kamp 2004-06-09 19:44:44 +00:00
parent e66468ea7a
commit cf4572847a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=130280
1 changed files with 8 additions and 8 deletions
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16
sys/geom/geom_io.c
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@ -248,12 +248,12 @@ g_io_request(struct bio *bp, struct g_consumer *cp)
bp->bio_error = 0;
bp->bio_completed = 0;
if (g_collectstats) {
devstat_start_transaction_bio(cp->stat, bp);
if (g_collectstats & 1)
devstat_start_transaction_bio(pp->stat, bp);
}
cp->nstart++;
pp->nstart++;
if (g_collectstats & 2)
devstat_start_transaction_bio(cp->stat, bp);
cp->nstart++;
/* Pass it on down. */
g_trace(G_T_BIO, "bio_request(%p) from %p(%s) to %p(%s) cmd %d",
@ -289,11 +289,11 @@ g_io_deliver(struct bio *bp, int error)
(intmax_t)bp->bio_offset, (intmax_t)bp->bio_length);
bp->bio_bcount = bp->bio_length;
if (g_collectstats) {
bp->bio_resid = bp->bio_bcount - bp->bio_completed;
devstat_end_transaction_bio(cp->stat, bp);
bp->bio_resid = bp->bio_bcount - bp->bio_completed;
if (g_collectstats & 1)
devstat_end_transaction_bio(pp->stat, bp);
}
if (g_collectstats & 2)
devstat_end_transaction_bio(cp->stat, bp);
cp->nend++;
pp->nend++;