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devstat: Remove DTrace io probes lacking a BIO reference

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The io:::start and end probes trace individual I/O requests.

Also remove the unimplemented wait-start and wait-done probes.

PR:		266098
MFC after:	1 week
This commit is contained in:
Mark Johnston 2022-08-29 13:22:36 -04:00
parent 09a2fce092
commit 32faf071bd
1 changed files with 0 additions and 10 deletions
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10
sys/kern/subr_devstat.c
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@ -52,17 +52,9 @@ SDT_PROVIDER_DEFINE(io);
SDT_PROBE_DEFINE2(io, , , start, "struct bio *", "struct devstat *");
SDT_PROBE_DEFINE2(io, , , done, "struct bio *", "struct devstat *");
SDT_PROBE_DEFINE2(io, , , wait__start, "struct bio *",
"struct devstat *");
SDT_PROBE_DEFINE2(io, , , wait__done, "struct bio *",
"struct devstat *");
#define DTRACE_DEVSTAT_START() SDT_PROBE2(io, , , start, NULL, ds)
#define DTRACE_DEVSTAT_BIO_START() SDT_PROBE2(io, , , start, bp, ds)
#define DTRACE_DEVSTAT_DONE() SDT_PROBE2(io, , , done, NULL, ds)
#define DTRACE_DEVSTAT_BIO_DONE() SDT_PROBE2(io, , , done, bp, ds)
#define DTRACE_DEVSTAT_WAIT_START() SDT_PROBE2(io, , , wait__start, NULL, ds)
#define DTRACE_DEVSTAT_WAIT_DONE() SDT_PROBE2(io, , , wait__done, NULL, ds)
static int devstat_num_devs;
static long devstat_generation = 1;
@ -245,7 +237,6 @@ devstat_start_transaction(struct devstat *ds, const struct bintime *now)
binuptime(&ds->busy_from);
}
atomic_add_rel_int(&ds->sequence0, 1);
DTRACE_DEVSTAT_START();
}
void
@ -341,7 +332,6 @@ devstat_end_transaction(struct devstat *ds, uint32_t bytes,
ds->end_count++;
atomic_add_rel_int(&ds->sequence0, 1);
DTRACE_DEVSTAT_DONE();
}
void