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- Add a kern.ktrace sysctl node.

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- Rename kern.ktrace_request_pool tunable/sysctl to
  kern.ktrace.request_pool.
- Add a variable to control the max amount of data to log for genio events.
  This variable is tunable via the tunable/sysctl kern.ktrace.genio_size
  and defaults to one page.
This commit is contained in:
John Baldwin 2002-09-11 20:49:55 +00:00
parent 4b3aac3d4e
commit 12301fc3c7
1 changed files with 9 additions and 2 deletions
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11
sys/kern/kern_ktrace.c
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@ -95,8 +95,15 @@ static int data_lengths[] = {
static STAILQ_HEAD(, ktr_request) ktr_todo;
static STAILQ_HEAD(, ktr_request) ktr_free;
SYSCTL_NODE(_kern, OID_AUTO, ktrace, CTLFLAG_RD, 0, "KTRACE options");
static uint ktr_requestpool = KTRACE_REQUEST_POOL;
TUNABLE_INT("kern.ktrace_request_pool", &ktr_requestpool);
TUNABLE_INT("kern.ktrace.request_pool", &ktr_requestpool);
static uint ktr_geniosize = PAGE_SIZE;
TUNABLE_INT("kern.ktrace.genio_size", &ktr_geniosize);
SYSCTL_UINT(_kern_ktrace, OID_AUTO, genio_size, CTLFLAG_RW, &ktr_geniosize,
0, "Maximum size of genio event payload");
static int print_message = 1;
struct mtx ktrace_mtx;
@ -164,7 +171,7 @@ sysctl_kern_ktrace_request_pool(SYSCTL_HANDLER_ARGS)
return (ENOSPC);
return (0);
}
SYSCTL_PROC(_kern, OID_AUTO, ktrace_request_pool, CTLTYPE_UINT|CTLFLAG_RW,
SYSCTL_PROC(_kern_ktrace, OID_AUTO, request_pool, CTLTYPE_UINT|CTLFLAG_RW,
&ktr_requestpool, 0, sysctl_kern_ktrace_request_pool, "IU", "");
static uint