| Current Path : /sys/amd64/compile/hs32/modules/usr/src/sys/modules/mvs/@/amd64/compile/hs32/modules/usr/src/sys/modules/drm/mach64/@/cddl/dev/dtrace/ |
FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/mvs/@/amd64/compile/hs32/modules/usr/src/sys/modules/drm/mach64/@/cddl/dev/dtrace/dtrace_sysctl.c |
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*
* $FreeBSD: release/9.1.0/sys/cddl/dev/dtrace/dtrace_sysctl.c 179237 2008-05-23 05:59:42Z jb $
*
*/
int dtrace_debug = 0;
TUNABLE_INT("debug.dtrace.debug", &dtrace_debug);
SYSCTL_INT(_debug_dtrace, OID_AUTO, debug, CTLFLAG_RW, &dtrace_debug, 0, "");
/* Report registered DTrace providers. */
static int
sysctl_dtrace_providers(SYSCTL_HANDLER_ARGS)
{
char *p_name = NULL;
dtrace_provider_t
*prov = dtrace_provider;
int error = 0;
size_t len = 0;
mutex_enter(&dtrace_provider_lock);
mutex_enter(&dtrace_lock);
/* Compute the length of the space-separated provider name string. */
while (prov != NULL) {
len += strlen(prov->dtpv_name) + 1;
prov = prov->dtpv_next;
}
if ((p_name = kmem_alloc(len, KM_SLEEP)) == NULL)
error = ENOMEM;
else {
/* Start with an empty string. */
*p_name = '\0';
/* Point to the first provider again. */
prov = dtrace_provider;
/* Loop through the providers, appending the names. */
while (prov != NULL) {
if (prov != dtrace_provider)
(void) strlcat(p_name, " ", len);
(void) strlcat(p_name, prov->dtpv_name, len);
prov = prov->dtpv_next;
}
}
mutex_exit(&dtrace_lock);
mutex_exit(&dtrace_provider_lock);
if (p_name != NULL) {
error = sysctl_handle_string(oidp, p_name, len, req);
kmem_free(p_name, 0);
}
return (error);
}
SYSCTL_PROC(_debug_dtrace, OID_AUTO, providers, CTLTYPE_STRING | CTLFLAG_RD,
0, 0, sysctl_dtrace_providers, "A", "");