Author: hselasky
Date: Sat Mar 7 18:23:32 2015
New Revision: 279728
URL: https://svnweb.freebsd.org/changeset/base/279728
Log:
Add mutex support to the pps_ioctl() API in the kernel.
Bump kernel version to reflect structure change.
PR: 196897
MFC after: 1 week
Modified:
head/sys/kern/kern_tc.c
head/sys/sys/param.h
head/sys/sys/timepps.h
Modified: head/sys/kern/kern_tc.c
==============================================================================
--- head/sys/kern/kern_tc.c Sat Mar 7 18:17:15 2015 (r279727)
+++ head/sys/kern/kern_tc.c Sat Mar 7 18:23:32 2015 (r279728)
@@ -23,10 +23,8 @@ __FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/limits.h>
-#ifdef FFCLOCK
#include <sys/lock.h>
#include <sys/mutex.h>
-#endif
#include <sys/sysctl.h>
#include <sys/syslog.h>
#include <sys/systm.h>
@@ -1498,7 +1496,10 @@ pps_fetch(struct pps_fetch_args *fapi, s
cseq = pps->ppsinfo.clear_sequence;
while (aseq == pps->ppsinfo.assert_sequence &&
cseq == pps->ppsinfo.clear_sequence) {
- err = tsleep(pps, PCATCH, "ppsfch", timo);
+ if (pps->mtx != NULL)
+ err = msleep(pps, pps->mtx, PCATCH, "ppsfch",
timo);
+ else
+ err = tsleep(pps, PCATCH, "ppsfch", timo);
if (err == EWOULDBLOCK && fapi->timeout.tv_sec == -1) {
continue;
} else if (err != 0) {
Modified: head/sys/sys/param.h
==============================================================================
--- head/sys/sys/param.h Sat Mar 7 18:17:15 2015 (r279727)
+++ head/sys/sys/param.h Sat Mar 7 18:23:32 2015 (r279728)
@@ -58,7 +58,7 @@
* in the range 5 to 9.
*/
#undef __FreeBSD_version
-#define __FreeBSD_version 1100062 /* Master, propagated to newvers */
+#define __FreeBSD_version 1100063 /* Master, propagated to newvers */
/*
* __FreeBSD_kernel__ indicates that this system uses the kernel of FreeBSD,
Modified: head/sys/sys/timepps.h
==============================================================================
--- head/sys/sys/timepps.h Sat Mar 7 18:17:15 2015 (r279727)
+++ head/sys/sys/timepps.h Sat Mar 7 18:23:32 2015 (r279728)
@@ -133,6 +133,8 @@ struct pps_kcbind_args {
#ifdef _KERNEL
+struct mtx;
+
struct pps_state {
/* Capture information. */
struct timehands *capth;
@@ -140,6 +142,9 @@ struct pps_state {
unsigned capgen;
unsigned capcount;
+ /* pointer to mutex protecting this state, if any */
+ struct mtx *mtx;
+
/* State information. */
pps_params_t ppsparam;
pps_info_t ppsinfo;
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