Module Name: src
Committed By: cherry
Date: Sun Nov 25 20:56:33 UTC 2012
Modified Files:
src/sys/arch/xen/xen: evtchn.c
Log Message:
Do not escalate the local spl while taking the interrupt handler list
lock. Re-entrance is protected against within the events handler
framework by toggling interrupts/events, so we don't need (and cannot
use) the spl framework in that path. The other consumers (interrupt
registration/removal code) are not spl sensitive wrt this lock.
To generate a diff of this commit:
cvs rdiff -u -r1.64 -r1.65 src/sys/arch/xen/xen/evtchn.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/xen/xen/evtchn.c
diff -u src/sys/arch/xen/xen/evtchn.c:1.64 src/sys/arch/xen/xen/evtchn.c:1.65
--- src/sys/arch/xen/xen/evtchn.c:1.64 Sun Nov 25 08:39:36 2012
+++ src/sys/arch/xen/xen/evtchn.c Sun Nov 25 20:56:33 2012
@@ -1,4 +1,4 @@
-/* $NetBSD: evtchn.c,v 1.64 2012/11/25 08:39:36 cherry Exp $ */
+/* $NetBSD: evtchn.c,v 1.65 2012/11/25 20:56:33 cherry Exp $ */
/*
* Copyright (c) 2006 Manuel Bouyer.
@@ -54,7 +54,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: evtchn.c,v 1.64 2012/11/25 08:39:36 cherry Exp $");
+__KERNEL_RCSID(0, "$NetBSD: evtchn.c,v 1.65 2012/11/25 20:56:33 cherry Exp $");
#include "opt_xen.h"
#include "isa.h"
@@ -694,7 +694,7 @@ event_set_handler(int evtch, int (*func)
* is more explicitly implemented.
*/
evts->ev_cpu = ci;
- mutex_init(&evtlock[evtch], MUTEX_DEFAULT, IPL_HIGH);
+ mutex_init(&evtlock[evtch], MUTEX_DEFAULT, IPL_NONE);
evtsource[evtch] = evts;
if (evname)
strncpy(evts->ev_evname, evname,
