Module Name: src
Committed By: rmind
Date: Sun Jan 18 23:16:35 UTC 2015
Modified Files:
src/sys/kern: subr_ipi.c
src/sys/sys: ipi.h
Log Message:
Implement ipi_trigger_multi(9); requested by cherry@.
To generate a diff of this commit:
cvs rdiff -u -r1.2 -r1.3 src/sys/kern/subr_ipi.c
cvs rdiff -u -r1.2 -r1.3 src/sys/sys/ipi.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/kern/subr_ipi.c
diff -u src/sys/kern/subr_ipi.c:1.2 src/sys/kern/subr_ipi.c:1.3
--- src/sys/kern/subr_ipi.c:1.2 Sun May 25 15:34:19 2014
+++ src/sys/kern/subr_ipi.c Sun Jan 18 23:16:35 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: subr_ipi.c,v 1.2 2014/05/25 15:34:19 rmind Exp $ */
+/* $NetBSD: subr_ipi.c,v 1.3 2015/01/18 23:16:35 rmind Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -36,7 +36,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_ipi.c,v 1.2 2014/05/25 15:34:19 rmind Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_ipi.c,v 1.3 2015/01/18 23:16:35 rmind Exp $");
#include <sys/param.h>
#include <sys/types.h>
@@ -45,6 +45,7 @@ __KERNEL_RCSID(0, "$NetBSD: subr_ipi.c,v
#include <sys/evcnt.h>
#include <sys/cpu.h>
#include <sys/ipi.h>
+#include <sys/intr.h>
#include <sys/kcpuset.h>
#include <sys/kmem.h>
#include <sys/lock.h>
@@ -188,6 +189,35 @@ ipi_trigger(u_int ipi_id, struct cpu_inf
}
/*
+ * ipi_trigger_multi: same as ipi_trigger() but sends to the multiple
+ * CPUs given the target CPU set.
+ */
+void
+ipi_trigger_multi(u_int ipi_id, const kcpuset_t *target)
+{
+ const cpuid_t selfid = cpu_index(curcpu());
+ CPU_INFO_ITERATOR cii;
+ struct cpu_info *ci;
+
+ KASSERT(kpreempt_disabled());
+ KASSERT(target != NULL);
+
+ for (CPU_INFO_FOREACH(cii, ci)) {
+ const cpuid_t cpuid = cpu_index(ci);
+
+ if (!kcpuset_isset(target, cpuid) || cpuid == selfid) {
+ continue;
+ }
+ ipi_trigger(ipi_id, ci);
+ }
+ if (kcpuset_isset(target, selfid)) {
+ int s = splhigh();
+ ipi_cpu_handler();
+ splx(s);
+ }
+}
+
+/*
* put_msg: insert message into the mailbox.
*/
static inline void
Index: src/sys/sys/ipi.h
diff -u src/sys/sys/ipi.h:1.2 src/sys/sys/ipi.h:1.3
--- src/sys/sys/ipi.h:1.2 Sun May 25 15:34:19 2014
+++ src/sys/sys/ipi.h Sun Jan 18 23:16:35 2015
@@ -1,4 +1,4 @@
-/* $NetBSD: ipi.h,v 1.2 2014/05/25 15:34:19 rmind Exp $ */
+/* $NetBSD: ipi.h,v 1.3 2015/01/18 23:16:35 rmind Exp $ */
/*-
* Copyright (c) 2014 The NetBSD Foundation, Inc.
@@ -67,6 +67,7 @@ void cpu_ipi(struct cpu_info *);
u_int ipi_register(ipi_func_t, void *);
void ipi_unregister(u_int);
void ipi_trigger(u_int, struct cpu_info *);
+void ipi_trigger_multi(u_int, const kcpuset_t *);
/* Public interface: synchronous IPIs. */
void ipi_unicast(ipi_msg_t *, struct cpu_info *);
