[src/trunk]: src localcount_init() can't fail because percpu_alloc() can't fail.

[chs <chs%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7b93435b60d5
branches:  trunk
changeset: 824331:7b93435b60d5
user:      chs <chs%NetBSD.org@localhost>
date:      Fri Jun 02 00:32:12 2017 +0000

description:
localcount_init() can't fail because percpu_alloc() can't fail.
remove the check and change the return type to void.

diffstat:

 share/man/man9/localcount.9 |   6 +++---
 sys/kern/subr_localcount.c  |  10 +++-------
 sys/sys/localcount.h        |   4 ++--
 3 files changed, 8 insertions(+), 12 deletions(-)

diffs (81 lines):

diff -r 48339b6e5952 -r 7b93435b60d5 share/man/man9/localcount.9
--- a/share/man/man9/localcount.9       Fri Jun 02 00:16:27 2017 +0000
+++ b/share/man/man9/localcount.9       Fri Jun 02 00:32:12 2017 +0000
@@ -1,4 +1,4 @@
-.\"    $NetBSD: localcount.9,v 1.5 2017/05/19 11:12:50 pgoyette Exp $
+.\"    $NetBSD: localcount.9,v 1.6 2017/06/02 00:32:12 chs Exp $
 .\"
 .\" Copyright (c) 2016 The NetBSD Foundation
 .\" All rights reserved.
@@ -27,7 +27,7 @@
 .\" ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 .\" POSSIBILITY OF SUCH DAMAGE.
 .\"
-.Dd May 19, 2017
+.Dd June 1, 2017
 .Dt LOCALCOUNT 9
 .Os
 .Sh NAME
@@ -40,7 +40,7 @@
 .Nd reference-count primitives
 .Sh SYNOPSIS
 .In sys/localcount.h
-.Ft int
+.Ft void
 .Fn localcount_init "struct localcount *lc"
 .Ft void
 .Fn localcount_fini "struct localcount *lc"
diff -r 48339b6e5952 -r 7b93435b60d5 sys/kern/subr_localcount.c
--- a/sys/kern/subr_localcount.c        Fri Jun 02 00:16:27 2017 +0000
+++ b/sys/kern/subr_localcount.c        Fri Jun 02 00:32:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: subr_localcount.c,v 1.3 2017/05/19 02:20:24 pgoyette Exp $     */
+/*     $NetBSD: subr_localcount.c,v 1.4 2017/06/02 00:32:12 chs Exp $  */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -44,7 +44,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: subr_localcount.c,v 1.3 2017/05/19 02:20:24 pgoyette Exp $");
+__KERNEL_RCSID(0, "$NetBSD: subr_localcount.c,v 1.4 2017/06/02 00:32:12 chs Exp $");
 
 #include <sys/param.h>
 #include <sys/localcount.h>
@@ -66,16 +66,12 @@
  */
 static void localcount_xc(void *, void *);
 
-int
+void
 localcount_init(struct localcount *lc)
 {
 
        lc->lc_totalp = NULL;
        lc->lc_percpu = percpu_alloc(sizeof(int64_t));
-       if (lc->lc_percpu == NULL)
-               return ENOMEM;
-
-       return 0;
 }
 
 /*
diff -r 48339b6e5952 -r 7b93435b60d5 sys/sys/localcount.h
--- a/sys/sys/localcount.h      Fri Jun 02 00:16:27 2017 +0000
+++ b/sys/sys/localcount.h      Fri Jun 02 00:32:12 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: localcount.h,v 1.3 2017/05/19 11:45:40 pgoyette Exp $  */
+/*     $NetBSD: localcount.h,v 1.4 2017/06/02 00:32:12 chs Exp $       */
 
 /*-
  * Copyright (c) 2016 The NetBSD Foundation, Inc.
@@ -47,7 +47,7 @@
        struct percpu   *lc_percpu; /* int64_t */
 };
 
-int    localcount_init(struct localcount *);
+void   localcount_init(struct localcount *);
 void   localcount_drain(struct localcount *, struct kcondvar *,
            struct kmutex *);
 void   localcount_fini(struct localcount *);