Module Name: src
Committed By: pgoyette
Date: Wed May 31 10:08:24 UTC 2017
Modified Files:
src/sys/arch/x86/x86: cpu.c
Log Message:
Partially revert previous. Rather than completely removing the loop
around calls to x86_pause(), just drastically reduce the repeat count.
It's still good to have some real delay here (among other things, for
letting the TSCs drift).
As discussed on IRC
To generate a diff of this commit:
cvs rdiff -u -r1.126 -r1.127 src/sys/arch/x86/x86/cpu.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/x86/x86/cpu.c
diff -u src/sys/arch/x86/x86/cpu.c:1.126 src/sys/arch/x86/x86/cpu.c:1.127
--- src/sys/arch/x86/x86/cpu.c:1.126 Wed May 31 00:19:17 2017
+++ src/sys/arch/x86/x86/cpu.c Wed May 31 10:08:24 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: cpu.c,v 1.126 2017/05/31 00:19:17 maya Exp $ */
+/* $NetBSD: cpu.c,v 1.127 2017/05/31 10:08:24 pgoyette Exp $ */
/*-
* Copyright (c) 2000-2012 NetBSD Foundation, Inc.
@@ -62,7 +62,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.126 2017/05/31 00:19:17 maya Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu.c,v 1.127 2017/05/31 10:08:24 pgoyette Exp $");
#include "opt_ddb.h"
#include "opt_mpbios.h" /* for MPDEBUG */
@@ -835,7 +835,9 @@ cpu_hatch(void *v)
}
x86_mwait(0, 0);
} else {
- x86_pause();
+ for (i = 100; i != 0; i--) {
+ x86_pause();
+ }
}
}
