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New kernel option nowait allows disabling the use of the wait instruction.
author
Ralf Baechle
<ralf@linux-mips.org>
Wed, 13 Jul 2005 19:22:45 +0000
(19:22 +0000)
committer
Ralf Baechle
<ralf@linux-mips.org>
Sat, 29 Oct 2005 18:31:48 +0000
(19:31 +0100)
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
arch/mips/kernel/cpu-probe.c
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diff --git
a/arch/mips/kernel/cpu-probe.c
b/arch/mips/kernel/cpu-probe.c
index
e40bd6f
..
53e4496
100644
(file)
--- a/
arch/mips/kernel/cpu-probe.c
+++ b/
arch/mips/kernel/cpu-probe.c
@@
-71,11
+71,27
@@
static void au1k_wait(void)
: : "r" (au1k_wait));
}
+static int __initdata nowait = 0;
+
+int __init wait_disable(char *s)
+{
+ nowait = 1;
+
+ return 1;
+}
+
+__setup("nowait", wait_disable);
+
static inline void check_wait(void)
{
struct cpuinfo_mips *c = ¤t_cpu_data;
printk("Checking for 'wait' instruction... ");
+ if (nowait) {
+ printk (" disabled.\n");
+ return;
+ }
+
switch (c->cputype) {
case CPU_R3081:
case CPU_R3081E: