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New kernel option nowait allows disabling the use of the wait instruction.

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Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Ralf Baechle
2005-07-13 19:22:45 +00:00
parent 569f75bd02
commit 55d04dff0f
1 changed files with 16 additions and 0 deletions
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16
arch/mips/kernel/cpu-probe.c
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@@ -71,11 +71,27 @@ static void au1k_wait(void)
: : "r" (au1k_wait)); : : "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) static inline void check_wait(void)
{ {
struct cpuinfo_mips *c = &current_cpu_data; struct cpuinfo_mips *c = &current_cpu_data;
printk("Checking for 'wait' instruction... "); printk("Checking for 'wait' instruction... ");
if (nowait) {
printk (" disabled.\n");
return;
}
switch (c->cputype) { switch (c->cputype) {
case CPU_R3081: case CPU_R3081:
case CPU_R3081E: case CPU_R3081E: