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xen: use default_idle

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We just need the idle loop to drop into safe_halt, which default_idle()
is perfectly capable of doing.  There's no need to duplicate it.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
This commit is contained in:
Jeremy Fitzhardinge
2010-11-22 17:17:50 -08:00
parent c2d0879112
commit bc15fde77f
1 changed files with 5 additions and 15 deletions
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20
arch/x86/xen/setup.c
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@@ -250,20 +250,6 @@ char * __init xen_memory_setup(void)
return "Xen"; return "Xen";
} }
static void xen_idle(void)
{
local_irq_disable();
if (need_resched())
local_irq_enable();
else {
current_thread_info()->status &= ~TS_POLLING;
smp_mb__after_clear_bit();
safe_halt();
current_thread_info()->status |= TS_POLLING;
}
}
/* /*
* Set the bit indicating "nosegneg" library variants should be used. * Set the bit indicating "nosegneg" library variants should be used.
* We only need to bother in pure 32-bit mode; compat 32-bit processes * We only need to bother in pure 32-bit mode; compat 32-bit processes
@@ -360,7 +346,11 @@ void __init xen_arch_setup(void)
MAX_GUEST_CMDLINE > COMMAND_LINE_SIZE ? MAX_GUEST_CMDLINE > COMMAND_LINE_SIZE ?
COMMAND_LINE_SIZE : MAX_GUEST_CMDLINE); COMMAND_LINE_SIZE : MAX_GUEST_CMDLINE);
pm_idle = xen_idle; /* Set up idle, making sure it calls safe_halt() pvop */
#ifdef CONFIG_X86_32
boot_cpu_data.hlt_works_ok = 1;
#endif
pm_idle = default_idle;
fiddle_vdso(); fiddle_vdso();
} }