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authorZhao Yakui <yakui.zhao@intel.com>2008-06-24 17:58:53 +0800
committerAndi Kleen <andi@basil.nowhere.org>2008-07-16 23:27:05 +0200
commitc1e3b377ad48febba6f91b8ae42c44ee4d4ab45e (patch)
tree7893e4226f52c4001150066f544415c1b17741f5 /kernel/stop_machine.c
parent5b53496a5ad79e91052f72761a7c5516b069bc99 (diff)
ACPI: Create "idle=halt" bootparam
"idle=halt" limits the idle loop to using the halt instruction. No MWAIT, no IO accesses, no C-states deeper than C1. If something is broken in the idle code, "idle=halt" is a less severe workaround than "idle=poll" which disables all power savings. Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Andi Kleen <ak@linux.intel.com>
Diffstat (limited to 'kernel/stop_machine.c')
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