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authorLen Brown <len.brown@intel.com>2011-04-01 15:41:17 -0400
committerLen Brown <len.brown@intel.com>2011-05-29 03:39:16 -0400
commitcdaab4a0d330f70c0e5ad8c3f7c65c2e375ea180 (patch)
treec0737c6c9106f858df5e223b168d548de1c1990e /arch
parent99c63221435963e0cee2402686ba99293c2ffa9e (diff)
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x86 idle: deprecate "no-hlt" cmdline param
We'd rather that modern machines not check if HLT works on every entry into idle, for the benefit of machines that had marginal electricals 15-years ago. If those machines are still running the upstream kernel, they can use "idle=poll". The only difference will be that they'll now invoke HLT in machine_hlt(). cc: x86@kernel.org # .39.x Signed-off-by: Len Brown <len.brown@intel.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/bugs.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index c39576cb301..525514cf33c 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -19,6 +19,7 @@
static int __init no_halt(char *s)
{
+ WARN_ONCE(1, "\"no-hlt\" is deprecated, please use \"idle=poll\"\n");
boot_cpu_data.hlt_works_ok = 0;
return 1;
}