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| author | Len Brown <len.brown@intel.com> | 2011-04-01 15:41:17 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2011-05-29 03:39:16 -0400 |
| commit | cdaab4a0d330f70c0e5ad8c3f7c65c2e375ea180 (patch) | |
| tree | c0737c6c9106f858df5e223b168d548de1c1990e /arch | |
| parent | 99c63221435963e0cee2402686ba99293c2ffa9e (diff) | |
| download | lwn-cdaab4a0d330f70c0e5ad8c3f7c65c2e375ea180.tar.gz lwn-cdaab4a0d330f70c0e5ad8c3f7c65c2e375ea180.zip | |
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.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c index c39576cb3018..525514cf33c3 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; } |