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authorGlauber Costa <gcosta@redhat.com>2008-03-03 14:12:48 -0300
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:40:55 +0200
commit3d3f487c58ef1ece714af280b29411960908149c (patch)
tree74a117e5cf717a41ed82ca1f752b99fcb9983872
parent2513926c286ca1d0d189c206966011bdd4080354 (diff)
x86: provide hlt_works function.
In x86_64, hlt always work. in i386, we'll query the cpuinfo associated with this cpu Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
-rw-r--r--include/asm-x86/processor.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-x86/processor.h b/include/asm-x86/processor.h
index 9054734589f..8bec23c1552 100644
--- a/include/asm-x86/processor.h
+++ b/include/asm-x86/processor.h
@@ -144,6 +144,15 @@ DECLARE_PER_CPU(struct cpuinfo_x86, cpu_info);
#define current_cpu_data boot_cpu_data
#endif
+static inline int hlt_works(int cpu)
+{
+#ifdef CONFIG_X86_32
+ return cpu_data(cpu).hlt_works_ok;
+#else
+ return 1;
+#endif
+}
+
#define cache_line_size() (boot_cpu_data.x86_cache_alignment)
extern void cpu_detect(struct cpuinfo_x86 *c);