x86: fixup cpuid for some odd (android) 32-bit variants

[fio.git] / arch / arch-x86.h

diff --git a/arch/arch-x86.h b/arch/arch-x86.h
index 69cf60b3de5f772c566d88a3cb0dfa9ba0b55d5e..49e64dd3cfa74c39570f4aabb99fe511e5e4e855 100644 (file)
--- a/arch/arch-x86.h
+++ b/arch/arch-x86.h
@@ -1,6 +1,15 @@
 #ifndef ARCH_X86_H
 #define ARCH_X86_H
 
+static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
+                           unsigned int *ecx, unsigned int *edx)
+{
+       asm volatile("xchgl %%ebx, %1\ncpuid\nxchgl %%ebx, %1"
+               : "=a" (*eax), "=r" (*ebx), "=c" (*ecx), "=d" (*edx)
+               : "0" (*eax)
+               : "memory");
+}
+
 #include "arch-x86-common.h"
 
 #define FIO_ARCH       (arch_i386)