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| author | peter <peter@FreeBSD.org> | 2003-11-20 23:23:22 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 2003-11-20 23:23:22 +0000 |
| commit | d7a2504b1e8c12fe9c7118548f0413b9b5d920b6 (patch) | |
| tree | 7e3a93565fb21f8a6a582d45996f73e00490ee20 /sys/i386/include/pcpu.h | |
| parent | 855c7a569b45eee9a67d2709f89add780f349e48 (diff) | |
| download | FreeBSD-src-d7a2504b1e8c12fe9c7118548f0413b9b5d920b6.zip FreeBSD-src-d7a2504b1e8c12fe9c7118548f0413b9b5d920b6.tar.gz | |
MFamd64: use a less compiler-intensive MD implementation of 'curthread'
so that the compiler doesn't have to do so much work.
Approved by: re (jhb)
Diffstat (limited to 'sys/i386/include/pcpu.h')
| -rw-r--r-- | sys/i386/include/pcpu.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/sys/i386/include/pcpu.h b/sys/i386/include/pcpu.h index 1e5cba4..357f52e 100644 --- a/sys/i386/include/pcpu.h +++ b/sys/i386/include/pcpu.h @@ -151,6 +151,16 @@ extern struct pcpu *pcpup; #define PCPU_PTR(member) __PCPU_PTR(pc_ ## member) #define PCPU_SET(member, val) __PCPU_SET(pc_ ## member, val) +static __inline struct thread * +__curthread(void) +{ + struct thread *td; + + __asm __volatile("movl %%fs:0,%0" : "=r" (td)); + return (td); +} +#define curthread (__curthread()) + #else #error gcc or lint is required to use this file #endif |
