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| author | jdp <jdp@FreeBSD.org> | 1997-05-21 22:56:05 +0000 |
|---|---|---|
| committer | jdp <jdp@FreeBSD.org> | 1997-05-21 22:56:05 +0000 |
| commit | 0d42d75ea0fce2ae31edec2f6417be2847d8ff21 (patch) | |
| tree | eb0ca9cc1375257b00f5cefaeea4851e19e1cbb9 /sys/i386/include/cpufunc.h | |
| parent | ad7a8a1b0301149732c06340646840e9076fcd7c (diff) | |
| download | FreeBSD-src-0d42d75ea0fce2ae31edec2f6417be2847d8ff21.zip FreeBSD-src-0d42d75ea0fce2ae31edec2f6417be2847d8ff21.tar.gz | |
Make setbits() SMP-safe. Eliminate the SETBITS() macro, and replace
all uses of it with the equivalent calls to setbits().
This change incidentally eliminates a problem building ELF kernels
that was caused by SETBITS.
Reviewed by: fsmp, peter
Submitted by: bde
Diffstat (limited to 'sys/i386/include/cpufunc.h')
| -rw-r--r-- | sys/i386/include/cpufunc.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/sys/i386/include/cpufunc.h b/sys/i386/include/cpufunc.h index be861b2..6db8855 100644 --- a/sys/i386/include/cpufunc.h +++ b/sys/i386/include/cpufunc.h @@ -30,7 +30,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: cpufunc.h,v 1.65 1997/04/28 00:24:59 fsmp Exp $ + * $Id: cpufunc.h,v 1.66 1997/05/07 19:51:59 peter Exp $ */ /* @@ -356,7 +356,11 @@ rdtsc(void) static __inline void setbits(volatile unsigned *addr, u_int bits) { - __asm __volatile("orl %1,%0" : "=m" (*addr) : "ir" (bits)); + __asm __volatile( +#ifdef SMP + "lock; " +#endif + "orl %1,%0" : "=m" (*addr) : "ir" (bits)); } static __inline void |
