This patch does a few small cleanups: - use PER_CPU_NAME to generate the names of per-cpu variables - use lea to add the per_cpu offset in PER_CPU(), because it doesn't affect condition flags - add PER_CPU_VAR which allows direct access to pre-cpu variables with the %fs: prefix on SMP. Signed-off-by: Jeremy Fitzhardinge <jeremy@xxxxxxxxxxxxx> Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx> Cc: Andi Kleen <ak@xxxxxxx> --- include/asm-i386/percpu.h | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) =================================================================== --- a/include/asm-i386/percpu.h +++ b/include/asm-i386/percpu.h @@ -16,12 +16,14 @@ * PER_CPU(cpu_gdt_descr, %ebx) */ #ifdef CONFIG_SMP +#define PER_CPU(var, reg) \ + movl %fs:per_cpu__##this_cpu_off, reg; \ + lea per_cpu__##var(reg), reg +#define PER_CPU_VAR(var) %fs:per_cpu__##var +#else /* ! SMP */ #define PER_CPU(var, reg) \ - movl %fs:per_cpu__this_cpu_off, reg; \ - addl $per_cpu__##var, reg -#else /* ! SMP */ -#define PER_CPU(var, reg) \ - movl $per_cpu__##var, reg; + movl $per_cpu__##var, reg +#define PER_CPU_VAR(var) per_cpu__##var #endif /* SMP */ #else /* ...!ASSEMBLY */ -- _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/virtualization
