Messages in this thread Patch in this message | | | Subject | [RFC][PATCH] linux-2.5.55_x86-tsc-cleanup_A0 | From | john stultz <> | Date | 09 Jan 2003 18:18:00 -0800 |
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All, This patch simply removes one more of the remaining CONFIG_X86_TSC #ifdefs from get_cycles(). It is replaced w/ a if(cpu_has_tsc) switch, so if you think this will cause a major performance impact, let me know and I'll leave it alone.
Otherwise I'll send it in for real on monday.
thanks -john
diff -Nru a/include/asm-i386/timex.h b/include/asm-i386/timex.h --- a/include/asm-i386/timex.h Thu Jan 9 17:17:17 2003 +++ b/include/asm-i386/timex.h Thu Jan 9 17:17:17 2003 @@ -40,14 +40,10 @@ static inline cycles_t get_cycles (void) { -#ifndef CONFIG_X86_TSC - return 0; -#else - unsigned long long ret; - - rdtscll(ret); + unsigned long long ret = 0; + if(cpu_has_tsc) + rdtscll(ret); return ret; -#endif } extern unsigned long cpu_khz;
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