xnu-2050.48.11.tar.gz

[apple/xnu.git] / osfmk / i386 / tsc.h

diff --git a/osfmk/i386/tsc.h b/osfmk/i386/tsc.h
index 2f6011b931b7c21bd663146384a26680b5a9bec3..42bb9684d1fbc5d023086016baf75c0c9214f00b 100644 (file)
--- a/osfmk/i386/tsc.h
+++ b/osfmk/i386/tsc.h
@@ -42,7 +42,7 @@
 
 #define BASE_NHM_CLOCK_SOURCE  133333333ULL
 #define IA32_PERF_STS          0x198
-#define        SLOW_TSC_THRESHOLD      1000067800      /* TSC is too slow for regular nanotime() algorithm */
+#define        SLOW_TSC_THRESHOLD      1000067800      /* if slower, nonzero shift required in nanotime() algorithm */
 
 #ifndef ASSEMBLER
 extern uint64_t        busFCvtt2n;