Date: Tue, 2 Dec 2003 17:26:50 -0800 (PST) From: Peter Wemm <peter@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 43334 for review Message-ID: <200312030126.hB31QoKU091769@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=43334 Change 43334 by peter@peter_overcee on 2003/12/02 17:26:48 in theory, cause the double-ffs operations for the 64 run queues to be done with one ffsl rather than two ffs operations and a loop. Affected files ... .. //depot/projects/hammer/sys/amd64/include/runq.h#5 edit Differences ... ==== //depot/projects/hammer/sys/amd64/include/runq.h#5 (text+ko) ==== @@ -29,18 +29,18 @@ #ifndef _MACHINE_RUNQ_H_ #define _MACHINE_RUNQ_H_ -#define RQB_LEN (2) /* Number of priority status words. */ -#define RQB_L2BPW (5) /* Log2(sizeof(rqb_word_t) * NBBY)). */ +#define RQB_LEN (1) /* Number of priority status words. */ +#define RQB_L2BPW (6) /* Log2(sizeof(rqb_word_t) * NBBY)). */ #define RQB_BPW (1<<RQB_L2BPW) /* Bits in an rqb_word_t. */ #define RQB_BIT(pri) (1 << ((pri) & (RQB_BPW - 1))) #define RQB_WORD(pri) ((pri) >> RQB_L2BPW) -#define RQB_FFS(word) (ffs(word) - 1) +#define RQB_FFS(word) (ffsl(word) - 1) /* * Type of run queue status word. */ -typedef u_int32_t rqb_word_t; +typedef u_int64_t rqb_word_t; #endif
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