Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=5714d2de93fbb156c5e45fb101a2b4f0cae8fbb7 Commit: 5714d2de93fbb156c5e45fb101a2b4f0cae8fbb7 Parent: f9153ee6c71cb9ab38de3b8ed66b1c3fa27c3f7d Author: Ingo Molnar <[EMAIL PROTECTED]> AuthorDate: Mon Jul 16 09:46:31 2007 +0200 Committer: Ingo Molnar <[EMAIL PROTECTED]> CommitDate: Mon Jul 16 09:46:31 2007 +0200
[PATCH] sched: document prio_to_wmult[] document prio_to_wmult[]. Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]> --- kernel/sched.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/kernel/sched.c b/kernel/sched.c index a7284bc..90d22b7 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -748,6 +748,13 @@ static const int prio_to_weight[40] = { /* 10 */ 110, 87, 70, 56, 45, 36, 29, 23, 18, 15, }; +/* + * Inverse (2^32/x) values of the prio_to_weight[] array, precalculated. + * + * In cases where the weight does not change often, we can use the + * precalculated inverse to speed up arithmetics by turning divisions + * into multiplications: + */ static const u32 prio_to_wmult[40] = { 48356, 60446, 75558, 94446, 118058, 147573, 184467, 230589, 288233, 360285, 450347, - To unsubscribe from this list: send the line "unsubscribe git-commits-head" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html