Re: [PATCH] Provide u64 version of jiffies_to_usecs() in kernel/tsacct.c

From: H. Peter Anvin
Date: Fri Dec 28 2007 - 23:52:20 EST


Jonathan Lim wrote:
It's possible that the values used in and returned from jiffies_to_usecs() are
incorrect because of truncation when variables of type u64 are involved. So a
function specific to that type is used instead.

Much worse than that. There are internal overflows in the conversions. See the patch I recently submitted to -mm.

-hpa
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/