[lkml]   [2019]   [Apr]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH 20/28] locking/lockdep: Refactorize check_noncircular and check_redundant
On Wed, Apr 24, 2019 at 06:19:26PM +0800, Yuyang Du wrote:
> These two functions now handle different check results themselves. A new
> check_path function is added to check whether there is a path in the
> dependency graph. No functional change.

This looks good, however I completely forgot we still had the redundant

It was added for cross-release (which has since been reverted) which
would generate a lot of redundant links (IIRC) but having it makes the
reports more convoluted -- basically, if we had an A-B-C relation, then
A-C will not be added to the graph because it is already covered. This
then means any report will include B, even though a shorter cycle might
have been possible.

Maybe we should make the whole redundant check depend on LOCKDEP_SMALL
for now.

 \ /
  Last update: 2019-04-25 21:49    [W:0.214 / U:0.748 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site