Bug 7092

Summary:	linux-yocto: improve do_patch performance
Product:	[Build System, Metadata & Runtime] OE-Core	Reporter:	Bruce Ashfield <bruce.ashfield>
Component:	kernel	Assignee:	Bruce Ashfield <bruce.ashfield>
Status:	RESOLVED FIXED	QA Contact:
Severity:	enhancement
Priority:	Medium	CC:	bruce.ashfield, sgw, tom.zanussi
Version:	1.8
Target Milestone:	1.8 M3
Hardware:	x86
OS:	Multiple
Whiteboard:
OS type for building Yocto:	---	Type of Regression:	---
Verified:		Documentation change:	No (bug/feature does not impact docs)

Description Bruce Ashfield 2014-12-19 16:14:45 UTC

When gathering and validating the patches during do_patch() linux-yocto consumes
time with sanity checks and per-patch validation. In the majority of cases, this is
unnecessary and can be short cut / optimized.

As part of the developer experience efforts, we can make the optimized case be the
default.

Comment 1 Bruce Ashfield 2015-01-27 16:16:02 UTC

We have patches that improve the patch phase by 20 seconds, and it should be 
constant no matter how large the queue of patches to be validated. More testing
and they'll be submitted.

Comment 2 Bruce Ashfield 2015-02-17 21:10:02 UTC

The do_patch time improvements have been merged to oe-core. This is closed for 1.8.
Future work will happen under new bugzilla entries.