Techwizz/kernel-fxtec-pro1x
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

mm: cma: retry only on EBUSY

Browse source 
Retry the cma alloc only when alloc_contig_range returns
-EBUSY. This avoids unnecessary retries when the heap is
full.

Change-Id: If4626f0a0bc14e4b3a500283eb5a4c33b78fb6f2
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
This commit is contained in:
Vinayak Menon 2018-08-08 13:23:23 +05:30 committed by Swathi Sridhar
parent b4cda12a24
commit 098250a4cb
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
mm/cma.c
View file

@ -467,7 +467,8 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
bitmap_maxno, start, bitmap_count, mask,
offset);
if (bitmap_no >= bitmap_maxno) {
if (retry_after_sleep < max_retries) {
if ((retry_after_sleep < max_retries) &&
(ret == -EBUSY)) {
start = 0;
/*
* update max retries if available free regions