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authorBaolin Wang <baolin.wang@linux.alibaba.com>2021-05-04 18:37:22 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2021-05-05 11:27:24 -0700
commit63f83b31f4f36d933e13bd8b9a25d6d9a0cf89dd (patch)
treee4d20696b6636d382767402808d70a16af69bae4
parentbbb269206f3c914d4f23e023de4ec020abea6d1b (diff)
mm: cma: use pr_err_ratelimited for CMA warning
If we did not reserve extra CMA memory, the log buffer can be easily filled up by CMA failure warning when the devices calling dmam_alloc_coherent() to alloc DMA memory. Thus we can use pr_err_ratelimited() instead to reduce the duplicate CMA warning. Link: https://lkml.kernel.org/r/ce2251ef49e1727a9a40531d1996660b05462bd2.1615279825.git.baolin.wang@linux.alibaba.com Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> Reviewed-by: David Hildenbrand <david@redhat.com> Acked-by: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/cma.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/cma.c b/mm/cma.c
index b44a71eb3174..a862ff8c23ce 100644
--- a/mm/cma.c
+++ b/mm/cma.c
@@ -500,8 +500,8 @@ struct page *cma_alloc(struct cma *cma, size_t count, unsigned int align,
}
if (ret && !no_warn) {
- pr_err("%s: %s: alloc failed, req-size: %zu pages, ret: %d\n",
- __func__, cma->name, count, ret);
+ pr_err_ratelimited("%s: %s: alloc failed, req-size: %zu pages, ret: %d\n",
+ __func__, cma->name, count, ret);
cma_debug_show_areas(cma);
}