Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH] mm: cma: Use pr_err_ratelimited for CMA warning | Date | Tue, 9 Mar 2021 17:16:06 +0800 |
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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.
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com> --- mm/cma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/cma.c b/mm/cma.c index 54eee21..d101bdb 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); } -- 1.8.3.1
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