Commit 63f83b31 authored by Baolin Wang's avatar Baolin Wang Committed by Linus Torvalds

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.comSigned-off-by: default avatarBaolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Acked-by: default avatarMinchan Kim <minchan@kernel.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent bbb26920
......@@ -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);
}
......
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