diff options
Diffstat (limited to '0011-dma-debug-make-things-less-spammy-under-memory-press.patch')
| -rw-r--r-- | 0011-dma-debug-make-things-less-spammy-under-memory-press.patch | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/0011-dma-debug-make-things-less-spammy-under-memory-press.patch b/0011-dma-debug-make-things-less-spammy-under-memory-press.patch new file mode 100644 index 000000000000..ede0dfb89e17 --- /dev/null +++ b/0011-dma-debug-make-things-less-spammy-under-memory-press.patch @@ -0,0 +1,33 @@ +From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 +From: Rob Clark <robdclark@chromium.org> +Date: Wed, 1 Jun 2022 07:51:16 -0700 +Subject: [PATCH] dma-debug: make things less spammy under memory pressure + +[ Upstream commit e19f8fa6ce1ca9b8b934ba7d2e8f34c95abc6e60 ] + +Limit the error msg to avoid flooding the console. If you have a lot of +threads hitting this at once, they could have already gotten passed the +dma_debug_disabled() check before they get to the point of allocation +failure, resulting in quite a lot of this error message spamming the +log. Use pr_err_once() to limit that. + +Signed-off-by: Rob Clark <robdclark@chromium.org> +Signed-off-by: Christoph Hellwig <hch@lst.de> +Signed-off-by: Sasha Levin <sashal@kernel.org> +--- + kernel/dma/debug.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c +index ac740630c79c2bdb4000115a6663186aca184eed..2caafd13f8aac27f92e0675d94050175c45d585d 100644 +--- a/kernel/dma/debug.c ++++ b/kernel/dma/debug.c +@@ -564,7 +564,7 @@ static void add_dma_entry(struct dma_debug_entry *entry, unsigned long attrs) + + rc = active_cacheline_insert(entry); + if (rc == -ENOMEM) { +- pr_err("cacheline tracking ENOMEM, dma-debug disabled\n"); ++ pr_err_once("cacheline tracking ENOMEM, dma-debug disabled\n"); + global_disable = true; + } else if (rc == -EEXIST && !(attrs & DMA_ATTR_SKIP_CPU_SYNC)) { + err_printk(entry->dev, entry, |