diff options
| author | Rob Clark <robdclark@chromium.org> | 2022-06-01 07:51:16 -0700 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2022-06-02 07:17:59 +0200 |
| commit | e19f8fa6ce1ca9b8b934ba7d2e8f34c95abc6e60 (patch) | |
| tree | 46bb0c427a3d01602f68ce1f42a849abec0b15a2 /kernel/dma | |
| parent | 4a37f3dd9a83186cb88d44808ab35b78375082c9 (diff) | |
| download | linux-e19f8fa6ce1ca9b8b934ba7d2e8f34c95abc6e60.tar.bz2 | |
dma-debug: make things less spammy under memory pressure
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>
Diffstat (limited to 'kernel/dma')
| -rw-r--r-- | kernel/dma/debug.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/dma/debug.c b/kernel/dma/debug.c index ac740630c79c..2caafd13f8aa 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, |