Merge pull request #13 from EricccTaiwan/main

jserv · web-flow · commit d6d95a27b8cd · 2025-04-21T12:16:58.000+08:00
Improve rate limiting for rare buffer warnings
diff --git a/main.c b/main.c
@@ -96,8 +96,9 @@ static DECLARE_WAIT_QUEUE_HEAD(rx_wait);
 static void produce_board(void)
 {
     unsigned int len = kfifo_in(&rx_fifo, draw_buffer, sizeof(draw_buffer));
-    if (unlikely(len < sizeof(draw_buffer)) && printk_ratelimit())
-        pr_warn("%s: %zu bytes dropped\n", __func__, sizeof(draw_buffer) - len);
+    if (unlikely(len < sizeof(draw_buffer)))
+        pr_warn_ratelimited("%s: %zu bytes dropped\n", __func__,
+                            sizeof(draw_buffer) - len);
 
     pr_debug("kxo: %s: in %u/%u bytes\n", __func__, len, kfifo_len(&rx_fifo));
 }

Original file line number	Diff line number	Diff line change
`@@ -96,8 +96,9 @@ static DECLARE_WAIT_QUEUE_HEAD(rx_wait);`
`96`	`96`	`static void produce_board(void)`
`97`	`97`	`{`
`98`	`98`	`unsigned int len = kfifo_in(&rx_fifo, draw_buffer, sizeof(draw_buffer));`
`99`		`- if (unlikely(len < sizeof(draw_buffer)) && printk_ratelimit())`
`100`		`- pr_warn("%s: %zu bytes dropped\n", __func__, sizeof(draw_buffer) - len);`
	`99`	`+ if (unlikely(len < sizeof(draw_buffer)))`
	`100`	`+ pr_warn_ratelimited("%s: %zu bytes dropped\n", __func__,`
	`101`	`+ sizeof(draw_buffer) - len);`
`101`	`102`
`102`	`103`	`pr_debug("kxo: %s: in %u/%u bytes\n", __func__, len, kfifo_len(&rx_fifo));`
`103`	`104`	`}`