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Commit 47297943 authored by Prabhat Awasthi's avatar Prabhat Awasthi
Browse files

msm: kgsl: Add ratelimit check to limit excessive kernel logging 



In a3xx_err_callback(), ratelimit check is needed to limit error interrupt
reporting messages. This will prevent kernel logs causing watchdog timeout.

Change-Id: Id01f232fa5dd6b54e1ca9af8d6b7f37f34ed85b8
Signed-off-by: default avatarPrabhat Awasthi <pawasthi@codeaurora.org>
parent d81481d4

drivers/gpu/msm/adreno_a3xx.c

+9 −1
Original line number Diff line number Diff line
@@ -796,6 +796,8 @@ static void a3xx_err_callback(struct adreno_device *adreno_dev, int bit) 
{

	struct kgsl_device *device = &adreno_dev->dev;

	const char *err = "";

	/* Limit to 10 messages every 5 seconds */

	static DEFINE_RATELIMIT_STATE(ratelimit_state, 5 * HZ, 10);



	switch (bit) {

	case A3XX_INT_RBBM_ATB_BUS_OVERFLOW:
@@ -813,6 +815,12 @@ static void a3xx_err_callback(struct adreno_device *adreno_dev, int bit) 
	default:

		return;

	}



	/*

	* Limit error interrupt reporting to prevent

	* kernel logs causing watchdog timeout

	*/

	if (__ratelimit(&ratelimit_state))

		KGSL_DRV_CRIT(device, "%s\n", err);

}