[alsa-devel] [PATCH] ASoC: Intel: Reduce Resource notification trace to once per minute.

[vani.ganji at intel.com]

From: Vani Ganji <vani.ganji at intel.com>

Resource notification trace "MCPS Budget violation" observed very
frequently which might cause losing critical debug information.
Added a counter to print trace on first instance and once per minute.
It is required to be notified when module resource is used more than
a threshold so enabled once per minute.

Suggested-by: Grant Grundler <grundler at google.com>
Signed-off-by: Vani Ganji <vani.ganji at intel.com>
---
 sound/soc/intel/skylake/skl-sst-ipc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/skylake/skl-sst-ipc.c b/sound/soc/intel/skylake/skl-sst-ipc.c
index 667cdddc289f..03ff0d8cea3e 100644
--- a/sound/soc/intel/skylake/skl-sst-ipc.c
+++ b/sound/soc/intel/skylake/skl-sst-ipc.c
@@ -346,6 +346,7 @@ int skl_ipc_process_notification(struct sst_generic_ipc *ipc,
 		struct skl_ipc_header header)
 {
 	struct skl_dev *skl = container_of(ipc, struct skl_dev, ipc);
+	static unsigned long j;
 
 	if (IPC_GLB_NOTIFY_MSG_TYPE(header.primary)) {
 		switch (IPC_GLB_NOTIFY_TYPE(header.primary)) {
@@ -355,12 +356,17 @@ int skl_ipc_process_notification(struct sst_generic_ipc *ipc,
 			break;
 
 		case IPC_GLB_NOTIFY_RESOURCE_EVENT:
-			dev_err(ipc->dev, "MCPS Budget Violation: %x\n",
+			/*Print trace on first instance and for every minute*/
+			if (printk_timed_ratelimit(&j, 60000)) {
+				dev_err(ipc->dev, "MCPS Budget Violation: %x\n",
 						header.primary);
+			}
 			break;
 
 		case IPC_GLB_NOTIFY_FW_READY:
 			skl->boot_complete = true;
+			/* reset timer on every FW load */
+			j = 0;
 			wake_up(&skl->boot_wait);
 			break;
 
-- 
2.17.1