securemsm-kernel: Limit frequency of log from tzcb

Limit the rate of logs from tzcb by printing one out of 5 logs
of retries.

Change-Id: I4138ab3c4a3d8fa92ef045e9e5c7e7919253823c

smcinvoke/smcinvoke.c

@@ -27,6 +27,7 @@
 #include <linux/firmware.h>
 #include <linux/qcom_scm.h>
 #include <linux/freezer.h>
+#include <linux/ratelimit.h>
 #include <asm/cacheflush.h>
 #include <soc/qcom/qseecomi.h>
 #include <linux/qtee_shmbridge.h>
@@ -62,6 +63,18 @@
 #define SMCINVOKE_MEM_PERM_RW			6
 #define SMCINVOKE_SCM_EBUSY_WAIT_MS		30
 #define SMCINVOKE_SCM_EBUSY_MAX_RETRY		200
+#define TZCB_ERR_RATELIMIT_INTERVAL		(1*HZ)
+#define TZCB_ERR_RATELIMIT_BURST		1
+
+//print tzcb err per sec
+#define tzcb_err_ratelimited(fmt, ...) 	do {		\
+	static DEFINE_RATELIMIT_STATE(_rs, 		\
+			TZCB_ERR_RATELIMIT_INTERVAL,	\
+			TZCB_ERR_RATELIMIT_BURST);	\
+	if (__ratelimit(&_rs))				\
+		pr_err(fmt, ##__VA_ARGS__);		\
+} while(0)
+
 
 
 /* TZ defined values - Start */
@@ -1712,13 +1725,13 @@ static void process_tzcb_req(void *buf, size_t buf_len, struct file **arr_filp)
 		}
 		if (ret == 0) {
 			if (srvr_info->is_server_suspended == 0) {
-			pr_err("CBobj timed out waiting on cbtxn :%d,cb-tzhandle:%d, retry:%d, op:%d counts :%d\n",
-					cb_txn->txn_id,cb_req->hdr.tzhandle, cbobj_retries,
-					cb_req->hdr.op, cb_req->hdr.counts);
-			pr_err("CBobj %d timedout pid %x,tid %x, srvr state=%d, srvr id:%u\n",
-					cb_req->hdr.tzhandle, current->pid,
-					current->tgid, srvr_info->state,
-					srvr_info->server_id);
+				tzcb_err_ratelimited("CBobj timed out waiting on cbtxn :%d,cb-tzhandle:%d, retry:%d, op:%d counts :%d\n",
+						cb_txn->txn_id,cb_req->hdr.tzhandle, cbobj_retries,
+						cb_req->hdr.op, cb_req->hdr.counts);
+				tzcb_err_ratelimited("CBobj %d timedout pid %x,tid %x, srvr state=%d, srvr id:%u\n",
+						cb_req->hdr.tzhandle, current->pid,
+						current->tgid, srvr_info->state,
+						srvr_info->server_id);
 			}
 		} else {
 			/* wait_event returned due to a signal */