linux-kernel - [PATCH 3/3] Create debugfs files for statistics

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Message-Id: <20240701142851.1448515-4-luke.parkin@arm.com>
Date: Mon,  1 Jul 2024 15:28:51 +0100
From: Luke Parkin <luke.parkin@....com>
To: linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	arm-scmi@...r.kernel.org
Cc: sudeep.holla@....com,
	cristian.marussi@....com,
	Luke Parkin <luke.parkin@....com>
Subject: [PATCH 3/3] Create debugfs files for statistics

Create debugfs files for the statistics in the scmi_debug_stats struct

Signed-off-by: Luke Parkin <luke.parkin@....com>
---
 drivers/firmware/arm_scmi/driver.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index f69dff699d48..509ea42d17bf 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2884,7 +2884,7 @@ static void scmi_debugfs_common_cleanup(void *d)
 static struct scmi_debug_info *scmi_debugfs_common_setup(struct scmi_info *info)
 {
 	char top_dir[16];
-	struct dentry *trans, *top_dentry;
+	struct dentry *trans, *top_dentry, *stats;
 	struct scmi_debug_info *dbg;
 	const char *c_ptr = NULL;
 
@@ -2935,6 +2935,19 @@ static struct scmi_debug_info *scmi_debugfs_common_setup(struct scmi_info *info)
 	debugfs_create_u32("rx_max_msg", 0400, trans,
 			   (u32 *)&info->rx_minfo.max_msg);
 
+	if (IS_ENABLED(CONFIG_ARM_SCMI_DEBUG_STATISTICS)) {
+		stats = debugfs_create_dir("stats", trans);
+		debugfs_create_atomic_t("response_ok", 0400, stats,
+					&info->stats.response_ok);
+		debugfs_create_atomic_t("dlyd_response_ok", 0400, stats,
+					&info->stats.dlyd_response_ok);
+		debugfs_create_atomic_t("sent_ok", 0400, stats,
+					&info->stats.sent_ok);
+		debugfs_create_atomic_t("sent_fail", 0400, stats,
+					&info->stats.sent_fail);
+		debugfs_create_atomic_t("xfers_response_timeout", 0400, stats,
+					&info->stats.xfers_response_timeout);
+	}
 	dbg->top_dentry = top_dentry;
 
 	if (devm_add_action_or_reset(info->dev,
-- 
2.34.1