From 64ae074863058d8097f25465865804cadcee2bc4 Mon Sep 17 00:00:00 2001
From: Li Huang <putin.li@rock-chips.com>
Date: Wed, 18 May 2022 17:33:13 +0800
Subject: [PATCH] video: rockchip: rga3: debugger support dump pid info

Signed-off-by: Li Huang <putin.li@rock-chips.com>
Change-Id: I4ee2f64e31e33fa95ea85d0db07d55d8d3626142
---
 drivers/video/rockchip/rga3/include/rga_common.h |  2 ++
 drivers/video/rockchip/rga3/include/rga_drv.h    |  3 +++
 drivers/video/rockchip/rga3/rga_debugger.c       | 14 ++++++++++++++
 drivers/video/rockchip/rga3/rga_drv.c            |  4 ++++
 4 files changed, 23 insertions(+)

diff --git a/drivers/video/rockchip/rga3/include/rga_common.h b/drivers/video/rockchip/rga3/include/rga_common.h
index 12d15df390a2..e66e44448254 100644
--- a/drivers/video/rockchip/rga3/include/rga_common.h
+++ b/drivers/video/rockchip/rga3/include/rga_common.h
@@ -9,6 +9,8 @@
 #ifndef __LINUX_RKRGA_COMMON_H_
 #define __LINUX_RKRGA_COMMON_H_
 
+#include "rga_drv.h"
+
 #define RGA_GET_PAGE_COUNT(size) (((size) >> PAGE_SHIFT) + (((size) & (~PAGE_MASK)) ? 1 : 0))
 
 bool rga_is_rgb_format(uint32_t format);
diff --git a/drivers/video/rockchip/rga3/include/rga_drv.h b/drivers/video/rockchip/rga3/include/rga_drv.h
index 86870427fdcd..8ef7b9025425 100644
--- a/drivers/video/rockchip/rga3/include/rga_drv.h
+++ b/drivers/video/rockchip/rga3/include/rga_drv.h
@@ -42,6 +42,7 @@
 #include <linux/wait.h>
 #include <linux/pm_runtime.h>
 #include <linux/sched/mm.h>
+#include <linux/string_helpers.h>
 
 #include <asm/cacheflush.h>
 
@@ -210,6 +211,8 @@ struct rga_session {
 	int id;
 
 	pid_t tgid;
+
+	char *pname;
 };
 
 struct rga_job_buffer {
diff --git a/drivers/video/rockchip/rga3/rga_debugger.c b/drivers/video/rockchip/rga3/rga_debugger.c
index c1c6efbc91bc..8f4056262154 100644
--- a/drivers/video/rockchip/rga3/rga_debugger.c
+++ b/drivers/video/rockchip/rga3/rga_debugger.c
@@ -166,11 +166,16 @@ static int rga_version_show(struct seq_file *m, void *data)
 static int rga_load_show(struct seq_file *m, void *data)
 {
 	struct rga_scheduler_t *scheduler = NULL;
+	struct rga_session_manager *session_manager = NULL;
+	struct rga_session *session = NULL;
 	unsigned long flags;
+	int id = 0;
 	int i;
 	int load;
 	u32 busy_time_total;
 
+	session_manager = rga_drvdata->session_manager;
+
 	seq_printf(m, "num of scheduler = %d\n", rga_drvdata->num_of_scheduler);
 	seq_printf(m, "================= load ==================\n");
 
@@ -193,6 +198,15 @@ static int rga_load_show(struct seq_file *m, void *data)
 		seq_printf(m, "\t load = %d%%\n", load);
 		seq_printf(m, "-----------------------------------\n");
 	}
+
+	mutex_lock(&session_manager->lock);
+
+	idr_for_each_entry(&session_manager->ctx_id_idr, session, id)
+		seq_printf(m, "\t process %d: pid = %d, name: %s\n", id,
+			session->tgid, session->pname);
+
+	mutex_unlock(&session_manager->lock);
+
 	return 0;
 }
 
diff --git a/drivers/video/rockchip/rga3/rga_drv.c b/drivers/video/rockchip/rga3/rga_drv.c
index 0424d29ad7e3..a317eef77196 100644
--- a/drivers/video/rockchip/rga3/rga_drv.c
+++ b/drivers/video/rockchip/rga3/rga_drv.c
@@ -18,6 +18,7 @@
 
 #include "rga2_mmu_info.h"
 #include "rga_debugger.h"
+#include "rga_common.h"
 
 struct rga_drvdata_t *rga_drvdata;
 
@@ -499,6 +500,7 @@ static struct rga_session *rga_session_init(void)
 	mutex_unlock(&session_manager->lock);
 
 	session->tgid = current->tgid;
+	session->pname = kstrdup_quotable_cmdline(current, GFP_KERNEL);
 
 	return session;
 }
@@ -531,6 +533,8 @@ static int rga_session_deinit(struct rga_session *session)
 	rga_mm_session_release_buffer(session);
 
 	rga_session_free_remove_idr(session);
+
+	kfree(session->pname);
 	kfree(session);
 
 	return 0;