shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-10 21:07:02 +09:00
Code Issues Packages Projects Releases Wiki Activity

media: video: tegra: add debugfs entry for tegra_rpc

Browse Source 
For now just includes the existing ports, the peer owners,
and the port and peer state.

Change-Id: I2c6b603ca02dc48acc1c763380ff0f1cb66f482b
Signed-off-by: Dima Zavin <dima@android.com>
This commit is contained in:
Dima Zavin
2010-11-08 13:58:04 -08:00
parent 1ce38cb459
commit 5b5e9b563d
2 changed files with 61 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

58
drivers/media/video/tegra/avp/tegra_rpc.c
View File

@@ -18,6 +18,7 @@
*
*/
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/err.h>
#include <linux/kref.h>
@@ -26,6 +27,7 @@
#include <linux/mutex.h>
#include <linux/rbtree.h>
#include <linux/sched.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/tegra_rpc.h>
#include <linux/types.h>
@@ -92,6 +94,7 @@ struct trpc_msg {
};
static struct tegra_rpc_info *tegra_rpc;
static struct dentry *trpc_debug_root;
static struct trpc_msg *dequeue_msg_locked(struct trpc_endpoint *ep);
@@ -704,6 +707,59 @@ void trpc_node_unregister(struct trpc_node *node)
mutex_unlock(&info->node_lock);
}
static int trpc_debug_ports_show(struct seq_file *s, void *data)
{
struct tegra_rpc_info *info = s->private;
struct rb_node *n;
unsigned long flags;
int i;
spin_lock_irqsave(&info->ports_lock, flags);
for (n = rb_first(&info->ports); n; n = rb_next(n)) {
struct trpc_port *port = rb_entry(n, struct trpc_port, rb_node);
seq_printf(s, "port: %s\n closed:%s\n", port->name,
port->closed ? "yes" : "no");
spin_lock(&port->lock);
for (i = 0; i < ARRAY_SIZE(port->peers); i++) {
struct trpc_endpoint *ep = &port->peers[i];
seq_printf(s, " peer%d: %s\n ready:%s\n", i,
ep->owner ? ep->owner->name: "<none>",
ep->ready ? "yes" : "no");
if (ep->ops && ep->ops->show)
ep->ops->show(s, ep);
}
spin_unlock(&port->lock);
}
spin_unlock_irqrestore(&info->ports_lock, flags);
return 0;
}
static int trpc_debug_ports_open(struct inode *inode, struct file *file)
{
return single_open(file, trpc_debug_ports_show, inode->i_private);
}
static struct file_operations trpc_debug_ports_fops = {
.open = trpc_debug_ports_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void trpc_debug_init(struct tegra_rpc_info *info)
{
trpc_debug_root = debugfs_create_dir("tegra_rpc", NULL);
if (IS_ERR_OR_NULL(trpc_debug_root)) {
pr_err("%s: couldn't create debug files\n", __func__);
return;
}
debugfs_create_file("ports", 0664, trpc_debug_root, info,
&trpc_debug_ports_fops);
}
static int __init tegra_rpc_init(void)
{
struct tegra_rpc_info *rpc_info;
@@ -726,6 +782,8 @@ static int __init tegra_rpc_init(void)
ret = -ENOMEM;
goto err_kmem_cache;
}
trpc_debug_init(rpc_info);
tegra_rpc = rpc_info;
return 0;

3
drivers/media/video/tegra/avp/trpc.h
View File

@@ -19,6 +19,7 @@
#define __ARM_MACH_TEGRA_RPC_H
#include <linux/list.h>
#include <linux/seq_file.h>
#include <linux/tegra_rpc.h>
struct trpc_endpoint;
@@ -29,6 +30,8 @@ struct trpc_ep_ops {
void (*notify_recv)(struct trpc_endpoint *ep);
/* close is allowed to sleep */
void (*close)(struct trpc_endpoint *ep);
/* not allowed to sleep, not allowed to call back into trpc */
void (*show)(struct seq_file *s, struct trpc_endpoint *ep);
};
enum {