From e636c8d336489bf3eed5878299e6cc045bbad077 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 20 Feb 2024 01:17:29 +0000
Subject: [PATCH] debug lk
---
kernel/drivers/staging/greybus/loopback.c | 79 ++++-----------------------------------
1 files changed, 9 insertions(+), 70 deletions(-)
diff --git a/kernel/drivers/staging/greybus/loopback.c b/kernel/drivers/staging/greybus/loopback.c
index 42f6f3d..2471448 100644
--- a/kernel/drivers/staging/greybus/loopback.c
+++ b/kernel/drivers/staging/greybus/loopback.c
@@ -25,11 +25,8 @@
#include <linux/workqueue.h>
#include <linux/atomic.h>
#include <linux/pm_runtime.h>
-
+#include <linux/greybus.h>
#include <asm/div64.h>
-
-#include "greybus.h"
-#include "connection.h"
#define NSEC_PER_DAY 86400000000000ULL
@@ -47,8 +44,6 @@
/* We need to take a lock in atomic context */
spinlock_t lock;
- struct list_head list;
- struct list_head list_op_async;
wait_queue_head_t wq;
};
@@ -68,7 +63,6 @@
struct kfifo kfifo_lat;
struct mutex mutex;
struct task_struct *task;
- struct list_head entry;
struct device *dev;
wait_queue_head_t wq;
wait_queue_head_t wq_completion;
@@ -97,7 +91,6 @@
u32 timeout_min;
u32 timeout_max;
u32 outstanding_operations_max;
- u32 lbid;
u64 elapsed_nsecs;
u32 apbridge_latency_ts;
u32 gbphy_latency_ts;
@@ -142,10 +135,10 @@
char *buf) \
{ \
struct gb_loopback *gb = dev_get_drvdata(dev); \
- /* Report 0 for min and max if no transfer successed */ \
+ /* Report 0 for min and max if no transfer succeeded */ \
if (!gb->requests_completed) \
return sprintf(buf, "0\n"); \
- return sprintf(buf, "%"#type"\n", gb->name.field); \
+ return sprintf(buf, "%" #type "\n", gb->name.field); \
} \
static DEVICE_ATTR_RO(name##_##field)
@@ -180,7 +173,7 @@
char *buf) \
{ \
struct gb_loopback *gb = dev_get_drvdata(dev); \
- return sprintf(buf, "%"#type"\n", gb->field); \
+ return sprintf(buf, "%" #type "\n", gb->field); \
} \
static ssize_t field##_store(struct device *dev, \
struct device_attribute *attr, \
@@ -216,7 +209,7 @@
char *buf) \
{ \
struct gb_loopback *gb = dev_get_drvdata(dev); \
- return sprintf(buf, "%"#type"\n", gb->field); \
+ return sprintf(buf, "%" #type "\n", gb->field); \
} \
static ssize_t field##_store(struct device *dev, \
struct device_attribute *attr, \
@@ -886,7 +879,7 @@
gb->type = 0;
gb->send_count = 0;
sysfs_notify(&gb->dev->kobj, NULL,
- "iteration_count");
+ "iteration_count");
dev_dbg(&bundle->dev, "load test complete\n");
} else {
dev_dbg(&bundle->dev,
@@ -974,57 +967,7 @@
return gb_loopback_dbgfs_latency_show_common(s, &gb->kfifo_lat,
&gb->mutex);
}
-
-static int gb_loopback_latency_open(struct inode *inode, struct file *file)
-{
- return single_open(file, gb_loopback_dbgfs_latency_show,
- inode->i_private);
-}
-
-static const struct file_operations gb_loopback_debugfs_latency_ops = {
- .open = gb_loopback_latency_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
-
-static int gb_loopback_bus_id_compare(void *priv, struct list_head *lha,
- struct list_head *lhb)
-{
- struct gb_loopback *a = list_entry(lha, struct gb_loopback, entry);
- struct gb_loopback *b = list_entry(lhb, struct gb_loopback, entry);
- struct gb_connection *ca = a->connection;
- struct gb_connection *cb = b->connection;
-
- if (ca->bundle->intf->interface_id < cb->bundle->intf->interface_id)
- return -1;
- if (cb->bundle->intf->interface_id < ca->bundle->intf->interface_id)
- return 1;
- if (ca->bundle->id < cb->bundle->id)
- return -1;
- if (cb->bundle->id < ca->bundle->id)
- return 1;
- if (ca->intf_cport_id < cb->intf_cport_id)
- return -1;
- else if (cb->intf_cport_id < ca->intf_cport_id)
- return 1;
-
- return 0;
-}
-
-static void gb_loopback_insert_id(struct gb_loopback *gb)
-{
- struct gb_loopback *gb_list;
- u32 new_lbid = 0;
-
- /* perform an insertion sort */
- list_add_tail(&gb->entry, &gb_dev.list);
- list_sort(NULL, &gb_dev.list, gb_loopback_bus_id_compare);
- list_for_each_entry(gb_list, &gb_dev.list, entry) {
- gb_list->lbid = 1 << new_lbid;
- new_lbid++;
- }
-}
+DEFINE_SHOW_ATTRIBUTE(gb_loopback_dbgfs_latency);
#define DEBUGFS_NAMELEN 32
@@ -1084,7 +1027,7 @@
snprintf(name, sizeof(name), "raw_latency_%s",
dev_name(&connection->bundle->dev));
gb->file = debugfs_create_file(name, S_IFREG | 0444, gb_dev.root, gb,
- &gb_loopback_debugfs_latency_ops);
+ &gb_loopback_dbgfs_latency_fops);
gb->id = ida_simple_get(&loopback_ida, 0, 0, GFP_KERNEL);
if (gb->id < 0) {
@@ -1108,7 +1051,7 @@
/* Allocate kfifo */
if (kfifo_alloc(&gb->kfifo_lat, kfifo_depth * sizeof(u32),
- GFP_KERNEL)) {
+ GFP_KERNEL)) {
retval = -ENOMEM;
goto out_conn;
}
@@ -1121,7 +1064,6 @@
}
spin_lock_irqsave(&gb_dev.lock, flags);
- gb_loopback_insert_id(gb);
gb_dev.count++;
spin_unlock_irqrestore(&gb_dev.lock, flags);
@@ -1177,7 +1119,6 @@
spin_lock_irqsave(&gb_dev.lock, flags);
gb_dev.count--;
- list_del(&gb->entry);
spin_unlock_irqrestore(&gb_dev.lock, flags);
device_unregister(gb->dev);
@@ -1204,8 +1145,6 @@
{
int retval;
- INIT_LIST_HEAD(&gb_dev.list);
- INIT_LIST_HEAD(&gb_dev.list_op_async);
spin_lock_init(&gb_dev.lock);
gb_dev.root = debugfs_create_dir("gb_loopback", NULL);
--
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