mirror of https://github.com/OpenIPC/firmware.git
263 lines
6.6 KiB
Diff
263 lines
6.6 KiB
Diff
--- linux-4.9.37/drivers/fence/sync_debug.c 1970-01-01 03:00:00.000000000 +0300
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+++ linux-4.9.y/drivers/fence/sync_debug.c 2021-06-07 13:01:33.000000000 +0300
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@@ -0,0 +1,259 @@
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+/*
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+ * drivers/base/sync.c
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+ *
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+ * Copyright (C) 2012 Google, Inc.
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+ *
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+ * This software is licensed under the terms of the GNU General Public
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+ * License version 2, as published by the Free Software Foundation, and
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+ * may be copied, distributed, and modified under those terms.
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+ *
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+ * This program is distributed in the hope that it will be useful,
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+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+ * GNU General Public License for more details.
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+ *
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+ */
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+#include <linux/debugfs.h>
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+#include <linux/export.h>
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+#include <linux/file.h>
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+#include <linux/fs.h>
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+#include <linux/kernel.h>
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+#include <linux/poll.h>
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+#include <linux/module.h>
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+#include <linux/sched.h>
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+#include <linux/seq_file.h>
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+#include <linux/slab.h>
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+#include <linux/uaccess.h>
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+#include <linux/anon_inodes.h>
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+#include <linux/time64.h>
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+#include "sync.h"
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+
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+#ifdef CONFIG_DEBUG_FS
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+
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+static LIST_HEAD(sync_timeline_list_head);
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+static DEFINE_SPINLOCK(sync_timeline_list_lock);
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+#if 0
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+static LIST_HEAD(sync_fence_list_head);
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+static DEFINE_SPINLOCK(sync_fence_list_lock);
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+#endif
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+
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+void bsp_sync_timeline_debug_add(struct sync_timeline *obj)
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+{
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&sync_timeline_list_lock, flags);
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+ list_add_tail(&obj->sync_timeline_list, &sync_timeline_list_head);
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+ spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
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+}
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+
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+void bsp_sync_timeline_debug_remove(struct sync_timeline *obj)
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+{
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&sync_timeline_list_lock, flags);
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+ list_del(&obj->sync_timeline_list);
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+ spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
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+}
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+
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+#if 0
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+void bsp_sync_fence_debug_add(struct sync_fence *fence)
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+{
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&sync_fence_list_lock, flags);
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+ list_add_tail(&fence->sync_fence_list, &sync_fence_list_head);
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+ spin_unlock_irqrestore(&sync_fence_list_lock, flags);
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+}
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+
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+void bsp_sync_fence_debug_remove(struct sync_fence *fence)
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+{
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+ unsigned long flags;
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+
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+ spin_lock_irqsave(&sync_fence_list_lock, flags);
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+ list_del(&fence->sync_fence_list);
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+ spin_unlock_irqrestore(&sync_fence_list_lock, flags);
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+}
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+#endif
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+
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+static const char *sync_status_str(int status)
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+{
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+ if (status == 0)
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+ return "signaled";
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+
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+ if (status > 0)
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+ return "active";
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+
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+ return "error";
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+}
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+
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+static void sync_print_pt(struct seq_file *s, struct sync_pt *pt, bool fence)
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+{
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+ int status = 1;
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+ struct sync_timeline *parent = sync_pt_parent(pt);
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+
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+ if (fence_is_signaled_locked(&pt->base))
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+ status = pt->base.status;
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+
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+ seq_printf(s, " %s%spt %s",
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+ fence ? parent->name : "",
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+ fence ? "_" : "",
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+ sync_status_str(status));
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+
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+ if (status <= 0) {
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+ struct timespec64 ts64 =
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+ ktime_to_timespec64(pt->base.timestamp);
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+
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+ seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
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+ }
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+
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+ if (parent->ops->timeline_value_str &&
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+ parent->ops->pt_value_str) {
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+ char value[64];
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+
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+ parent->ops->pt_value_str(pt, value, sizeof(value));
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+ seq_printf(s, ": %s", value);
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+ if (fence) {
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+ parent->ops->timeline_value_str(parent, value,
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+ sizeof(value));
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+ seq_printf(s, " / %s", value);
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+ }
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+ }
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+
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+ seq_puts(s, "\n");
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+}
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+
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+static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
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+{
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+ struct list_head *pos = NULL;
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+ unsigned long flags;
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+
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+ seq_printf(s, "%s %s", obj->name, obj->ops->driver_name);
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+
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+ if (obj->ops->timeline_value_str) {
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+ char value[64];
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+
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+ obj->ops->timeline_value_str(obj, value, sizeof(value));
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+ seq_printf(s, ": %s", value);
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+ }
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+
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+ seq_puts(s, "\n");
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+
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+ spin_lock_irqsave(&obj->child_list_lock, flags);
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+ list_for_each(pos, &obj->child_list_head) {
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+ struct sync_pt *pt =
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+ container_of(pos, struct sync_pt, child_list);
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+ sync_print_pt(s, pt, false);
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+ }
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+ spin_unlock_irqrestore(&obj->child_list_lock, flags);
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+}
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+#if 0
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+static void sync_print_fence(struct seq_file *s, struct sync_fence *fence)
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+{
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+ wait_queue_t *pos;
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+ unsigned long flags;
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+ int i;
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+
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+ seq_printf(s, "[%p] %s: %s\n", fence, fence->name,
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+ sync_status_str(atomic_read(&fence->status)));
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+
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+ for (i = 0; i < fence->num_fences; ++i) {
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+ struct sync_pt *pt =
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+ container_of(fence->cbs[i].sync_pt,
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+ struct sync_pt, base);
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+
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+ sync_print_pt(s, pt, true);
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+ }
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+
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+ spin_lock_irqsave(&fence->wq.lock, flags);
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+ list_for_each_entry(pos, &fence->wq.task_list, task_list) {
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+ struct sync_fence_waiter *waiter;
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+
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+ if (pos->func != &bsp_sync_fence_wake_up_wq)
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+ continue;
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+
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+ waiter = container_of(pos, struct sync_fence_waiter, work);
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+
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+ seq_printf(s, "waiter %pF\n", waiter->callback);
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+ }
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+ spin_unlock_irqrestore(&fence->wq.lock, flags);
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+}
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+#endif
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+static int sync_debugfs_show(struct seq_file *s, void *unused)
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+{
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+ unsigned long flags;
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+ struct list_head *pos = NULL;
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+
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+ seq_puts(s, "objs:\n--------------\n");
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+
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+ spin_lock_irqsave(&sync_timeline_list_lock, flags);
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+ list_for_each(pos, &sync_timeline_list_head) {
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+ struct sync_timeline *obj =
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+ container_of(pos, struct sync_timeline,
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+ sync_timeline_list);
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+
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+ sync_print_obj(s, obj);
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+ seq_puts(s, "\n");
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+ }
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+ spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
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+
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+ seq_puts(s, "fences:\n--------------\n");
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+#if 0
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+ spin_lock_irqsave(&sync_fence_list_lock, flags);
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+ list_for_each(pos, &sync_fence_list_head) {
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+ struct sync_fence *fence =
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+ container_of(pos, struct sync_fence, sync_fence_list);
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+
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+ sync_print_fence(s, fence);
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+ seq_puts(s, "\n");
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+ }
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+ spin_unlock_irqrestore(&sync_fence_list_lock, flags);
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+#endif
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+ return 0;
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+}
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+
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+static int sync_debugfs_open(struct inode *inode, struct file *file)
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+{
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+ return single_open(file, sync_debugfs_show, inode->i_private);
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+}
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+
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+static const struct file_operations sync_debugfs_fops = {
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+ .open = sync_debugfs_open,
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+ .read = seq_read,
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+ .llseek = seq_lseek,
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+ .release = single_release,
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+};
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+
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+static int __init _sync_debugfs_init(void)
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+{
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+ debugfs_create_file("sync", S_IRUGO, NULL, NULL, &sync_debugfs_fops);
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+ return 0;
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+}
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+module_init(_sync_debugfs_init);
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+
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+#define DUMP_CHUNK 256
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+static char sync_dump_buf[64 * 1024];
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+void bsp_sync_dump(void)
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+{
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+ struct seq_file s = {
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+ .buf = sync_dump_buf,
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+ .size = sizeof(sync_dump_buf) - 1,
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+ };
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+ int i;
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+
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+ sync_debugfs_show(&s, NULL);
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+
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+ for (i = 0; i < s.count; i += DUMP_CHUNK) {
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+ if (((s.count - i) > DUMP_CHUNK) && (i + DUMP_CHUNK < sizeof(sync_dump_buf))) {
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+ char c = s.buf[i + DUMP_CHUNK];
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+
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+ s.buf[i + DUMP_CHUNK] = 0;
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+ pr_cont("%s", s.buf + i);
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+ s.buf[i + DUMP_CHUNK] = c;
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+ } else {
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+ s.buf[s.count] = 0;
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+ pr_cont("%s", s.buf + i);
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+ }
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+ }
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+}
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+
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+#endif
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