mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 04:16:39 +07:00
0eb2c0ae57
-----BEGIN PGP SIGNATURE----- iQEcBAABAgAGBQJZdS4PAAoJEHm+PkMAQRiGbEYH/2mukTPOUAfNoWaVjO2YHxuL 5yI3n1838tKIJm967IUmGdckN/RYGPjJxvZ+muXN2/rv23+9j3LVq9vQcsYqRQop vrWP+hvGGJvOGJ2NYBDB+4AUrPPdeX9stolwyAcYvyCZ8AilPIovm4s2poA+fuQX D78c8JSfpse32oc93dy4bUz3mRFKTeufstrWEuzqXI691mthF2G9EpA0R3hlbqv+ GiUnNcZVOnOuCt/47GnpWVKsyv91l3CkGq3bV1GSUi8a/1PnyFxHQxQI/qgbkLXs NuswRupSeLDQKRgiDLgWF/BpdHEp4dpFFWXm00KWlgxeGSQnKat9bpW/d5OgnhA= =mv3H -----END PGP SIGNATURE----- Backmerge tag 'v4.13-rc2' into drm-next Linux 4.13-rc2 This is required for drm-misc fixing.
236 lines
5.7 KiB
C
236 lines
5.7 KiB
C
/*
|
|
* Sync File validation framework and debug information
|
|
*
|
|
* Copyright (C) 2012 Google, Inc.
|
|
*
|
|
* This software is licensed under the terms of the GNU General Public
|
|
* License version 2, as published by the Free Software Foundation, and
|
|
* may be copied, distributed, and modified under those terms.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include <linux/debugfs.h>
|
|
#include "sync_debug.h"
|
|
|
|
static struct dentry *dbgfs;
|
|
|
|
static LIST_HEAD(sync_timeline_list_head);
|
|
static DEFINE_SPINLOCK(sync_timeline_list_lock);
|
|
static LIST_HEAD(sync_file_list_head);
|
|
static DEFINE_SPINLOCK(sync_file_list_lock);
|
|
|
|
void sync_timeline_debug_add(struct sync_timeline *obj)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sync_timeline_list_lock, flags);
|
|
list_add_tail(&obj->sync_timeline_list, &sync_timeline_list_head);
|
|
spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
|
|
}
|
|
|
|
void sync_timeline_debug_remove(struct sync_timeline *obj)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sync_timeline_list_lock, flags);
|
|
list_del(&obj->sync_timeline_list);
|
|
spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
|
|
}
|
|
|
|
void sync_file_debug_add(struct sync_file *sync_file)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sync_file_list_lock, flags);
|
|
list_add_tail(&sync_file->sync_file_list, &sync_file_list_head);
|
|
spin_unlock_irqrestore(&sync_file_list_lock, flags);
|
|
}
|
|
|
|
void sync_file_debug_remove(struct sync_file *sync_file)
|
|
{
|
|
unsigned long flags;
|
|
|
|
spin_lock_irqsave(&sync_file_list_lock, flags);
|
|
list_del(&sync_file->sync_file_list);
|
|
spin_unlock_irqrestore(&sync_file_list_lock, flags);
|
|
}
|
|
|
|
static const char *sync_status_str(int status)
|
|
{
|
|
if (status < 0)
|
|
return "error";
|
|
|
|
if (status > 0)
|
|
return "signaled";
|
|
|
|
return "active";
|
|
}
|
|
|
|
static void sync_print_fence(struct seq_file *s,
|
|
struct dma_fence *fence, bool show)
|
|
{
|
|
struct sync_timeline *parent = dma_fence_parent(fence);
|
|
int status;
|
|
|
|
status = dma_fence_get_status_locked(fence);
|
|
|
|
seq_printf(s, " %s%sfence %s",
|
|
show ? parent->name : "",
|
|
show ? "_" : "",
|
|
sync_status_str(status));
|
|
|
|
if (test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) {
|
|
struct timespec64 ts64 =
|
|
ktime_to_timespec64(fence->timestamp);
|
|
|
|
seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
|
|
}
|
|
|
|
if (fence->ops->timeline_value_str &&
|
|
fence->ops->fence_value_str) {
|
|
char value[64];
|
|
bool success;
|
|
|
|
fence->ops->fence_value_str(fence, value, sizeof(value));
|
|
success = strlen(value);
|
|
|
|
if (success) {
|
|
seq_printf(s, ": %s", value);
|
|
|
|
fence->ops->timeline_value_str(fence, value,
|
|
sizeof(value));
|
|
|
|
if (strlen(value))
|
|
seq_printf(s, " / %s", value);
|
|
}
|
|
}
|
|
|
|
seq_putc(s, '\n');
|
|
}
|
|
|
|
static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
|
|
{
|
|
struct list_head *pos;
|
|
|
|
seq_printf(s, "%s: %d\n", obj->name, obj->value);
|
|
|
|
spin_lock_irq(&obj->lock);
|
|
list_for_each(pos, &obj->pt_list) {
|
|
struct sync_pt *pt = container_of(pos, struct sync_pt, link);
|
|
sync_print_fence(s, &pt->base, false);
|
|
}
|
|
spin_unlock_irq(&obj->lock);
|
|
}
|
|
|
|
static void sync_print_sync_file(struct seq_file *s,
|
|
struct sync_file *sync_file)
|
|
{
|
|
char buf[128];
|
|
int i;
|
|
|
|
seq_printf(s, "[%p] %s: %s\n", sync_file,
|
|
sync_file_get_name(sync_file, buf, sizeof(buf)),
|
|
sync_status_str(dma_fence_get_status(sync_file->fence)));
|
|
|
|
if (dma_fence_is_array(sync_file->fence)) {
|
|
struct dma_fence_array *array = to_dma_fence_array(sync_file->fence);
|
|
|
|
for (i = 0; i < array->num_fences; ++i)
|
|
sync_print_fence(s, array->fences[i], true);
|
|
} else {
|
|
sync_print_fence(s, sync_file->fence, true);
|
|
}
|
|
}
|
|
|
|
static int sync_debugfs_show(struct seq_file *s, void *unused)
|
|
{
|
|
struct list_head *pos;
|
|
|
|
seq_puts(s, "objs:\n--------------\n");
|
|
|
|
spin_lock_irq(&sync_timeline_list_lock);
|
|
list_for_each(pos, &sync_timeline_list_head) {
|
|
struct sync_timeline *obj =
|
|
container_of(pos, struct sync_timeline,
|
|
sync_timeline_list);
|
|
|
|
sync_print_obj(s, obj);
|
|
seq_putc(s, '\n');
|
|
}
|
|
spin_unlock_irq(&sync_timeline_list_lock);
|
|
|
|
seq_puts(s, "fences:\n--------------\n");
|
|
|
|
spin_lock_irq(&sync_file_list_lock);
|
|
list_for_each(pos, &sync_file_list_head) {
|
|
struct sync_file *sync_file =
|
|
container_of(pos, struct sync_file, sync_file_list);
|
|
|
|
sync_print_sync_file(s, sync_file);
|
|
seq_putc(s, '\n');
|
|
}
|
|
spin_unlock_irq(&sync_file_list_lock);
|
|
return 0;
|
|
}
|
|
|
|
static int sync_info_debugfs_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, sync_debugfs_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations sync_info_debugfs_fops = {
|
|
.open = sync_info_debugfs_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static __init int sync_debugfs_init(void)
|
|
{
|
|
dbgfs = debugfs_create_dir("sync", NULL);
|
|
|
|
/*
|
|
* The debugfs files won't ever get removed and thus, there is
|
|
* no need to protect it against removal races. The use of
|
|
* debugfs_create_file_unsafe() is actually safe here.
|
|
*/
|
|
debugfs_create_file_unsafe("info", 0444, dbgfs, NULL,
|
|
&sync_info_debugfs_fops);
|
|
debugfs_create_file_unsafe("sw_sync", 0644, dbgfs, NULL,
|
|
&sw_sync_debugfs_fops);
|
|
|
|
return 0;
|
|
}
|
|
late_initcall(sync_debugfs_init);
|
|
|
|
#define DUMP_CHUNK 256
|
|
static char sync_dump_buf[64 * 1024];
|
|
void sync_dump(void)
|
|
{
|
|
struct seq_file s = {
|
|
.buf = sync_dump_buf,
|
|
.size = sizeof(sync_dump_buf) - 1,
|
|
};
|
|
int i;
|
|
|
|
sync_debugfs_show(&s, NULL);
|
|
|
|
for (i = 0; i < s.count; i += DUMP_CHUNK) {
|
|
if ((s.count - i) > DUMP_CHUNK) {
|
|
char c = s.buf[i + DUMP_CHUNK];
|
|
|
|
s.buf[i + DUMP_CHUNK] = 0;
|
|
pr_cont("%s", s.buf + i);
|
|
s.buf[i + DUMP_CHUNK] = c;
|
|
} else {
|
|
s.buf[s.count] = 0;
|
|
pr_cont("%s", s.buf + i);
|
|
}
|
|
}
|
|
}
|