^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Sync File validation framework and debug information
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2012 Google, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "sync_debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) static struct dentry *dbgfs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) static LIST_HEAD(sync_timeline_list_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) static DEFINE_SPINLOCK(sync_timeline_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static LIST_HEAD(sync_file_list_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) static DEFINE_SPINLOCK(sync_file_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) void sync_timeline_debug_add(struct sync_timeline *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) spin_lock_irqsave(&sync_timeline_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) list_add_tail(&obj->sync_timeline_list, &sync_timeline_list_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) void sync_timeline_debug_remove(struct sync_timeline *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) spin_lock_irqsave(&sync_timeline_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) list_del(&obj->sync_timeline_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) spin_unlock_irqrestore(&sync_timeline_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) void sync_file_debug_add(struct sync_file *sync_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) spin_lock_irqsave(&sync_file_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) list_add_tail(&sync_file->sync_file_list, &sync_file_list_head);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) spin_unlock_irqrestore(&sync_file_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) void sync_file_debug_remove(struct sync_file *sync_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) spin_lock_irqsave(&sync_file_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) list_del(&sync_file->sync_file_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) spin_unlock_irqrestore(&sync_file_list_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static const char *sync_status_str(int status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) if (status < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return "error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (status > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return "signaled";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return "active";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) static void sync_print_fence(struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) struct dma_fence *fence, bool show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) struct sync_timeline *parent = dma_fence_parent(fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) int status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) status = dma_fence_get_status_locked(fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) seq_printf(s, " %s%sfence %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) show ? parent->name : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) show ? "_" : "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) sync_status_str(status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) if (test_bit(DMA_FENCE_FLAG_TIMESTAMP_BIT, &fence->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) struct timespec64 ts64 =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) ktime_to_timespec64(fence->timestamp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) seq_printf(s, "@%lld.%09ld", (s64)ts64.tv_sec, ts64.tv_nsec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (fence->ops->timeline_value_str &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) fence->ops->fence_value_str) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) char value[64];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) bool success;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) fence->ops->fence_value_str(fence, value, sizeof(value));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) success = strlen(value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) if (success) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) seq_printf(s, ": %s", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) fence->ops->timeline_value_str(fence, value,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) sizeof(value));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) if (strlen(value))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) seq_printf(s, " / %s", value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) static void sync_print_obj(struct seq_file *s, struct sync_timeline *obj)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) struct list_head *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) seq_printf(s, "%s: %d\n", obj->name, obj->value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) spin_lock_irq(&obj->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) list_for_each(pos, &obj->pt_list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct sync_pt *pt = container_of(pos, struct sync_pt, link);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) sync_print_fence(s, &pt->base, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) spin_unlock_irq(&obj->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static void sync_print_sync_file(struct seq_file *s,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) struct sync_file *sync_file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) char buf[128];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) seq_printf(s, "[%p] %s: %s\n", sync_file,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) sync_file_get_name(sync_file, buf, sizeof(buf)),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) sync_status_str(dma_fence_get_status(sync_file->fence)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) if (dma_fence_is_array(sync_file->fence)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct dma_fence_array *array = to_dma_fence_array(sync_file->fence);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) for (i = 0; i < array->num_fences; ++i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) sync_print_fence(s, array->fences[i], true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) sync_print_fence(s, sync_file->fence, true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) static int sync_info_debugfs_show(struct seq_file *s, void *unused)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct list_head *pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) seq_puts(s, "objs:\n--------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) spin_lock_irq(&sync_timeline_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) list_for_each(pos, &sync_timeline_list_head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct sync_timeline *obj =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) container_of(pos, struct sync_timeline,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) sync_timeline_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) sync_print_obj(s, obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) spin_unlock_irq(&sync_timeline_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) seq_puts(s, "fences:\n--------------\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) spin_lock_irq(&sync_file_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) list_for_each(pos, &sync_file_list_head) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct sync_file *sync_file =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) container_of(pos, struct sync_file, sync_file_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) sync_print_sync_file(s, sync_file);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) seq_putc(s, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) spin_unlock_irq(&sync_file_list_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) DEFINE_SHOW_ATTRIBUTE(sync_info_debugfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static __init int sync_debugfs_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) dbgfs = debugfs_create_dir("sync", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) * The debugfs files won't ever get removed and thus, there is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) * no need to protect it against removal races. The use of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) * debugfs_create_file_unsafe() is actually safe here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) debugfs_create_file_unsafe("info", 0444, dbgfs, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) &sync_info_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) debugfs_create_file_unsafe("sw_sync", 0644, dbgfs, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) &sw_sync_debugfs_fops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) late_initcall(sync_debugfs_init);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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