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| author | Cheng Lingfei <chenglingfei@foxmail.com> | 2026-08-24 20:45:46 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2026-08-24 06:55:59 -1000 |
| commit | 909a3f0e9d8b0d8001cf6e99808f88eca8e44328 (patch) | |
| tree | be05d18bd5619b55ff3b30f28a292907021768ee /include/trace/events/vb2.h | |
| download | linux-stable-909a3f0e9d8b0d8001cf6e99808f88eca8e44328.tar.gz linux-stable-909a3f0e9d8b0d8001cf6e99808f88eca8e44328.zip | |
docs: cgroup-v2: fix misc.events key format descriptiongrafted
In misc cgroup, misc.events does not output a simple "max" key. Instead,
each registered misc resource outputs a separate key suffixed with ".max"
(i.e., "<res>.max").
Update the documentation to clarify that the entry key is "<res>.max".
Suggested-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Cheng Lingfei <chenglingfei@foxmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/trace/events/vb2.h')
| -rw-r--r-- | include/trace/events/vb2.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/include/trace/events/vb2.h b/include/trace/events/vb2.h new file mode 100644 index 000000000..a40146dea --- /dev/null +++ b/include/trace/events/vb2.h @@ -0,0 +1,69 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#undef TRACE_SYSTEM +#define TRACE_SYSTEM vb2 + +#if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_VB2_H + +#include <linux/tracepoint.h> +#include <media/videobuf2-core.h> + +DECLARE_EVENT_CLASS(vb2_event_class, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb), + + TP_STRUCT__entry( + __field(void *, owner) + __field(u32, queued_count) + __field(int, owned_by_drv_count) + __field(u32, index) + __field(u32, type) + __field(u32, bytesused) + __field(u64, timestamp) + ), + + TP_fast_assign( + __entry->owner = q->owner; + __entry->queued_count = q->queued_count; + __entry->owned_by_drv_count = + atomic_read(&q->owned_by_drv_count); + __entry->index = vb->index; + __entry->type = vb->type; + __entry->bytesused = vb->planes[0].bytesused; + __entry->timestamp = vb->timestamp; + ), + + TP_printk("owner = %p, queued = %u, owned_by_drv = %d, index = %u, " + "type = %u, bytesused = %u, timestamp = %llu", __entry->owner, + __entry->queued_count, + __entry->owned_by_drv_count, + __entry->index, __entry->type, + __entry->bytesused, + __entry->timestamp + ) +) + +DEFINE_EVENT(vb2_event_class, vb2_buf_done, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_buf_queue, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_dqbuf, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +DEFINE_EVENT(vb2_event_class, vb2_qbuf, + TP_PROTO(struct vb2_queue *q, struct vb2_buffer *vb), + TP_ARGS(q, vb) +); + +#endif /* if !defined(_TRACE_VB2_H) || defined(TRACE_HEADER_MULTI_READ) */ + +/* This part must be outside protection */ +#include <trace/define_trace.h> |