drivers/gpu/drm/i915/i915_trace.h
Source file repositories/reference/linux-study-clean/drivers/gpu/drm/i915/i915_trace.h
File Facts
- System
- Linux kernel
- Corpus path
drivers/gpu/drm/i915/i915_trace.h- Extension
.h- Size
- 18067 bytes
- Lines
- 727
- Domain
- Driver Families
- Bucket
- drivers/gpu
- Inferred role
- Driver Families: implementation source
- Status
- source implementation candidate
Why This File Exists
Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
- Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
- Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.
Dependency Surface
linux/stringify.hlinux/types.hlinux/tracepoint.hdrm/drm_drv.hgt/intel_engine.hi915_drv.htrace/define_trace.h
Detected Declarations
function trace_i915_request_guc_submit
Annotated Snippet
#undef TRACE_SYSTEM
#define TRACE_SYSTEM i915
#if !defined(_I915_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
#define _I915_TRACE_H_
#include <linux/stringify.h>
#include <linux/types.h>
#include <linux/tracepoint.h>
#include <drm/drm_drv.h>
#include "gt/intel_engine.h"
#include "i915_drv.h"
/* object tracking */
TRACE_EVENT(i915_gem_object_create,
TP_PROTO(struct drm_i915_gem_object *obj),
TP_ARGS(obj),
TP_STRUCT__entry(
__field(struct drm_i915_gem_object *, obj)
__field(u64, size)
),
TP_fast_assign(
__entry->obj = obj;
__entry->size = obj->base.size;
),
TP_printk("obj=%p, size=0x%llx", __entry->obj, __entry->size)
);
TRACE_EVENT(i915_gem_shrink,
TP_PROTO(struct drm_i915_private *i915, unsigned long target, unsigned flags),
TP_ARGS(i915, target, flags),
TP_STRUCT__entry(
__field(int, dev)
__field(unsigned long, target)
__field(unsigned, flags)
),
TP_fast_assign(
__entry->dev = i915->drm.primary->index;
__entry->target = target;
__entry->flags = flags;
),
TP_printk("dev=%d, target=%lu, flags=%x",
__entry->dev, __entry->target, __entry->flags)
);
TRACE_EVENT(i915_vma_bind,
TP_PROTO(struct i915_vma *vma, unsigned flags),
TP_ARGS(vma, flags),
TP_STRUCT__entry(
__field(struct drm_i915_gem_object *, obj)
__field(struct i915_address_space *, vm)
__field(u64, offset)
__field(u64, size)
__field(unsigned, flags)
),
TP_fast_assign(
__entry->obj = vma->obj;
__entry->vm = vma->vm;
__entry->offset = vma->node.start;
__entry->size = vma->node.size;
__entry->flags = flags;
),
TP_printk("obj=%p, offset=0x%016llx size=0x%llx%s vm=%p",
__entry->obj, __entry->offset, __entry->size,
__entry->flags & PIN_MAPPABLE ? ", mappable" : "",
__entry->vm)
);
TRACE_EVENT(i915_vma_unbind,
TP_PROTO(struct i915_vma *vma),
TP_ARGS(vma),
TP_STRUCT__entry(
__field(struct drm_i915_gem_object *, obj)
__field(struct i915_address_space *, vm)
__field(u64, offset)
__field(u64, size)
Annotation
- Immediate include surface: `linux/stringify.h`, `linux/types.h`, `linux/tracepoint.h`, `drm/drm_drv.h`, `gt/intel_engine.h`, `i915_drv.h`, `trace/define_trace.h`.
- Detected declarations: `function trace_i915_request_guc_submit`.
- Atlas domain: Driver Families / drivers/gpu.
- Implementation status: source implementation candidate.
- Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.