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drm/i915: Add in-flight request details to intel_engine_dump() 

In the intel_engine_cs dumper, we were showing the request details for
the request queue but not of those requests already passed to the hw
(just a summary of the seqno). If we show those details, we can then
eliminate the entirely redundant and forgotten debugfs/i915_gem_request

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Jeff McGee <jeff.mcgee@intel.com>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171015204310.17045-1-chris@chris-wilson.co.uk
Reviewed-by: Jeff McGee <jeff.mcgee@intel.com>
This commit is contained in:
Chris Wilson 2017-10-15 21:43:10 +01:00
parent 6f74b36b92
commit a27d5a44ec
2 changed files with 19 additions and 65 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/i915/i915_debugfs.c
View File

@ -664,54 +664,6 @@ static int i915_gem_batch_pool_info(struct seq_file *m, void *data)
return 0;
}
static void print_request(struct seq_file *m,
struct drm_i915_gem_request *rq,
const char *prefix)
{
seq_printf(m, "%s%x [%x:%x] prio=%d @ %dms: %s\n", prefix,
rq->global_seqno, rq->ctx->hw_id, rq->fence.seqno,
rq->priotree.priority,
jiffies_to_msecs(jiffies - rq->emitted_jiffies),
rq->timeline->common->name);
}
static int i915_gem_request_info(struct seq_file *m, void *data)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_device *dev = &dev_priv->drm;
struct drm_i915_gem_request *req;
struct intel_engine_cs *engine;
enum intel_engine_id id;
int ret, any;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
return ret;
any = 0;
for_each_engine(engine, dev_priv, id) {
int count;
count = 0;
list_for_each_entry(req, &engine->timeline->requests, link)
count++;
if (count == 0)
continue;
seq_printf(m, "%s requests: %d\n", engine->name, count);
list_for_each_entry(req, &engine->timeline->requests, link)
print_request(m, req, " ");
any++;
}
mutex_unlock(&dev->struct_mutex);
if (any == 0)
seq_puts(m, "No requests\n");
return 0;
}
static void i915_ring_seqno_info(struct seq_file *m,
struct intel_engine_cs *engine)
{
@ -4783,7 +4735,6 @@ static const struct drm_info_list i915_debugfs_list[] = {
{"i915_gem_objects", i915_gem_object_info, 0},
{"i915_gem_gtt", i915_gem_gtt_info, 0},
{"i915_gem_stolen", i915_gem_stolen_list_info },
{"i915_gem_request", i915_gem_request_info, 0},
{"i915_gem_seqno", i915_gem_seqno_info, 0},
{"i915_gem_fence_regs", i915_gem_fence_regs_info, 0},
{"i915_gem_interrupt", i915_interrupt_info, 0},

35
drivers/gpu/drm/i915/intel_engine_cs.c
View File

@ -1623,8 +1623,10 @@ static void print_request(struct drm_printer *m,
struct drm_i915_gem_request *rq,
const char *prefix)
{
drm_printf(m, "%s%x [%x:%x] prio=%d @ %dms: %s\n", prefix,
rq->global_seqno, rq->ctx->hw_id, rq->fence.seqno,
drm_printf(m, "%s%x%s [%x:%x] prio=%d @ %dms: %s\n", prefix,
rq->global_seqno,
i915_gem_request_completed(rq) ? "!" : "",
rq->ctx->hw_id, rq->fence.seqno,
rq->priotree.priority,
jiffies_to_msecs(jiffies - rq->emitted_jiffies),
rq->timeline->common->name);
@ -1632,8 +1634,9 @@ static void print_request(struct drm_printer *m,
void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
{
struct intel_breadcrumbs *b = &engine->breadcrumbs;
struct i915_gpu_error *error = &engine->i915->gpu_error;
struct intel_breadcrumbs * const b = &engine->breadcrumbs;
const struct intel_engine_execlists * const execlists = &engine->execlists;
struct i915_gpu_error * const error = &engine->i915->gpu_error;
struct drm_i915_private *dev_priv = engine->i915;
struct drm_i915_gem_request *rq;
struct rb_node *rb;
@ -1697,7 +1700,6 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
if (i915_modparams.enable_execlists) {
const u32 *hws = &engine->status_page.page_addr[I915_HWS_CSB_BUF0_INDEX];
struct intel_engine_execlists * const execlists = &engine->execlists;
u32 ptr, read, write;
unsigned int idx;
@ -1745,17 +1747,6 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
}
}
rcu_read_unlock();
spin_lock_irq(&engine->timeline->lock);
for (rb = execlists->first; rb; rb = rb_next(rb)) {
struct i915_priolist *p =
rb_entry(rb, typeof(*p), node);
list_for_each_entry(rq, &p->requests,
priotree.link)
print_request(m, rq, "\t\tQ ");
}
spin_unlock_irq(&engine->timeline->lock);
} else if (INTEL_GEN(dev_priv) > 6) {
drm_printf(m, "\tPP_DIR_BASE: 0x%08x\n",
I915_READ(RING_PP_DIR_BASE(engine)));
@ -1765,6 +1756,18 @@ void intel_engine_dump(struct intel_engine_cs *engine, struct drm_printer *m)
I915_READ(RING_PP_DIR_DCLV(engine)));
}
spin_lock_irq(&engine->timeline->lock);
list_for_each_entry(rq, &engine->timeline->requests, link)
print_request(m, rq, "\t\tE ");
for (rb = execlists->first; rb; rb = rb_next(rb)) {
struct i915_priolist *p =
rb_entry(rb, typeof(*p), node);
list_for_each_entry(rq, &p->requests, priotree.link)
print_request(m, rq, "\t\tQ ");
}
spin_unlock_irq(&engine->timeline->lock);
spin_lock_irq(&b->rb_lock);
for (rb = rb_first(&b->waiters); rb; rb = rb_next(rb)) {
struct intel_wait *w = rb_entry(rb, typeof(*w), node);