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drm/i915: Remove access to global seqno in the HWSP

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Stop accessing the HWSP to read the global seqno, and stop tracking the
mirror in the engine's execution timeline -- it is unused.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190226094922.31617-2-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson
2019-02-26 09:49:20 +00:00
parent 89531e7d8e
commit 8892f47742
10 changed files with 19 additions and 104 deletions
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21
drivers/gpu/drm/i915/intel_lrc.c
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@@ -528,13 +528,12 @@ static void execlists_submit_ports(struct intel_engine_cs *engine)
desc = execlists_update_context(rq);
GEM_DEBUG_EXEC(port[n].context_id = upper_32_bits(desc));
GEM_TRACE("%s in[%d]: ctx=%d.%d, global=%d (fence %llx:%lld) (current %d:%d), prio=%d\n",
GEM_TRACE("%s in[%d]: ctx=%d.%d, global=%d (fence %llx:%lld) (current %d), prio=%d\n",
engine->name, n,
port[n].context_id, count,
rq->global_seqno,
rq->fence.context, rq->fence.seqno,
hwsp_seqno(rq),
intel_engine_get_seqno(engine),
rq_prio(rq));
} else {
GEM_BUG_ON(!n);
@@ -840,13 +839,12 @@ execlists_cancel_port_requests(struct intel_engine_execlists * const execlists)
while (num_ports-- && port_isset(port)) {
struct i915_request *rq = port_request(port);
GEM_TRACE("%s:port%u global=%d (fence %llx:%lld), (current %d:%d)\n",
GEM_TRACE("%s:port%u global=%d (fence %llx:%lld), (current %d)\n",
rq->engine->name,
(unsigned int)(port - execlists->port),
rq->global_seqno,
rq->fence.context, rq->fence.seqno,
hwsp_seqno(rq),
intel_engine_get_seqno(rq->engine));
hwsp_seqno(rq));
GEM_BUG_ON(!execlists->active);
execlists_context_schedule_out(rq,
@@ -902,8 +900,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
struct rb_node *rb;
unsigned long flags;
GEM_TRACE("%s current %d\n",
engine->name, intel_engine_get_seqno(engine));
GEM_TRACE("%s\n", engine->name);
/*
* Before we call engine->cancel_requests(), we should have exclusive
@@ -952,10 +949,6 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
kmem_cache_free(engine->i915->priorities, p);
}
intel_write_status_page(engine,
I915_GEM_HWS_INDEX,
intel_engine_last_submit(engine));
/* Remaining _unready_ requests will be nop'ed when submitted */
execlists->queue_priority_hint = INT_MIN;
@@ -1071,14 +1064,13 @@ static void process_csb(struct intel_engine_cs *engine)
EXECLISTS_ACTIVE_USER));
rq = port_unpack(port, &count);
GEM_TRACE("%s out[0]: ctx=%d.%d, global=%d (fence %llx:%lld) (current %d:%d), prio=%d\n",
GEM_TRACE("%s out[0]: ctx=%d.%d, global=%d (fence %llx:%lld) (current %d), prio=%d\n",
engine->name,
port->context_id, count,
rq ? rq->global_seqno : 0,
rq ? rq->fence.context : 0,
rq ? rq->fence.seqno : 0,
rq ? hwsp_seqno(rq) : 0,
intel_engine_get_seqno(engine),
rq ? rq_prio(rq) : 0);
/* Check the context/desc id for this event matches */
@@ -1946,10 +1938,9 @@ static void execlists_reset(struct intel_engine_cs *engine, bool stalled)
/* Following the reset, we need to reload the CSB read/write pointers */
reset_csb_pointers(&engine->execlists);
GEM_TRACE("%s seqno=%d, current=%d, stalled? %s\n",
GEM_TRACE("%s seqno=%d, stalled? %s\n",
engine->name,
rq ? rq->global_seqno : 0,
intel_engine_get_seqno(engine),
yesno(stalled));
if (!rq)
goto out_unlock;