From 8a929c9eb1c298e7f12ce9062e57bd00d2c40bc3 Mon Sep 17 00:00:00 2001 From: Maarten Lankhorst Date: Wed, 19 Aug 2020 16:09:00 +0200 Subject: [PATCH] drm/i915: Use ww pinning for intel_context_create_request() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We want to get rid of intel_context_pin(), convert intel_context_create_request() first. :) Signed-off-by: Maarten Lankhorst Reviewed-by: Thomas Hellström Link: https://patchwork.freedesktop.org/patch/msgid/20200819140904.1708856-21-maarten.lankhorst@linux.intel.com Signed-off-by: Joonas Lahtinen --- drivers/gpu/drm/i915/gt/intel_context.c | 20 +++++++++++++++----- 1 file changed, 15 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c index 671081b0e4d6..61b05cd4c47a 100644 --- a/drivers/gpu/drm/i915/gt/intel_context.c +++ b/drivers/gpu/drm/i915/gt/intel_context.c @@ -449,15 +449,25 @@ int intel_context_prepare_remote_request(struct intel_context *ce, struct i915_request *intel_context_create_request(struct intel_context *ce) { + struct i915_gem_ww_ctx ww; struct i915_request *rq; int err; - err = intel_context_pin(ce); - if (unlikely(err)) - return ERR_PTR(err); + i915_gem_ww_ctx_init(&ww, true); +retry: + err = intel_context_pin_ww(ce, &ww); + if (!err) { + rq = i915_request_create(ce); + intel_context_unpin(ce); + } else if (err == -EDEADLK) { + err = i915_gem_ww_ctx_backoff(&ww); + if (!err) + goto retry; + } else { + rq = ERR_PTR(err); + } - rq = i915_request_create(ce); - intel_context_unpin(ce); + i915_gem_ww_ctx_fini(&ww); if (IS_ERR(rq)) return rq; -- 2.20.1