From c5d46ee20675379105bfd1ce422fe50169106e62 Mon Sep 17 00:00:00 2001 From: Dave Gordon Date: Tue, 5 Jan 2016 12:21:33 +0000 Subject: [PATCH] drm/i915: add kerneldoc for intel_lr_context_size() This function was recently renamed & exposed, so now it gets documented Signed-off-by: Dave Gordon Signed-off-by: Daniel Vetter Link: http://patchwork.freedesktop.org/patch/msgid/1451996493-16079-1-git-send-email-david.s.gordon@intel.com --- drivers/gpu/drm/i915/intel_lrc.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/gpu/drm/i915/intel_lrc.c b/drivers/gpu/drm/i915/intel_lrc.c index 808515c..8096c6a 100644 --- a/drivers/gpu/drm/i915/intel_lrc.c +++ b/drivers/gpu/drm/i915/intel_lrc.c @@ -2399,6 +2399,20 @@ void intel_lr_context_free(struct intel_context *ctx) } } +/** + * intel_lr_context_size() - return the size of the context for an engine + * @ring: which engine to find the context size for + * + * Each engine may require a different amount of space for a context image, + * so when allocating (or copying) an image, this function can be used to + * find the right size for the specific engine. + * + * Return: size (in bytes) of an engine-specific context image + * + * Note: this size includes the HWSP, which is part of the context image + * in LRC mode, but does not include the "shared data page" used with + * GuC submission. The caller should account for this if using the GuC. + */ uint32_t intel_lr_context_size(struct intel_engine_cs *ring) { int ret = 0; -- 2.7.4