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linux/drivers/gpu/drm/i915
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Oscar Mateo 14d8ec544f drm/i915: Remove ctx->last_ring 
The original comment that introduced it said:

commit 0009e46cd5
Author: Ben Widawsky <ben@bwidawsk.net>
Date:   Fri Dec 6 14:11:02 2013 -0800

    drm/i915: Track which ring a context ran on

    Previously we dropped the association of a context to a ring. It is
    however very important to know which ring a context ran on (we could
    have reused the other member, but I was nitpicky).

    This is very important when we switch address spaces, which unlike
    context objects, do change per ring.

    As an example, if we have:

            RCS   BCS
    ctx            A
    ctx      A
    ctx      B
    ctx            B

    Without tracking the last ring B ran on, we wouldn't know to switch the
    address space on BCS in the last row.

But this is not really true, because we are already checking to != from (with
"from" being = ring->last_context) and that should be enough to make sure we
switch to the right address space.

We would have a problem if we switched the context object for every ring (since
then we would fail to do it in some situations) but we only switch it for the
render ring, so we don't care.

Signed-off-by: Oscar Mateo <oscar.mateo@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
2014-06-18 21:42:42 +02:00
..
dvo.h
dvo_ch7xxx.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ch7017.c
dvo_ivch.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_ns2501.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_sil164.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
dvo_tfp410.c drm/i915: Remove spurious semicolons 2014-04-09 21:54:33 +02:00
i915_cmd_parser.c drm/i915: Add some L3 registers to the parser whitelist 2014-06-18 00:48:35 +02:00
i915_debugfs.c drm/i915: Grab dev->struct_mutex in i915_gem_pageflip_info 2014-06-18 00:48:36 +02:00
i915_dma.c drm/i915: Replaced Blitter ring based flips with MMIO flips 2014-06-17 16:16:20 +02:00
i915_drv.c Merge branch 'topic/soix' into drm-intel-next-queued 2014-06-18 11:44:05 +02:00
i915_drv.h drm/i915: Remove ctx->last_ring 2014-06-18 21:42:42 +02:00
i915_gem.c drm/i915: Don't BUG_ON in i915_gem_obj_offset 2014-06-18 00:48:37 +02:00
i915_gem_context.c drm/i915: Remove ctx->last_ring 2014-06-18 21:42:42 +02:00
i915_gem_debug.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_dmabuf.c drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
i915_gem_evict.c drm/i915: Prevent negative relocation deltas from wrapping 2014-05-27 11:18:40 +03:00
i915_gem_execbuffer.c drm/i915: Fix __user sparse warning 2014-06-13 17:45:29 +02:00
i915_gem_gtt.c drm/i915: Added write-enable pte bit supportt 2014-06-17 09:21:47 +02:00
i915_gem_gtt.h drm/i915: Added write-enable pte bit supportt 2014-06-17 09:21:47 +02:00
i915_gem_render_state.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
i915_gem_stolen.c drm/i915: Use the .release hook to drop the stolen drm_mm tracking 2014-06-13 15:17:36 +02:00
i915_gem_tiling.c drm/i915: prefer struct drm_i915_private to drm_i915_private_t 2014-03-31 15:34:21 +02:00
i915_gem_userptr.c drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
i915_gpu_error.c drm/i915: Split the ringbuffers from the rings (2/3) 2014-05-22 23:27:25 +02:00
i915_ioc32.c drm: Remove DRM_ARRAY_SIZE() for ARRAY_SIZE() 2014-06-10 09:36:17 +10:00
i915_irq.c drm/i915/chv: Ack interrupts before handling them (CHV) 2014-06-18 00:49:37 +02:00
i915_params.c drm/i915: Replaced Blitter ring based flips with MMIO flips 2014-06-17 16:16:20 +02:00
i915_reg.h drm/i915: Add some L3 registers to the parser whitelist 2014-06-18 00:48:35 +02:00
i915_suspend.c drm/i915: disable GT power saving early during system suspend 2014-05-22 21:53:27 +02:00
i915_sysfs.c drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
i915_trace.h drm/i915: s/intel_ring_buffer/intel_engine_cs 2014-05-22 23:01:05 +02:00
i915_trace_points.c
i915_ums.c
intel_acpi.c
intel_bios.c Merge tag 'drm-intel-fixes-2014-06-06' of git://anongit.freedesktop.org/drm-intel into drm-next 2014-06-06 19:07:09 +10:00
intel_bios.h drm/i915: Detect if MIPI panel based on VBT and initialize only if present 2014-06-05 08:52:33 +02:00
intel_crt.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_ddi.c drm/i915: update BDW DDI buffer translations 2014-06-16 19:57:05 +02:00
intel_display.c drm/i915: Replaced Blitter ring based flips with MMIO flips 2014-06-17 16:16:20 +02:00
intel_dp.c drm/i915: Add missing statics to recent psr functions 2014-06-17 10:46:21 +02:00
intel_drv.h Merge branch 'topic/soix' into drm-intel-next-queued 2014-06-18 11:44:05 +02:00
intel_dsi.c drm/i915: Fix memory leak in intel_dsi_init() error path 2014-06-13 22:08:15 +02:00
intel_dsi.h drm/i915: Add support for Generic MIPI panel driver 2014-06-05 08:52:32 +02:00
intel_dsi_cmd.c drm/i915: Send DPI command explicitely in LP mode 2014-04-09 21:54:30 +02:00
intel_dsi_cmd.h drm/i915: Send DPI command explicitely in LP mode 2014-04-09 21:54:30 +02:00
intel_dsi_panel_vbt.c drm/i915: Fix checkpatch errors 2014-06-11 16:57:33 +02:00
intel_dsi_pll.c
intel_dvo.c drm/i915: Don't get hw state from DVO chip unless DVO is enabled 2014-06-13 15:17:37 +02:00
intel_fbdev.c drm/i915: Use %c in a format string for the pipe name 2014-06-13 15:17:38 +02:00
intel_hdmi.c drm/i915/chv: Force clock buffer enables 2014-06-11 16:57:30 +02:00
intel_i2c.c
intel_lvds.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_modes.c
intel_opregion.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_overlay.c Merge commit '9e9a928eed8796a0a1aaed7e0b676db86ba84594' into drm-next 2014-06-05 20:28:59 +10:00
intel_panel.c Merge commit '9e9a928eed8796a0a1aaed7e0b676db86ba84594' into drm-next 2014-06-05 20:28:59 +10:00
intel_pm.c Merge branch 'topic/soix' into drm-intel-next-queued 2014-06-18 11:44:05 +02:00
intel_renderstate.h drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_renderstate_gen6.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_renderstate_gen7.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_renderstate_gen8.c drm/i915: Simplify processing of the golden render context state 2014-06-16 19:53:09 +02:00
intel_ringbuffer.c drm/i915: Added write-enable pte bit supportt 2014-06-17 09:21:47 +02:00
intel_ringbuffer.h drm/i915: s/i915_hw_context/intel_context 2014-05-22 23:41:17 +02:00
intel_sdvo.c drm/i915: replace drm_get_connector_name() with direct name field use 2014-06-04 13:14:37 +10:00
intel_sdvo_regs.h
intel_sideband.c drm/i915: vlv/chv: fix DSI sideband register accessing 2014-05-19 17:50:14 +02:00
intel_sprite.c drm/i915: PSR HSW: update after enabling sprite. 2014-06-13 17:45:28 +02:00
intel_tv.c drm: convert crtc and connection_mutex to ww_mutex (v5) 2014-06-05 09:54:33 +10:00
intel_uncore.c Merge branch 'topic/soix' into drm-intel-next-queued 2014-06-18 11:44:05 +02:00
Kconfig drm/i915: Introduce mapping of user pages into video memory (userptr) ioctl 2014-05-16 19:31:29 +02:00
Makefile drm/i915: Add support for Generic MIPI panel driver 2014-06-05 08:52:32 +02:00