linux_dsm_epyc7002

mirror of https://github.com/AuxXxilium/linux_dsm_epyc7002.git synced 2025-03-11 12:29:14 +07:00

History

Daniel Vetter 677feac291 drm/i915: optionally disable shrinker lock stealing commit `5774506f15` Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Wed Nov 21 13:04:04 2012 +0000 drm/i915: Borrow our struct_mutex for the direct reclaim added a nice trick to steal the struct_mutex lock in the shrinker if it's the current task holding it. But this also caused the requirement that every place which allocates memory needs to be careful about the gem state of objects, since the shrinker could have pulled the rug out from under it. We've usually solved this by carefully preallocating things or ensure that buffers are pinned already. But the shrinker also reaps mmap offset, so allocating those needs to be careful, too. Now that code has been factored out into some common helpers, so either we have fragile code depending upon the common helper not doing something we don't want it to do. Or we need to reimplement the mmap offset creation and so also leak implementation details into our code. Since this all results in leaky abstraction, cop out by disabling the lock borrowing trick while calling down into the helpers. That way our craziness is nicely confined to files in drm/i915. v2: Split out the change to create_mmap_offset as request by Chris Wilson. Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>		2012-12-20 14:56:04 +01:00
..
ast	drm/ttm: remove ttm_buffer_object->buffer_start	2012-11-20 16:06:19 +10:00
cirrus	drm/cirrus: check alloc_apertures() success in cirrus_kick_out_firmware_fb()	2012-11-20 16:06:23 +10:00
exynos
gma500
i2c
i810
i915	drm/i915: optionally disable shrinker lock stealing	2012-12-20 14:56:04 +01:00
mga
mgag200	drm/mgag200: remove unneeded aper->count assignment after alloc_apertures()	2012-11-20 16:06:26 +10:00
nouveau	drm/ttm: remove sync_arg from driver functions	2012-11-20 16:10:10 +10:00
r128
radeon	drm/ttm: remove sync_arg from driver functions	2012-11-20 16:10:10 +10:00
savage
shmobile
sis
tdfx
tegra	drm: tegra: Add HDMI support	2012-11-20 15:43:53 +10:00
ttm	drm/ttm: alter cpu_writers to return -EBUSY in ttm_execbuf_util reservations	2012-11-20 16:17:35 +10:00
udl	drm/udl: Add missing static storage class specifiers in udl_connector.c	2012-11-20 15:41:49 +10:00
via
vmwgfx	drm/vmwgfx: Make vmw_dmabuf_unreference handle NULL objects	2012-11-20 16:19:59 +10:00
ati_pcigart.c
drm_agpsupport.c
drm_auth.c
drm_buffer.c
drm_bufs.c
drm_cache.c
drm_context.c
drm_crtc_helper.c	drm: don't unnecessarily enable the polling work	2012-11-20 16:06:42 +10:00
drm_crtc.c	drm: properly init/reset connector status	2012-11-20 15:51:06 +10:00
drm_debugfs.c
drm_dma.c
drm_dp_helper.c
drm_drv.c
drm_edid_load.c
drm_edid_modes.h
drm_edid.c	drm: add drm_mode_cea_vic	2012-11-29 11:42:37 +01:00
drm_encoder_slave.c
drm_fb_cma_helper.c
drm_fb_helper.c	drm/fb_helper: Fix potential NULL pointer dereference	2012-11-20 15:40:56 +10:00
drm_fops.c
drm_gem_cma_helper.c
drm_gem.c
drm_global.c
drm_hashtab.c	drm: Make hashtab rcu-safe	2012-11-20 16:14:58 +10:00
drm_info.c
drm_ioc32.c
drm_ioctl.c	drm: add support for monotonic vblank timestamps	2012-11-20 16:06:16 +10:00
drm_irq.c	DRM/KMS: Add Bail-Out Conditions for Loop.	2012-11-20 16:07:49 +10:00
drm_lock.c
drm_memory.c
drm_mm.c	drm: Export routines for inserting preallocated nodes into the mm manager	2012-12-18 21:55:25 +01:00
drm_modes.c
drm_pci.c
drm_platform.c
drm_prime.c
drm_proc.c
drm_scatter.c
drm_stub.c	drm: add support for monotonic vblank timestamps	2012-11-20 16:06:16 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_usb.c
drm_vm.c
Kconfig	drm: Add NVIDIA Tegra20 support	2012-11-20 15:43:41 +10:00
Makefile	drm: Add NVIDIA Tegra20 support	2012-11-20 15:43:41 +10:00
README.drm

README.drm

************************************************************
* For the very latest on DRI development, please see:      *
*     http://dri.freedesktop.org/                          *
************************************************************

The Direct Rendering Manager (drm) is a device-independent kernel-level
device driver that provides support for the XFree86 Direct Rendering
Infrastructure (DRI).

The DRM supports the Direct Rendering Infrastructure (DRI) in four major
ways:

    1. The DRM provides synchronized access to the graphics hardware via
       the use of an optimized two-tiered lock.

    2. The DRM enforces the DRI security policy for access to the graphics
       hardware by only allowing authenticated X11 clients access to
       restricted regions of memory.

    3. The DRM provides a generic DMA engine, complete with multiple
       queues and the ability to detect the need for an OpenGL context
       switch.

    4. The DRM is extensible via the use of small device-specific modules
       that rely extensively on the API exported by the DRM module.


Documentation on the DRI is available from:
    http://dri.freedesktop.org/wiki/Documentation
    http://sourceforge.net/project/showfiles.php?group_id=387
    http://dri.sourceforge.net/doc/

For specific information about kernel-level support, see:

    The Direct Rendering Manager, Kernel Support for the Direct Rendering
    Infrastructure
    http://dri.sourceforge.net/doc/drm_low_level.html

    Hardware Locking for the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/hardware_locking_low_level.html

    A Security Analysis of the Direct Rendering Infrastructure
    http://dri.sourceforge.net/doc/security_low_level.html