mirror of https://github.com/torvalds/linux.git
6915190a50
Move the sysrq functionality from DRM fbdev helpers to the DRM device and in-kernel clients, so that it becomes available on all clients. DRM fbdev helpers support emergency restoration of the console output via a special key combination. Press SysRq+v to replace the current compositor with the kernel's output on the framebuffer console. This allows users to see the log messages during system emergencies. By moving the functionality from fbdev helpers to the DRM device, any in-kernel client can serve as emergency output. This can be used to bring up drm_log, for example. Each DRM device registers itself to the list of possible sysrq handlers. On receiving SysRq+v, the DRM core goes over all registered devices and restores an in-kernel DRM client for each of them. See Documentation/admin-guide/sysrq.rst on how to invoke SysRq. Switch VTs to bring back the user-space compositor. v2: - declare placeholders as 'static inline' (kernel test robot) - fix grammar in commit description Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Jocelyn Falempe <jfalempe@redhat.com> Link: https://patch.msgid.link/20251110154616.539328-3-tzimmermann@suse.de |
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| .. | ||
| amd | ||
| bridge | ||
| clients | ||
| display | ||
| intel | ||
| ttm | ||
| Makefile | ||
| amd_asic_type.h | ||
| drm_accel.h | ||
| drm_atomic.h | ||
| drm_atomic_helper.h | ||
| drm_atomic_state_helper.h | ||
| drm_atomic_uapi.h | ||
| drm_audio_component.h | ||
| drm_auth.h | ||
| drm_blend.h | ||
| drm_bridge.h | ||
| drm_bridge_connector.h | ||
| drm_bridge_helper.h | ||
| drm_buddy.h | ||
| drm_cache.h | ||
| drm_client.h | ||
| drm_client_event.h | ||
| drm_color_mgmt.h | ||
| drm_connector.h | ||
| drm_crtc.h | ||
| drm_crtc_helper.h | ||
| drm_damage_helper.h | ||
| drm_debugfs.h | ||
| drm_debugfs_crc.h | ||
| drm_device.h | ||
| drm_drv.h | ||
| drm_dumb_buffers.h | ||
| drm_edid.h | ||
| drm_eld.h | ||
| drm_encoder.h | ||
| drm_exec.h | ||
| drm_fb_dma_helper.h | ||
| drm_fb_helper.h | ||
| drm_fbdev_dma.h | ||
| drm_fbdev_shmem.h | ||
| drm_fbdev_ttm.h | ||
| drm_file.h | ||
| drm_fixed.h | ||
| drm_flip_work.h | ||
| drm_format_helper.h | ||
| drm_fourcc.h | ||
| drm_framebuffer.h | ||
| drm_gem.h | ||
| drm_gem_atomic_helper.h | ||
| drm_gem_dma_helper.h | ||
| drm_gem_framebuffer_helper.h | ||
| drm_gem_shmem_helper.h | ||
| drm_gem_ttm_helper.h | ||
| drm_gem_vram_helper.h | ||
| drm_gpusvm.h | ||
| drm_gpuvm.h | ||
| drm_ioctl.h | ||
| drm_kunit_helpers.h | ||
| drm_lease.h | ||
| drm_managed.h | ||
| drm_mipi_dbi.h | ||
| drm_mipi_dsi.h | ||
| drm_mm.h | ||
| drm_mode_config.h | ||
| drm_mode_object.h | ||
| drm_modes.h | ||
| drm_modeset_helper.h | ||
| drm_modeset_helper_vtables.h | ||
| drm_modeset_lock.h | ||
| drm_module.h | ||
| drm_of.h | ||
| drm_pagemap.h | ||
| drm_panel.h | ||
| drm_panic.h | ||
| drm_pciids.h | ||
| drm_plane.h | ||
| drm_plane_helper.h | ||
| drm_prime.h | ||
| drm_print.h | ||
| drm_privacy_screen_consumer.h | ||
| drm_privacy_screen_driver.h | ||
| drm_privacy_screen_machine.h | ||
| drm_probe_helper.h | ||
| drm_property.h | ||
| drm_rect.h | ||
| drm_self_refresh_helper.h | ||
| drm_simple_kms_helper.h | ||
| drm_suballoc.h | ||
| drm_syncobj.h | ||
| drm_sysfs.h | ||
| drm_util.h | ||
| drm_utils.h | ||
| drm_vblank.h | ||
| drm_vblank_helper.h | ||
| drm_vblank_work.h | ||
| drm_vma_manager.h | ||
| drm_writeback.h | ||
| gpu_scheduler.h | ||
| gud.h | ||
| spsc_queue.h | ||
| task_barrier.h | ||