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8 daysMerge tag 'mm-stable-2025-07-30-15-25' of ↵Linus Torvalds1-8/+1
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Pull MM updates from Andrew Morton: "As usual, many cleanups. The below blurbiage describes 42 patchsets. 21 of those are partially or fully cleanup work. "cleans up", "cleanup", "maintainability", "rationalizes", etc. I never knew the MM code was so dirty. "mm: ksm: prevent KSM from breaking merging of new VMAs" (Lorenzo Stoakes) addresses an issue with KSM's PR_SET_MEMORY_MERGE mode: newly mapped VMAs were not eligible for merging with existing adjacent VMAs. "mm/damon: introduce DAMON_STAT for simple and practical access monitoring" (SeongJae Park) adds a new kernel module which simplifies the setup and usage of DAMON in production environments. "stop passing a writeback_control to swap/shmem writeout" (Christoph Hellwig) is a cleanup to the writeback code which removes a couple of pointers from struct writeback_control. "drivers/base/node.c: optimization and cleanups" (Donet Tom) contains largely uncorrelated cleanups to the NUMA node setup and management code. "mm: userfaultfd: assorted fixes and cleanups" (Tal Zussman) does some maintenance work on the userfaultfd code. "Readahead tweaks for larger folios" (Ryan Roberts) implements some tuneups for pagecache readahead when it is reading into order>0 folios. "selftests/mm: Tweaks to the cow test" (Mark Brown) provides some cleanups and consistency improvements to the selftests code. "Optimize mremap() for large folios" (Dev Jain) does that. A 37% reduction in execution time was measured in a memset+mremap+munmap microbenchmark. "Remove zero_user()" (Matthew Wilcox) expunges zero_user() in favor of the more modern memzero_page(). "mm/huge_memory: vmf_insert_folio_*() and vmf_insert_pfn_pud() fixes" (David Hildenbrand) addresses some warts which David noticed in the huge page code. These were not known to be causing any issues at this time. "mm/damon: use alloc_migrate_target() for DAMOS_MIGRATE_{HOT,COLD" (SeongJae Park) provides some cleanup and consolidation work in DAMON. "use vm_flags_t consistently" (Lorenzo Stoakes) uses vm_flags_t in places where we were inappropriately using other types. "mm/memfd: Reserve hugetlb folios before allocation" (Vivek Kasireddy) increases the reliability of large page allocation in the memfd code. "mm: Remove pXX_devmap page table bit and pfn_t type" (Alistair Popple) removes several now-unneeded PFN_* flags. "mm/damon: decouple sysfs from core" (SeongJae Park) implememnts some cleanup and maintainability work in the DAMON sysfs layer. "madvise cleanup" (Lorenzo Stoakes) does quite a lot of cleanup/maintenance work in the madvise() code. "madvise anon_name cleanups" (Vlastimil Babka) provides additional cleanups on top or Lorenzo's effort. "Implement numa node notifier" (Oscar Salvador) creates a standalone notifier for NUMA node memory state changes. Previously these were lumped under the more general memory on/offline notifier. "Make MIGRATE_ISOLATE a standalone bit" (Zi Yan) cleans up the pageblock isolation code and fixes a potential issue which doesn't seem to cause any problems in practice. "selftests/damon: add python and drgn based DAMON sysfs functionality tests" (SeongJae Park) adds additional drgn- and python-based DAMON selftests which are more comprehensive than the existing selftest suite. "Misc rework on hugetlb faulting path" (Oscar Salvador) fixes a rather obscure deadlock in the hugetlb fault code and follows that fix with a series of cleanups. "cma: factor out allocation logic from __cma_declare_contiguous_nid" (Mike Rapoport) rationalizes and cleans up the highmem-specific code in the CMA allocator. "mm/migration: rework movable_ops page migration (part 1)" (David Hildenbrand) provides cleanups and future-preparedness to the migration code. "mm/damon: add trace events for auto-tuned monitoring intervals and DAMOS quota" (SeongJae Park) adds some tracepoints to some DAMON auto-tuning code. "mm/damon: fix misc bugs in DAMON modules" (SeongJae Park) does that. "mm/damon: misc cleanups" (SeongJae Park) also does what it claims. "mm: folio_pte_batch() improvements" (David Hildenbrand) cleans up the large folio PTE batching code. "mm/damon/vaddr: Allow interleaving in migrate_{hot,cold} actions" (SeongJae Park) facilitates dynamic alteration of DAMON's inter-node allocation policy. "Remove unmap_and_put_page()" (Vishal Moola) provides a couple of page->folio conversions. "mm: per-node proactive reclaim" (Davidlohr Bueso) implements a per-node control of proactive reclaim - beyond the current memcg-based implementation. "mm/damon: remove damon_callback" (SeongJae Park) replaces the damon_callback interface with a more general and powerful damon_call()+damos_walk() interface. "mm/mremap: permit mremap() move of multiple VMAs" (Lorenzo Stoakes) implements a number of mremap cleanups (of course) in preparation for adding new mremap() functionality: newly permit the remapping of multiple VMAs when the user is specifying MREMAP_FIXED. It still excludes some specialized situations where this cannot be performed reliably. "drop hugetlb_free_pgd_range()" (Anthony Yznaga) switches some sparc hugetlb code over to the generic version and removes the thus-unneeded hugetlb_free_pgd_range(). "mm/damon/sysfs: support periodic and automated stats update" (SeongJae Park) augments the present userspace-requested update of DAMON sysfs monitoring files. Automatic update is now provided, along with a tunable to control the update interval. "Some randome fixes and cleanups to swapfile" (Kemeng Shi) does what is claims. "mm: introduce snapshot_page" (Luiz Capitulino and David Hildenbrand) provides (and uses) a means by which debug-style functions can grab a copy of a pageframe and inspect it locklessly without tripping over the races inherent in operating on the live pageframe directly. "use per-vma locks for /proc/pid/maps reads" (Suren Baghdasaryan) addresses the large contention issues which can be triggered by reads from that procfs file. Latencies are reduced by more than half in some situations. The series also introduces several new selftests for the /proc/pid/maps interface. "__folio_split() clean up" (Zi Yan) cleans up __folio_split()! "Optimize mprotect() for large folios" (Dev Jain) provides some quite large (>3x) speedups to mprotect() when dealing with large folios. "selftests/mm: reuse FORCE_READ to replace "asm volatile("" : "+r" (XXX));" and some cleanup" (wang lian) does some cleanup work in the selftests code. "tools/testing: expand mremap testing" (Lorenzo Stoakes) extends the mremap() selftest in several ways, including adding more checking of Lorenzo's recently added "permit mremap() move of multiple VMAs" feature. "selftests/damon/sysfs.py: test all parameters" (SeongJae Park) extends the DAMON sysfs interface selftest so that it tests all possible user-requested parameters. Rather than the present minimal subset" * tag 'mm-stable-2025-07-30-15-25' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (370 commits) MAINTAINERS: add missing headers to mempory policy & migration section MAINTAINERS: add missing file to cgroup section MAINTAINERS: add MM MISC section, add missing files to MISC and CORE MAINTAINERS: add missing zsmalloc file MAINTAINERS: add missing files to page alloc section MAINTAINERS: add missing shrinker files MAINTAINERS: move memremap.[ch] to hotplug section MAINTAINERS: add missing mm_slot.h file THP section MAINTAINERS: add missing interval_tree.c to memory mapping section MAINTAINERS: add missing percpu-internal.h file to per-cpu section mm/page_alloc: remove trace_mm_alloc_contig_migrate_range_info() selftests/damon: introduce _common.sh to host shared function selftests/damon/sysfs.py: test runtime reduction of DAMON parameters selftests/damon/sysfs.py: test non-default parameters runtime commit selftests/damon/sysfs.py: generalize DAMON context commit assertion selftests/damon/sysfs.py: generalize monitoring attributes commit assertion selftests/damon/sysfs.py: generalize DAMOS schemes commit assertion selftests/damon/sysfs.py: test DAMOS filters commitment selftests/damon/sysfs.py: generalize DAMOS scheme commit assertion selftests/damon/sysfs.py: test DAMOS destinations commitment ...
8 daysMerge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds15-191/+260
Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ...
2025-07-16drm/ttm: remove ttm_bo_validate_swapout testChristian König1-51/+0
The test is quite fragile since it tries to allocate halve available system memory + 1 page. If the system has either not enough memory to make the allocation work with other things running in parallel or to much memory so the allocation fails as to large/invalid the test will fail. Completely remove the test. We already validate swapout on the device level and that test seems to be stable. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://lore.kernel.org/r/20250710144129.1803-2-christian.koenig@amd.com
2025-07-16drm/ttm: fix locking in test ttm_bo_validate_no_placement_signaledChristian König1-4/+5
The test works even without it, but lockdep starts screaming when it is activated. Trivially fix it by acquiring the lock before we try to allocate something. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://lore.kernel.org/r/20250710144129.1803-1-christian.koenig@amd.com
2025-07-10drm/ttm: add new api ttm_device_prepare_hibernation()Samuel Zhang1-0/+22
This new api is used for hibernation to move GTT BOs to shmem after VRAM eviction. shmem will be flushed to swap disk later to reduce the system memory usage for hibernation. Signed-off-by: Samuel Zhang <guoqing.zhang@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250710062313.3226149-2-guoqing.zhang@amd.com Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
2025-07-10mm: stop passing a writeback_control structure to shmem_writeoutChristoph Hellwig1-8/+1
shmem_writeout only needs the swap_iocb cookie and the split folio list. Pass those explicitly and remove the now unused list member from struct writeback_control. Link: https://lkml.kernel.org/r/20250610054959.2057526-3-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Baolin Wang <baolin.wang@linux.alibaba.com> Cc: Chengming Zhou <chengming.zhou@linux.dev> Cc: Hugh Dickins <hughd@google.com> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Nhat Pham <nphamcs@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2025-07-08Merge tag 'drm-intel-next-2025-07-04' of ↵Simona Vetter1-0/+26
https://gitlab.freedesktop.org/drm/i915/kernel into drm-next drm/i915 feature pull #2 for v6.17: Features and functionality: - Add drm_panic support for both i915 and xe drivers (Jocelyn Falempe) - Add initial flip queue implementation, disabled by default, for LNL and PTL (Ville) - Add support for Wildcat Lake (WCL) display, version 30.02 (Matt Roper, Matt Atwood, Dnyaneshwar) - Extend drm_panel and follower support to DDI eDP (Arun) Refactoring and cleanups: - Make all global state objects opaque (Jani) - Move display works to display specific unordered workqueue (Luca) - Add and use struct drm_device based pcode interface (Jani, Lucas) - Use clamp() instead of max()+min() combo (Ankit) - Simplify wait for power well disable (Jani) - Various stylistics cleanups and renames (Jani) Fixes: - Deal with loss of pipe DMC state (Ville) - Fix PTL HDCP2 stream status check (Suraj) - Add workaround for ADL-P DKL PHY DP and HDMI (Nemesa) - Fix skl_print_wm_changes() stack usage with KMSAN (Arnd Bergmann) - Fix PCON capability reads on non-branch devices (Chaitanya) - Fix which platforms have ultra joiner (Ankit) DRM core changes: - Add ttm_bo_kmap_try_from_panic() for xe drm_panic support (Jocelyn Falempe) - Add private pointer to struct drm_scanout buffer for xe/i915 drm_panic support (Jocelyn Falempe) Merges: - Backmerge drm-next for drm_panel and xe changes (Jani) Signed-off-by: Simona Vetter <simona.vetter@ffwll.ch> From: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/6d728bf6ef23681b00dfbc7da9aeae41042dee02@intel.com
2025-07-02drm/ttm: Remove unneeded blank line in commentJocelyn Falempe1-1/+0
There is an unneeded blank line in the documentation of the function ttm_bo_kmap_try_from_panic(). Reported-by: kernel test robot <lkp@intel.com> Closes: https://lore.kernel.org/oe-kbuild-all/202506290453.NeTXAb7S-lkp@intel.com/ Fixes: 718370ff28328 ("drm/ttm: Add ttm_bo_kmap_try_from_panic()") Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com> Reviewed-by: Christian König <christian.koenig@amd.com> Acked-by: Thomas Zimmermann <tzimmermann@suse.de> Link: https://lore.kernel.org/r/20250630144154.44661-1-jfalempe@redhat.com Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
2025-06-30drm/ttm: fix error handling in ttm_buffer_object_transferChristian König1-6/+7
Unlocking the resv object was missing in the error path, additionally to that we should move over the resource only after the fence slot was reserved. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Fixes: c8d4c18bfbc4a ("dma-buf/drivers: make reserving a shared slot mandatory v4") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20250616130726.22863-3-christian.koenig@amd.com
2025-06-27drm/ttm: Add ttm_bo_kmap_try_from_panic()Jocelyn Falempe1-0/+27
If the ttm bo is backed by pages, then it's possible to safely kmap one page at a time, using kmap_try_from_panic(). Unfortunately there is no way to do the same with ioremap, so it only supports the kmap case. This is needed for proper drm_panic support with xe driver. Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250624091501.257661-6-jfalempe@redhat.com Signed-off-by: Maarten Lankhorst <dev@lankhorst.se>
2025-06-26drm/ttm, drm_xe, Implement ttm_lru_walk_for_evict() using the guarded LRU ↵Thomas Hellström1-113/+75
iteration To avoid duplicating the tricky bo locking implementation, Implement ttm_lru_walk_for_evict() using the guarded bo LRU iteration. To facilitate this, support ticketlocking from the guarded bo LRU iteration. v2: - Clean up some static function interfaces (Christian König) - Fix Handling -EALREADY from ticketlocking in the loop by skipping to the next item. (Intel CI) Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250623155313.4901-4-thomas.hellstrom@linux.intel.com
2025-06-26drm/ttm, drm/xe: Modify the struct ttm_bo_lru_walk_cursor initializationThomas Hellström1-5/+5
Instead of the struct ttm_operation_ctx, Pass a struct ttm_lru_walk_arg to enable us to easily extend the walk functionality, and to implement ttm_lru_walk_for_evict() using the guarded LRU iteration. Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250623155313.4901-3-thomas.hellstrom@linux.intel.com
2025-06-26drm/ttm: Use a struct for the common part of struct ttm_lru_walk and struct ↵Thomas Hellström2-22/+28
ttm_bo_lru_cursor Let the locking functions take the new struct ttm_lru_walk_arg as argument in order for them to be easily used from both types of walk. v2: - Whitespace fix Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250623155313.4901-2-thomas.hellstrom@linux.intel.com
2025-06-16drm/ttm: Include <linux/export.h>Thomas Zimmermann13-0/+22
Fix the compile-time warnings drivers/gpu/drm/ttm/tests/ttm_kunit_helpers.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/tests/ttm_mock_manager.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_agp_backend.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_backup.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_bo.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_bo_util.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_bo_vm.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_device.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_execbuf_util.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_pool.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_range_manager.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_resource.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing drivers/gpu/drm/ttm/ttm_tt.c: warning: EXPORT_SYMBOL() is used, but #include <linux/export.h> is missing Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Fixes: a934a57a42f6 ("scripts/misc-check: check missing #include <linux/export.h> when W=1") Reviewed-by: André Almeida <andrealmeid@igalia.com> Cc: Masahiro Yamada <masahiroy@kernel.org> Cc: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20250612121633.229222-10-tzimmermann@suse.de
2025-06-11drm/ttm: Should to return the evict errorEmily Deng1-0/+3
For the evict fail case, the evict error should be returned. v2: Consider ENOENT case. v3: Abort directly when the eviction failed for some reason (except for -ENOENT) and not wait for the move to finish Signed-off-by: Emily Deng <Emily.Deng@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250603091154.3472646-1-Emily.Deng@amd.com
2025-06-11Merge drm/drm-next into drm-misc-nextThomas Zimmermann4-42/+22
Backmerging to forward to v6.16-rc1 Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
2025-06-08treewide, timers: Rename from_timer() to timer_container_of()Ingo Molnar1-1/+1
Move this API to the canonical timer_*() namespace. [ tglx: Redone against pre rc1 ] Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/aB2X0jCKQO56WdMt@gmail.com
2025-06-05drm/ttm: handle undefined printf arg evaluation order in debugfsDave Airlie1-1/+3
When you read this debugfs file it's isn't guaranteed the count will happen before the scan, but I think the intent is that it does. printf argument evaluation order is undefined. Cc: Christian Koenig <christian.koenig@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://lore.kernel.org/r/20250603220901.1217161-1-airlied@gmail.com
2025-06-04drm/ttm: Fix build with CONFIG_DEBUG_FS=nLucas De Marchi1-3/+3
Move the define outside the ifdef for CONFIG_DEBUG_FS to fix the build. This currently breaks drm kunit tests: $ ./tools/testing/kunit/kunit.py run --kunitconfig drivers/gpu/drm/ttm/tests/.kunitconfig ERROR:root:../drivers/gpu/drm/ttm/ttm_pool.c: In function ‘ttm_pool_mgr_init’: ../drivers/gpu/drm/ttm/ttm_pool.c:1335:30: error: ‘TTM_SHRINKER_BATCH’ undeclared (first use in this function) 1335 | mm_shrinker->batch = TTM_SHRINKER_BATCH; Fixes: 22b929b25293 ("drm/ttm: Increase pool shrinker batch target") Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Christian König <christian.koenig@amd.com> Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20250603184750.3304647-2-lucas.demarchi@intel.com
2025-06-04ttm/pool: allow debugfs dumps for numa pools.Dave Airlie1-2/+7
Currently you can't see per-device numa aware pools properly. Cc: Christian König <christian.koenig@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Dave Airlie <airlied@redhat.com> Link: https://lore.kernel.org/r/20250602204013.1104258-1-airlied@gmail.com
2025-06-03drm/ttm: Increase pool shrinker batch targetTvrtko Ursulin1-1/+8
The default core shrink target of 128 pages (SHRINK_BATCH) is quite low relative to how cheap TTM pool shrinking is, and how the free pages are distributed in page order pools. We can make the target a bit more aggressive by making it roughly the average number of pages across all pools, freeing more of the cached pages every time shrinker core invokes our callback. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20250603112750.34997-3-tvrtko.ursulin@igalia.com
2025-06-03drm/ttm: Respect the shrinker core free targetTvrtko Ursulin1-3/+5
Currently the TTM shrinker aborts shrinking as soon as it frees pages from any of the page order pools and by doing so it can fail to respect the freeing target which was configured by the shrinker core. We use the wording "can fail" because the number of freed pages will depend on the presence of pages in the pools and the order of the pools on the LRU list. For example if there are no free pages in the high order pools the shrinker core may require multiple passes over the TTM shrinker before it will free the default target of 128 pages (assuming there are free pages in the low order pools). This inefficiency can be compounded by the pool LRU where multiple further calls into the TTM shrinker are required to end up looking at the pool with pages. Improve this by never freeing less than the shrinker core has requested. At the same time we start reporting the number of scanned pages (freed in this case), which prevents the core shrinker from giving up on the TTM shrinker too soon and moving on. v2: * Simplify loop logic. (Christian) * Improve commit message. Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Cc: Christian König <christian.koenig@amd.com> Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net> Link: https://lore.kernel.org/r/20250603112750.34997-2-tvrtko.ursulin@igalia.com
2025-05-28Merge tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernelLinus Torvalds4-5/+3
Pull drm updates from Dave Airlie: "As part of building up nova-core/nova-drm pieces we've brought in some rust abstractions through this tree, aux bus being the main one, with devres changes also in the driver-core tree. Along with the drm core abstractions and enough nova-core/nova-drm to use them. This is still all stub work under construction, to build the nova driver upstream. The other big NVIDIA related one is nouveau adds support for Hopper/Blackwell GPUs, this required a new GSP firmware update to 570.144, and a bunch of rework in order to support multiple fw interfaces. There is also the introduction of an asahi uapi header file as a precursor to getting the real driver in later, but to unblock userspace mesa packages while the driver is trapped behind rust enablement. Otherwise it's the usual mixture of stuff all over, amdgpu, i915/xe, and msm being the main ones, and some changes to vsprintf. new drivers: - bring in the asahi uapi header standalone - nova-drm: stub driver rust dependencies (for nova-core): - auxiliary - bus abstractions - driver registration - sample driver - devres changes from driver-core - revocable changes core: - add Apple fourcc modifiers - add virtio capset definitions - extend EXPORT_SYNC_FILE for timeline syncobjs - convert to devm_platform_ioremap_resource - refactor shmem helper page pinning - DP powerup/down link helpers - extended %p4cc in vsprintf.c to support fourcc prints - change vsprintf %p4cn to %p4chR, remove %p4cn - Add drm_file_err function - IN_FORMATS_ASYNC property - move sitronix from tiny to their own subdir rust: - add drm core infrastructure rust abstractions (device/driver, ioctl, file, gem) dma-buf: - adjust sg handling to not cache map on attach - allow setting dma-device for import - Add a helper to sort and deduplicate dma_fence arrays docs: - updated drm scheduler docs - fbdev todo update - fb rendering - actual brightness ttm: - fix delayed destroy resv object bridge: - add kunit tests - convert tc358775 to atomic - convert drivers to devm_drm_bridge_alloc - convert rk3066_hdmi to bridge driver scheduler: - add kunit tests panel: - refcount panels to improve lifetime handling - Powertip PH128800T004-ZZA01 - NLT NL13676BC25-03F, Tianma TM070JDHG34-00 - Himax HX8279/HX8279-D DDIC - Visionox G2647FB105 - Sitronix ST7571 - ZOTAC rotation quirk vkms: - allow attaching more displays i915: - xe3lpd display updates - vrr refactor - intel_display struct conversions - xe2hpd memory type identification - add link rate/count to i915_display_info - cleanup VGA plane handling - refactor HDCP GSC - fix SLPC wait boosting reference counting - add 20ms delay to engine reset - fix fence release on early probe errors xe: - SRIOV updates - BMG PCI ID update - support separate firmware for each GT - SVM fix, prelim SVM multi-device work - export fan speed - temp disable d3cold on BMG - backup VRAM in PM notifier instead of suspend/freeze - update xe_ttm_access_memory to use GPU for non-visible access - fix guc_info debugfs for VFs - use copy_from_user instead of __copy_from_user - append PCIe gen5 limitations to xe_firmware document amdgpu: - DSC cleanup - DC Scaling updates - Fused I2C-over-AUX updates - DMUB updates - Use drm_file_err in amdgpu - Enforce isolation updates - Use new dma_fence helpers - USERQ fixes - Documentation updates - SR-IOV updates - RAS updates - PSP 12 cleanups - GC 9.5 updates - SMU 13.x updates - VCN / JPEG SR-IOV updates amdkfd: - Update error messages for SDMA - Userptr updates - XNACK fixes radeon: - CIK doorbell cleanup nouveau: - add support for NVIDIA r570 GSP firmware - enable Hopper/Blackwell support nova-core: - fix task list - register definition infrastructure - move firmware into own rust module - register auxiliary device for nova-drm nova-drm: - initial driver skeleton msm: - GPU: - ACD (adaptive clock distribution) for X1-85 - drop fictional address_space_size - improve GMU HFI response time out robustness - fix crash when throttling during boot - DPU: - use single CTL path for flushing on DPU 5.x+ - improve SSPP allocation code for better sharing - Enabled SmartDMA on SM8150, SC8180X, SC8280XP, SM8550 - Added SAR2130P support - Disabled DSC support on MSM8937, MSM8917, MSM8953, SDM660 - DP: - switch to new audio helpers - better LTTPR handling - DSI: - Added support for SA8775P - Added SAR2130P support - HDMI: - Switched to use new helpers for ACR data - Fixed old standing issue of HPD not working in some cases amdxdna: - add dma-buf support - allow empty command submits renesas: - add dma-buf support - add zpos, alpha, blend support panthor: - fail properly for NO_MMAP bos - add SET_LABEL ioctl - debugfs BO dumping support imagination: - update DT bindings - support TI AM68 GPU hibmc: - improve interrupt handling and HPD support virtio: - add panic handler support rockchip: - add RK3588 support - add DP AUX bus panel support ivpu: - add heartbeat based hangcheck mediatek: - prepares support for MT8195/99 HDMIv2/DDCv2 anx7625: - improve HPD tegra: - speed up firmware loading * tag 'drm-next-2025-05-28' of https://gitlab.freedesktop.org/drm/kernel: (1627 commits) drm/nouveau/tegra: Fix error pointer vs NULL return in nvkm_device_tegra_resource_addr() drm/xe: Default auto_link_downgrade status to false drm/xe/guc: Make creation of SLPC debugfs files conditional drm/i915/display: Add check for alloc_ordered_workqueue() and alloc_workqueue() drm/i915/dp_mst: Work around Thunderbolt sink disconnect after SINK_COUNT_ESI read drm/i915/ptl: Use everywhere the correct DDI port clock select mask drm/nouveau/kms: add support for GB20x drm/dp: add option to disable zero sized address only transactions. drm/nouveau: add support for GB20x drm/nouveau/gsp: add hal for fifo.chan.doorbell_handle drm/nouveau: add support for GB10x drm/nouveau/gf100-: track chan progress with non-WFI semaphore release drm/nouveau/nv50-: separate CHANNEL_GPFIFO handling out from CHANNEL_DMA drm/nouveau: add helper functions for allocating pinned/cpu-mapped bos drm/nouveau: add support for GH100 drm/nouveau: improve handling of 64-bit BARs drm/nouveau/gv100-: switch to volta semaphore methods drm/nouveau/gsp: support deeper page tables in COPY_SERVER_RESERVED_PDES drm/nouveau/gsp: init client VMMs with NV0080_CTRL_DMA_SET_PAGE_DIRECTORY drm/nouveau/gsp: fetch level shift and PDE from BAR2 VMM ...
2025-05-27Merge tag 'timers-cleanups-2025-05-25' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull timer cleanups from Thomas Gleixner: "Another set of timer API cleanups: - Convert init_timer*(), try_to_del_timer_sync() and destroy_timer_on_stack() over to the canonical timer_*() namespace convention. There is another large conversion pending, which has not been included because it would have caused a gazillion of merge conflicts in next. The conversion scripts will be run towards the end of the merge window and a pull request sent once all conflict dependencies have been merged" * tag 'timers-cleanups-2025-05-25' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: treewide, timers: Rename destroy_timer_on_stack() as timer_destroy_on_stack() treewide, timers: Rename try_to_del_timer_sync() as timer_delete_sync_try() timers: Rename init_timers() as timers_init() timers: Rename NEXT_TIMER_MAX_DELTA as TIMER_NEXT_MAX_DELTA timers: Rename __init_timer_on_stack() as __timer_init_on_stack() timers: Rename __init_timer() as __timer_init() timers: Rename init_timer_on_stack_key() as timer_init_key_on_stack() timers: Rename init_timer_key() as timer_init_key()
2025-05-26Merge tag 'vfs-6.16-rc1.writepage' of ↵Linus Torvalds1-4/+4
git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs Pull final writepage conversion from Christian Brauner: "This converts vboxfs from ->writepage() to ->writepages(). This was the last user of the ->writepage() method. So remove ->writepage() completely and all references to it" * tag 'vfs-6.16-rc1.writepage' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: fs: Remove aops->writepage mm: Remove swap_writepage() and shmem_writepage() ttm: Call shmem_writeout() from ttm_backup_backup_page() i915: Use writeback_iter() shmem: Add shmem_writeout() writeback: Remove writeback_use_writepage() migrate: Remove call to ->writepage vboxsf: Convert to writepages 9p: Add a migrate_folio method
2025-05-26drm/ttm: make ttm_bo_get internalChristian König1-0/+10
Prevent drivers from using this directly. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch> Link: https://lore.kernel.org/r/20240723121750.2086-8-christian.koenig@amd.com
2025-05-26drm/ttm: revert "Export ttm_bo_get_unless_zero()"Christian König4-0/+52
This reverts commit 24dc64c1ba5c3ef0463d59fef6df09336754188d. Shouldn't be needed by drivers any more. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Danilo Krummrich <dakr@kernel.org> Reviewed-by: Simona Vetter <simona.vetter@ffwll.ch> Link: https://lore.kernel.org/r/20240723121750.2086-6-christian.koenig@amd.com
2025-05-08treewide, timers: Rename destroy_timer_on_stack() as timer_destroy_on_stack()Ingo Molnar1-1/+1
Move this API to the canonical timer_*() namespace. Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/all/20250507175338.672442-10-mingo@kernel.org
2025-05-06drm/ttm: Remove the struct ttm_backup abstractionThomas Hellström3-35/+15
The abstraction was previously added to support separate ttm_backup implementations. However with the current implementation casting from a struct file to a struct ttm_backup, we run into trouble since struct file may have randomized the layout and gcc complains. Remove the struct ttm_backup abstraction Cc: dri-devel@lists.freedesktop.org Cc: Matthew Brost <matthew.brost@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: Christian König <christian.koenig@amd.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Reported-by: Kees Cook <kees@kernel.org> Closes: https://lore.kernel.org/dri-devel/9c8dbbafdaf9f3f089da2cde5a772d69579b3795.camel@linux.intel.com/T/#mb153ab9216cb813b92bdeb36f391ad4808c2ba29 Suggested-by: Christian König <christian.koenig@amd.com> Fixes: 70d645deac98 ("drm/ttm: Add helpers for shrinking") Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250502130014.3156-1-thomas.hellstrom@linux.intel.com
2025-05-06drm/ttm: Fix ttm_backup kerneldocThomas Hellström1-1/+1
The docs were not properly updated from an earlier version of the code. Fixes: e7b5d23e5d47 ("drm/ttm: Provide a shmem backup implementation") Cc: Christian König <christian.koenig@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: dri-devel@lists.freedesktop.org Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://lore.kernel.org/r/20250502130101.3185-1-thomas.hellstrom@linux.intel.com
2025-05-06BackMerge tag 'v6.15-rc5' into drm-nextDave Airlie1-1/+2
Linux 6.15-rc5, requested by tzimmerman for fixes required in drm-next. Signed-off-by: Dave Airlie <airlied@redhat.com>
2025-04-28drm/ttm: fix the warning for hit_low and evict_lowSunil Khatri1-1/+2
fix the below warning messages: ttm/ttm_bo.c:1098: warning: Function parameter or struct member 'hit_low' not described in 'ttm_bo_swapout_walk' ttm/ttm_bo.c:1098: warning: Function parameter or struct member 'evict_low' not described in 'ttm_bo_swapout_walk' Cc: Maarten Lankhorst <dev@lankhorst.se> Cc: Tvrtko Ursulin <tvrtko.ursulin@igalia.com> Signed-off-by: Sunil Khatri <sunil.khatri@amd.com> Reviewed-by: Maarten Lankhorst <dev@lankhorst.se> Signed-off-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/r/20250423042442.762108-1-sunil.khatri@amd.com
2025-04-23drm/ttm/xe: drop unused force_alloc flagDave Airlie2-2/+0
This flag used to be used in the old memory tracking code, that code got migrated into the vmwgfx driver[1], and then got removed from the tree[2], but this piece got left behind. [1] f07069da6b4c ("drm/ttm: move memory accounting into vmwgfx v4") [2] 8aadeb8ad874 ("drm/vmwgfx: Remove the dedicated memory accounting") Cleanup the dead code. Reviewed-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2025-04-07ttm: Call shmem_writeout() from ttm_backup_backup_page()Matthew Wilcox (Oracle)1-4/+4
The ->writepage operation is being removed. Since this function exclusively deals with shmem folios, we can call shmem_writeout() to write it. Signed-off-by: "Matthew Wilcox (Oracle)" <willy@infradead.org> Link: https://lore.kernel.org/r/20250402150005.2309458-8-willy@infradead.org Signed-off-by: Christian Brauner <brauner@kernel.org>
2025-03-14drm/ttm/tests: fix incorrect assert in ttm_bo_unreserve_bulk()Qasim Ijaz1-1/+1
In the ttm_bo_unreserve_bulk() test function, resv is allocated using kunit_kzalloc(), but the subsequent assertion mistakenly verifies the ttm_dev pointer instead of the resv pointer. Fix the assertion to properly verify the resv pointer. Signed-off-by: Qasim Ijaz <qasdev00@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250313161424.10688-1-qasdev00@gmail.com Reviewed-by: Christian König <christian.koenig@amd.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2025-03-06drm/ttm: test private resv obj on release/destroyChristian König1-2/+2
Test the fences in the private dma_resv object instead of the pointer to a potentially shared dma_resv object. This only matters for imported BOs with an SG table since those don't get their dma_resv pointer replaced on release. Signed-off-by: Christian König <christian.koenig@amd.com> Signed-off-by: James Zhu <James.Zhu@amd.com> Reviewed-by: James Zhu <James.Zhu@amd.com> Tested-by: James Zhu <James.Zhu@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250129152849.15777-1-christian.koenig@amd.com
2025-03-05drm/ttm: Add helpers for shrinkingThomas Hellström2-1/+135
Add a number of helpers for shrinking that access core TTM and core MM functionality in a way that make them unsuitable for driver open-coding. v11: - New patch (split off from previous) and additional helpers. v13: - Adapt to ttm_backup interface change. - Take resource off LRU when backed up. Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/intel-xe/20250305092220.123405-6-thomas.hellstrom@linux.intel.com
2025-03-05drm/ttm: Add a macro to perform LRU iterationThomas Hellström1-4/+136
Following the design direction communicated here: https://lore.kernel.org/linux-mm/b7491378-defd-4f1c-31e2-29e4c77e2d67@amd.com/T/#ma918844aa8a6efe8768fdcda0c6590d5c93850c9 Export a LRU walker for driver shrinker use. The walker initially supports only trylocking, since that's the method used by shrinkes. The walker makes use of scoped_guard() to allow exiting from the LRU walk loop without performing any explicit unlocking or cleanup. v8: - Split out from another patch. - Use a struct for bool arguments to increase readability (Matt Brost). - Unmap user-space cpu-mappings before shrinking pages. - Explain non-fatal error codes (Matt Brost) v10: - Instead of using the existing helper, Wrap the interface inside out and provide a loop to de-midlayer things the LRU iteration (Christian König). - Removing the R-B by Matt Brost since the patch was significantly changed. v11: - Split the patch up to include just the LRU walk helper. v12: - Indent after scoped_guard() (Matt Brost) v15: - Adapt to new definition of scoped_guard() Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Acked-by: Dave Airlie <airlied@redhat.com> Acked-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/intel-xe/20250305092220.123405-5-thomas.hellstrom@linux.intel.com
2025-03-05drm/ttm: Use fault-injection to test error pathsThomas Hellström1-1/+24
Use fault-injection to test partial TTM swapout and interrupted swapin. Return -EINTR for swapin to test the callers ability to handle and restart the swapin, and on swapout perform a partial swapout to test that the swapin and release_shrunken functionality. v8: - Use the core fault-injection system. v9: - Fix compliation failure for !CONFIG_FAULT_INJECTION Cc: Christian König <christian.koenig@amd.com> Cc: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: <dri-devel@lists.freedesktop.org> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/intel-xe/20250305092220.123405-4-thomas.hellstrom@linux.intel.com
2025-03-05drm/ttm/pool, drm/ttm/tt: Provide a helper to shrink pagesThomas Hellström2-52/+556
Provide a helper to shrink ttm_tt page-vectors on a per-page basis. A ttm_backup backend could then in theory get away with allocating a single temporary page for each struct ttm_tt. This is accomplished by splitting larger pages before trying to back them up. In the future we could allow ttm_backup to handle backing up large pages as well, but currently there's no benefit in doing that, since the shmem backup backend would have to split those anyway to avoid allocating too much temporary memory, and if the backend instead inserts pages into the swap-cache, those are split on reclaim by the core. Due to potential backup- and recover errors, allow partially swapped out struct ttm_tt's, although mark them as swapped out stopping them from being swapped out a second time. More details in the ttm_pool.c DOC section. v2: - A couple of cleanups and error fixes in ttm_pool_back_up_tt. - s/back_up/backup/ - Add a writeback parameter to the exported interface. v8: - Use a struct for flags for readability (Matt Brost) - Address misc other review comments (Matt Brost) v9: - Update the kerneldoc for the ttm_tt::backup field. v10: - Rebase. v13: - Rebase on ttm_backup interface change. Update kerneldoc. - Rebase and adjust ttm_tt_is_swapped(). v15: - Rebase on ttm_backup return value change. - Rebase on previous restructuring of ttm_pool_alloc() - Rework the ttm_pool backup interface (Christian König) - Remove cond_resched() (Christian König) - Get rid of the need to allocate an intermediate page array when restoring a multi-order page (Christian König) - Update documentation. Cc: Christian König <christian.koenig@amd.com> Cc: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: <dri-devel@lists.freedesktop.org> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Acked-by: Christian Koenig <christian.koenig@amd.com> Link: https://lore.kernel.org/intel-xe/20250305092220.123405-3-thomas.hellstrom@linux.intel.com
2025-03-05drm/ttm: Provide a shmem backup implementationThomas Hellström2-1/+208
Provide a standalone shmem backup implementation. Given the ttm_backup interface, this could later on be extended to providing other backup implementation than shmem, with one use-case being GPU swapout to a user-provided fd. v5: - Fix a UAF. (kernel test robot, Dan Carptenter) v6: - Rename ttm_backup_shmem_copy_page() function argument (Matthew Brost) - Add some missing documentation v8: - Use folio_file_page to get to the page we want to writeback instead of using the first page of the folio. v13: - Remove the base class abstraction (Christian König) - Include ttm_backup_bytes_avail(). v14: - Fix kerneldoc for ttm_backup_bytes_avail() (0-day) - Work around casting of __randomize_layout struct pointer (0-day) v15: - Return negative error code from ttm_backup_backup_page() (Christian König) - Doc fixes. (Christian König). Cc: Christian König <christian.koenig@amd.com> Cc: Somalapuram Amaranath <Amaranath.Somalapuram@amd.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: <dri-devel@lists.freedesktop.org> Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://lore.kernel.org/intel-xe/20250305092220.123405-2-thomas.hellstrom@linux.intel.com
2025-02-10drm/ttm: use ttm_resource_unevictable() to replace pin_count and swappedZhaoyu Liu1-5/+10
TTM always uses pin_count and ttm_resource_is_swapped() together to determine whether a BO is unevictable. Now use ttm_resource_unevictable() to replace them. Signed-off-by: Zhaoyu Liu <liuzhaoyu.zackary@bytedance.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250126093256.GA688734@bytedance Signed-off-by: Christian König <christian.koenig@amd.com>
2025-02-06Merge drm/drm-next into drm-misc-nextMaxime Ripard6-29/+110
Bring rc1 to start the new release dev. Signed-off-by: Maxime Ripard <mripard@kernel.org>
2025-01-13drm/ttm/pool: Restructure the pool allocation codeThomas Hellström1-75/+108
Simplify the pool allocation code somewhat by merging loop arguments used by multiple functions together in a struct and simplifying the loop. Also add documentation. This hopefully makes the behaviour of the allocation loop simplier to understand, but above all paves the way for upcoming restore-while-allocating functionality. There are no functional changes, but the "allow_pools" bool introduced to keep current functionality could be removed as a follow up, which would enable using write-back cached pools when allocating memory for other caching modes, rather than to resort to allocating from the system directly. v15: - Introduce this patch to simplify the upcoming patch that introduces restore while allocating. Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241217145852.37342-4-thomas.hellstrom@linux.intel.com Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Signed-off-by: Christian König <christian.koenig@amd.com>
2025-01-13drm/ttm: Balance ttm_resource_cursor_init() and ttm_resource_cursor_fini()Thomas Hellström3-13/+28
Make the interface more symmetric by providing and using a ttm_resource_cursor_init(). v10: - Fix a stray newline (Matthew Brost) - Update kerneldoc (Matthew Brost) Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241217145852.37342-2-thomas.hellstrom@linux.intel.com Signed-off-by: Christian König <christian.koenig@amd.com>
2025-01-11Merge tag 'cgroup-dmem-drm-v2' of ↵Dave Airlie5-21/+78
git://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into drm-next DMEM cgroup pull request This introduces a new cgroup controller to limit the device memory. Notable users would be DRM, dma-buf heaps, or v4l2. This pull request is based on the series developped by Maarten Lankhorst, Friedrich Vock, and I: https://lore.kernel.org/all/20241204134410.1161769-1-dev@lankhorst.se/ Signed-off-by: Dave Airlie <airlied@redhat.com> From: Maxime Ripard <mripard@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250110-cryptic-warm-mandrill-b71f5d@houat
2025-01-10drm/ttm: Handle cgroup based eviction in TTMMaarten Lankhorst5-21/+78
cgroup resource allocation has to be handled in TTM, so -EAGAIN from cgroups can be converted into -ENOSPC, and the limitcg can be properly evicted in ttm code. When hitting a resource limit through -EAGAIN, the cgroup for which the limit is hit is also returned. This allows eviction to delete only from cgroups which are a subgroup of the current cgroup. The returned CSS is used to determine if eviction is valuable for a given resource, and allows TTM to only target specific resources to lower memory usage. Co-developed-by: Friedrich Vock <friedrich.vock@gmx.de> Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de> Co-developed-by: Maxime Ripard <mripard@kernel.org> Signed-off-by: Maarten Lankhorst <dev@lankhorst.se> Acked-by: Tejun Heo <tj@kernel.org> Link: https://lore.kernel.org/r/20241204134410.1161769-4-dev@lankhorst.se Signed-off-by: Maxime Ripard <mripard@kernel.org>
2024-12-13Merge tag 'drm-xe-next-2024-12-11' of ↵Dave Airlie1-8/+32
https://gitlab.freedesktop.org/drm/xe/kernel into drm-next UAPI Changes: - Make OA buffer size configurable (Sai) Display Changes (including i915): - Fix ttm_bo_access() usage (Auld) - Power request asserting/deasserting for Xe3lpd (Mika) - One Type-C conversion towards struct intel_display (Mika) Driver Changes: - GuC capture related fixes (Everest, Zhanjun) - Move old workaround to OOB infra (Lucas) - Compute mode change refactoring (Bala) - Add ufence and g2h flushes for LNL Hybrid timeouts (Nirmoy) - Avoid unnecessary OOM kills (Thomas) - Restore system memory GGTT mappings (Brost) - Fix build error for XE_IOCTL_DBG macro (Gyeyoung) - Documentation updates and fixes (Lucas, Randy) - A few exec IOCTL fixes (Brost) - Fix potential GGTT allocation leak (Michal) - Fix races on fdinfo (Lucas) - SRIOV VF: Post-migration recovery worker basis (Tomasz) - GuC Communication fixes and improvements (Michal, John, Tomasz, Auld, Jonathan) - SRIOV PF: Add support for VF scheduling priority - Trace improvements (Lucas, Auld, Oak) - Hibernation on igpu fixes and improvements (Auld) - GT oriented logs/asserts improvements (Michal) - Take job list lock in xe_sched_first_pending_job (Nirmoy) - GSC: Improve SW proxy error checking and logging (Daniele) - GuC crash notifications & drop default log verbosity (John) - Fix races on fdinfo (Lucas) - Fix runtime_pm handling in OA (Ashutosh) - Allow fault injection in vm create and vm bind IOCTLs (Francois) - TLB invalidation fixes (Nirmoy, Daniele) - Devcoredump Improvements, doc and fixes (Brost, Lucas, Zhanjun, John) - Wake up waiters after setting ufence->signalled (Nirmoy) - Mark preempt fence workqueue as reclaim (Brost) - Trivial header/flags cleanups (Lucas) - VRAM drop 2G block restriction (Auld) - Drop useless d3cold allowed message (Brost) - SRIOV PF: Drop 2GiB limit of fair LMEM allocation (Michal) - Add another PTL PCI ID (Atwood) - Allow bo mapping on multiple ggtts (Niranjana) - Add support for GuC-to-GuC communication (John) - Update xe2_graphics name string (Roper) - VRAM: fix lpfn check (Auld) - Ad Xe3 workaround (Apoorva) - Migrate fixes (Auld) - Fix non-contiguous VRAM BO access (Brost) - Log throttle reasons (Raag) - Enable PMT support for BMG (Michael) - IRQ related fixes and improvements (Ilia) - Avoid evicting object of the same vm in none fault mode (Oak) - Fix in tests (Nirmoy) - Fix ERR_PTR handling (Mirsad) - Some reg_sr/whitelist fixes and refactors (Lucas) Signed-off-by: Dave Airlie <airlied@redhat.com> # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCAAdFiEEbSBwaO7dZQkcLOKj+mJfZA7rE8oFAmdaHkMACgkQ+mJfZA7r # E8o+twf/XYZTk4O3qQ+yNL3PDQT0NIKjH8mEnmu4udyIw/sYhQe6ji+uh1YutK8Y # 41IQc06qQogTj36bqSwbjThw5asMfRh2sNR/p1uOy7RGUnN25FuYSXEgOeDWi/Ec # xrZE1TKPotFGeGI09KJmzjzMq94cgv97Pxma+5m8BjVsvzXQSzEJ2r9cC6ruSfNT # O5Jq5nqxHSkWUbKCxPnixSlGnH4jbsuiqS1E1pnH+u6ijxsfhOJj686wLn2FRkiw # 6FhXmJBrd8AZ0Q2E7h3UswE5O88I0ALDc58OINAzD1GMyzvZj2vB1pXgj5uNr0/x # Ku4cxu1jprsi+FLUdKAdYpxRBRanow== # =3Ou7 # -----END PGP SIGNATURE----- # gpg: Signature made Thu 12 Dec 2024 09:20:35 AEST # gpg: using RSA key 6D207068EEDD65091C2CE2A3FA625F640EEB13CA # gpg: Good signature from "Rodrigo Vivi <rodrigo.vivi@intel.com>" [unknown] # gpg: aka "Rodrigo Vivi <rodrigo.vivi@gmail.com>" [unknown] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: 6D20 7068 EEDD 6509 1C2C E2A3 FA62 5F64 0EEB 13CA From: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/Z1ofx-fExLQKV_e4@intel.com
2024-12-03drm/ttm: use GEM references for VM mappingsChristian König1-7/+7
Instead of a TTM reference grab a GEM reference whenever necessary for a VM mapping. Signed-off-by: Christian König <christian.koenig@amd.com> Reviewed-by: Matthew Brost <matthew.brost@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240723121750.2086-7-christian.koenig@amd.com
2024-11-28drm/ttm: Add ttm_bo_accessMatthew Brost1-8/+32
Non-contiguous VRAM cannot easily be mapped in TTM nor can non-visible VRAM easily be accessed. Add ttm_bo_access, which is similar to ttm_bo_vm_access, to access such memory. v4: - Fix checkpatch warnings (CI) v5: - Fix checkpatch warnings (CI) v6: - Fix kernel doc (Auld) v7: - Move ttm_bo_access to ttm_bo_vm.c (Christian) Cc: Christian König <christian.koenig@amd.com> Reported-by: Christoph Manszewski <christoph.manszewski@intel.com> Suggested-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Tested-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Matthew Auld <matthew.auld@intel.com> Reviewed-by: Christian König <christian.koenig@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20241126174615.2665852-3-matthew.brost@intel.com
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-08 14:29:08 +0300