kernel/linux.git/drivers/gpu/drm/xe/xe_debugfs.c, branch v6.12.80

drm/xe/debugfs: Add missing xe_pm_runtime_put in wedge_mode_set

2025-05-29T09:02:50+00:00

[ Upstream commit b31e668d3111b100d16fd7db8db335328ce8c6d5 ] xe_pm_runtime_put is missed in the failure path. Cc: Rodrigo Vivi Signed-off-by: Shuicheng Lin Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20250213230322.1180621-1-shuicheng.lin@intel.com Signed-off-by: Rodrigo Vivi Signed-off-by: Sasha Levin

drm/xe/debugfs: fixed the return value of wedged_mode_set

2025-05-29T09:02:50+00:00

[ Upstream commit 6884d2051011f4db9e2f0b85709c79a8ced13bd6 ] It is generally expected that the write() function should return a positive value indicating the number of bytes written or a negative error code if an error occurs. Returning 0 is unusual and can lead to unexpected behavior. When the user program writes the same value to wedged_mode twice in a row, a lockup will occur, because the value expected to be returned by the write() function inside the program should be equal to the actual written value instead of 0. To reproduce the issue: echo 1 > /sys/kernel/debug/dri/0/wedged_mode echo 1 > /sys/kernel/debug/dri/0/wedged_mode <- lockup here Signed-off-by: Xin Wang Cc: Rodrigo Vivi Cc: Fei Yang Cc: Shuicheng Lin Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20250213223615.2327367-1-x.wang@intel.com Signed-off-by: Rodrigo Vivi Signed-off-by: Sasha Levin

drm/xe: Make wedged_mode debugfs writable

2024-10-08T23:06:24+00:00

The intent of this debugfs entry is to allow modification of wedging behavior, either from IGT tests or during manual debug; it should be marked as writable to properly reflect this. In practice this hasn't caused a problem because we always access wedged_mode as root, which ignores file permissions, but it's still misleading to have the entry incorrectly marked as RO. Cc: Rodrigo Vivi Fixes: 6b8ef44cc0a9 ("drm/xe: Introduce the wedged_mode debugfs") Signed-off-by: Matt Roper Reviewed-by: Gustavo Sousa Link: https://patchwork.freedesktop.org/patch/msgid/20241002230620.1249258-2-matthew.d.roper@intel.com (cherry picked from commit 93d93813422758f6c99289de446b19184019ef5a) Signed-off-by: Lucas De Marchi

Merge tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2024-09-21T15:20:50+00:00

Pull non-MM updates from Andrew Morton: "Many singleton patches - please see the various changelogs for details. Quite a lot of nilfs2 work this time around. Notable patch series in this pull request are: - "mul_u64_u64_div_u64: new implementation" by Nicolas Pitre, with assistance from Uwe Kleine-König. Reimplement mul_u64_u64_div_u64() to provide (much) more accurate results. The current implementation was causing Uwe some issues in the PWM drivers. - "xz: Updates to license, filters, and compression options" from Lasse Collin. Miscellaneous maintenance and kinor feature work to the xz decompressor. - "Fix some GDB command error and add some GDB commands" from Kuan-Ying Lee. Fixes and enhancements to the gdb scripts. - "treewide: add missing MODULE_DESCRIPTION() macros" from Jeff Johnson. Adds lots of MODULE_DESCRIPTIONs, thus fixing lots of warnings about this. - "nilfs2: add support for some common ioctls" from Ryusuke Konishi. Adds various commonly-available ioctls to nilfs2. - "This series fixes a number of formatting issues in kernel doc comments" from Ryusuke Konishi does that. - "nilfs2: prevent unexpected ENOENT propagation" from Ryusuke Konishi. Fix issues where -ENOENT was being unintentionally and inappropriately returned to userspace. - "nilfs2: assorted cleanups" from Huang Xiaojia. - "nilfs2: fix potential issues with empty b-tree nodes" from Ryusuke Konishi fixes some issues which can occur on corrupted nilfs2 filesystems. - "scripts/decode_stacktrace.sh: improve error reporting and usability" from Luca Ceresoli does those things" * tag 'mm-nonmm-stable-2024-09-21-07-52' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (103 commits) list: test: increase coverage of list_test_list_replace*() list: test: fix tests for list_cut_position() proc: use __auto_type more treewide: correct the typo 'retun' ocfs2: cleanup return value and mlog in ocfs2_global_read_info() nilfs2: remove duplicate 'unlikely()' usage nilfs2: fix potential oob read in nilfs_btree_check_delete() nilfs2: determine empty node blocks as corrupted nilfs2: fix potential null-ptr-deref in nilfs_btree_insert() user_namespace: use kmemdup_array() instead of kmemdup() for multiple allocation tools/mm: rm thp_swap_allocator_test when make clean squashfs: fix percpu address space issues in decompressor_multi_percpu.c lib: glob.c: added null check for character class nilfs2: refactor nilfs_segctor_thread() nilfs2: use kthread_create and kthread_stop for the log writer thread nilfs2: remove sc_timer_task nilfs2: do not repair reserved inode bitmap in nilfs_new_inode() nilfs2: eliminate the shared counter and spinlock for i_generation nilfs2: separate inode type information from i_state field nilfs2: use the BITS_PER_LONG macro ...

drm/xe: clean up fault injection usage

2024-09-02T03:43:33+00:00

With the proper stubs in place in linux/fault-inject.h, we can remove a bunch of conditional compilation for CONFIG_FAULT_INJECTION=n. Link: https://lkml.kernel.org/r/20240813121237.2382534-3-jani.nikula@intel.com Signed-off-by: Jani Nikula Reviewed-by: Thomas Hellström Reviewed-by: Himal Prasad Ghimiray Cc: Akinobu Mita Cc: Lucas De Marchi Cc: Rodrigo Vivi Cc: Abhinav Kumar Cc: Dmitry Baryshkov Cc: Rob Clark Signed-off-by: Andrew Morton

drm/xe: remove display stepping handling

2024-08-22T12:48:21+00:00

The code is now unused. Remove. Reviewed-by: Matt Roper Acked-by: Lucas De Marchi Link: https://patchwork.freedesktop.org/patch/msgid/19bc7a3197f2bc6f3c0d337487ab19f3b7f5612a.1724180287.git.jani.nikula@intel.com Signed-off-by: Jani Nikula

drm/xe: Don't rely on xe_force_wake.h to be included elsewhere

2024-05-07T21:21:17+00:00

While xe_force_wake.h is now included from the xe_device.h, we want to drop that include as we don't need it there. Explicitly include xe_force_wake.h where needed. Signed-off-by: Michal Wajdeczko Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20240507110959.2747-3-michal.wajdeczko@intel.com

drm/xe/debugfs: Get a runtime_pm reference when setting wedged mode

2024-05-03T12:54:32+00:00

This function is another entry point where it must be ensured that the device resumes before operating on the GuC, so grab a runtime_pm reference. This fixes inner xe_pm_runtime_get_noresume calls which were previously failing. Cc: Rodrigo Vivi Signed-off-by: Francois Dugast Reviewed-by: Rodrigo Vivi Link: https://patchwork.freedesktop.org/patch/msgid/20240503082450.268335-1-francois.dugast@intel.com Signed-off-by: Rodrigo Vivi

Merge drm/drm-next into drm-xe-next

2024-05-02T07:46:12+00:00

Avoid falling too far behind drm-next. Signed-off-by: Thomas Hellström

Merge tag 'drm-misc-next-2024-04-25' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-next

2024-04-26T03:29:04+00:00

drm-misc-next for v6.10-rc1: UAPI Changes: Cross-subsystem Changes: - Devicetree updates for rockchip (#sound-dai-cells) - Add dt bindings for new panels. - Change bridge/tc358775 dt bindings. Core Changes: - Fix SIZE_HINTS cursor property doc. - Parse topology blocks for all DispID < 2.0. - Implement support for tracking cleared free memory, use it in amdgpu. - Drop seq_file.h from drm_print.h, and include debugfs.h explicitly where needed (drivers). Driver Changes: - Small fixes to rockchip, panthor, v3d, bridge chaining, xlx. - Add Khadas TS050 V2, EDO RM69380 OLED, CSOT MNB601LS1-1 panels, - Add SAM9X7 SoC's LVDS controller. - More driver conversions to struct drm_edid. - Support tc358765 in tc358775 bridge. Signed-off-by: Dave Airlie From: Maarten Lankhorst Link: https://patchwork.freedesktop.org/patch/msgid/1ab99848-8fb8-41a6-8967-c4ce6f3634fd@linux.intel.com