kernel/linux.git/drivers/char/agp/backend.c, branch linux-7.1.y

char: remove unnecessary module_init/exit functions

2026-04-02T15:05:53+00:00

Two char drivers have unnecessary module_init and module_exit functions that are empty or just print a message. Remove them. Note that if a module_init function exists, a module_exit function must also exist; otherwise, the module cannot be unloaded. Signed-off-by: Ethan Nelson-Moore Link: https://patch.msgid.link/20260131020027.45775-1-enelsonmoore@gmail.com Signed-off-by: Greg Kroah-Hartman

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

char/agp: Remove frontend code

2023-12-06T09:08:41+00:00

The AGP subsystem supports a user-space interface via /dev/agpgart. It is only enabled with DRM support for mode setting in user space. (i.e., CONFIG_DRM_LEGACY). All of that DRM code has been removed and the option will go away. Hence remove the AGP frontend. Modern DRM drivers with kernel mode setting handle AGP support internally. Signed-off-by: Thomas Zimmermann Reviewed-by: David Airlie Reviewed-by: Daniel Vetter Acked-by: Alex Deucher Link: https://patchwork.freedesktop.org/patch/msgid/20231122122449.11588-14-tzimmermann@suse.de

agp: Documentation fixes

2022-01-14T14:12:22+00:00

Fix compiler warnings drivers/char/agp/backend.c:68: warning: Function parameter or member 'pdev' not described in 'agp_backend_acquire' drivers/char/agp/backend.c:93: warning: Function parameter or member 'bridge' not described in 'agp_backend_release' by adding the necessary documentation. Signed-off-by: Thomas Zimmermann Acked-by: Helge Deller Link: https://patchwork.freedesktop.org/patch/msgid/20211201114645.15384-4-tzimmermann@suse.de

mm: convert totalram_pages and totalhigh_pages variables to atomic

2018-12-28T20:11:47+00:00

totalram_pages and totalhigh_pages are made static inline function. Main motivation was that managed_page_count_lock handling was complicating things. It was discussed in length here, https://lore.kernel.org/patchwork/patch/995739/#1181785 So it seemes better to remove the lock and convert variables to atomic, with preventing poteintial store-to-read tearing as a bonus. [akpm@linux-foundation.org: coding style fixes] Link: http://lkml.kernel.org/r/1542090790-21750-4-git-send-email-arunks@codeaurora.org Signed-off-by: Arun KS Suggested-by: Michal Hocko Suggested-by: Vlastimil Babka Reviewed-by: Konstantin Khlebnikov Reviewed-by: Pavel Tatashin Acked-by: Michal Hocko Acked-by: Vlastimil Babka Cc: David Hildenbrand Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

agp: Fix up email address & attributions in AGP MODULE_AUTHOR tags

2014-12-23T10:03:10+00:00

- Remove soon-to-be-dead @redhat address. - Jeff Hartmann wrote the bulk of the original backend code, and should at least get a mention in the MODULE_AUTHOR for backend.o - Various people at Intel have done a lot more work than myself on the intel-* drivers, so again, mention that. Signed-off-by: Dave Jones Signed-off-by: Dave Airlie

agp: fix scratch page cleanup

2012-01-26T18:36:48+00:00

In error cleanup of agp_backend_initialize() and in agp_backend_cleanup(), agp_destroy_page() is passed virtual address of the scratch page. This leads to a kernel warning if the initialization fails (or upon regular cleanup) as pointer to struct page should be passed instead. Signed-off-by: Michal Kubecek Signed-off-by: Dave Airlie

char: Convert vmalloc/memset to vzalloc

2011-09-15T11:55:03+00:00

Signed-off-by: Joe Perches Signed-off-by: Jiri Kosina

agp: kill agp_(map|unmap)_page

2010-09-21T10:36:11+00:00

Only used to remap the scratch page. Now that intel-gtt does this itself, kill the support code. Cc: Dave Airlie Signed-off-by: Daniel Vetter Signed-off-by: Chris Wilson