kernel/linux.git/drivers/input/evdev.c, branch v7.0-rc7

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

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

This is the exact same thing as the 'alloc_obj()' version, only much smaller because there are a lot fewer users of the *alloc_flex() interface. As with alloc_obj() version, this was done entirely with mindless brute force, using the same script, except using 'flex' in the pattern rather than 'objs*'. Signed-off-by: Linus Torvalds

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

Input: evdev - switch matching to EV_SYN

2025-07-02T04:02:57+00:00

Each input device has EV_SYN capability. This is enforced by the input core which sets this capability bit unconditionally in input_register_device(). Switch evdev matching from declaring non-zero id->driver_info to match on EV_SYN so that special handling can be removed from input_match_device() and "driver_info" field can be removed from input_device_id structure. Signed-off-by: Dmitry Torokhov

[tree-wide] finally take no_llseek out

2024-09-27T15:18:43+00:00

no_llseek had been defined to NULL two years ago, in commit 868941b14441 ("fs: remove no_llseek") To quote that commit, At -rc1 we'll need do a mechanical removal of no_llseek - git grep -l -w no_llseek | grep -v porting.rst | while read i; do sed -i '/\/d' $i done would do it. Unfortunately, that hadn't been done. Linus, could you do that now, so that we could finally put that thing to rest? All instances are of the form .llseek = no_llseek, so it's obviously safe. Signed-off-by: Al Viro Signed-off-by: Linus Torvalds

Input: evdev - limit amount of data for writes

2024-08-24T06:51:14+00:00

Limit amount of data that can be written into an evdev instance at a given time to 4096 bytes (170 input events) to avoid holding evdev->mutex for too long and starving other users. Reviewed-by: Jeff LaBundy Reviewed-by: Peter Hutterer Link: https://lore.kernel.org/r/Zr5L8TUzkJcB9HcF@google.com Signed-off-by: Dmitry Torokhov

Input: make events() method return number of events processed

2024-07-08T23:22:49+00:00

In preparation to consolidating filtering and event processing in the input core change events() method to return number of events processed by it. Reviewed-by: Jeff LaBundy Reviewed-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20240703213756.3375978-4-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov

Input: evdev - remove ->event() method

2024-07-08T23:22:48+00:00

Input core favors ->events() (batch) method over ->event() method if the former is defined, so there is no point in defining evdev_event() as it is never called. Remove it. Reviewed-by: Jeff LaBundy Reviewed-by: Benjamin Tissoires Link: https://lore.kernel.org/r/20240703213756.3375978-2-dmitry.torokhov@gmail.com Signed-off-by: Dmitry Torokhov

Input: evdev - annotate struct evdev_client with __counted_by

2023-09-30T16:24:16+00:00

Prepare for the coming implementation by GCC and Clang of the __counted_by attribute. Flexible array members annotated with __counted_by can have their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family functions). As found with Coccinelle[1], add __counted_by for struct evdev_client. [1] https://github.com/kees/kernel-tools/blob/trunk/coccinelle/examples/counted_by.cocci Signed-off-by: Kees Cook Reviewed-by: Gustavo A. R. Silva Link: https://lore.kernel.org/r/20230922175027.work.563-kees@kernel.org Signed-off-by: Dmitry Torokhov

Input: evdev - per-client waitgroups

2020-10-07T01:34:15+00:00

All evdev clients share a common waitgroup. On new input events, all clients waiting on this waitgroup are woken up, even those filtering out the events, possibly more than once per event. This leads to duplicated and unwanted wakeups. Split the shared waitgroup into per-client waitgroups for more fine-grained wakeups. Signed-off-by: Kenny Levinsen Link: https://lore.kernel.org/r/20200429184126.2155-1-kl@kl.wtf Signed-off-by: Dmitry Torokhov