diff options
| author | Suren Baghdasaryan <surenb@google.com> | 2024-07-03 20:42:25 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2024-07-13 01:52:20 +0300 |
| commit | 3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452 (patch) | |
| tree | cf59b04a3a4b987e4305704fc234eb45f47384df /include/linux/hid_bpf.h | |
| parent | cd1e0dac3a3e57d86085eea95ab0cf3172950156 (diff) | |
| download | linux-3b0ba54d5f8ff60553c01d3ec3c607ab7bb3b452.tar.xz | |
mm: add comments for allocation helpers explaining why they are macros
A number of allocation helper functions were converted into macros to
account them at the call sites. Add a comment for each converted
allocation helper explaining why it has to be a macro and why we typecast
the return value wherever required. The patch also moves
acpi_os_acquire_object() closer to other allocation helpers to group them
together under the same comment. The patch has no functional changes.
Link: https://lkml.kernel.org/r/20240703174225.3891393-1-surenb@google.com
Fixes: 2c321f3f70bc ("mm: change inlined allocation helpers to account at the call site")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Christian König <christian.koenig@amd.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jan Kara <jack@suse.cz>
Cc: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Thorsten Blum <thorsten.blum@toblux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'include/linux/hid_bpf.h')
| -rw-r--r-- | include/linux/hid_bpf.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/hid_bpf.h b/include/linux/hid_bpf.h index eec2592dec12..99a3edb6cf07 100644 --- a/include/linux/hid_bpf.h +++ b/include/linux/hid_bpf.h @@ -152,6 +152,11 @@ static inline int hid_bpf_connect_device(struct hid_device *hdev) { return 0; } static inline void hid_bpf_disconnect_device(struct hid_device *hdev) {} static inline void hid_bpf_destroy_device(struct hid_device *hid) {} static inline void hid_bpf_device_init(struct hid_device *hid) {} +/* + * This specialized allocator has to be a macro for its allocations to be + * accounted separately (to have a separate alloc_tag). The typecast is + * intentional to enforce typesafety. + */ #define call_hid_bpf_rdesc_fixup(_hdev, _rdesc, _size) \ ((u8 *)kmemdup(_rdesc, *(_size), GFP_KERNEL)) |