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ANDROID: GKI: add android_vendor.h

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This header file is to be used for various macros to help add
vendor specific fields to kernel data structures to enable
value-added features implemented in vendor modules.

They are to be used before the freeze (to anticipate places where
vendor-specific data is required).

Bug: 156285741
Signed-off-by: Todd Kjos <tkjos@google.com>
Change-Id: Ic23b2760ece93facdc51cc35718a4154aba810f9
This commit is contained in:
Todd Kjos
2020-05-11 13:27:22 -07:00
parent 4a0622c268
commit 626b817511
1 changed files with 32 additions and 0 deletions
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include/linux/android_vendor.h
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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* android_vendor.h - Android vendor data
*
* Copyright (C) 2020 Google, Inc.
*
* These macros are to be used to reserve space in kernel data structures
* for use by vendor modules.
*
* These macros should be used before the kernel abi is "frozen".
* Fields can be added to various kernel structures that need space
* for functionality implemented in vendor modules. The use of
* these fields is vendor specific.
*/
#ifndef _ANDROID_VENDOR_H
#define _ANDROID_VENDOR_H
/*
* ANDROID_VENDOR_DATA
* Reserve some "padding" in a structure for potential future use.
* This normally placed at the end of a structure.
* number: the "number" of the padding variable in the structure. Start with
* 1 and go up.
*
* ANDROID_VENDOR_DATA_ARRAY
* Same as ANDROID_VENDOR_DATA but allocates an array of u64 with
* the specified size
*/
#define ANDROID_VENDOR_DATA(n) u64 android_vendor_data##n
#define ANDROID_VENDOR_DATA_ARRAY(n, s) u64 android_vendor_data##n[s]
#endif /* _ANDROID_VENDOR_H */