3c06a5ce5e
Not all non-GKI platforms support disabling ANDROID_STRUCT_PADDING, as some modules may require Android vendor data. However, it would be beneficial to have the option to disable some of the struct paddings, such as ANDROID_KABI_RESERVE, for memory savings given a situation where the ANDROID_STRUCT_PADDING config cannot be disabled. Split the ANDROID_STRUCT_PADDING config into two configs, one to control ANDROID_VENDOR_DATA and ANDROID_OEM_DATA, and another to control ANDROID_KABI_RESERVE. Bug: 206561931 Change-Id: Iea4b962dff386a17c9bef20ae048be4e17bf43ab Signed-off-by: Jaskaran Singh <quic_jasksing@quicinc.com>
51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* android_vendor.h - Android vendor data
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*
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* Copyright 2020 Google LLC
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*
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* These macros are to be used to reserve space in kernel data structures
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* for use by vendor modules.
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*
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* These macros should be used before the kernel abi is "frozen".
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* Fields can be added to various kernel structures that need space
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* for functionality implemented in vendor modules. The use of
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* these fields is vendor specific.
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*/
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#ifndef _ANDROID_VENDOR_H
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#define _ANDROID_VENDOR_H
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/*
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* ANDROID_VENDOR_DATA
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* Reserve some "padding" in a structure for potential future use.
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* This normally placed at the end of a structure.
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* number: the "number" of the padding variable in the structure. Start with
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* 1 and go up.
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*
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* ANDROID_VENDOR_DATA_ARRAY
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* Same as ANDROID_VENDOR_DATA but allocates an array of u64 with
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* the specified size
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*/
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#ifdef CONFIG_ANDROID_VENDOR_OEM_DATA
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#define ANDROID_VENDOR_DATA(n) u64 android_vendor_data##n
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#define ANDROID_VENDOR_DATA_ARRAY(n, s) u64 android_vendor_data##n[s]
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#define ANDROID_OEM_DATA(n) u64 android_oem_data##n
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#define ANDROID_OEM_DATA_ARRAY(n, s) u64 android_oem_data##n[s]
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#define android_init_vendor_data(p, n) \
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memset(&p->android_vendor_data##n, 0, sizeof(p->android_vendor_data##n))
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#define android_init_oem_data(p, n) \
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memset(&p->android_oem_data##n, 0, sizeof(p->android_oem_data##n))
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#else
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#define ANDROID_VENDOR_DATA(n)
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#define ANDROID_VENDOR_DATA_ARRAY(n, s)
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#define ANDROID_OEM_DATA(n)
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#define ANDROID_OEM_DATA_ARRAY(n, s)
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#define android_init_vendor_data(p, n)
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#define android_init_oem_data(p, n)
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#endif
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#endif /* _ANDROID_VENDOR_H */
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