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ANDROID: mm: add vendor padding for SPECULATIVE_PAGE_FAULTS

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Fields are added on mm_struct, vm_area_struct and vm_fault
to support vendor feature, speculative page fault.

Bug: 155842923
Change-Id: Iedda086d6f83f1353da5a2ed1e24f7ba7dde43f2
Merged-In: Iedda086d6f83f1353da5a2ed1e24f7ba7dde43f2
Signed-off-by: Hyesoo Yu <hyesoo.yu@samsung.com>
This commit is contained in:
Hyesoo Yu 2020-07-06 16:00:01 +09:00 • committed by Suren Baghdasaryan
commit 9411d27783
2 changed files with 6 additions and 0 deletions
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3
include/linux/mm.h
View file

@ -28,6 +28,7 @@
#include <linux/overflow.h>
#include <linux/sizes.h>
#include <linux/android_kabi.h>
#include <linux/android_vendor.h>
struct mempolicy;
struct anon_vma;
@ -453,6 +454,8 @@ struct vm_fault {
*/
unsigned long vma_flags; /* Speculative Page Fault field */
pgprot_t vma_page_prot; /* Speculative Page Fault field */
ANDROID_VENDOR_DATA(1);
ANDROID_VENDOR_DATA(2);
};
/* page entry size for vm->huge_fault() */

3
include/linux/mm_types.h
View file

@ -15,6 +15,7 @@
#include <linux/page-flags-layout.h>
#include <linux/workqueue.h>
#include <linux/android_kabi.h>
#include <linux/android_vendor.h>
#include <asm/mmu.h>
@ -366,6 +367,7 @@ struct vm_area_struct {
ANDROID_KABI_RESERVE(2);
ANDROID_KABI_RESERVE(3);
ANDROID_KABI_RESERVE(4);
ANDROID_VENDOR_DATA(1);
} __randomize_layout;
struct core_thread {
@ -537,6 +539,7 @@ struct mm_struct {
atomic_long_t hugetlb_usage;
#endif
struct work_struct async_put_work;
ANDROID_VENDOR_DATA(1);
} __randomize_layout;
/*