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ANDROID: GKI: Add pageflags for OEM

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Add PG_oem_reserved_x pageflags for OEM on 64-bit platform.

These new flags can be used to indicate different states of page.
For example, we can use these pageflags to identify anonymous pages
at different ZRAM compression rates.
These flags will be used in conjunction with different Android
application states. Therefore, I think this is not a generic
modification for all Linux devices and is not suitable for upstream
submission.

Bug: 336964184

Change-Id: Ie68087248866af63ac516d96e3af85222e7a0b50
Signed-off-by: Xiaofeng Yuan <yuanxiaofeng@vivo.com>
This commit is contained in:
Xiaofeng Yuan
2024-06-25 19:51:30 +08:00
committed by Treehugger Robot
parent 724b50f143
commit 85a0c4bef6
2 changed files with 16 additions and 0 deletions
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6
include/linux/page-flags.h
View File

@@ -137,6 +137,12 @@ enum pageflags {
#endif #endif
#ifdef CONFIG_KASAN_HW_TAGS #ifdef CONFIG_KASAN_HW_TAGS
PG_skip_kasan_poison, PG_skip_kasan_poison,
#endif
#ifdef CONFIG_64BIT
PG_oem_reserved_1,
PG_oem_reserved_2,
PG_oem_reserved_3,
PG_oem_reserved_4,
#endif #endif
__NR_PAGEFLAGS, __NR_PAGEFLAGS,

10
include/trace/events/mmflags.h
View File

@@ -104,6 +104,12 @@
#define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string) #define IF_HAVE_PG_SKIP_KASAN_POISON(flag,string)
#endif #endif
#ifdef CONFIG_64BIT
#define IF_HAVE_PG_OEM_RESERVED(_name) ,{1UL << PG_##_name, __stringify(_name)}
#else
#define IF_HAVE_PG_OEM_RESERVED(_name)
#endif
#define __def_pageflag_names \ #define __def_pageflag_names \
{1UL << PG_locked, "locked" }, \ {1UL << PG_locked, "locked" }, \
{1UL << PG_waiters, "waiters" }, \ {1UL << PG_waiters, "waiters" }, \
@@ -132,6 +138,10 @@ IF_HAVE_PG_HWPOISON(PG_hwpoison, "hwpoison" ) \
IF_HAVE_PG_IDLE(PG_young, "young" ) \ IF_HAVE_PG_IDLE(PG_young, "young" ) \
IF_HAVE_PG_IDLE(PG_idle, "idle" ) \ IF_HAVE_PG_IDLE(PG_idle, "idle" ) \
IF_HAVE_PG_ARCH_2(PG_arch_2, "arch_2" ) \ IF_HAVE_PG_ARCH_2(PG_arch_2, "arch_2" ) \
IF_HAVE_PG_OEM_RESERVED(oem_reserved_1) \
IF_HAVE_PG_OEM_RESERVED(oem_reserved_2) \
IF_HAVE_PG_OEM_RESERVED(oem_reserved_3) \
IF_HAVE_PG_OEM_RESERVED(oem_reserved_4) \
IF_HAVE_PG_SKIP_KASAN_POISON(PG_skip_kasan_poison, "skip_kasan_poison") IF_HAVE_PG_SKIP_KASAN_POISON(PG_skip_kasan_poison, "skip_kasan_poison")
#define show_page_flags(flags) \ #define show_page_flags(flags) \