Commit c4b558d5 authored by Liu Shixin's avatar Liu Shixin
Browse files

mm/dynamic_pool: introduce PG_pool to mark pages allocated from dpool 

hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I8S9BY


CVE: NA

--------------------------------

Add a new page_flag PG_pool to represent the page allocated from dpool.

Signed-off-by: default avatarLiu Shixin <liushixin2@huawei.com>
parent aeb5fd3e

fs/proc/page.c

+3 −0
Original line number Diff line number Diff line
@@ -222,6 +222,9 @@ u64 stable_page_flags(struct page *page) 
	u |= kpf_copy_bit(k, KPF_ARCH_2,	PG_arch_2);

	u |= kpf_copy_bit(k, KPF_ARCH_3,	PG_arch_3);

#endif

#ifdef CONFIG_DYNAMIC_POOL

	u |= kpf_copy_bit(k, KPF_POOL,		PG_pool);

#endif



	return u;

};

include/linux/page-flags.h

+12 −0
Original line number Diff line number Diff line
@@ -135,6 +135,9 @@ enum pageflags { 
#ifdef CONFIG_ARCH_USES_PG_ARCH_X

	PG_arch_2,

	PG_arch_3,

#endif

#ifdef CONFIG_DYNAMIC_POOL

	PG_pool,		/* Page is allocated from dynamic pool */

#endif

	__NR_PAGEFLAGS,
@@ -603,6 +606,15 @@ PAGEFLAG(VmemmapSelfHosted, vmemmap_self_hosted, PF_ANY) 
PAGEFLAG_FALSE(VmemmapSelfHosted, vmemmap_self_hosted)

#endif



/*

 * PagePool() is used to track page allocated from dpool.

 */

#ifdef CONFIG_DYNAMIC_POOL

PAGEFLAG(Pool, pool, PF_NO_TAIL)

#else

PAGEFLAG_FALSE(Pool, pool)

#endif



/*

 * On an anonymous page mapped into a user virtual memory area,

 * page->mapping points to its anon_vma, not to a struct address_space;

include/trace/events/mmflags.h

+7 −0
Original line number Diff line number Diff line
@@ -90,6 +90,12 @@ 
#define IF_HAVE_PG_IDLE(_name)

#endif



#ifdef CONFIG_DYNAMIC_POOL

#define IF_HAVE_PG_POOL(_name) ,{1UL << PG_##_name, __stringify(_name)}

#else

#define IF_HAVE_PG_POOL(_name)

#endif



#ifdef CONFIG_ARCH_USES_PG_ARCH_X

#define IF_HAVE_PG_ARCH_X(_name) ,{1UL << PG_##_name, __stringify(_name)}

#else
@@ -125,6 +131,7 @@ IF_HAVE_PG_UNCACHED(uncached) \ 
IF_HAVE_PG_HWPOISON(hwpoison)						\

IF_HAVE_PG_IDLE(idle)							\

IF_HAVE_PG_IDLE(young)							\

IF_HAVE_PG_POOL(pool)							\

IF_HAVE_PG_ARCH_X(arch_2)						\

IF_HAVE_PG_ARCH_X(arch_3)

include/uapi/linux/kernel-page-flags.h

+1 −0
Original line number Diff line number Diff line
@@ -36,5 +36,6 @@ 
#define KPF_ZERO_PAGE		24

#define KPF_IDLE		25

#define KPF_PGTABLE		26

#define KPF_POOL		27



#endif /* _UAPILINUX_KERNEL_PAGE_FLAGS_H */

tools/mm/page-types.c

+1 −0
Original line number Diff line number Diff line
@@ -126,6 +126,7 @@ static const char * const page_flag_names[] = { 
	[KPF_PGTABLE]		= "g:pgtable",

	[KPF_ZERO_PAGE]		= "z:zero_page",

	[KPF_IDLE]              = "i:idle_page",

	[KPF_POOL]		= "p:pool",



	[KPF_RESERVED]		= "r:reserved",

	[KPF_MLOCKED]		= "m:mlocked",