diff options
| author | Alexandre Ghiti <alex@ghiti.fr> | 2019-05-14 02:19:04 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 18:47:47 +0200 |
| commit | 4eb0716e868eed963967adb0b1b11d9bd8ca1d01 (patch) | |
| tree | 9a0c02c0e31c0c3c462796f024986a02e3b1fc45 /arch/s390 | |
| parent | mm: simplify MEMORY_ISOLATION && COMPACTION || CMA into CONTIG_ALLOC (diff) | |
| download | linux-4eb0716e868eed963967adb0b1b11d9bd8ca1d01.tar.xz linux-4eb0716e868eed963967adb0b1b11d9bd8ca1d01.zip | |
hugetlb: allow to free gigantic pages regardless of the configuration
On systems without CONTIG_ALLOC activated but that support gigantic pages,
boottime reserved gigantic pages can not be freed at all. This patch
simply enables the possibility to hand back those pages to memory
allocator.
Link: http://lkml.kernel.org/r/20190327063626.18421-5-alex@ghiti.fr
Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Acked-by: David S. Miller <davem@davemloft.net> [sparc]
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Andy Lutomirsky <luto@kernel.org>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: "H . Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/Kconfig | 2 | ||||
| -rw-r--r-- | arch/s390/include/asm/hugetlb.h | 8 |
2 files changed, 6 insertions, 4 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 724dbc6b7d33..d0c046af65fa 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -63,7 +63,7 @@ config S390 select ARCH_HAS_ELF_RANDOMIZE select ARCH_HAS_FORTIFY_SOURCE select ARCH_HAS_GCOV_PROFILE_ALL - select ARCH_HAS_GIGANTIC_PAGE if CONTIG_ALLOC + select ARCH_HAS_GIGANTIC_PAGE select ARCH_HAS_KCOV select ARCH_HAS_PTE_SPECIAL select ARCH_HAS_SET_MEMORY diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h index 2d1afa58a4b6..bb59dd964590 100644 --- a/arch/s390/include/asm/hugetlb.h +++ b/arch/s390/include/asm/hugetlb.h @@ -116,7 +116,9 @@ static inline pte_t huge_pte_modify(pte_t pte, pgprot_t newprot) return pte_modify(pte, newprot); } -#ifdef CONFIG_ARCH_HAS_GIGANTIC_PAGE -static inline bool gigantic_page_supported(void) { return true; } -#endif +static inline bool gigantic_page_runtime_supported(void) +{ + return true; +} + #endif /* _ASM_S390_HUGETLB_H */ |