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authorLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 09:52:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-06-26 09:52:05 -0700
commit47a469421d792dcb91a1e73319d26134241953d2 (patch)
tree6a388381a434ebe87fed2fbb10a53ced7a7ce8b5 /arch/s390
parentc13c81006314ad76c2b31824960a900385601b8b (diff)
parent51229b495340bd7a02ce3622d1966829b67054ea (diff)
Merge branch 'akpm' (patches from Andrew)
Merge second patchbomb from Andrew Morton: - most of the rest of MM - lots of misc things - procfs updates - printk feature work - updates to get_maintainer, MAINTAINERS, checkpatch - lib/ updates * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (96 commits) exit,stats: /* obey this comment */ coredump: add __printf attribute to cn_*printf functions coredump: use from_kuid/kgid when formatting corename fs/reiserfs: remove unneeded cast NILFS2: support NFSv2 export fs/befs/btree.c: remove unneeded initializations fs/minix: remove unneeded cast init/do_mounts.c: add create_dev() failure log kasan: remove duplicate definition of the macro KASAN_FREE_PAGE fs/efs: femove unneeded cast checkpatch: emit "NOTE: <types>" message only once after multiple files checkpatch: emit an error when there's a diff in a changelog checkpatch: validate MODULE_LICENSE content checkpatch: add multi-line handling for PREFER_ETHER_ADDR_COPY checkpatch: suggest using eth_zero_addr() and eth_broadcast_addr() checkpatch: fix processing of MEMSET issues checkpatch: suggest using ether_addr_equal*() checkpatch: avoid NOT_UNIFIED_DIFF errors on cover-letter.patch files checkpatch: remove local from codespell path checkpatch: add --showfile to allow input via pipe to show filenames ...
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/include/asm/hugetlb.h3
-rw-r--r--arch/s390/include/asm/page.h8
-rw-r--r--arch/s390/kernel/compat_wrapper.c2
-rw-r--r--arch/s390/kernel/setup.c2
-rw-r--r--arch/s390/mm/hugetlbpage.c65
-rw-r--r--arch/s390/mm/pgtable.c2
6 files changed, 13 insertions, 69 deletions
diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h
index dfb542ade6b1..0130d0379edd 100644
--- a/arch/s390/include/asm/hugetlb.h
+++ b/arch/s390/include/asm/hugetlb.h
@@ -37,9 +37,6 @@ static inline int prepare_hugepage_range(struct file *file,
#define arch_clear_hugepage_flags(page) do { } while (0)
-int arch_prepare_hugepage(struct page *page);
-void arch_release_hugepage(struct page *page);
-
static inline void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
pte_t *ptep)
{
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 53eacbd4f09b..dd345238d9a7 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -17,7 +17,10 @@
#define PAGE_DEFAULT_ACC 0
#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4)
-#define HPAGE_SHIFT 20
+#include <asm/setup.h>
+#ifndef __ASSEMBLY__
+
+extern int HPAGE_SHIFT;
#define HPAGE_SIZE (1UL << HPAGE_SHIFT)
#define HPAGE_MASK (~(HPAGE_SIZE - 1))
#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
@@ -27,9 +30,6 @@
#define ARCH_HAS_PREPARE_HUGEPAGE
#define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH
-#include <asm/setup.h>
-#ifndef __ASSEMBLY__
-
static inline void storage_key_init_range(unsigned long start, unsigned long end)
{
#if PAGE_DEFAULT_KEY
diff --git a/arch/s390/kernel/compat_wrapper.c b/arch/s390/kernel/compat_wrapper.c
index d7fa2f0f1425..f8498dde67b1 100644
--- a/arch/s390/kernel/compat_wrapper.c
+++ b/arch/s390/kernel/compat_wrapper.c
@@ -202,7 +202,7 @@ COMPAT_SYSCALL_WRAP1(epoll_create1, int, flags);
COMPAT_SYSCALL_WRAP2(tkill, int, pid, int, sig);
COMPAT_SYSCALL_WRAP3(tgkill, int, tgid, int, pid, int, sig);
COMPAT_SYSCALL_WRAP5(perf_event_open, struct perf_event_attr __user *, attr_uptr, pid_t, pid, int, cpu, int, group_fd, unsigned long, flags);
-COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, int, tls_val);
+COMPAT_SYSCALL_WRAP5(clone, unsigned long, newsp, unsigned long, clone_flags, int __user *, parent_tidptr, int __user *, child_tidptr, unsigned long, tls);
COMPAT_SYSCALL_WRAP2(fanotify_init, unsigned int, flags, unsigned int, event_f_flags);
COMPAT_SYSCALL_WRAP4(prlimit64, pid_t, pid, unsigned int, resource, const struct rlimit64 __user *, new_rlim, struct rlimit64 __user *, old_rlim);
COMPAT_SYSCALL_WRAP5(name_to_handle_at, int, dfd, const char __user *, name, struct file_handle __user *, handle, int __user *, mnt_id, int, flag);
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index af4f41d52cde..73941bf42350 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -880,6 +880,8 @@ void __init setup_arch(char **cmdline_p)
*/
setup_hwcaps();
+ HPAGE_SHIFT = MACHINE_HAS_HPAGE ? 20 : 0;
+
/*
* Create kernel page tables and switch to virtual addressing.
*/
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index c3f8e3df92ff..fb4bf2c4379e 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -86,31 +86,16 @@ static inline pte_t __pmd_to_pte(pmd_t pmd)
void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
- pmd_t pmd;
+ pmd_t pmd = __pte_to_pmd(pte);
- pmd = __pte_to_pmd(pte);
- if (!MACHINE_HAS_HPAGE) {
- /* Emulated huge ptes loose the dirty and young bit */
- pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN;
- pmd_val(pmd) |= pte_page(pte)[1].index;
- } else
- pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE;
+ pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE;
*(pmd_t *) ptep = pmd;
}
pte_t huge_ptep_get(pte_t *ptep)
{
- unsigned long origin;
- pmd_t pmd;
+ pmd_t pmd = *(pmd_t *) ptep;
- pmd = *(pmd_t *) ptep;
- if (!MACHINE_HAS_HPAGE && pmd_present(pmd)) {
- origin = pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN;
- pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN;
- pmd_val(pmd) |= *(unsigned long *) origin;
- /* Emulated huge ptes are young and dirty by definition */
- pmd_val(pmd) |= _SEGMENT_ENTRY_YOUNG | _SEGMENT_ENTRY_DIRTY;
- }
return __pmd_to_pte(pmd);
}
@@ -125,45 +110,6 @@ pte_t huge_ptep_get_and_clear(struct mm_struct *mm,
return pte;
}
-int arch_prepare_hugepage(struct page *page)
-{
- unsigned long addr = page_to_phys(page);
- pte_t pte;
- pte_t *ptep;
- int i;
-
- if (MACHINE_HAS_HPAGE)
- return 0;
-
- ptep = (pte_t *) pte_alloc_one(&init_mm, addr);
- if (!ptep)
- return -ENOMEM;
-
- pte_val(pte) = addr;
- for (i = 0; i < PTRS_PER_PTE; i++) {
- set_pte_at(&init_mm, addr + i * PAGE_SIZE, ptep + i, pte);
- pte_val(pte) += PAGE_SIZE;
- }
- page[1].index = (unsigned long) ptep;
- return 0;
-}
-
-void arch_release_hugepage(struct page *page)
-{
- pte_t *ptep;
-
- if (MACHINE_HAS_HPAGE)
- return;
-
- ptep = (pte_t *) page[1].index;
- if (!ptep)
- return;
- clear_table((unsigned long *) ptep, _PAGE_INVALID,
- PTRS_PER_PTE * sizeof(pte_t));
- page_table_free(&init_mm, (unsigned long *) ptep);
- page[1].index = 0;
-}
-
pte_t *huge_pte_alloc(struct mm_struct *mm,
unsigned long addr, unsigned long sz)
{
@@ -195,10 +141,7 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
int pmd_huge(pmd_t pmd)
{
- if (!MACHINE_HAS_HPAGE)
- return 0;
-
- return !!(pmd_val(pmd) & _SEGMENT_ENTRY_LARGE);
+ return pmd_large(pmd);
}
int pud_huge(pud_t pud)
diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c
index b33f66110ca9..33082d0d101b 100644
--- a/arch/s390/mm/pgtable.c
+++ b/arch/s390/mm/pgtable.c
@@ -31,6 +31,8 @@
#define ALLOC_ORDER 2
#define FRAG_MASK 0x03
+int HPAGE_SHIFT;
+
unsigned long *crst_table_alloc(struct mm_struct *mm)
{
struct page *page = alloc_pages(GFP_KERNEL, ALLOC_ORDER);