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-rw-r--r--arch/i386/kernel/efi.c2
-rw-r--r--arch/i386/kernel/smp.c28
-rw-r--r--arch/i386/kernel/sys_i386.c25
-rw-r--r--arch/i386/kernel/timers/timer_hpet.c2
-rw-r--r--arch/i386/kernel/timers/timer_tsc.c2
-rw-r--r--arch/i386/mm/hugetlbpage.c12
-rw-r--r--arch/i386/mm/init.c6
-rw-r--r--arch/i386/mm/pageattr.c20
8 files changed, 40 insertions, 57 deletions
diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c
index c9cad7ba0d2..aeabb419686 100644
--- a/arch/i386/kernel/efi.c
+++ b/arch/i386/kernel/efi.c
@@ -115,7 +115,7 @@ static void efi_call_phys_epilog(void)
unsigned long cr4;
struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
- cpu_gdt_descr->address = __va(cpu_gdt_descr->address);
+ cpu_gdt_descr->address = (unsigned long)__va(cpu_gdt_descr->address);
load_gdt(cpu_gdt_descr);
cr4 = read_cr4();
diff --git a/arch/i386/kernel/smp.c b/arch/i386/kernel/smp.c
index 218d725a5a1..d134e9643a5 100644
--- a/arch/i386/kernel/smp.c
+++ b/arch/i386/kernel/smp.c
@@ -504,27 +504,23 @@ void unlock_ipi_call_lock(void)
spin_unlock_irq(&call_lock);
}
-static struct call_data_struct * call_data;
-
-/*
- * this function sends a 'generic call function' IPI to all other CPUs
- * in the system.
- */
-
-int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
- int wait)
-/*
- * [SUMMARY] Run a function on all other CPUs.
- * <func> The function to run. This must be fast and non-blocking.
- * <info> An arbitrary pointer to pass to the function.
- * <nonatomic> currently unused.
- * <wait> If true, wait (atomically) until function has completed on other CPUs.
- * [RETURNS] 0 on success, else a negative status code. Does not return until
+static struct call_data_struct *call_data;
+
+/**
+ * smp_call_function(): Run a function on all other CPUs.
+ * @func: The function to run. This must be fast and non-blocking.
+ * @info: An arbitrary pointer to pass to the function.
+ * @nonatomic: currently unused.
+ * @wait: If true, wait (atomically) until function has completed on other CPUs.
+ *
+ * Returns 0 on success, else a negative status code. Does not return until
* remote CPUs are nearly ready to execute <<func>> or are or have executed.
*
* You must not call this function with disabled interrupts or from a
* hardware interrupt handler or from a bottom half handler.
*/
+int smp_call_function (void (*func) (void *info), void *info, int nonatomic,
+ int wait)
{
struct call_data_struct data;
int cpus;
diff --git a/arch/i386/kernel/sys_i386.c b/arch/i386/kernel/sys_i386.c
index a4a61976ecb..8fdb1fb17a5 100644
--- a/arch/i386/kernel/sys_i386.c
+++ b/arch/i386/kernel/sys_i386.c
@@ -40,14 +40,13 @@ asmlinkage int sys_pipe(unsigned long __user * fildes)
return error;
}
-/* common code for old and new mmaps */
-static inline long do_mmap2(
- unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
+asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
+ unsigned long prot, unsigned long flags,
+ unsigned long fd, unsigned long pgoff)
{
int error = -EBADF;
- struct file * file = NULL;
+ struct file *file = NULL;
+ struct mm_struct *mm = current->mm;
flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
if (!(flags & MAP_ANONYMOUS)) {
@@ -56,9 +55,9 @@ static inline long do_mmap2(
goto out;
}
- down_write(&current->mm->mmap_sem);
+ down_write(&mm->mmap_sem);
error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&current->mm->mmap_sem);
+ up_write(&mm->mmap_sem);
if (file)
fput(file);
@@ -66,13 +65,6 @@ out:
return error;
}
-asmlinkage long sys_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
-{
- return do_mmap2(addr, len, prot, flags, fd, pgoff);
-}
-
/*
* Perform the select(nd, in, out, ex, tv) and mmap() system
* calls. Linux/i386 didn't use to be able to handle more than
@@ -101,7 +93,8 @@ asmlinkage int old_mmap(struct mmap_arg_struct __user *arg)
if (a.offset & ~PAGE_MASK)
goto out;
- err = do_mmap2(a.addr, a.len, a.prot, a.flags, a.fd, a.offset >> PAGE_SHIFT);
+ err = sys_mmap2(a.addr, a.len, a.prot, a.flags,
+ a.fd, a.offset >> PAGE_SHIFT);
out:
return err;
}
diff --git a/arch/i386/kernel/timers/timer_hpet.c b/arch/i386/kernel/timers/timer_hpet.c
index be242723c33..17a6fe7166e 100644
--- a/arch/i386/kernel/timers/timer_hpet.c
+++ b/arch/i386/kernel/timers/timer_hpet.c
@@ -46,7 +46,7 @@ static seqlock_t monotonic_lock = SEQLOCK_UNLOCKED;
*
* -johnstul@us.ibm.com "math is hard, lets go shopping!"
*/
-static unsigned long cyc2ns_scale;
+static unsigned long cyc2ns_scale __read_mostly;
#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
static inline void set_cyc2ns_scale(unsigned long cpu_khz)
diff --git a/arch/i386/kernel/timers/timer_tsc.c b/arch/i386/kernel/timers/timer_tsc.c
index a7f5a2aceba..5e41ee29c8c 100644
--- a/arch/i386/kernel/timers/timer_tsc.c
+++ b/arch/i386/kernel/timers/timer_tsc.c
@@ -74,7 +74,7 @@ late_initcall(start_lost_tick_compensation);
*
* -johnstul@us.ibm.com "math is hard, lets go shopping!"
*/
-static unsigned long cyc2ns_scale;
+static unsigned long cyc2ns_scale __read_mostly;
#define CYC2NS_SCALE_FACTOR 10 /* 2^10, carefully chosen */
static inline void set_cyc2ns_scale(unsigned long cpu_khz)
diff --git a/arch/i386/mm/hugetlbpage.c b/arch/i386/mm/hugetlbpage.c
index d524127c9af..a7d89158541 100644
--- a/arch/i386/mm/hugetlbpage.c
+++ b/arch/i386/mm/hugetlbpage.c
@@ -48,18 +48,6 @@ pte_t *huge_pte_offset(struct mm_struct *mm, unsigned long addr)
return (pte_t *) pmd;
}
-/*
- * This function checks for proper alignment of input addr and len parameters.
- */
-int is_aligned_hugepage_range(unsigned long addr, unsigned long len)
-{
- if (len & ~HPAGE_MASK)
- return -EINVAL;
- if (addr & ~HPAGE_MASK)
- return -EINVAL;
- return 0;
-}
-
#if 0 /* This is just for testing */
struct page *
follow_huge_addr(struct mm_struct *mm, unsigned long address, int write)
diff --git a/arch/i386/mm/init.c b/arch/i386/mm/init.c
index 2700f01994b..7ba55a6e2db 100644
--- a/arch/i386/mm/init.c
+++ b/arch/i386/mm/init.c
@@ -270,7 +270,7 @@ static void __init permanent_kmaps_init(pgd_t *pgd_base)
static void __meminit free_new_highpage(struct page *page)
{
- set_page_count(page, 1);
+ init_page_count(page);
__free_page(page);
totalhigh_pages++;
}
@@ -727,7 +727,7 @@ void free_initmem(void)
addr = (unsigned long)(&__init_begin);
for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
ClearPageReserved(virt_to_page(addr));
- set_page_count(virt_to_page(addr), 1);
+ init_page_count(virt_to_page(addr));
memset((void *)addr, 0xcc, PAGE_SIZE);
free_page(addr);
totalram_pages++;
@@ -766,7 +766,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
printk (KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10);
for (; start < end; start += PAGE_SIZE) {
ClearPageReserved(virt_to_page(start));
- set_page_count(virt_to_page(start), 1);
+ init_page_count(virt_to_page(start));
free_page(start);
totalram_pages++;
}
diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c
index d0cadb33b54..92c3d9f0e73 100644
--- a/arch/i386/mm/pageattr.c
+++ b/arch/i386/mm/pageattr.c
@@ -51,6 +51,13 @@ static struct page *split_large_page(unsigned long address, pgprot_t prot,
if (!base)
return NULL;
+ /*
+ * page_private is used to track the number of entries in
+ * the page table page that have non standard attributes.
+ */
+ SetPagePrivate(base);
+ page_private(base) = 0;
+
address = __pa(address);
addr = address & LARGE_PAGE_MASK;
pbase = (pte_t *)page_address(base);
@@ -143,11 +150,12 @@ __change_page_attr(struct page *page, pgprot_t prot)
return -ENOMEM;
set_pmd_pte(kpte,address,mk_pte(split, ref_prot));
kpte_page = split;
- }
- get_page(kpte_page);
+ }
+ page_private(kpte_page)++;
} else if ((pte_val(*kpte) & _PAGE_PSE) == 0) {
set_pte_atomic(kpte, mk_pte(page, PAGE_KERNEL));
- __put_page(kpte_page);
+ BUG_ON(page_private(kpte_page) == 0);
+ page_private(kpte_page)--;
} else
BUG();
@@ -157,10 +165,8 @@ __change_page_attr(struct page *page, pgprot_t prot)
* replace it with a largepage.
*/
if (!PageReserved(kpte_page)) {
- /* memleak and potential failed 2M page regeneration */
- BUG_ON(!page_count(kpte_page));
-
- if (cpu_has_pse && (page_count(kpte_page) == 1)) {
+ if (cpu_has_pse && (page_private(kpte_page) == 0)) {
+ ClearPagePrivate(kpte_page);
list_add(&kpte_page->lru, &df_list);
revert_page(kpte_page, address);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-05 00:50:41 +0000