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-rw-r--r--arch/sh/mm/copy_page.S1
-rw-r--r--arch/sh/mm/fault.c39
-rw-r--r--arch/sh/mm/init.c3
-rw-r--r--arch/sh/mm/pmb.c79
4 files changed, 42 insertions, 80 deletions
diff --git a/arch/sh/mm/copy_page.S b/arch/sh/mm/copy_page.S
index 397c94c9731..ae039f2da16 100644
--- a/arch/sh/mm/copy_page.S
+++ b/arch/sh/mm/copy_page.S
@@ -129,6 +129,7 @@ ENTRY(__copy_user_page)
rts
nop
#endif
+ .align 2
.Lpsz: .long PAGE_SIZE
/*
* __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n);
diff --git a/arch/sh/mm/fault.c b/arch/sh/mm/fault.c
index 9207da67ff8..c878faa4ae4 100644
--- a/arch/sh/mm/fault.c
+++ b/arch/sh/mm/fault.c
@@ -15,43 +15,11 @@
#include <linux/mm.h>
#include <linux/hardirq.h>
#include <linux/kprobes.h>
-#include <linux/kdebug.h>
#include <asm/system.h>
#include <asm/mmu_context.h>
#include <asm/tlbflush.h>
#include <asm/kgdb.h>
-#ifdef CONFIG_KPROBES
-ATOMIC_NOTIFIER_HEAD(notify_page_fault_chain);
-
-/* Hook to register for page fault notifications */
-int register_page_fault_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_register(&notify_page_fault_chain, nb);
-}
-
-int unregister_page_fault_notifier(struct notifier_block *nb)
-{
- return atomic_notifier_chain_unregister(&notify_page_fault_chain, nb);
-}
-
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
- int trap, int sig)
-{
- struct die_args args = {
- .regs = regs,
- .trapnr = trap,
- };
- return atomic_notifier_call_chain(&notify_page_fault_chain, val, &args);
-}
-#else
-static inline int notify_page_fault(enum die_val val, struct pt_regs *regs,
- int trap, int sig)
-{
- return NOTIFY_DONE;
-}
-#endif
-
/*
* This routine handles page faults. It determines the address,
* and the problem, and then passes it off to one of the appropriate
@@ -69,11 +37,6 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
siginfo_t info;
trace_hardirqs_on();
-
- if (notify_page_fault(DIE_PAGE_FAULT, regs,
- writeaccess, SIGSEGV) == NOTIFY_STOP)
- return;
-
local_irq_enable();
#ifdef CONFIG_SH_KGDB
@@ -285,7 +248,7 @@ asmlinkage int __kprobes __do_page_fault(struct pt_regs *regs,
pte_t *pte;
pte_t entry;
struct mm_struct *mm = current->mm;
- spinlock_t *ptl;
+ spinlock_t *ptl = NULL;
int ret = 1;
#ifdef CONFIG_SH_KGDB
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 8fe223a890e..e0e644ff320 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -12,6 +12,7 @@
#include <linux/init.h>
#include <linux/bootmem.h>
#include <linux/proc_fs.h>
+#include <linux/pagemap.h>
#include <linux/percpu.h>
#include <linux/io.h>
#include <asm/mmu_context.h>
@@ -112,7 +113,7 @@ static void set_pte_phys(unsigned long addr, unsigned long phys, pgprot_t prot)
* As a performance optimization, other platforms preserve the fixmap mapping
* across a context switch, we don't presently do this, but this could be done
* in a similar fashion as to the wired TLB interface that sh64 uses (by way
- * of the memorry mapped UTLB configuration) -- this unfortunately forces us to
+ * of the memory mapped UTLB configuration) -- this unfortunately forces us to
* give up a TLB entry for each mapping we want to preserve. While this may be
* viable for a small number of fixmaps, it's not particularly useful for
* everything and needs to be carefully evaluated. (ie, we may want this for
diff --git a/arch/sh/mm/pmb.c b/arch/sh/mm/pmb.c
index 02aae06527d..b6a5a338145 100644
--- a/arch/sh/mm/pmb.c
+++ b/arch/sh/mm/pmb.c
@@ -3,7 +3,7 @@
*
* Privileged Space Mapping Buffer (PMB) Support.
*
- * Copyright (C) 2005, 2006 Paul Mundt
+ * Copyright (C) 2005, 2006, 2007 Paul Mundt
*
* P1/P2 Section mapping definitions from map32.h, which was:
*
@@ -68,6 +68,32 @@ static inline unsigned long mk_pmb_data(unsigned int entry)
return mk_pmb_entry(entry) | PMB_DATA;
}
+static DEFINE_SPINLOCK(pmb_list_lock);
+static struct pmb_entry *pmb_list;
+
+static inline void pmb_list_add(struct pmb_entry *pmbe)
+{
+ struct pmb_entry **p, *tmp;
+
+ p = &pmb_list;
+ while ((tmp = *p) != NULL)
+ p = &tmp->next;
+
+ pmbe->next = tmp;
+ *p = pmbe;
+}
+
+static inline void pmb_list_del(struct pmb_entry *pmbe)
+{
+ struct pmb_entry **p, *tmp;
+
+ for (p = &pmb_list; (tmp = *p); p = &tmp->next)
+ if (tmp == pmbe) {
+ *p = tmp->next;
+ return;
+ }
+}
+
struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
unsigned long flags)
{
@@ -81,11 +107,19 @@ struct pmb_entry *pmb_alloc(unsigned long vpn, unsigned long ppn,
pmbe->ppn = ppn;
pmbe->flags = flags;
+ spin_lock_irq(&pmb_list_lock);
+ pmb_list_add(pmbe);
+ spin_unlock_irq(&pmb_list_lock);
+
return pmbe;
}
void pmb_free(struct pmb_entry *pmbe)
{
+ spin_lock_irq(&pmb_list_lock);
+ pmb_list_del(pmbe);
+ spin_unlock_irq(&pmb_list_lock);
+
kmem_cache_free(pmb_cache, pmbe);
}
@@ -167,31 +201,6 @@ void clear_pmb_entry(struct pmb_entry *pmbe)
clear_bit(entry, &pmb_map);
}
-static DEFINE_SPINLOCK(pmb_list_lock);
-static struct pmb_entry *pmb_list;
-
-static inline void pmb_list_add(struct pmb_entry *pmbe)
-{
- struct pmb_entry **p, *tmp;
-
- p = &pmb_list;
- while ((tmp = *p) != NULL)
- p = &tmp->next;
-
- pmbe->next = tmp;
- *p = pmbe;
-}
-
-static inline void pmb_list_del(struct pmb_entry *pmbe)
-{
- struct pmb_entry **p, *tmp;
-
- for (p = &pmb_list; (tmp = *p); p = &tmp->next)
- if (tmp == pmbe) {
- *p = tmp->next;
- return;
- }
-}
static struct {
unsigned long size;
@@ -283,25 +292,14 @@ void pmb_unmap(unsigned long addr)
} while (pmbe);
}
-static void pmb_cache_ctor(void *pmb, struct kmem_cache *cachep, unsigned long flags)
+static void pmb_cache_ctor(void *pmb, struct kmem_cache *cachep,
+ unsigned long flags)
{
struct pmb_entry *pmbe = pmb;
memset(pmb, 0, sizeof(struct pmb_entry));
- spin_lock_irq(&pmb_list_lock);
-
pmbe->entry = PMB_NO_ENTRY;
- pmb_list_add(pmbe);
-
- spin_unlock_irq(&pmb_list_lock);
-}
-
-static void pmb_cache_dtor(void *pmb, struct kmem_cache *cachep, unsigned long flags)
-{
- spin_lock_irq(&pmb_list_lock);
- pmb_list_del(pmb);
- spin_unlock_irq(&pmb_list_lock);
}
static int __init pmb_init(void)
@@ -312,8 +310,7 @@ static int __init pmb_init(void)
BUG_ON(unlikely(nr_entries >= NR_PMB_ENTRIES));
pmb_cache = kmem_cache_create("pmb", sizeof(struct pmb_entry), 0,
- SLAB_PANIC, pmb_cache_ctor,
- pmb_cache_dtor);
+ SLAB_PANIC, pmb_cache_ctor, NULL);
jump_to_P2();
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-26 12:04:55 +0000