Signed-off-by: Aneesh Kumar K.V <aneesh.ku...@linux.vnet.ibm.com>
---
arch/powerpc/include/asm/mmu_context.h | 63 +++++++++++++++++++++++-----------
arch/powerpc/kernel/swsusp.c | 2 +-
arch/powerpc/mm/mmu_context_hash64.c | 16 ++++-----
arch/powerpc/mm/mmu_context_nohash.c | 3 +-
drivers/cpufreq/pmac32-cpufreq.c | 2 +-
drivers/macintosh/via-pmu.c | 4 +--
6 files changed, 57 insertions(+), 33 deletions(-)
diff --git a/arch/powerpc/include/asm/mmu_context.h
b/arch/powerpc/include/asm/mmu_context.h
index 878c27771717..5124b721da6e 100644
--- a/arch/powerpc/include/asm/mmu_context.h
+++ b/arch/powerpc/include/asm/mmu_context.h
@@ -10,11 +10,6 @@
#include <asm/cputable.h>
#include <asm/cputhreads.h>
-/*
- * Most if the context management is out of line
- */
-extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
-extern void destroy_context(struct mm_struct *mm);
#ifdef CONFIG_SPAPR_TCE_IOMMU
struct mm_iommu_table_group_mem_t;
@@ -33,16 +28,50 @@ extern long mm_iommu_ua_to_hpa(struct
mm_iommu_table_group_mem_t *mem,
extern long mm_iommu_mapped_inc(struct mm_iommu_table_group_mem_t *mem);
extern void mm_iommu_mapped_dec(struct mm_iommu_table_group_mem_t *mem);
#endif
+/*
+ * Most of the context management is out of line
+ */
+#ifdef CONFIG_PPC_BOOK3S_64
+extern int hlinit_new_context(struct task_struct *tsk, struct mm_struct *mm);
+static inline int init_new_context(struct task_struct *tsk, struct mm_struct
*mm)
+{
+ return hlinit_new_context(tsk, mm);
+}
+
+extern void hldestroy_context(struct mm_struct *mm);
+static inline void destroy_context(struct mm_struct *mm)
+{
+ return hldestroy_context(mm);
+}
-extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next);
extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
-extern void set_context(unsigned long id, pgd_t *pgd);
+static inline void switch_mmu_context(struct mm_struct *prev,
+ struct mm_struct *next,
+ struct task_struct *tsk)
+{
+ return switch_slb(tsk, next);
+}
-#ifdef CONFIG_PPC_BOOK3S_64
-extern int __init_new_context(void);
-extern void __destroy_context(int context_id);
+extern void set_context(unsigned long id, pgd_t *pgd);
+extern int __hlinit_new_context(void);
+static inline int __init_new_context(void)
+{
+ return __hlinit_new_context();
+}
+extern void __hldestroy_context(int context_id);
+static inline void __destroy_context(int context_id)
+{
+ return __hldestroy_context(context_id);
+}
static inline void mmu_context_init(void) { }
#else
+extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm);
+extern void destroy_context(struct mm_struct *mm);
+
+extern void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk);
+extern void switch_slb(struct task_struct *tsk, struct mm_struct *mm);
+extern void set_context(unsigned long id, pgd_t *pgd);
extern unsigned long __init_new_context(void);
extern void __destroy_context(unsigned long context_id);
extern void mmu_context_init(void);
@@ -88,17 +117,11 @@ static inline void switch_mm(struct mm_struct *prev,
struct mm_struct *next,
if (cpu_has_feature(CPU_FTR_ALTIVEC))
asm volatile ("dssall");
#endif /* CONFIG_ALTIVEC */
-
- /* The actual HW switching method differs between the various
- * sub architectures.
+ /*
+ * The actual HW switching method differs between the various
+ * sub architectures. Out of line for now
*/
-#ifdef CONFIG_PPC_STD_MMU_64
- switch_slb(tsk, next);
-#else
- /* Out of line for now */
- switch_mmu_context(prev, next);
-#endif
-
+ switch_mmu_context(prev, next, tsk);
}
#define deactivate_mm(tsk,mm) do { } while (0)
diff --git a/arch/powerpc/kernel/swsusp.c b/arch/powerpc/kernel/swsusp.c
index 6669b1752512..6ae9bd5086a4 100644
--- a/arch/powerpc/kernel/swsusp.c
+++ b/arch/powerpc/kernel/swsusp.c
@@ -31,6 +31,6 @@ void save_processor_state(void)
void restore_processor_state(void)
{
#ifdef CONFIG_PPC32
- switch_mmu_context(current->active_mm, current->active_mm);
+ switch_mmu_context(current->active_mm, current->active_mm, NULL);
#endif
}
diff --git a/arch/powerpc/mm/mmu_context_hash64.c
b/arch/powerpc/mm/mmu_context_hash64.c
index ff9baa5d2944..9c147d800760 100644
--- a/arch/powerpc/mm/mmu_context_hash64.c
+++ b/arch/powerpc/mm/mmu_context_hash64.c
@@ -30,7 +30,7 @@
static DEFINE_SPINLOCK(mmu_context_lock);
static DEFINE_IDA(mmu_context_ida);
-int __init_new_context(void)
+int __hlinit_new_context(void)
{
int index;
int err;
@@ -59,11 +59,11 @@ again:
}
EXPORT_SYMBOL_GPL(__init_new_context);
-int init_new_context(struct task_struct *tsk, struct mm_struct *mm)
+int hlinit_new_context(struct task_struct *tsk, struct mm_struct *mm)
{
int index;
- index = __init_new_context();
+ index = __hlinit_new_context();
if (index < 0)
return index;
@@ -78,7 +78,7 @@ int init_new_context(struct task_struct *tsk, struct
mm_struct *mm)
#ifdef CONFIG_PPC_ICSWX
mm->context.cop_lockp = kmalloc(sizeof(spinlock_t), GFP_KERNEL);
if (!mm->context.cop_lockp) {
- __destroy_context(index);
+ __hldestroy_context(index);
subpage_prot_free(mm);
mm->context.id = MMU_NO_CONTEXT;
return -ENOMEM;
@@ -95,13 +95,13 @@ int init_new_context(struct task_struct *tsk, struct
mm_struct *mm)
return 0;
}
-void __destroy_context(int context_id)
+void __hldestroy_context(int context_id)
{
spin_lock(&mmu_context_lock);
ida_remove(&mmu_context_ida, context_id);
spin_unlock(&mmu_context_lock);
}
-EXPORT_SYMBOL_GPL(__destroy_context);
+EXPORT_SYMBOL_GPL(__hldestroy_context);
#ifdef CONFIG_PPC_64K_PAGES
static void destroy_pagetable_page(struct mm_struct *mm)
@@ -133,7 +133,7 @@ static inline void destroy_pagetable_page(struct mm_struct
*mm)
#endif
-void destroy_context(struct mm_struct *mm)
+void hldestroy_context(struct mm_struct *mm)
{
#ifdef CONFIG_SPAPR_TCE_IOMMU
mm_iommu_cleanup(&mm->context);
@@ -146,7 +146,7 @@ void destroy_context(struct mm_struct *mm)
#endif /* CONFIG_PPC_ICSWX */
destroy_pagetable_page(mm);
- __destroy_context(mm->context.id);
+ __hldestroy_context(mm->context.id);
subpage_prot_free(mm);
mm->context.id = MMU_NO_CONTEXT;
}
diff --git a/arch/powerpc/mm/mmu_context_nohash.c
b/arch/powerpc/mm/mmu_context_nohash.c
index 986afbc22c76..a36c43a27893 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -226,7 +226,8 @@ static void context_check_map(void)
static void context_check_map(void) { }
#endif
-void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next)
+void switch_mmu_context(struct mm_struct *prev, struct mm_struct *next,
+ struct task_struct *tsk)
{
unsigned int i, id, cpu = smp_processor_id();
unsigned long *map;
diff --git a/drivers/cpufreq/pmac32-cpufreq.c b/drivers/cpufreq/pmac32-cpufreq.c
index 1f49d97a70ea..bde503c66945 100644
--- a/drivers/cpufreq/pmac32-cpufreq.c
+++ b/drivers/cpufreq/pmac32-cpufreq.c
@@ -298,7 +298,7 @@ static int pmu_set_cpu_speed(int low_speed)
_set_L3CR(save_l3cr);
/* Restore userland MMU context */
- switch_mmu_context(NULL, current->active_mm);
+ switch_mmu_context(NULL, current->active_mm, NULL);
#ifdef DEBUG_FREQ
printk(KERN_DEBUG "HID1, after: %x\n", mfspr(SPRN_HID1));
diff --git a/drivers/macintosh/via-pmu.c b/drivers/macintosh/via-pmu.c
index 01ee736fe0ef..f8b6d1403c16 100644
--- a/drivers/macintosh/via-pmu.c
+++ b/drivers/macintosh/via-pmu.c
@@ -1851,7 +1851,7 @@ static int powerbook_sleep_grackle(void)
_set_L2CR(save_l2cr);
/* Restore userland MMU context */
- switch_mmu_context(NULL, current->active_mm);
+ switch_mmu_context(NULL, current->active_mm, NULL);
/* Power things up */
pmu_unlock();
@@ -1940,7 +1940,7 @@ powerbook_sleep_Core99(void)
_set_L3CR(save_l3cr);
/* Restore userland MMU context */
- switch_mmu_context(NULL, current->active_mm);
+ switch_mmu_context(NULL, current->active_mm, NULL);
/* Tell PMU we are ready */
pmu_unlock();
--
2.5.0
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