diff options
Diffstat (limited to 'arch/tile')
| -rw-r--r-- | arch/tile/include/asm/topology.h | 2 | ||||
| -rw-r--r-- | arch/tile/include/asm/uaccess.h | 18 | ||||
| -rw-r--r-- | arch/tile/mm/fault.c | 4 | ||||
| -rw-r--r-- | arch/tile/mm/highmem.c | 3 |
4 files changed, 17 insertions, 10 deletions
diff --git a/arch/tile/include/asm/topology.h b/arch/tile/include/asm/topology.h index 9383118..76b0d0e 100644 --- a/arch/tile/include/asm/topology.h +++ b/arch/tile/include/asm/topology.h @@ -55,7 +55,7 @@ static inline const struct cpumask *cpumask_of_node(int node) #define topology_physical_package_id(cpu) ((void)(cpu), 0) #define topology_core_id(cpu) (cpu) #define topology_core_cpumask(cpu) ((void)(cpu), cpu_online_mask) -#define topology_thread_cpumask(cpu) cpumask_of(cpu) +#define topology_sibling_cpumask(cpu) cpumask_of(cpu) #endif #endif /* _ASM_TILE_TOPOLOGY_H */ diff --git a/arch/tile/include/asm/uaccess.h b/arch/tile/include/asm/uaccess.h index f41cb53..a33276b 100644 --- a/arch/tile/include/asm/uaccess.h +++ b/arch/tile/include/asm/uaccess.h @@ -78,7 +78,8 @@ int __range_ok(unsigned long addr, unsigned long size); * @addr: User space pointer to start of block to check * @size: Size of block to check * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * Checks if a pointer to a block of memory in user space is valid. * @@ -192,7 +193,8 @@ extern int __get_user_bad(void) * @x: Variable to store result. * @ptr: Source address, in user space. * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * This macro copies a single simple variable from user space to kernel * space. It supports simple types like char and int, but not larger @@ -274,7 +276,8 @@ extern int __put_user_bad(void) * @x: Value to copy to user space. * @ptr: Destination address, in user space. * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * This macro copies a single simple value from kernel space to user * space. It supports simple types like char and int, but not larger @@ -330,7 +333,8 @@ extern int __put_user_bad(void) * @from: Source address, in kernel space. * @n: Number of bytes to copy. * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * Copy data from kernel space to user space. Caller must check * the specified block with access_ok() before calling this function. @@ -366,7 +370,8 @@ copy_to_user(void __user *to, const void *from, unsigned long n) * @from: Source address, in user space. * @n: Number of bytes to copy. * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * Copy data from user space to kernel space. Caller must check * the specified block with access_ok() before calling this function. @@ -437,7 +442,8 @@ static inline unsigned long __must_check copy_from_user(void *to, * @from: Source address, in user space. * @n: Number of bytes to copy. * - * Context: User context only. This function may sleep. + * Context: User context only. This function may sleep if pagefaults are + * enabled. * * Copy data from user space to user space. Caller must check * the specified blocks with access_ok() before calling this function. diff --git a/arch/tile/mm/fault.c b/arch/tile/mm/fault.c index e83cc99..3f4f58d 100644 --- a/arch/tile/mm/fault.c +++ b/arch/tile/mm/fault.c @@ -354,9 +354,9 @@ static int handle_page_fault(struct pt_regs *regs, /* * If we're in an interrupt, have no user context or are running in an - * atomic region then we must not take the fault. + * region with pagefaults disabled then we must not take the fault. */ - if (in_atomic() || !mm) { + if (pagefault_disabled() || !mm) { vma = NULL; /* happy compiler */ goto bad_area_nosemaphore; } diff --git a/arch/tile/mm/highmem.c b/arch/tile/mm/highmem.c index 6aa2f26..fcd5450 100644 --- a/arch/tile/mm/highmem.c +++ b/arch/tile/mm/highmem.c @@ -201,7 +201,7 @@ void *kmap_atomic_prot(struct page *page, pgprot_t prot) int idx, type; pte_t *pte; - /* even !CONFIG_PREEMPT needs this, for in_atomic in do_page_fault */ + preempt_disable(); pagefault_disable(); /* Avoid icache flushes by disallowing atomic executable mappings. */ @@ -259,6 +259,7 @@ void __kunmap_atomic(void *kvaddr) } pagefault_enable(); + preempt_enable(); } EXPORT_SYMBOL(__kunmap_atomic); |