diff options
Diffstat (limited to 'arch/arm/kernel/signal.c')
| -rw-r--r-- | arch/arm/kernel/signal.c | 41 |
1 files changed, 19 insertions, 22 deletions
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c index 0f17e06d51e6..39e7105a9b70 100644 --- a/arch/arm/kernel/signal.c +++ b/arch/arm/kernel/signal.c @@ -614,35 +614,32 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall) return 0; } -static struct page *signal_page; - struct page *get_signal_page(void) { - if (!signal_page) { - unsigned long ptr; - unsigned offset; - void *addr; + unsigned long ptr; + unsigned offset; + struct page *page; + void *addr; - signal_page = alloc_pages(GFP_KERNEL, 0); + page = alloc_pages(GFP_KERNEL, 0); - if (!signal_page) - return NULL; + if (!page) + return NULL; - addr = page_address(signal_page); + addr = page_address(page); - /* Give the signal return code some randomness */ - offset = 0x200 + (get_random_int() & 0x7fc); - signal_return_offset = offset; + /* Give the signal return code some randomness */ + offset = 0x200 + (get_random_int() & 0x7fc); + signal_return_offset = offset; - /* - * Copy signal return handlers into the vector page, and - * set sigreturn to be a pointer to these. - */ - memcpy(addr + offset, sigreturn_codes, sizeof(sigreturn_codes)); + /* + * Copy signal return handlers into the vector page, and + * set sigreturn to be a pointer to these. + */ + memcpy(addr + offset, sigreturn_codes, sizeof(sigreturn_codes)); - ptr = (unsigned long)addr + offset; - flush_icache_range(ptr, ptr + sizeof(sigreturn_codes)); - } + ptr = (unsigned long)addr + offset; + flush_icache_range(ptr, ptr + sizeof(sigreturn_codes)); - return signal_page; + return page; } |