diff options
Diffstat (limited to 'arch/arm/kernel')
| -rw-r--r-- | arch/arm/kernel/crash_dump.c | 27 | ||||
| -rw-r--r-- | arch/arm/kernel/ftrace.c | 6 |
2 files changed, 6 insertions, 27 deletions
diff --git a/arch/arm/kernel/crash_dump.c b/arch/arm/kernel/crash_dump.c index 53cb92435392..938bd932df9a 100644 --- a/arch/arm/kernel/crash_dump.c +++ b/arch/arm/kernel/crash_dump.c @@ -14,22 +14,10 @@ #include <linux/crash_dump.h> #include <linux/uaccess.h> #include <linux/io.h> +#include <linux/uio.h> -/** - * copy_oldmem_page() - copy one page from old kernel memory - * @pfn: page frame number to be copied - * @buf: buffer where the copied page is placed - * @csize: number of bytes to copy - * @offset: offset in bytes into the page - * @userbuf: if set, @buf is int he user address space - * - * This function copies one page from old kernel memory into buffer pointed by - * @buf. If @buf is in userspace, set @userbuf to %1. Returns number of bytes - * copied or negative error in case of failure. - */ -ssize_t copy_oldmem_page(unsigned long pfn, char *buf, - size_t csize, unsigned long offset, - int userbuf) +ssize_t copy_oldmem_page(struct iov_iter *iter, unsigned long pfn, + size_t csize, unsigned long offset) { void *vaddr; @@ -40,14 +28,7 @@ ssize_t copy_oldmem_page(unsigned long pfn, char *buf, if (!vaddr) return -ENOMEM; - if (userbuf) { - if (copy_to_user(buf, vaddr + offset, csize)) { - iounmap(vaddr); - return -EFAULT; - } - } else { - memcpy(buf, vaddr + offset, csize); - } + csize = copy_to_iter(vaddr + offset, csize, iter); iounmap(vaddr); return csize; diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c index 83cc068586bc..a0b6d1e3812f 100644 --- a/arch/arm/kernel/ftrace.c +++ b/arch/arm/kernel/ftrace.c @@ -79,16 +79,14 @@ static unsigned long __ref adjust_address(struct dyn_ftrace *rec, return (unsigned long)&ftrace_regs_caller_from_init; } -int ftrace_arch_code_modify_prepare(void) +void ftrace_arch_code_modify_prepare(void) { - return 0; } -int ftrace_arch_code_modify_post_process(void) +void ftrace_arch_code_modify_post_process(void) { /* Make sure any TLB misses during machine stop are cleared. */ flush_tlb_all(); - return 0; } static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr, |