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author | 2010-09-29 10:46:46 -0400 | |
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committer | 2010-10-01 16:07:09 +0200 | |
commit | 40c6b3cb64cd1d02322df5f729cca25084580f40 (patch) | |
tree | dc34b9d321810f1a6931a453005afdfbea37f0e8 /arch/x86/oprofile | |
parent | Merge branch 'oprofile/urgent' into oprofile/core (diff) | |
download | linux-40c6b3cb64cd1d02322df5f729cca25084580f40.tar.gz linux-40c6b3cb64cd1d02322df5f729cca25084580f40.tar.bz2 linux-40c6b3cb64cd1d02322df5f729cca25084580f40.zip |
oprofile, x86: Using struct stack_frame for 64bit processes dump
Removing unnecessary struct frame_head and replacing it with
struct stack_frame.
The struct stack_frame is already defined and used in other places
in kernel, so there's no reason to define new structure.
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile')
-rw-r--r-- | arch/x86/oprofile/backtrace.c | 19 |
1 files changed, 7 insertions, 12 deletions
diff --git a/arch/x86/oprofile/backtrace.c b/arch/x86/oprofile/backtrace.c index 3855096c59b8..d640a86198b1 100644 --- a/arch/x86/oprofile/backtrace.c +++ b/arch/x86/oprofile/backtrace.c @@ -48,35 +48,30 @@ static struct stacktrace_ops backtrace_ops = { .walk_stack = print_context_stack, }; -struct frame_head { - struct frame_head *bp; - unsigned long ret; -} __attribute__((packed)); - -static struct frame_head *dump_user_backtrace(struct frame_head *head) +static struct stack_frame *dump_user_backtrace(struct stack_frame *head) { - struct frame_head bufhead[2]; + struct stack_frame bufhead[2]; - /* Also check accessibility of one struct frame_head beyond */ + /* Also check accessibility of one struct stack_frame beyond */ if (!access_ok(VERIFY_READ, head, sizeof(bufhead))) return NULL; if (__copy_from_user_inatomic(bufhead, head, sizeof(bufhead))) return NULL; - oprofile_add_trace(bufhead[0].ret); + oprofile_add_trace(bufhead[0].return_address); /* frame pointers should strictly progress back up the stack * (towards higher addresses) */ - if (head >= bufhead[0].bp) + if (head >= bufhead[0].next_frame) return NULL; - return bufhead[0].bp; + return bufhead[0].next_frame; } void x86_backtrace(struct pt_regs * const regs, unsigned int depth) { - struct frame_head *head = (struct frame_head *)frame_pointer(regs); + struct stack_frame *head = (struct stack_frame *)frame_pointer(regs); if (!user_mode_vm(regs)) { unsigned long stack = kernel_stack_pointer(regs); |