Messages in this thread | | | Date | Tue, 2 Apr 2013 10:57:09 +0200 | From | Anton Arapov <> | Subject | Re: [PATCH 1/4] uprobes/tracing: Kill the pointless task_pt_regs() calls |
| |
On Fri, Mar 29, 2013 at 07:15:40PM +0100, Oleg Nesterov wrote: > uprobe_trace_func() and uprobe_perf_func() do not need task_pt_regs(), > we already have "struct pt_regs *regs". > > Signed-off-by: Oleg Nesterov <oleg@redhat.com> > --- > kernel/trace/trace_uprobe.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c > index 8dad2a9..af5b773 100644 > --- a/kernel/trace/trace_uprobe.c > +++ b/kernel/trace/trace_uprobe.c > @@ -507,7 +507,7 @@ static int uprobe_trace_func(struct trace_uprobe *tu, struct pt_regs *regs) > return 0; > > entry = ring_buffer_event_data(event); > - entry->ip = instruction_pointer(task_pt_regs(current)); > + entry->ip = instruction_pointer(regs); > data = (u8 *)&entry[1]; > for (i = 0; i < tu->nr_args; i++) > call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset); > @@ -777,7 +777,7 @@ static int uprobe_perf_func(struct trace_uprobe *tu, struct pt_regs *regs) > if (!entry) > goto out; > > - entry->ip = instruction_pointer(task_pt_regs(current)); > + entry->ip = instruction_pointer(regs); > data = (u8 *)&entry[1]; > for (i = 0; i < tu->nr_args; i++) > call_fetch(&tu->args[i].fetch, regs, data + tu->args[i].offset); > -- > 1.5.5.1 > Acked-by: Anton Arapov <anton@redhat.com>
| |