On Wed, 05 Dec 2018 18:47:54 -0500 Steven Rostedt <rost...@goodmis.org> wrote:
> From: "Steven Rostedt (VMware)" <rost...@goodmis.org> > > Functions in the set_graph_notrace no longer subtract FTRACE_NOTRACE_DEPTH > from curr_ret_stack, as that is now implemented via the trace_recursion > flags. Access to curr_ret_stack no longer needs to worry about checking for > this. curr_ret_stack is still initialized to -1, when there's not a shadow > stack allocated. > > Cc: Catalin Marinas <catalin.mari...@arm.com> > Cc: Will Deacon <will.dea...@arm.com> I haven't pushed this to Linux next yet. I tested the entire tree as well as crossed compiled it against arm64. Can you give me an ack for this patch? Thanks! -- Steve > Cc: linux-arm-ker...@lists.infradead.org > Reviewed-by: Joel Fernandes (Google) <j...@joelfernandes.org> > Signed-off-by: Steven Rostedt (VMware) <rost...@goodmis.org> > --- > arch/arm64/kernel/stacktrace.c | 3 --- > 1 file changed, 3 deletions(-) > > diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c > index 4989f7ea1e59..7723dadf25be 100644 > --- a/arch/arm64/kernel/stacktrace.c > +++ b/arch/arm64/kernel/stacktrace.c > @@ -61,9 +61,6 @@ int notrace unwind_frame(struct task_struct *tsk, struct > stackframe *frame) > (frame->pc == (unsigned long)return_to_handler)) { > if (WARN_ON_ONCE(frame->graph == -1)) > return -EINVAL; > - if (frame->graph < -1) > - frame->graph += FTRACE_NOTRACE_DEPTH; > - > /* > * This is a case where function graph tracer has > * modified a return address (LR) in a stack frame