diff options
| author |   Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-11-18 18:41:46 -0500 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-08 20:53:38 -0500 |
| commit | 421d1069cd85f6fee9f36984a071a73b6a431f65 (patch) | |
| tree | 00b479f48f852dba658e491153c35bbff613ac54 /arch/arm64/kernel/stacktrace.c | |
| parent | fgraph: Have set_graph_notrace only affect function_graph tracer (diff) | |
| download | linux-dev-421d1069cd85f6fee9f36984a071a73b6a431f65.tar.xz linux-dev-421d1069cd85f6fee9f36984a071a73b6a431f65.zip | |
arm64: function_graph: Remove use of FTRACE_NOTRACE_DEPTH
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.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Acked-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to '')
| -rw-r--r-- | arch/arm64/kernel/stacktrace.c | 3 |
1 files changed, 0 insertions, 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 |