Messages in this thread | | | From | Dmitry Vyukov <> | Date | Mon, 23 May 2022 10:35:57 +0200 | Subject | Re: [PATCH] tracing: disable kcov on trace_preemptirq.c |
| |
On Mon, 23 May 2022 at 08:30, Congyu Liu <liu3101@purdue.edu> wrote: > > Functions in trace_preemptirq.c could be invoked from early interrupt > code that bypasses kcov trace function's in_task() check. Disable kcov > on this file to reduce random code coverage. > > Signed-off-by: Congyu Liu <liu3101@purdue.edu>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
> --- > kernel/trace/Makefile | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile > index d77cd8032213..0d261774d6f3 100644 > --- a/kernel/trace/Makefile > +++ b/kernel/trace/Makefile > @@ -31,6 +31,10 @@ ifdef CONFIG_GCOV_PROFILE_FTRACE > GCOV_PROFILE := y > endif > > +# Functions in this file could be invoked from early interrupt > +# code and produce random code coverage. > +KCOV_INSTRUMENT_trace_preemptirq.o := n > + > CFLAGS_bpf_trace.o := -I$(src) > > CFLAGS_trace_benchmark.o := -I$(src) > -- > 2.34.1 >
| |