tracing: Disable kcov on trace_preemptirq.c

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. Link: https://lkml.kernel.org/r/20220523063033.1778974-1-liu3101@purdue.edu

Congyu Liu committed 4 years ago

Commit bb5eb8f1 parent 154827f1 file · +4 −0Browse files

Showing the changes to kernel/trace (1 of 1 file). Show all

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kernel/trace/Makefile+4−0

@@ -31,6 +31,10 @@ ifdef CONFIG_GCOV_PROFILE_FTRACE · 30 unmodified lines
31	31	GCOV_PROFILE := y
32	32	endif
33	33
	34	+# Functions in this file could be invoked from early interrupt
	35	+# code and produce random code coverage.
	36	+KCOV_INSTRUMENT_trace_preemptirq.o := n
	37	+
34	38	CFLAGS_bpf_trace.o := -I$(src)
35	39
36	40	CFLAGS_trace_benchmark.o := -I$(src)