fb0b0a73b2
kcov provides kernel coverage data that's useful for fuzzing tools like syzkaller. Wire up kcov support on powerpc. Disable kcov instrumentation on the same files where we currently disable gcov and UBSan instrumentation, plus some additional exclusions which appear necessary to boot on book3e machines. Signed-off-by: Andrew Donnellan <andrew.donnellan@au1.ibm.com> Acked-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Daniel Axtens <dja@axtens.net> # e6500 Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
30 lines
827 B
Makefile
30 lines
827 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the powerpc trace subsystem
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#
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ifdef CONFIG_FUNCTION_TRACER
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# do not trace tracer code
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CFLAGS_REMOVE_ftrace.o = $(CC_FLAGS_FTRACE)
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endif
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obj32-$(CONFIG_FUNCTION_TRACER) += ftrace_32.o
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obj64-$(CONFIG_FUNCTION_TRACER) += ftrace_64.o
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ifdef CONFIG_MPROFILE_KERNEL
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obj64-$(CONFIG_FUNCTION_TRACER) += ftrace_64_mprofile.o
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else
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obj64-$(CONFIG_FUNCTION_TRACER) += ftrace_64_pg.o
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endif
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obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
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obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
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obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
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obj-$(CONFIG_TRACING) += trace_clock.o
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obj-$(CONFIG_PPC64) += $(obj64-y)
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obj-$(CONFIG_PPC32) += $(obj32-y)
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# Disable GCOV, KCOV & sanitizers in odd or sensitive code
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GCOV_PROFILE_ftrace.o := n
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KCOV_INSTRUMENT_ftrace.o := n
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UBSAN_SANITIZE_ftrace.o := n
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