1 # SPDX-License-Identifier: GPL-2.0
3 # The compilers are complaining about unused variables inside an if(0) scope
4 # block. This is daft, shut them up.
5 ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
7 # These files are disabled because they produce non-interesting flaky coverage
8 # that is not a function of syscall inputs. E.g. involuntary context switches.
11 # Disable KCSAN to avoid excessive noise and performance degradation. To avoid
12 # false positives ensure barriers implied by sched functions are instrumented.
14 KCSAN_INSTRUMENT_BARRIERS := y
16 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
17 # According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
18 # needed for x86 only. Why this used to be enabled for all architectures is beyond
19 # me. I suspect most platforms don't need this, but until we know that for sure
20 # I turn this off for IA-64 only. Andreas Schwab says it's also needed on m68k
21 # to get a correct value for the wait-channel (WCHAN in ps). --davidm
22 CFLAGS_core.o := $(PROFILING) -fno-omit-frame-pointer
28 # These compilation units have roughly the same size and complexity - so their
29 # build parallelizes well and finishes roughly at once:
33 obj-y += build_policy.o
34 obj-y += build_utility.o