diff options
Diffstat (limited to 'kernel/sched/Makefile')
| -rw-r--r-- | kernel/sched/Makefile | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile new file mode 100644 index 0000000000..976092b7bd --- /dev/null +++ b/kernel/sched/Makefile @@ -0,0 +1,34 @@ +# SPDX-License-Identifier: GPL-2.0 + +# The compilers are complaining about unused variables inside an if(0) scope +# block. This is daft, shut them up. +ccflags-y += $(call cc-disable-warning, unused-but-set-variable) + +# These files are disabled because they produce non-interesting flaky coverage +# that is not a function of syscall inputs. E.g. involuntary context switches. +KCOV_INSTRUMENT := n + +# Disable KCSAN to avoid excessive noise and performance degradation. To avoid +# false positives ensure barriers implied by sched functions are instrumented. +KCSAN_SANITIZE := n +KCSAN_INSTRUMENT_BARRIERS := y + +ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y) +# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is +# needed for x86 only. Why this used to be enabled for all architectures is beyond +# me. I suspect most platforms don't need this, but until we know that for sure +# I turn this off for IA-64 only. Andreas Schwab says it's also needed on m68k +# to get a correct value for the wait-channel (WCHAN in ps). --davidm +CFLAGS_core.o := $(PROFILING) -fno-omit-frame-pointer +endif + +# +# Build efficiency: +# +# These compilation units have roughly the same size and complexity - so their +# build parallelizes well and finishes roughly at once: +# +obj-y += core.o +obj-y += fair.o +obj-y += build_policy.o +obj-y += build_utility.o |