1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 !! 2 ifdef CONFIG_FUNCTION_TRACER
3 # The compilers are complaining about unused v !! 3 CFLAGS_REMOVE_clock.o = $(CC_FLAGS_FTRACE)
4 # block. This is daft, shut them up. !! 4 endif
5 ccflags-y += $(call cc-disable-warning, unused <<
6 5
7 # These files are disabled because they produc 6 # These files are disabled because they produce non-interesting flaky coverage
8 # that is not a function of syscall inputs. E. 7 # that is not a function of syscall inputs. E.g. involuntary context switches.
9 KCOV_INSTRUMENT := n 8 KCOV_INSTRUMENT := n
10 9
11 # Disable KCSAN to avoid excessive noise and p !! 10 # There are numerous data races here, however, most of them are due to plain accesses.
12 # false positives ensure barriers implied by s !! 11 # This would make it even harder for syzbot to find reproducers, because these
>> 12 # bugs trigger without specific input. Disable by default, but should re-enable
>> 13 # eventually.
13 KCSAN_SANITIZE := n 14 KCSAN_SANITIZE := n
14 KCSAN_INSTRUMENT_BARRIERS := y <<
15 15
16 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y) 16 ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
17 # According to Alan Modra <alan@linuxcare.com.a 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 en 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 thi 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 Sch 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 21 # to get a correct value for the wait-channel (WCHAN in ps). --davidm
22 CFLAGS_core.o := $(PROFILING) -fno-omit-frame- 22 CFLAGS_core.o := $(PROFILING) -fno-omit-frame-pointer
23 endif 23 endif
24 24
25 # !! 25 obj-y += core.o loadavg.o clock.o cputime.o
26 # Build efficiency: !! 26 obj-y += idle.o fair.o rt.o deadline.o
27 # !! 27 obj-y += wait.o wait_bit.o swait.o completion.o
28 # These compilation units have roughly the sam !! 28
29 # build parallelizes well and finishes roughly !! 29 obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o topology.o stop_task.o pelt.o
30 # !! 30 obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
31 obj-y += core.o !! 31 obj-$(CONFIG_SCHEDSTATS) += stats.o
32 obj-y += fair.o !! 32 obj-$(CONFIG_SCHED_DEBUG) += debug.o
33 obj-y += build_policy.o !! 33 obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
34 obj-y += build_utility.o !! 34 obj-$(CONFIG_CPU_FREQ) += cpufreq.o
>> 35 obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o
>> 36 obj-$(CONFIG_MEMBARRIER) += membarrier.o
>> 37 obj-$(CONFIG_CPU_ISOLATION) += isolation.o
>> 38 obj-$(CONFIG_PSI) += psi.o
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