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37b47298ab
The compilers can't deal with obvious DCE vs that warning, resulting
in code like:
if (0) {
sched sched_statistics *stats;
stats = __schedstats_from_se(se);
...
}
triggering the warning. Kill the warning to make the robots stop
reporting this.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lkml.kernel.org/r/YWWPLnaZGybHsTkv@hirez.programming.kicks-ass.net
43 lines
1.8 KiB
Makefile
43 lines
1.8 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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ifdef CONFIG_FUNCTION_TRACER
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CFLAGS_REMOVE_clock.o = $(CC_FLAGS_FTRACE)
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endif
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# The compilers are complaining about unused variables inside an if(0) scope
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# block. This is daft, shut them up.
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ccflags-y += $(call cc-disable-warning, unused-but-set-variable)
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# These files are disabled because they produce non-interesting flaky coverage
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# that is not a function of syscall inputs. E.g. involuntary context switches.
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KCOV_INSTRUMENT := n
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# There are numerous data races here, however, most of them are due to plain accesses.
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# This would make it even harder for syzbot to find reproducers, because these
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# bugs trigger without specific input. Disable by default, but should re-enable
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# eventually.
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KCSAN_SANITIZE := n
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ifneq ($(CONFIG_SCHED_OMIT_FRAME_POINTER),y)
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# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
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# needed for x86 only. Why this used to be enabled for all architectures is beyond
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# me. I suspect most platforms don't need this, but until we know that for sure
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# I turn this off for IA-64 only. Andreas Schwab says it's also needed on m68k
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# to get a correct value for the wait-channel (WCHAN in ps). --davidm
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CFLAGS_core.o := $(PROFILING) -fno-omit-frame-pointer
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endif
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obj-y += core.o loadavg.o clock.o cputime.o
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obj-y += idle.o fair.o rt.o deadline.o
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obj-y += wait.o wait_bit.o swait.o completion.o
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obj-$(CONFIG_SMP) += cpupri.o cpudeadline.o topology.o stop_task.o pelt.o
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obj-$(CONFIG_SCHED_AUTOGROUP) += autogroup.o
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obj-$(CONFIG_SCHEDSTATS) += stats.o
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obj-$(CONFIG_SCHED_DEBUG) += debug.o
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obj-$(CONFIG_CGROUP_CPUACCT) += cpuacct.o
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obj-$(CONFIG_CPU_FREQ) += cpufreq.o
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obj-$(CONFIG_CPU_FREQ_GOV_SCHEDUTIL) += cpufreq_schedutil.o
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obj-$(CONFIG_MEMBARRIER) += membarrier.o
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obj-$(CONFIG_CPU_ISOLATION) += isolation.o
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obj-$(CONFIG_PSI) += psi.o
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obj-$(CONFIG_SCHED_CORE) += core_sched.o
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