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Date:   Tue, 12 Oct 2021 15:35:42 +0200
From:   Peter Zijlstra <>
To:     kernel test robot <>
Cc:     Yafang Shao <>,,,,
Subject: Re: [tip:sched/core 14/47] kernel/sched/fair.c:893:22: error:
 variable 'p' set but not used

On Tue, Oct 12, 2021 at 01:26:54PM +0200, Peter Zijlstra wrote:

> Again, I have absolutely no intention of fixing this. IMO this is the
> compiler being a total pain in the arse.
> Please stop reporting this.

How's this then?

diff --git a/kernel/sched/Makefile b/kernel/sched/Makefile
index 978fcfca5871..b0d9121c5dce 100644
--- a/kernel/sched/Makefile
+++ b/kernel/sched/Makefile
@@ -3,6 +3,10 @@ ifdef CONFIG_FUNCTION_TRACER
+# The compilers are complaining about unused variables inside an if(0) scope
+# block. This is daft, shut them up.
+ccflags-y += -Wno-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.

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