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| author | Qian Cai <cai@lca.pw> | 2019-06-04 00:11:44 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-06-17 13:15:58 +0300 |
| commit | 509466b7d480bc5d22e90b9fbe6122ae0e2fbe39 (patch) | |
| tree | 847f7193a01338679740bfa3ec4df8876e27237e /Documentation/scheduler | |
| parent | b0c792244138d3ef099e7fce978675dc4acae570 (diff) | |
| download | linux-509466b7d480bc5d22e90b9fbe6122ae0e2fbe39.tar.xz | |
sched/fair: Fix "runnable_avg_yN_inv" not used warnings
runnable_avg_yN_inv[] is only used in kernel/sched/pelt.c but was
included in several other places because they need other macros all
came from kernel/sched/sched-pelt.h which was generated by
Documentation/scheduler/sched-pelt. As the result, it causes compilation
a lot of warnings,
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
kernel/sched/sched-pelt.h:4:18: warning: 'runnable_avg_yN_inv' defined but not used [-Wunused-const-variable=]
...
Silence it by appending the __maybe_unused attribute for it, so all
generated variables and macros can still be kept in the same file.
Signed-off-by: Qian Cai <cai@lca.pw>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/1559596304-31581-1-git-send-email-cai@lca.pw
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/scheduler')
| -rw-r--r-- | Documentation/scheduler/sched-pelt.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/scheduler/sched-pelt.c b/Documentation/scheduler/sched-pelt.c index e4219139386a..7238b355919c 100644 --- a/Documentation/scheduler/sched-pelt.c +++ b/Documentation/scheduler/sched-pelt.c @@ -20,7 +20,8 @@ void calc_runnable_avg_yN_inv(void) int i; unsigned int x; - printf("static const u32 runnable_avg_yN_inv[] = {"); + /* To silence -Wunused-but-set-variable warnings. */ + printf("static const u32 runnable_avg_yN_inv[] __maybe_unused = {"); for (i = 0; i < HALFLIFE; i++) { x = ((1UL<<32)-1)*pow(y, i); |