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| author | Jens Axboe <axboe@kernel.dk> | 2024-01-10 08:29:53 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-01-10 08:43:06 -0700 |
| commit | 742e324a0679ce271f7475a40056bac6917a950c (patch) | |
| tree | 918936abf759e183523cdb647ef0ba771dbefca3 /block | |
| parent | c8300953ba8e4c8e506ceea1b4e3c6acb4638a05 (diff) | |
| download | linux-stable-742e324a0679ce271f7475a40056bac6917a950c.tar.gz linux-stable-742e324a0679ce271f7475a40056bac6917a950c.tar.bz2 linux-stable-742e324a0679ce271f7475a40056bac6917a950c.zip | |
block/iocost: silence warning on 'last_period' potentially being unused
If CONFIG_TRACEPOINTS isn't enabled, we assign this variable but then
never use it. This can cause the compiler to complain about that:
block/blk-iocost.c:1264:6: warning: variable 'last_period' set but not used [-Wunused-but-set-variable]
1264 | u64 last_period, cur_period;
| ^
Rather than add ifdefs to guard this, just mark it __maybe_unused.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401102335.GiWdeIo9-lkp@intel.com/
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-iocost.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index 089fcb9cfce3..c8beec6d7df0 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -1261,7 +1261,7 @@ static void weight_updated(struct ioc_gq *iocg, struct ioc_now *now) static bool iocg_activate(struct ioc_gq *iocg, struct ioc_now *now) { struct ioc *ioc = iocg->ioc; - u64 last_period, cur_period; + u64 __maybe_unused last_period, cur_period; u64 vtime, vtarget; int i; |