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authorJens Axboe <axboe@kernel.dk>2024-01-10 08:29:53 -0700
committerJens Axboe <axboe@kernel.dk>2024-01-10 08:43:06 -0700
commit742e324a0679ce271f7475a40056bac6917a950c (patch)
tree918936abf759e183523cdb647ef0ba771dbefca3 /block/blk-iocost.c
parentc8300953ba8e4c8e506ceea1b4e3c6acb4638a05 (diff)
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/blk-iocost.c')
-rw-r--r--block/blk-iocost.c2
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;