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| author | Jiri Slaby (SUSE) <jirislaby@kernel.org> | 2022-12-13 13:08:26 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-12-14 09:56:10 -0700 |
| commit | ff1cc97b1f4c10db224f276d9615b22835b8c424 (patch) | |
| tree | 9d3349ac8fddf2654d60bc6f829e6da1a399c925 /block | |
| parent | 337366e02b370d2800110fbc99940f6ddddcbdfa (diff) | |
| download | lwn-ff1cc97b1f4c10db224f276d9615b22835b8c424.tar.gz lwn-ff1cc97b1f4c10db224f276d9615b22835b8c424.zip | |
block/blk-iocost (gcc13): keep large values in a new enum
Since gcc13, each member of an enum has the same type as the enum [1]. And
that is inherited from its members. Provided:
VTIME_PER_SEC_SHIFT = 37,
VTIME_PER_SEC = 1LLU << VTIME_PER_SEC_SHIFT,
...
AUTOP_CYCLE_NSEC = 10LLU * NSEC_PER_SEC,
the named type is unsigned long.
This generates warnings with gcc-13:
block/blk-iocost.c: In function 'ioc_weight_prfill':
block/blk-iocost.c:3037:37: error: format '%u' expects argument of type 'unsigned int', but argument 4 has type 'long unsigned int'
block/blk-iocost.c: In function 'ioc_weight_show':
block/blk-iocost.c:3047:34: error: format '%u' expects argument of type 'unsigned int', but argument 3 has type 'long unsigned int'
So split the anonymous enum with large values to a separate enum, so
that they don't affect other members.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36113
Cc: Martin Liska <mliska@suse.cz>
Cc: Tejun Heo <tj@kernel.org>
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: cgroups@vger.kernel.org
Cc: linux-block@vger.kernel.org
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Link: https://lore.kernel.org/r/20221213120826.17446-1-jirislaby@kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block')
| -rw-r--r-- | block/blk-iocost.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-iocost.c b/block/blk-iocost.c index d1bdc12deaa7..549ddc9e0c6f 100644 --- a/block/blk-iocost.c +++ b/block/blk-iocost.c @@ -232,7 +232,9 @@ enum { /* 1/64k is granular enough and can easily be handled w/ u32 */ WEIGHT_ONE = 1 << 16, +}; +enum { /* * As vtime is used to calculate the cost of each IO, it needs to * be fairly high precision. For example, it should be able to |