diff options
| author | Oliver Hartkopp <socketcan@hartkopp.net> | 2021-07-14 22:56:55 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-08-02 22:37:27 +0300 |
| commit | 06447ae5e33bfbc5a777cc06d9854a31f3912833 (patch) | |
| tree | 2ee27a71278f67f46525a2468d02aab48d7488c8 /include/linux/ioprio.h | |
| parent | c500bee1c5b2f1d59b1081ac879d73268ab0ff17 (diff) | |
| download | linux-06447ae5e33bfbc5a777cc06d9854a31f3912833.tar.xz | |
ioprio: move user space relevant ioprio bits to UAPI includes
systemd added a modified copy of include/linux/ioprio.h into its
code to get the relevant content definitions for the exposed
ioprio_[get|set] system calls.
Move the user space relevant ioprio bits to the UAPI includes to be
able to use the ioprio_[get|set] syscalls as intended.
Cc: Kay Sievers <kay@vrfy.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Link: https://lore.kernel.org/r/20210714195655.181943-1-socketcan@hartkopp.net
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/ioprio.h')
| -rw-r--r-- | include/linux/ioprio.h | 41 |
1 files changed, 1 insertions, 40 deletions
diff --git a/include/linux/ioprio.h b/include/linux/ioprio.h index e9bfe6972aed..ef9ad4fb245f 100644 --- a/include/linux/ioprio.h +++ b/include/linux/ioprio.h @@ -6,46 +6,7 @@ #include <linux/sched/rt.h> #include <linux/iocontext.h> -/* - * Gives us 8 prio classes with 13-bits of data for each class - */ -#define IOPRIO_CLASS_SHIFT (13) -#define IOPRIO_PRIO_MASK ((1UL << IOPRIO_CLASS_SHIFT) - 1) - -#define IOPRIO_PRIO_CLASS(mask) ((mask) >> IOPRIO_CLASS_SHIFT) -#define IOPRIO_PRIO_DATA(mask) ((mask) & IOPRIO_PRIO_MASK) -#define IOPRIO_PRIO_VALUE(class, data) (((class) << IOPRIO_CLASS_SHIFT) | data) - -#define ioprio_valid(mask) (IOPRIO_PRIO_CLASS((mask)) != IOPRIO_CLASS_NONE) - -/* - * These are the io priority groups as implemented by CFQ. RT is the realtime - * class, it always gets premium service. BE is the best-effort scheduling - * class, the default for any process. IDLE is the idle scheduling class, it - * is only served when no one else is using the disk. - */ -enum { - IOPRIO_CLASS_NONE, - IOPRIO_CLASS_RT, - IOPRIO_CLASS_BE, - IOPRIO_CLASS_IDLE, -}; - -/* - * 8 best effort priority levels are supported - */ -#define IOPRIO_BE_NR (8) - -enum { - IOPRIO_WHO_PROCESS = 1, - IOPRIO_WHO_PGRP, - IOPRIO_WHO_USER, -}; - -/* - * Fallback BE priority - */ -#define IOPRIO_NORM (4) +#include <uapi/linux/ioprio.h> /* * if process has set io priority explicitly, use that. if not, convert |