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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/missing_ioprio.h | |
parent | Initial commit. (diff) | |
download | systemd-b750101eb236130cf056c675997decbac904cc49.tar.xz systemd-b750101eb236130cf056c675997decbac904cc49.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/missing_ioprio.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/basic/missing_ioprio.h b/src/basic/missing_ioprio.h new file mode 100644 index 0000000..9cbd172 --- /dev/null +++ b/src/basic/missing_ioprio.h @@ -0,0 +1,59 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include <sched.h> + +/* Match values uses by the kernel internally, as no public header seems to exist. */ + +#ifndef IOPRIO_N_CLASSES +# define IOPRIO_N_CLASSES 8 +#endif + +#ifndef IOPRIO_BE_NR +# define IOPRIO_BE_NR 8 +#endif + +#ifndef IOPRIO_CLASS_NONE +# define IOPRIO_CLASS_NONE 0 +#endif +#ifndef IOPRIO_CLASS_RT +# define IOPRIO_CLASS_RT 1 +#endif +#ifndef IOPRIO_CLASS_BE +# define IOPRIO_CLASS_BE 2 +#endif +#ifndef IOPRIO_CLASS_IDLE +# define IOPRIO_CLASS_IDLE 3 +#endif + +#ifndef IOPRIO_WHO_PROCESS +# define IOPRIO_WHO_PROCESS 1 +#endif +#ifndef IOPRIO_WHO_PGRP +# define IOPRIO_WHO_PGRP 2 +#endif +#ifndef IOPRIO_WHO_USER +# define IOPRIO_WHO_USER 3 +#endif + +#ifndef IOPRIO_BITS +# define IOPRIO_BITS 16 +#endif +#ifndef IOPRIO_N_CLASSES +# define IOPRIO_N_CLASSES 8 +#endif +#ifndef IOPRIO_CLASS_SHIFT +# define IOPRIO_CLASS_SHIFT 13 +#endif + +static inline int ioprio_prio_class(int value) { + return value >> IOPRIO_CLASS_SHIFT; +} + +static inline int ioprio_prio_data(int value) { + return value & ((1 << IOPRIO_CLASS_SHIFT) - 1); +} + +static inline int ioprio_prio_value(int class, int data) { + return (class << IOPRIO_CLASS_SHIFT) | data; +} |