diff options
author | Kay Sievers <kay@vrfy.org> | 2012-04-10 19:42:07 +0200 |
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committer | Kay Sievers <kay@vrfy.org> | 2012-04-10 19:47:00 +0200 |
commit | 771f19c06a9dbe19e4c3e532d901734f4b3b3a2b (patch) | |
tree | c10fdb14067492e408b3fbd5723c5ce9ee8015f0 /src/ioprio.h | |
parent | 9f36aa6846d795c39d453726b868dfb6e3c5b78d (diff) |
move list.h, macro.h, ioprio.h to shared/
Diffstat (limited to 'src/ioprio.h')
-rw-r--r-- | src/ioprio.h | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/src/ioprio.h b/src/ioprio.h deleted file mode 100644 index 9800fc2553..0000000000 --- a/src/ioprio.h +++ /dev/null @@ -1,57 +0,0 @@ -#ifndef IOPRIO_H -#define IOPRIO_H - -/* This is minimal version of Linux' linux/ioprio.h header file, which - * is licensed GPL2 */ - -#include <unistd.h> -#include <sys/syscall.h> - -/* - * Gives us 8 prio classes with 13-bits of data for each class - */ -#define IOPRIO_BITS (16) -#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, -}; - -static inline int ioprio_set(int which, int who, int ioprio) -{ - return syscall(__NR_ioprio_set, which, who, ioprio); -} - -static inline int ioprio_get(int which, int who) -{ - return syscall(__NR_ioprio_get, which, who); -} - -#endif |