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| author | Aurelien Jarno | 2009-04-22 09:18:28 +0200 |
|---|---|---|
| committer | Karel Zak | 2009-05-07 11:28:08 +0200 |
| commit | b64279dab84373f060d589bdd519dbfa255adc58 (patch) | |
| tree | e7db453544e78c702683d5195484f4ff26938283 /schedutils/chrt.1 | |
| parent | cal: Highlight today even when month or year specified (diff) | |
| download | kernel-qcow2-util-linux-b64279dab84373f060d589bdd519dbfa255adc58.tar.gz kernel-qcow2-util-linux-b64279dab84373f060d589bdd519dbfa255adc58.tar.xz kernel-qcow2-util-linux-b64279dab84373f060d589bdd519dbfa255adc58.zip | |
chrt: don't assume SCHED_BATCH and SCHED_IDLE exist
SCHED_FIFO, SCHED_OTHER, SCHED_RR are part of POSIX 1003.1b Process
Scheduling, so it is correct to assume they always exists.
SCHED_BATCH and SCHED_IDLE are Linux specific, we should not assume
they exists.
Defining SCHED_BATCH and SCHED_IDLE to random values (ie the ones found
on Linux systems) is not an option as they may *collide* with the one of
other systems. For example on GNU/kFreeBSD we have:
#define SCHED_RR 3
and on Linux we have:
#define SCHED_BATCH 3
[kzak@redhat.com: - add "Linux specific" notes to chrt.1
- add a note about BATCH and PR conflict to
this commit message]
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: Karel Zak <kzak@redhat.com>
Diffstat (limited to 'schedutils/chrt.1')
| -rw-r--r-- | schedutils/chrt.1 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/schedutils/chrt.1 b/schedutils/chrt.1 index 83b3dbb0c..06c58b479 100644 --- a/schedutils/chrt.1 +++ b/schedutils/chrt.1 @@ -63,6 +63,7 @@ operate on an existing PID and do not launch a new task .B -b, --batch set scheduling policy to .BR SCHED_BATCH +(Linux specific) .TP .B -f, --fifo set scheduling policy to @@ -71,6 +72,7 @@ set scheduling policy to .B -i, --idle set schedulng policy to .BR SCHED_IDLE +(Linux specific) .TP .B -m, --max show minimum and maximum valid priorities, then exit |