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This is mostly a revert of 01dc52ebdf ("oom: remove deprecated oom_adj")
from Davidlohr Bueso.
It reintroduces /proc/pid/oom_adj for backwards compatibility with earlier
kernels. It simply scales the value linearly when /proc/pid/oom_score_adj
is written.
The major difference is that its scheduled removal is no longer included
in Documentation/feature-removal-schedule.txt. We do warn users with a
single printk, though, to suggest the more powerful and supported
/proc/pid/oom_score_adj interface.
Reported-by: Artem S. Tashkinov <t.artem@lycos.com>
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
21 lines
463 B
C
21 lines
463 B
C
#ifndef _UAPI__INCLUDE_LINUX_OOM_H
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#define _UAPI__INCLUDE_LINUX_OOM_H
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/*
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* /proc/<pid>/oom_score_adj set to OOM_SCORE_ADJ_MIN disables oom killing for
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* pid.
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*/
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#define OOM_SCORE_ADJ_MIN (-1000)
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#define OOM_SCORE_ADJ_MAX 1000
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/*
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* /proc/<pid>/oom_adj set to -17 protects from the oom killer for legacy
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* purposes.
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*/
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#define OOM_DISABLE (-17)
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/* inclusive */
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#define OOM_ADJUST_MIN (-16)
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#define OOM_ADJUST_MAX 15
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#endif /* _UAPI__INCLUDE_LINUX_OOM_H */
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