78f2c7db60
Introduce a new rlimit that allows the user to set a runtime timeout on real-time tasks their slice. Once this limit is exceeded the task will receive SIGXCPU. So it measures runtime since the last sleep. Input and ideas by Thomas Gleixner and Lennart Poettering. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> CC: Lennart Poettering <mzxreary@0pointer.de> CC: Michael Kerrisk <mtk.manpages@googlemail.com> CC: Ulrich Drepper <drepper@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
95 lines
2.8 KiB
C
95 lines
2.8 KiB
C
#ifndef _ASM_GENERIC_RESOURCE_H
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#define _ASM_GENERIC_RESOURCE_H
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/*
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* Resource limit IDs
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*
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* ( Compatibility detail: there are architectures that have
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* a different rlimit ID order in the 5-9 range and want
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* to keep that order for binary compatibility. The reasons
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* are historic and all new rlimits are identical across all
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* arches. If an arch has such special order for some rlimits
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* then it defines them prior including asm-generic/resource.h. )
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*/
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#define RLIMIT_CPU 0 /* CPU time in sec */
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#define RLIMIT_FSIZE 1 /* Maximum filesize */
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#define RLIMIT_DATA 2 /* max data size */
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#define RLIMIT_STACK 3 /* max stack size */
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#define RLIMIT_CORE 4 /* max core file size */
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#ifndef RLIMIT_RSS
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# define RLIMIT_RSS 5 /* max resident set size */
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#endif
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#ifndef RLIMIT_NPROC
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# define RLIMIT_NPROC 6 /* max number of processes */
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#endif
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#ifndef RLIMIT_NOFILE
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# define RLIMIT_NOFILE 7 /* max number of open files */
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#endif
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#ifndef RLIMIT_MEMLOCK
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# define RLIMIT_MEMLOCK 8 /* max locked-in-memory address space */
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#endif
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#ifndef RLIMIT_AS
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# define RLIMIT_AS 9 /* address space limit */
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#endif
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#define RLIMIT_LOCKS 10 /* maximum file locks held */
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#define RLIMIT_SIGPENDING 11 /* max number of pending signals */
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#define RLIMIT_MSGQUEUE 12 /* maximum bytes in POSIX mqueues */
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#define RLIMIT_NICE 13 /* max nice prio allowed to raise to
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0-39 for nice level 19 .. -20 */
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#define RLIMIT_RTPRIO 14 /* maximum realtime priority */
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#define RLIMIT_RTTIME 15 /* timeout for RT tasks in us */
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#define RLIM_NLIMITS 16
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/*
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* SuS says limits have to be unsigned.
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* Which makes a ton more sense anyway.
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*
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* Some architectures override this (for compatibility reasons):
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*/
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#ifndef RLIM_INFINITY
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# define RLIM_INFINITY (~0UL)
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#endif
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/*
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* RLIMIT_STACK default maximum - some architectures override it:
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*/
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#ifndef _STK_LIM_MAX
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# define _STK_LIM_MAX RLIM_INFINITY
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#endif
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#ifdef __KERNEL__
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/*
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* boot-time rlimit defaults for the init task:
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*/
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#define INIT_RLIMITS \
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{ \
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[RLIMIT_CPU] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_FSIZE] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_DATA] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_STACK] = { _STK_LIM, _STK_LIM_MAX }, \
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[RLIMIT_CORE] = { 0, RLIM_INFINITY }, \
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[RLIMIT_RSS] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_NPROC] = { 0, 0 }, \
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[RLIMIT_NOFILE] = { INR_OPEN, INR_OPEN }, \
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[RLIMIT_MEMLOCK] = { MLOCK_LIMIT, MLOCK_LIMIT }, \
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[RLIMIT_AS] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_LOCKS] = { RLIM_INFINITY, RLIM_INFINITY }, \
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[RLIMIT_SIGPENDING] = { 0, 0 }, \
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[RLIMIT_MSGQUEUE] = { MQ_BYTES_MAX, MQ_BYTES_MAX }, \
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[RLIMIT_NICE] = { 0, 0 }, \
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[RLIMIT_RTPRIO] = { 0, 0 }, \
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[RLIMIT_RTTIME] = { RLIM_INFINITY, RLIM_INFINITY }, \
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}
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#endif /* __KERNEL__ */
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#endif
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