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path: root/include/linux/sched/prio.h
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2014-02-22sched/prio: Add 3 macros of MAX_NICE, MIN_NICE and NICE_WIDTH in prio.hDongsheng Yang
Currently there is lots of hard coding to 19 and -20, to represent maximum and minimum of nice values. This patch add three macros in prio.h for maximum, minimum and width of nice value, and uses it to remove hardcoded values in prio.h. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/3994e89327b2b15f992277cdf9f409c516f87d1b.1392103744.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> [ Collapsed two small patches. ] Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-22sched/prio: Use DEFAULT_PRIO to define NICE_TO_PRIO() and PRIO_TO_NICE()Dongsheng Yang
There is already a macro named DEFAULT_PRIO in prio.h, we can use it to define NICE_TO_PRIO and PRIO_TO_NICE rather than use hard coding of (MAX_RT_PRIO + 20). Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/4e28ec36fb49e8906027cbbdd900ab26a149905e.1392103744.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-09sched: Implement task_nice() as static inline functionDongsheng Yang
As patch "sched: Move the priority specific bits into a new header file" exposes the priority related macros in linux/sched/prio.h, we don't have to implement task_nice() in kernel/sched/core.c any more. This patch implements it in linux/sched/sched.h as static inline function, saving the kernel stack and enhancing performance a bit. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: clark.williams@gmail.com Cc: rostedt@goodmis.org Cc: raistlin@linux.it Cc: juri.lelli@gmail.com Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1390878045-7096-1-git-send-email-yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-09sched: Expose some macros related to priorityDongsheng Yang
Some macros in kernel/sched/sched.h about priority are private to kernel/sched. But they are useful to other parts of the core kernel. This patch moves these macros from kernel/sched/sched.h to include/linux/sched/prio.h so that they are available to other subsystems. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: raistlin@linux.it Cc: juri.lelli@gmail.com Cc: clark.williams@gmail.com Cc: rostedt@goodmis.org Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/2b022810905b52d13238466807f4b2a691577180.1390859827.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2014-02-09sched: Move the priority specific bits into a new header fileDongsheng Yang
Some bits about priority are defined in linux/sched/rt.h, but some of them are not only for rt scheduler, such as MAX_PRIO. This patch move them all into a new header file, linux/sched/prio.h. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: clark.williams@gmail.com Cc: rostedt@goodmis.org Cc: raistlin@linux.it Cc: juri.lelli@gmail.com Signed-off-by: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/f7549508a1588da2c613d601748ca9de30fa5dcf.1390859827.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>