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authorDmitry Adamushko <dmitry.adamushko@gmail.com>2007-12-18 15:21:13 +0100
committerIngo Molnar <mingo@elte.hu>2007-12-18 15:21:13 +0100
commit051a1d1afa47206e23ae03f781c6795ce870e3d5 (patch)
tree6ce53c173a3a7582896504ecfc758e993455e5fb /lib/reciprocal_div.c
parentc63a1190368771b8207d86c4217ae4afdf1cbd5e (diff)
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sched: fix crash on ia64, introduce task_current()
Some services (e.g. sched_setscheduler(), rt_mutex_setprio() and sched_move_task()) must handle a given task differently in case it's the 'rq->curr' task on its run-queue. The task_running() interface is not suitable for determining such tasks for platforms with one of the following options: #define __ARCH_WANT_UNLOCKED_CTXSW #define __ARCH_WANT_INTERRUPTS_ON_CTXSW Due to the fact that it makes use of 'p->oncpu == 1' as a criterion but such a task is not necessarily 'rq->curr'. The detailed explanation is available here: https://lists.linux-foundation.org/pipermail/containers/2007-December/009262.html Signed-off-by: Dmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Tested-by: Dhaval Giani <dhaval@linux.vnet.ibm.com> Tested-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Diffstat (limited to 'lib/reciprocal_div.c')
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