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sched, sparc32: Update scheduler comments in copy_thread() 

There's no finish_arch_switch() anymore in the latest scheduler tree.
Also update some other details.

Cc: David S. Miller <davem@davemloft.net>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Ingo Molnar 2015-08-04 09:42:54 +02:00
parent 3c8e479355
commit bef033a3c6
1 changed files with 5 additions and 5 deletions
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10
arch/sparc/kernel/process_32.c
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@ -333,11 +333,11 @@ int copy_thread(unsigned long clone_flags, unsigned long sp,
childregs = (struct pt_regs *) (new_stack + STACKFRAME_SZ);
/*
* A new process must start with interrupts closed in 2.5,
* because this is how Mingo's scheduler works (see schedule_tail
* and finish_arch_switch). If we do not do it, a timer interrupt hits
* before we unlock, attempts to re-take the rq->lock, and then we die.
* Thus, kpsr|=PSR_PIL.
* A new process must start with interrupts disabled, see schedule_tail()
* and finish_task_switch(). (If we do not do it and if a timer interrupt
* hits before we unlock and attempts to take the rq->lock, we deadlock.)
*
* Thus, kpsr |= PSR_PIL.
*/
ti->ksp = (unsigned long) new_stack;
p->thread.kregs = childregs;