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authorIngo Molnar <mingo@kernel.org>2015-08-04 07:42:54 (GMT)
committerIngo Molnar <mingo@kernel.org>2015-08-04 07:48:12 (GMT)
commitbef033a3c68a0cd31c81973946be768e9dd7ba42 (patch)
treef716e094e5ec99ee369a96734e61ce2f72c1fb6d /arch/sparc/kernel
parent3c8e4793556981a7f532599959aa3303968056f0 (diff)
downloadlinux-bef033a3c68a0cd31c81973946be768e9dd7ba42.tar.xz
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>
Diffstat (limited to 'arch/sparc/kernel')
-rw-r--r--arch/sparc/kernel/process_32.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c
index 50e7b62..c5113c7 100644
--- a/arch/sparc/kernel/process_32.c
+++ b/arch/sparc/kernel/process_32.c
@@ -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;