From: Ingo Molnar Date: Tue, 4 Aug 2015 07:42:54 +0000 (+0200) Subject: sched, sparc32: Update scheduler comments in copy_thread() X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bef033a3c68a0cd31c81973946be768e9dd7ba42;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git 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 Cc: Peter Zijlstra Cc: Mike Galbraith Cc: Linus Torvalds Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Cc: sparclinux@vger.kernel.org Signed-off-by: Ingo Molnar --- diff --git a/arch/sparc/kernel/process_32.c b/arch/sparc/kernel/process_32.c index 50e7b626afe8..c5113c7ce2fd 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;