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s390: move cputime accounting fields from thread_info to thread_struct

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The user_timer and system_timer fields are used for the per-thread
cputime accounting code. The access to these values is simpler if
they are moved to the thread_struct as the task_thread_info(tsk)
indirection is not needed anymore.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2016-11-08 12:15:59 +01:00
parent f8fc82b471
commit 90c53e6580
6 changed files with 16 additions and 27 deletions
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5
arch/s390/kernel/smp.c
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@@ -259,15 +259,14 @@ static void pcpu_prepare_secondary(struct pcpu *pcpu, int cpu)
static void pcpu_attach_task(struct pcpu *pcpu, struct task_struct *tsk)
{
struct lowcore *lc = pcpu->lowcore;
struct thread_info *ti = task_thread_info(tsk);
lc->kernel_stack = (unsigned long) task_stack_page(tsk)
+ THREAD_SIZE - STACK_FRAME_OVERHEAD - sizeof(struct pt_regs);
lc->current_task = (unsigned long) tsk;
lc->lpp = LPP_MAGIC;
lc->current_pid = tsk->pid;
lc->user_timer = ti->user_timer;
lc->system_timer = ti->system_timer;
lc->user_timer = tsk->thread.user_timer;
lc->system_timer = tsk->thread.system_timer;
lc->steal_timer = 0;
}