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s390/cputime: reset all accounting fields on fork 

copy_thread has to reset all cputime related field in the task struct,
not only user_timer and system_timer.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky 2017-03-01 09:18:34 +01:00
parent e69ca822ce
commit 3c915bdc17
1 changed files with 3 additions and 0 deletions
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3
arch/s390/kernel/process.c
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@ -121,7 +121,10 @@ int copy_thread_tls(unsigned long clone_flags, unsigned long new_stackp,
clear_tsk_thread_flag(p, TIF_SINGLE_STEP);
/* Initialize per thread user and system timer values */
p->thread.user_timer = 0;
p->thread.guest_timer = 0;
p->thread.system_timer = 0;
p->thread.hardirq_timer = 0;
p->thread.softirq_timer = 0;
frame->sf.back_chain = 0;
/* new return point is ret_from_fork */