Messages in this thread | | | Date | Mon, 22 Apr 2002 09:40:33 -0700 (PDT) | From | "Randy.Dunlap" <> | Subject | Re: user/system/nice accounting (SMP): need help understanding the code |
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On Mon, 22 Apr 2002, Denis Vlasenko wrote:
| As you see below, in SMP case update_one_process() is not called | in do_timer(). | OTOH, global grep over entire tree (*.[chsS]) for 'per_cpu_utime' | and 'per_cpu_user' did not turn out SMP accounting code. | Or maybe I am stupid. | | Anybody with cluebat?
Sure... ;)
| ... | void do_timer(struct pt_regs *regs) | { | (*(unsigned long *)&jiffies)++; | #ifndef CONFIG_SMP | /* SMP process accounting uses the local APIC timer */ | | update_process_times(user_mode(regs)); | #endif | mark_bh(TIMER_BH); | if (TQ_ACTIVE(tq_timer)) | mark_bh(TQUEUE_BH); | } | --
For CONFIG_SMP, each arch/cpu/kernel/*.c calls update_process_times().
-- ~Randy
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