fa13a5a1f2
Since powerpc started using CONFIG_GENERIC_CLOCKEVENTS, the deterministic CPU accounting (CONFIG_VIRT_CPU_ACCOUNTING) has been broken on powerpc, because we end up counting user time twice: once in timer_interrupt() and once in update_process_times(). This fixes the problem by pulling the code in update_process_times that updates utime and stime into a separate function called account_process_tick. If CONFIG_VIRT_CPU_ACCOUNTING is not defined, there is a version of account_process_tick in kernel/timer.c that simply accounts a whole tick to either utime or stime as before. If CONFIG_VIRT_CPU_ACCOUNTING is defined, then arch code gets to implement account_process_tick. This also lets us simplify the s390 code a bit; it means that the s390 timer interrupt can now call update_process_times even when CONFIG_VIRT_CPU_ACCOUNTING is turned on, and can just implement a suitable account_process_tick(). account_process_tick() now takes the task_struct * as an argument. Tested both with and without CONFIG_VIRT_CPU_ACCOUNTING. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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| .. | ||
| asm-offsets.c | ||
| audit.c | ||
| audit.h | ||
| base.S | ||
| binfmt_elf32.c | ||
| bitmap.S | ||
| compat_audit.c | ||
| compat_exec_domain.c | ||
| compat_linux.c | ||
| compat_linux.h | ||
| compat_ptrace.h | ||
| compat_signal.c | ||
| compat_wrapper.S | ||
| cpcmd.c | ||
| crash.c | ||
| debug.c | ||
| diag.c | ||
| dis.c | ||
| early.c | ||
| ebcdic.c | ||
| entry.S | ||
| entry64.S | ||
| head.S | ||
| head31.S | ||
| head64.S | ||
| init_task.c | ||
| ipl.c | ||
| irq.c | ||
| kprobes.c | ||
| machine_kexec.c | ||
| Makefile | ||
| module.c | ||
| process.c | ||
| ptrace.c | ||
| reipl.S | ||
| reipl64.S | ||
| relocate_kernel.S | ||
| relocate_kernel64.S | ||
| s390_ext.c | ||
| s390_ksyms.c | ||
| semaphore.c | ||
| setup.c | ||
| signal.c | ||
| smp.c | ||
| stacktrace.c | ||
| sys_s390.c | ||
| syscalls.S | ||
| time.c | ||
| traps.c | ||
| vmlinux.lds.S | ||
| vtime.c | ||