From 77787bfb44da6e6166af088226707aeccee27968 Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sun, 25 Jun 2006 05:49:26 -0700 Subject: [PATCH] pacct: none-delayed process accounting accumulation In current 2.6.17 implementation, signal_struct refered from task_struct is used for per-process data structure. The pacct facility also uses it as a per-process data structure to store stime, utime, minflt, majflt. But those members are saved in __exit_signal(). It's too late. For example, if some threads exits at same time, pacct facility has a possibility to drop accountings for a part of those threads. (see, the following 'The results of original 2.6.17 kernel') I think accounting information should be completely collected into the per-process data structure before writing out an accounting record. This patch fixes this matter. Accumulation of stime, utime, minflt and majflt are done before generating accounting record. [mingo@elte.hu: fix acct_collect() siglock bug found by lockdep] Signed-off-by: KaiGai Kohei Signed-off-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index d8429dc250f0..8d11d9310db0 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -362,6 +362,8 @@ struct pacct_struct { int ac_flag; long ac_exitcode; unsigned long ac_mem; + cputime_t ac_utime, ac_stime; + unsigned long ac_minflt, ac_majflt; }; /* -- cgit v1.2.3