Re: [patch] remove unused acct variables from task_struct
- From: Jay Lan <jlan@xxxxxxxxxxxx>
- Date: Thu, 05 Jan 2006 11:12:58 -0800
Jes Sorensen wrote:
This patch removes three acct related variables from struct task_struct which are no longer in use. Their values were calculated in acct_update_integrals, but never read back by anything.
Please don't. I will send in a patch to display those collected acct data via proc fs soon. We need those information.
Thanks, - jay
Signed-off-by: Jes Sorensen <jes@xxxxxxx>
----
fs/compat.c | 2 -- fs/exec.c | 2 -- include/linux/sched.h | 5 ----- kernel/acct.c | 31 ------------------------------- kernel/exit.c | 1 - kernel/fork.c | 1 - kernel/sched.c | 3 --- 7 files changed, 45 deletions(-)
Index: linux-2.6.15/fs/compat.c
===================================================================
--- linux-2.6.15.orig/fs/compat.c
+++ linux-2.6.15/fs/compat.c
@@ -44,7 +44,6 @@
#include <linux/nfsd/syscall.h>
#include <linux/personality.h>
#include <linux/rwsem.h>
-#include <linux/acct.h>
#include <linux/mm.h>
#include <net/sock.h> /* siocdevprivate_ioctl */
@@ -1482,7 +1481,6 @@
/* execve success */
security_bprm_free(bprm);
- acct_update_integrals(current);
kfree(bprm);
return retval;
}
Index: linux-2.6.15/fs/exec.c
===================================================================
--- linux-2.6.15.orig/fs/exec.c
+++ linux-2.6.15/fs/exec.c
@@ -47,7 +47,6 @@
#include <linux/security.h>
#include <linux/syscalls.h>
#include <linux/rmap.h>
-#include <linux/acct.h>
#include <linux/cn_proc.h>
#include <asm/uaccess.h>
@@ -1198,7 +1197,6 @@
/* execve success */
security_bprm_free(bprm);
- acct_update_integrals(current);
kfree(bprm);
return retval;
}
Index: linux-2.6.15/include/linux/sched.h
===================================================================
--- linux-2.6.15.orig/include/linux/sched.h
+++ linux-2.6.15/include/linux/sched.h
@@ -842,11 +842,6 @@
wait_queue_t *io_wait;
/* i/o counters(bytes read/written, #syscalls */
u64 rchar, wchar, syscr, syscw;
-#if defined(CONFIG_BSD_PROCESS_ACCT)
- u64 acct_rss_mem1; /* accumulated rss usage */
- u64 acct_vm_mem1; /* accumulated virtual memory usage */
- clock_t acct_stimexpd; /* clock_t-converted stime since last update */
-#endif
#ifdef CONFIG_NUMA
struct mempolicy *mempolicy;
short il_next;
Index: linux-2.6.15/kernel/acct.c
===================================================================
--- linux-2.6.15.orig/kernel/acct.c
+++ linux-2.6.15/kernel/acct.c
@@ -571,34 +571,3 @@
do_acct_process(exitcode, file);
fput(file);
}
-
-
-/**
- * acct_update_integrals - update mm integral fields in task_struct
- * @tsk: task_struct for accounting
- */
-void acct_update_integrals(struct task_struct *tsk)
-{
- if (likely(tsk->mm)) {
- long delta = tsk->stime - tsk->acct_stimexpd;
-
- if (delta == 0)
- return;
- tsk->acct_stimexpd = tsk->stime;
- tsk->acct_rss_mem1 += delta * get_mm_rss(tsk->mm);
- tsk->acct_vm_mem1 += delta * tsk->mm->total_vm;
- }
-}
-
-/**
- * acct_clear_integrals - clear the mm integral fields in task_struct
- * @tsk: task_struct whose accounting fields are cleared
- */
-void acct_clear_integrals(struct task_struct *tsk)
-{
- if (tsk) {
- tsk->acct_stimexpd = 0;
- tsk->acct_rss_mem1 = 0;
- tsk->acct_vm_mem1 = 0;
- }
-}
Index: linux-2.6.15/kernel/exit.c
===================================================================
--- linux-2.6.15.orig/kernel/exit.c
+++ linux-2.6.15/kernel/exit.c
@@ -835,7 +835,6 @@
current->comm, current->pid,
preempt_count());
- acct_update_integrals(tsk);
if (tsk->mm) {
update_hiwater_rss(tsk->mm);
update_hiwater_vm(tsk->mm);
Index: linux-2.6.15/kernel/fork.c
===================================================================
--- linux-2.6.15.orig/kernel/fork.c
+++ linux-2.6.15/kernel/fork.c
@@ -949,7 +949,6 @@
p->wchar = 0; /* I/O counter: bytes written */
p->syscr = 0; /* I/O counter: read syscalls */
p->syscw = 0; /* I/O counter: write syscalls */
- acct_clear_integrals(p);
p->it_virt_expires = cputime_zero;
p->it_prof_expires = cputime_zero;
Index: linux-2.6.15/kernel/sched.c
===================================================================
--- linux-2.6.15.orig/kernel/sched.c
+++ linux-2.6.15/kernel/sched.c
@@ -46,7 +46,6 @@
#include <linux/seq_file.h>
#include <linux/syscalls.h>
#include <linux/times.h>
-#include <linux/acct.h>
#include <asm/tlb.h>
#include <asm/unistd.h>
@@ -2608,8 +2607,6 @@
cpustat->iowait = cputime64_add(cpustat->iowait, tmp);
else
cpustat->idle = cputime64_add(cpustat->idle, tmp);
- /* Account for system time used */
- acct_update_integrals(p);
}
/*
-
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