From: Laurent Vivier <Laurent.Vivier@bull.net>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: [RESEND 2][PATCH 1/4] Introduce a new field "guest" in cpustat
Date: Mon, 10 Sep 2007 16:12:49 +0200 [thread overview]
Message-ID: <46E550E1.9080903@bull.net> (raw)
[-- Attachment #1: Type: text/plain, Size: 388 bytes --]
[PATCH 1/4] as recent CPUs introduce a third running state, after "user" and
"system", we need a new field, "guest", in cpustat to store the time used by
the CPU to run virtual CPU. Modify /proc/stat to display this new field.
Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
--
------------- Laurent.Vivier@bull.net --------------
"Software is hard" - Donald Knuth
[-- Attachment #2: proc_stat_guest --]
[-- Type: text/plain, Size: 3307 bytes --]
Index: linux-2.6/fs/proc/proc_misc.c
===================================================================
--- linux-2.6.orig/fs/proc/proc_misc.c 2007-09-10 14:15:55.000000000 +0200
+++ linux-2.6/fs/proc/proc_misc.c 2007-09-10 14:18:02.000000000 +0200
@@ -443,6 +443,7 @@ static int show_stat(struct seq_file *p,
int i;
unsigned long jif;
cputime64_t user, nice, system, idle, iowait, irq, softirq, steal;
+ cputime64_t guest;
u64 sum = 0;
struct timespec boottime;
unsigned int *per_irq_sum;
@@ -453,6 +454,7 @@ static int show_stat(struct seq_file *p,
user = nice = system = idle = iowait =
irq = softirq = steal = cputime64_zero;
+ guest = cputime64_zero;
getboottime(&boottime);
jif = boottime.tv_sec;
@@ -467,6 +469,7 @@ static int show_stat(struct seq_file *p,
irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq);
softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq);
steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal);
+ guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest);
for (j = 0; j < NR_IRQS; j++) {
unsigned int temp = kstat_cpu(i).irqs[j];
sum += temp;
@@ -474,7 +477,7 @@ static int show_stat(struct seq_file *p,
}
}
- seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu\n",
+ seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
(unsigned long long)cputime64_to_clock_t(user),
(unsigned long long)cputime64_to_clock_t(nice),
(unsigned long long)cputime64_to_clock_t(system),
@@ -482,7 +485,8 @@ static int show_stat(struct seq_file *p,
(unsigned long long)cputime64_to_clock_t(iowait),
(unsigned long long)cputime64_to_clock_t(irq),
(unsigned long long)cputime64_to_clock_t(softirq),
- (unsigned long long)cputime64_to_clock_t(steal));
+ (unsigned long long)cputime64_to_clock_t(steal),
+ (unsigned long long)cputime64_to_clock_t(guest));
for_each_online_cpu(i) {
/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
@@ -494,7 +498,9 @@ static int show_stat(struct seq_file *p,
irq = kstat_cpu(i).cpustat.irq;
softirq = kstat_cpu(i).cpustat.softirq;
steal = kstat_cpu(i).cpustat.steal;
- seq_printf(p, "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu\n",
+ guest = kstat_cpu(i).cpustat.guest;
+ seq_printf(p,
+ "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
i,
(unsigned long long)cputime64_to_clock_t(user),
(unsigned long long)cputime64_to_clock_t(nice),
@@ -503,7 +509,8 @@ static int show_stat(struct seq_file *p,
(unsigned long long)cputime64_to_clock_t(iowait),
(unsigned long long)cputime64_to_clock_t(irq),
(unsigned long long)cputime64_to_clock_t(softirq),
- (unsigned long long)cputime64_to_clock_t(steal));
+ (unsigned long long)cputime64_to_clock_t(steal),
+ (unsigned long long)cputime64_to_clock_t(guest));
}
seq_printf(p, "intr %llu", (unsigned long long)sum);
Index: linux-2.6/include/linux/kernel_stat.h
===================================================================
--- linux-2.6.orig/include/linux/kernel_stat.h 2007-09-10 14:15:55.000000000 +0200
+++ linux-2.6/include/linux/kernel_stat.h 2007-09-10 14:17:01.000000000 +0200
@@ -23,6 +23,7 @@ struct cpu_usage_stat {
cputime64_t idle;
cputime64_t iowait;
cputime64_t steal;
+ cputime64_t guest;
};
struct kernel_stat {
reply other threads:[~2007-09-10 14:13 UTC|newest]
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