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Message-ID: <20081017124015.GC22653@x200.localdomain>
Date: Fri, 17 Oct 2008 16:40:15 +0400
From: Alexey Dobriyan <adobriyan@...il.com>
To: linux-kernel@...r.kernel.org
Subject: [PATCH 02/31] proc: switch /proc/uptime to seq_file
>From ca4e424af8016656de18ac7c39f65cbc081d7643 Mon Sep 17 00:00:00 2001
From: Alexey Dobriyan <adobriyan@...il.com>
Date: Fri, 3 Oct 2008 02:38:18 +0400
Subject: [PATCH 02/31] proc: switch /proc/uptime to seq_file
and move it to fs/proc/uptime.c while I'm at it.
Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
---
fs/proc/Makefile | 1 +
fs/proc/proc_misc.c | 21 ---------------------
fs/proc/uptime.c | 43 +++++++++++++++++++++++++++++++++++++++++++
3 files changed, 44 insertions(+), 21 deletions(-)
create mode 100644 fs/proc/uptime.c
diff --git a/fs/proc/Makefile b/fs/proc/Makefile
index bf2ab4d..27efa14 100644
--- a/fs/proc/Makefile
+++ b/fs/proc/Makefile
@@ -10,6 +10,7 @@ proc-$(CONFIG_MMU) := mmu.o task_mmu.o
proc-y += inode.o root.o base.o generic.o array.o \
proc_tty.o proc_misc.o
proc-y += loadavg.o
+proc-y += uptime.o
proc-$(CONFIG_PROC_SYSCTL) += proc_sysctl.o
proc-$(CONFIG_NET) += proc_net.o
proc-$(CONFIG_PROC_KCORE) += kcore.o
diff --git a/fs/proc/proc_misc.c b/fs/proc/proc_misc.c
index 67bbab8..6c520f4 100644
--- a/fs/proc/proc_misc.c
+++ b/fs/proc/proc_misc.c
@@ -77,26 +77,6 @@ static int proc_calc_metrics(char *page, char **start, off_t off,
return len;
}
-static int uptime_read_proc(char *page, char **start, off_t off,
- int count, int *eof, void *data)
-{
- struct timespec uptime;
- struct timespec idle;
- int len;
- cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
-
- do_posix_clock_monotonic_gettime(&uptime);
- monotonic_to_bootbased(&uptime);
- cputime_to_timespec(idletime, &idle);
- len = sprintf(page,"%lu.%02lu %lu.%02lu\n",
- (unsigned long) uptime.tv_sec,
- (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
- (unsigned long) idle.tv_sec,
- (idle.tv_nsec / (NSEC_PER_SEC / 100)));
-
- return proc_calc_metrics(page, start, off, count, eof, len);
-}
-
int __attribute__((weak)) arch_report_meminfo(char *page)
{
return 0;
@@ -817,7 +797,6 @@ void __init proc_misc_init(void)
char *name;
int (*read_proc)(char*,char**,off_t,int,int*,void*);
} *p, simple_ones[] = {
- {"uptime", uptime_read_proc},
{"meminfo", meminfo_read_proc},
{"version", version_read_proc},
#ifdef CONFIG_PROC_HARDWARE
diff --git a/fs/proc/uptime.c b/fs/proc/uptime.c
new file mode 100644
index 0000000..0c10a0b
--- /dev/null
+++ b/fs/proc/uptime.c
@@ -0,0 +1,43 @@
+#include <linux/fs.h>
+#include <linux/init.h>
+#include <linux/proc_fs.h>
+#include <linux/sched.h>
+#include <linux/seq_file.h>
+#include <linux/time.h>
+#include <asm/cputime.h>
+
+static int uptime_proc_show(struct seq_file *m, void *v)
+{
+ struct timespec uptime;
+ struct timespec idle;
+ cputime_t idletime = cputime_add(init_task.utime, init_task.stime);
+
+ do_posix_clock_monotonic_gettime(&uptime);
+ monotonic_to_bootbased(&uptime);
+ cputime_to_timespec(idletime, &idle);
+ seq_printf(m, "%lu.%02lu %lu.%02lu\n",
+ (unsigned long) uptime.tv_sec,
+ (uptime.tv_nsec / (NSEC_PER_SEC / 100)),
+ (unsigned long) idle.tv_sec,
+ (idle.tv_nsec / (NSEC_PER_SEC / 100)));
+ return 0;
+}
+
+static int uptime_proc_open(struct inode *inode, struct file *file)
+{
+ return single_open(file, uptime_proc_show, NULL);
+}
+
+static const struct file_operations uptime_proc_fops = {
+ .open = uptime_proc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = single_release,
+};
+
+static int __init proc_uptime_init(void)
+{
+ proc_create("uptime", 0, NULL, &uptime_proc_fops);
+ return 0;
+}
+module_init(proc_uptime_init);
--
1.5.6.5
--
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