CGroup API files: rename read/write_uint methods to read_write_u64

Several people have justifiably complained that the "_uint" suffix is
inappropriate for functions that handle u64 values, so this patch just renames
all these functions and their users to have the suffic _u64.

[peterz@infradead.org: build fix]
Signed-off-by: Paul Menage <menage@google.com>
Cc: "Li Zefan" <lizf@cn.fujitsu.com>
Cc: Balbir Singh <balbir@in.ibm.com>
Cc: Paul Jackson <pj@sgi.com>
Cc: Pavel Emelyanov <xemul@openvz.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "YAMAMOTO Takashi" <yamamoto@valinux.co.jp>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/cgroup.h

@@ -190,20 +190,20 @@ struct cftype {
 			 struct file *file,
 			 char __user *buf, size_t nbytes, loff_t *ppos);
 	/*
-	 * read_uint() is a shortcut for the common case of returning a
+	 * read_u64() is a shortcut for the common case of returning a
 	 * single integer. Use it in place of read()
 	 */
-	u64 (*read_uint) (struct cgroup *cgrp, struct cftype *cft);
+	u64 (*read_u64) (struct cgroup *cgrp, struct cftype *cft);
 	ssize_t (*write) (struct cgroup *cgrp, struct cftype *cft,
 			  struct file *file,
 			  const char __user *buf, size_t nbytes, loff_t *ppos);
 
 	/*
-	 * write_uint() is a shortcut for the common case of accepting
+	 * write_u64() is a shortcut for the common case of accepting
 	 * a single integer (as parsed by simple_strtoull) from
 	 * userspace. Use in place of write(); return 0 or error.
 	 */
-	int (*write_uint) (struct cgroup *cgrp, struct cftype *cft, u64 val);
+	int (*write_u64) (struct cgroup *cgrp, struct cftype *cft, u64 val);
 
 	int (*release) (struct inode *inode, struct file *file);
 };

kernel/cgroup.c

@@ -1311,7 +1311,7 @@ enum cgroup_filetype {
 	FILE_RELEASE_AGENT,
 };
 
-static ssize_t cgroup_write_uint(struct cgroup *cgrp, struct cftype *cft,
+static ssize_t cgroup_write_u64(struct cgroup *cgrp, struct cftype *cft,
 				struct file *file,
 				const char __user *userbuf,
 				size_t nbytes, loff_t *unused_ppos)
@@ -1338,7 +1338,7 @@ static ssize_t cgroup_write_uint(struct cgroup *cgrp, struct cftype *cft,
 		return -EINVAL;
 
 	/* Pass to subsystem */
-	retval = cft->write_uint(cgrp, cft, val);
+	retval = cft->write_u64(cgrp, cft, val);
 	if (!retval)
 		retval = nbytes;
 	return retval;
@@ -1419,18 +1419,18 @@ static ssize_t cgroup_file_write(struct file *file, const char __user *buf,
 		return -ENODEV;
 	if (cft->write)
 		return cft->write(cgrp, cft, file, buf, nbytes, ppos);
-	if (cft->write_uint)
-		return cgroup_write_uint(cgrp, cft, file, buf, nbytes, ppos);
+	if (cft->write_u64)
+		return cgroup_write_u64(cgrp, cft, file, buf, nbytes, ppos);
 	return -EINVAL;
 }
 
-static ssize_t cgroup_read_uint(struct cgroup *cgrp, struct cftype *cft,
+static ssize_t cgroup_read_u64(struct cgroup *cgrp, struct cftype *cft,
 			       struct file *file,
 			       char __user *buf, size_t nbytes,
 			       loff_t *ppos)
 {
 	char tmp[64];
-	u64 val = cft->read_uint(cgrp, cft);
+	u64 val = cft->read_u64(cgrp, cft);
 	int len = sprintf(tmp, "%llu\n", (unsigned long long) val);
 
 	return simple_read_from_buffer(buf, nbytes, ppos, tmp, len);
@@ -1490,8 +1490,8 @@ static ssize_t cgroup_file_read(struct file *file, char __user *buf,
 
 	if (cft->read)
 		return cft->read(cgrp, cft, file, buf, nbytes, ppos);
-	if (cft->read_uint)
-		return cgroup_read_uint(cgrp, cft, file, buf, nbytes, ppos);
+	if (cft->read_u64)
+		return cgroup_read_u64(cgrp, cft, file, buf, nbytes, ppos);
 	return -EINVAL;
 }
 
@@ -2158,14 +2158,14 @@ static struct cftype files[] = {
 
 	{
 		.name = "notify_on_release",
-		.read_uint = cgroup_read_notify_on_release,
+		.read_u64 = cgroup_read_notify_on_release,
 		.write = cgroup_common_file_write,
 		.private = FILE_NOTIFY_ON_RELEASE,
 	},
 
 	{
 		.name = "releasable",
-		.read_uint = cgroup_read_releasable,
+		.read_u64 = cgroup_read_releasable,
 		.private = FILE_RELEASABLE,
 	}
 };

kernel/cgroup_debug.c

@@ -65,21 +65,21 @@ static u64 current_css_set_refcount_read(struct cgroup *cont,
 static struct cftype files[] =  {
 	{
 		.name = "cgroup_refcount",
-		.read_uint = cgroup_refcount_read,
+		.read_u64 = cgroup_refcount_read,
 	},
 	{
 		.name = "taskcount",
-		.read_uint = taskcount_read,
+		.read_u64 = taskcount_read,
 	},
 
 	{
 		.name = "current_css_set",
-		.read_uint = current_css_set_read,
+		.read_u64 = current_css_set_read,
 	},
 
 	{
 		.name = "current_css_set_refcount",
-		.read_uint = current_css_set_refcount_read,
+		.read_u64 = current_css_set_refcount_read,
 	},
 };
 

kernel/sched.c

@@ -9057,13 +9057,13 @@ cpu_cgroup_attach(struct cgroup_subsys *ss, struct cgroup *cgrp,
 }
 
 #ifdef CONFIG_FAIR_GROUP_SCHED
-static int cpu_shares_write_uint(struct cgroup *cgrp, struct cftype *cftype,
+static int cpu_shares_write_u64(struct cgroup *cgrp, struct cftype *cftype,
 				u64 shareval)
 {
 	return sched_group_set_shares(cgroup_tg(cgrp), shareval);
 }
 
-static u64 cpu_shares_read_uint(struct cgroup *cgrp, struct cftype *cft)
+static u64 cpu_shares_read_u64(struct cgroup *cgrp, struct cftype *cft)
 {
 	struct task_group *tg = cgroup_tg(cgrp);
 
@@ -9133,8 +9133,8 @@ static struct cftype cpu_files[] = {
 #ifdef CONFIG_FAIR_GROUP_SCHED
 	{
 		.name = "shares",
-		.read_uint = cpu_shares_read_uint,
-		.write_uint = cpu_shares_write_uint,
+		.read_u64 = cpu_shares_read_u64,
+		.write_u64 = cpu_shares_write_u64,
 	},
 #endif
 #ifdef CONFIG_RT_GROUP_SCHED
@@ -9145,8 +9145,8 @@ static struct cftype cpu_files[] = {
 	},
 	{
 		.name = "rt_period_us",
-		.read_uint = cpu_rt_period_read_uint,
-		.write_uint = cpu_rt_period_write_uint,
+		.read_u64 = cpu_rt_period_read_uint,
+		.write_u64 = cpu_rt_period_write_uint,
 	},
 #endif
 };
@@ -9277,8 +9277,8 @@ static int cpuusage_write(struct cgroup *cgrp, struct cftype *cftype,
 static struct cftype files[] = {
 	{
 		.name = "usage",
-		.read_uint = cpuusage_read,
-		.write_uint = cpuusage_write,
+		.read_u64 = cpuusage_read,
+		.write_u64 = cpuusage_write,
 	},
 };