Re: [PATCH 4/9] cgroup_freezer: trivial cleanups
On Sat 03-11-12 01:38:30, Tejun Heo wrote:
> * Clean-up indentation and line-breaks. Drop the invalid comment
> about freezer->lock.
>
> * Make all internal functions take @freezer instead of both @cgroup
> and @freezer.
>
> Signed-off-by: Tejun Heo
Looks reasonable
Reviewed-by: Michal Hocko
> ---
> kernel/cgroup_freezer.c | 41 +++--
> 1 file changed, 19 insertions(+), 22 deletions(-)
>
> diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
> index bedefd9..975b3d8 100644
> --- a/kernel/cgroup_freezer.c
> +++ b/kernel/cgroup_freezer.c
> @@ -29,17 +29,15 @@ enum freezer_state {
> };
>
> struct freezer {
> - struct cgroup_subsys_state css;
> - enum freezer_state state;
> - spinlock_t lock; /* protects _writes_ to state */
> + struct cgroup_subsys_state css;
> + enum freezer_state state;
> + spinlock_t lock;
> };
>
> -static inline struct freezer *cgroup_freezer(
> - struct cgroup *cgroup)
> +static inline struct freezer *cgroup_freezer(struct cgroup *cgroup)
> {
> - return container_of(
> - cgroup_subsys_state(cgroup, freezer_subsys_id),
> - struct freezer, css);
> + return container_of(cgroup_subsys_state(cgroup, freezer_subsys_id),
> + struct freezer, css);
> }
>
> static inline struct freezer *task_freezer(struct task_struct *task)
> @@ -180,8 +178,9 @@ out:
> * migrated into or out of @cgroup, so we can't verify task states against
> * @freezer state here. See freezer_attach() for details.
> */
> -static void update_if_frozen(struct cgroup *cgroup, struct freezer *freezer)
> +static void update_if_frozen(struct freezer *freezer)
> {
> + struct cgroup *cgroup = freezer->css.cgroup;
> struct cgroup_iter it;
> struct task_struct *task;
>
> @@ -211,12 +210,11 @@ notyet:
> static int freezer_read(struct cgroup *cgroup, struct cftype *cft,
> struct seq_file *m)
> {
> - struct freezer *freezer;
> + struct freezer *freezer = cgroup_freezer(cgroup);
> enum freezer_state state;
>
> - freezer = cgroup_freezer(cgroup);
> spin_lock_irq(>lock);
> - update_if_frozen(cgroup, freezer);
> + update_if_frozen(freezer);
> state = freezer->state;
> spin_unlock_irq(>lock);
>
> @@ -225,8 +223,9 @@ static int freezer_read(struct cgroup *cgroup, struct
> cftype *cft,
> return 0;
> }
>
> -static void freeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
> +static void freeze_cgroup(struct freezer *freezer)
> {
> + struct cgroup *cgroup = freezer->css.cgroup;
> struct cgroup_iter it;
> struct task_struct *task;
>
> @@ -236,8 +235,9 @@ static void freeze_cgroup(struct cgroup *cgroup, struct
> freezer *freezer)
> cgroup_iter_end(cgroup, );
> }
>
> -static void unfreeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
> +static void unfreeze_cgroup(struct freezer *freezer)
> {
> + struct cgroup *cgroup = freezer->css.cgroup;
> struct cgroup_iter it;
> struct task_struct *task;
>
> @@ -247,11 +247,9 @@ static void unfreeze_cgroup(struct cgroup *cgroup,
> struct freezer *freezer)
> cgroup_iter_end(cgroup, );
> }
>
> -static void freezer_change_state(struct cgroup *cgroup,
> +static void freezer_change_state(struct freezer *freezer,
>enum freezer_state goal_state)
> {
> - struct freezer *freezer = cgroup_freezer(cgroup);
> -
> /* also synchronizes against task migration, see freezer_attach() */
> spin_lock_irq(>lock);
>
> @@ -260,13 +258,13 @@ static void freezer_change_state(struct cgroup *cgroup,
> if (freezer->state != CGROUP_THAWED)
> atomic_dec(_freezing_cnt);
> freezer->state = CGROUP_THAWED;
> - unfreeze_cgroup(cgroup, freezer);
> + unfreeze_cgroup(freezer);
> break;
> case CGROUP_FROZEN:
> if (freezer->state == CGROUP_THAWED)
> atomic_inc(_freezing_cnt);
> freezer->state = CGROUP_FREEZING;
> - freeze_cgroup(cgroup, freezer);
> + freeze_cgroup(freezer);
> break;
> default:
> BUG();
> @@ -275,8 +273,7 @@ static void freezer_change_state(struct cgroup *cgroup,
> spin_unlock_irq(>lock);
> }
>
> -static int freezer_write(struct cgroup *cgroup,
> - struct cftype *cft,
> +static int freezer_write(struct cgroup *cgroup, struct cftype *cft,
>const char *buffer)
> {
> enum freezer_state goal_state;
> @@ -288,7 +285,7 @@ static int freezer_write(struct cgroup *cgroup,
> else
> return -EINVAL;
>
> - freezer_change_state(cgroup, goal_state);
> + freezer_change_state(cgroup_freezer(cgroup), goal_state);
> return 0;
> }
>
Re: [PATCH 4/9] cgroup_freezer: trivial cleanups
On Sat 03-11-12 01:38:30, Tejun Heo wrote:
* Clean-up indentation and line-breaks. Drop the invalid comment
about freezer-lock.
* Make all internal functions take @freezer instead of both @cgroup
and @freezer.
Signed-off-by: Tejun Heo t...@kernel.org
Looks reasonable
Reviewed-by: Michal Hocko mho...@suse.cz
---
kernel/cgroup_freezer.c | 41 +++--
1 file changed, 19 insertions(+), 22 deletions(-)
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index bedefd9..975b3d8 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -29,17 +29,15 @@ enum freezer_state {
};
struct freezer {
- struct cgroup_subsys_state css;
- enum freezer_state state;
- spinlock_t lock; /* protects _writes_ to state */
+ struct cgroup_subsys_state css;
+ enum freezer_state state;
+ spinlock_t lock;
};
-static inline struct freezer *cgroup_freezer(
- struct cgroup *cgroup)
+static inline struct freezer *cgroup_freezer(struct cgroup *cgroup)
{
- return container_of(
- cgroup_subsys_state(cgroup, freezer_subsys_id),
- struct freezer, css);
+ return container_of(cgroup_subsys_state(cgroup, freezer_subsys_id),
+ struct freezer, css);
}
static inline struct freezer *task_freezer(struct task_struct *task)
@@ -180,8 +178,9 @@ out:
* migrated into or out of @cgroup, so we can't verify task states against
* @freezer state here. See freezer_attach() for details.
*/
-static void update_if_frozen(struct cgroup *cgroup, struct freezer *freezer)
+static void update_if_frozen(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -211,12 +210,11 @@ notyet:
static int freezer_read(struct cgroup *cgroup, struct cftype *cft,
struct seq_file *m)
{
- struct freezer *freezer;
+ struct freezer *freezer = cgroup_freezer(cgroup);
enum freezer_state state;
- freezer = cgroup_freezer(cgroup);
spin_lock_irq(freezer-lock);
- update_if_frozen(cgroup, freezer);
+ update_if_frozen(freezer);
state = freezer-state;
spin_unlock_irq(freezer-lock);
@@ -225,8 +223,9 @@ static int freezer_read(struct cgroup *cgroup, struct
cftype *cft,
return 0;
}
-static void freeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void freeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -236,8 +235,9 @@ static void freeze_cgroup(struct cgroup *cgroup, struct
freezer *freezer)
cgroup_iter_end(cgroup, it);
}
-static void unfreeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void unfreeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -247,11 +247,9 @@ static void unfreeze_cgroup(struct cgroup *cgroup,
struct freezer *freezer)
cgroup_iter_end(cgroup, it);
}
-static void freezer_change_state(struct cgroup *cgroup,
+static void freezer_change_state(struct freezer *freezer,
enum freezer_state goal_state)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
-
/* also synchronizes against task migration, see freezer_attach() */
spin_lock_irq(freezer-lock);
@@ -260,13 +258,13 @@ static void freezer_change_state(struct cgroup *cgroup,
if (freezer-state != CGROUP_THAWED)
atomic_dec(system_freezing_cnt);
freezer-state = CGROUP_THAWED;
- unfreeze_cgroup(cgroup, freezer);
+ unfreeze_cgroup(freezer);
break;
case CGROUP_FROZEN:
if (freezer-state == CGROUP_THAWED)
atomic_inc(system_freezing_cnt);
freezer-state = CGROUP_FREEZING;
- freeze_cgroup(cgroup, freezer);
+ freeze_cgroup(freezer);
break;
default:
BUG();
@@ -275,8 +273,7 @@ static void freezer_change_state(struct cgroup *cgroup,
spin_unlock_irq(freezer-lock);
}
-static int freezer_write(struct cgroup *cgroup,
- struct cftype *cft,
+static int freezer_write(struct cgroup *cgroup, struct cftype *cft,
const char *buffer)
{
enum freezer_state goal_state;
@@ -288,7 +285,7 @@ static int freezer_write(struct cgroup *cgroup,
else
return -EINVAL;
- freezer_change_state(cgroup, goal_state);
+ freezer_change_state(cgroup_freezer(cgroup), goal_state);
return 0;
}
--
1.7.11.7
--
Michal Hocko
SUSE Labs
--
To unsubscribe from this
Re: [PATCH 4/9] cgroup_freezer: trivial cleanups
(2012/11/03 17:38), Tejun Heo wrote: * Clean-up indentation and line-breaks. Drop the invalid comment about freezer->lock. * Make all internal functions take @freezer instead of both @cgroup and @freezer. Signed-off-by: Tejun Heo Reviewed-by: KAMEZAWA Hiroyuki -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [PATCH 4/9] cgroup_freezer: trivial cleanups
(2012/11/03 17:38), Tejun Heo wrote: * Clean-up indentation and line-breaks. Drop the invalid comment about freezer-lock. * Make all internal functions take @freezer instead of both @cgroup and @freezer. Signed-off-by: Tejun Heo t...@kernel.org Reviewed-by: KAMEZAWA Hiroyuki kamezawa.hir...@jp.fujitsu.com -- To unsubscribe from this list: send the line unsubscribe linux-kernel in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
[PATCH 4/9] cgroup_freezer: trivial cleanups
* Clean-up indentation and line-breaks. Drop the invalid comment
about freezer->lock.
* Make all internal functions take @freezer instead of both @cgroup
and @freezer.
Signed-off-by: Tejun Heo
---
kernel/cgroup_freezer.c | 41 +++--
1 file changed, 19 insertions(+), 22 deletions(-)
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index bedefd9..975b3d8 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -29,17 +29,15 @@ enum freezer_state {
};
struct freezer {
- struct cgroup_subsys_state css;
- enum freezer_state state;
- spinlock_t lock; /* protects _writes_ to state */
+ struct cgroup_subsys_state css;
+ enum freezer_state state;
+ spinlock_t lock;
};
-static inline struct freezer *cgroup_freezer(
- struct cgroup *cgroup)
+static inline struct freezer *cgroup_freezer(struct cgroup *cgroup)
{
- return container_of(
- cgroup_subsys_state(cgroup, freezer_subsys_id),
- struct freezer, css);
+ return container_of(cgroup_subsys_state(cgroup, freezer_subsys_id),
+ struct freezer, css);
}
static inline struct freezer *task_freezer(struct task_struct *task)
@@ -180,8 +178,9 @@ out:
* migrated into or out of @cgroup, so we can't verify task states against
* @freezer state here. See freezer_attach() for details.
*/
-static void update_if_frozen(struct cgroup *cgroup, struct freezer *freezer)
+static void update_if_frozen(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer->css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -211,12 +210,11 @@ notyet:
static int freezer_read(struct cgroup *cgroup, struct cftype *cft,
struct seq_file *m)
{
- struct freezer *freezer;
+ struct freezer *freezer = cgroup_freezer(cgroup);
enum freezer_state state;
- freezer = cgroup_freezer(cgroup);
spin_lock_irq(>lock);
- update_if_frozen(cgroup, freezer);
+ update_if_frozen(freezer);
state = freezer->state;
spin_unlock_irq(>lock);
@@ -225,8 +223,9 @@ static int freezer_read(struct cgroup *cgroup, struct
cftype *cft,
return 0;
}
-static void freeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void freeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer->css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -236,8 +235,9 @@ static void freeze_cgroup(struct cgroup *cgroup, struct
freezer *freezer)
cgroup_iter_end(cgroup, );
}
-static void unfreeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void unfreeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer->css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -247,11 +247,9 @@ static void unfreeze_cgroup(struct cgroup *cgroup, struct
freezer *freezer)
cgroup_iter_end(cgroup, );
}
-static void freezer_change_state(struct cgroup *cgroup,
+static void freezer_change_state(struct freezer *freezer,
enum freezer_state goal_state)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
-
/* also synchronizes against task migration, see freezer_attach() */
spin_lock_irq(>lock);
@@ -260,13 +258,13 @@ static void freezer_change_state(struct cgroup *cgroup,
if (freezer->state != CGROUP_THAWED)
atomic_dec(_freezing_cnt);
freezer->state = CGROUP_THAWED;
- unfreeze_cgroup(cgroup, freezer);
+ unfreeze_cgroup(freezer);
break;
case CGROUP_FROZEN:
if (freezer->state == CGROUP_THAWED)
atomic_inc(_freezing_cnt);
freezer->state = CGROUP_FREEZING;
- freeze_cgroup(cgroup, freezer);
+ freeze_cgroup(freezer);
break;
default:
BUG();
@@ -275,8 +273,7 @@ static void freezer_change_state(struct cgroup *cgroup,
spin_unlock_irq(>lock);
}
-static int freezer_write(struct cgroup *cgroup,
-struct cftype *cft,
+static int freezer_write(struct cgroup *cgroup, struct cftype *cft,
const char *buffer)
{
enum freezer_state goal_state;
@@ -288,7 +285,7 @@ static int freezer_write(struct cgroup *cgroup,
else
return -EINVAL;
- freezer_change_state(cgroup, goal_state);
+ freezer_change_state(cgroup_freezer(cgroup), goal_state);
return 0;
}
--
1.7.11.7
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at
[PATCH 4/9] cgroup_freezer: trivial cleanups
* Clean-up indentation and line-breaks. Drop the invalid comment
about freezer-lock.
* Make all internal functions take @freezer instead of both @cgroup
and @freezer.
Signed-off-by: Tejun Heo t...@kernel.org
---
kernel/cgroup_freezer.c | 41 +++--
1 file changed, 19 insertions(+), 22 deletions(-)
diff --git a/kernel/cgroup_freezer.c b/kernel/cgroup_freezer.c
index bedefd9..975b3d8 100644
--- a/kernel/cgroup_freezer.c
+++ b/kernel/cgroup_freezer.c
@@ -29,17 +29,15 @@ enum freezer_state {
};
struct freezer {
- struct cgroup_subsys_state css;
- enum freezer_state state;
- spinlock_t lock; /* protects _writes_ to state */
+ struct cgroup_subsys_state css;
+ enum freezer_state state;
+ spinlock_t lock;
};
-static inline struct freezer *cgroup_freezer(
- struct cgroup *cgroup)
+static inline struct freezer *cgroup_freezer(struct cgroup *cgroup)
{
- return container_of(
- cgroup_subsys_state(cgroup, freezer_subsys_id),
- struct freezer, css);
+ return container_of(cgroup_subsys_state(cgroup, freezer_subsys_id),
+ struct freezer, css);
}
static inline struct freezer *task_freezer(struct task_struct *task)
@@ -180,8 +178,9 @@ out:
* migrated into or out of @cgroup, so we can't verify task states against
* @freezer state here. See freezer_attach() for details.
*/
-static void update_if_frozen(struct cgroup *cgroup, struct freezer *freezer)
+static void update_if_frozen(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -211,12 +210,11 @@ notyet:
static int freezer_read(struct cgroup *cgroup, struct cftype *cft,
struct seq_file *m)
{
- struct freezer *freezer;
+ struct freezer *freezer = cgroup_freezer(cgroup);
enum freezer_state state;
- freezer = cgroup_freezer(cgroup);
spin_lock_irq(freezer-lock);
- update_if_frozen(cgroup, freezer);
+ update_if_frozen(freezer);
state = freezer-state;
spin_unlock_irq(freezer-lock);
@@ -225,8 +223,9 @@ static int freezer_read(struct cgroup *cgroup, struct
cftype *cft,
return 0;
}
-static void freeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void freeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -236,8 +235,9 @@ static void freeze_cgroup(struct cgroup *cgroup, struct
freezer *freezer)
cgroup_iter_end(cgroup, it);
}
-static void unfreeze_cgroup(struct cgroup *cgroup, struct freezer *freezer)
+static void unfreeze_cgroup(struct freezer *freezer)
{
+ struct cgroup *cgroup = freezer-css.cgroup;
struct cgroup_iter it;
struct task_struct *task;
@@ -247,11 +247,9 @@ static void unfreeze_cgroup(struct cgroup *cgroup, struct
freezer *freezer)
cgroup_iter_end(cgroup, it);
}
-static void freezer_change_state(struct cgroup *cgroup,
+static void freezer_change_state(struct freezer *freezer,
enum freezer_state goal_state)
{
- struct freezer *freezer = cgroup_freezer(cgroup);
-
/* also synchronizes against task migration, see freezer_attach() */
spin_lock_irq(freezer-lock);
@@ -260,13 +258,13 @@ static void freezer_change_state(struct cgroup *cgroup,
if (freezer-state != CGROUP_THAWED)
atomic_dec(system_freezing_cnt);
freezer-state = CGROUP_THAWED;
- unfreeze_cgroup(cgroup, freezer);
+ unfreeze_cgroup(freezer);
break;
case CGROUP_FROZEN:
if (freezer-state == CGROUP_THAWED)
atomic_inc(system_freezing_cnt);
freezer-state = CGROUP_FREEZING;
- freeze_cgroup(cgroup, freezer);
+ freeze_cgroup(freezer);
break;
default:
BUG();
@@ -275,8 +273,7 @@ static void freezer_change_state(struct cgroup *cgroup,
spin_unlock_irq(freezer-lock);
}
-static int freezer_write(struct cgroup *cgroup,
-struct cftype *cft,
+static int freezer_write(struct cgroup *cgroup, struct cftype *cft,
const char *buffer)
{
enum freezer_state goal_state;
@@ -288,7 +285,7 @@ static int freezer_write(struct cgroup *cgroup,
else
return -EINVAL;
- freezer_change_state(cgroup, goal_state);
+ freezer_change_state(cgroup_freezer(cgroup), goal_state);
return 0;
}
--
1.7.11.7
--
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