* [PATCH] [v2] debugobjects: fix debug_objects_freed accounting
@ 2018-02-22 15:52 Arnd Bergmann
2018-02-22 16:02 ` Yang Shi
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Arnd Bergmann @ 2018-02-22 15:52 UTC (permalink / raw)
To: Thomas Gleixner, Yang Shi, Waiman Long
Cc: Arnd Bergmann, Ingo Molnar, linux-kernel
The removal of the batched object freeing has caused the debug_objects_freed
to become read-only, and the reading is inside an ifdef, so gcc warns that it
is completely unused without CONFIG_DEBUG_FS:
lib/debugobjects.c:71:14: error: 'debug_objects_freed' defined but not used [-Werror=unused-variable]
Assuming we are still interested in this number, this adds back code to
keep track of the freed objects.
Fixes: 636e1970fd7d ("debugobjects: Use global free list in free_object()")
Suggested-by: Waiman Long <longman@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
--
v2: simplify the counting as pointed out by Longman
---
lib/debugobjects.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index faab2c4ea024..105ecfc47d8c 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
*/
if (obj_nr_tofree) {
hlist_move_list(&obj_to_free, &tofree);
+ debug_objects_freed += obj_nr_tofree;
obj_nr_tofree = 0;
}
raw_spin_unlock_irqrestore(&pool_lock, flags);
--
2.9.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] [v2] debugobjects: fix debug_objects_freed accounting
2018-02-22 15:52 [PATCH] [v2] debugobjects: fix debug_objects_freed accounting Arnd Bergmann
@ 2018-02-22 16:02 ` Yang Shi
2018-02-22 16:09 ` Waiman Long
2018-02-22 21:04 ` [tip:core/debugobjects] debugobjects: Fix " tip-bot for Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: Yang Shi @ 2018-02-22 16:02 UTC (permalink / raw)
To: Arnd Bergmann, Thomas Gleixner, Waiman Long; +Cc: Ingo Molnar, linux-kernel
On 2/22/18 7:52 AM, Arnd Bergmann wrote:
> The removal of the batched object freeing has caused the debug_objects_freed
> to become read-only, and the reading is inside an ifdef, so gcc warns that it
> is completely unused without CONFIG_DEBUG_FS:
>
> lib/debugobjects.c:71:14: error: 'debug_objects_freed' defined but not used [-Werror=unused-variable]
>
> Assuming we are still interested in this number, this adds back code to
> keep track of the freed objects.
>
> Fixes: 636e1970fd7d ("debugobjects: Use global free list in free_object()")
> Suggested-by: Waiman Long <longman@redhat.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> --
> v2: simplify the counting as pointed out by Longman
Thanks for catching this.
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
> ---
> lib/debugobjects.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/lib/debugobjects.c b/lib/debugobjects.c
> index faab2c4ea024..105ecfc47d8c 100644
> --- a/lib/debugobjects.c
> +++ b/lib/debugobjects.c
> @@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
> */
> if (obj_nr_tofree) {
> hlist_move_list(&obj_to_free, &tofree);
> + debug_objects_freed += obj_nr_tofree;
> obj_nr_tofree = 0;
> }
> raw_spin_unlock_irqrestore(&pool_lock, flags);
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] [v2] debugobjects: fix debug_objects_freed accounting
2018-02-22 15:52 [PATCH] [v2] debugobjects: fix debug_objects_freed accounting Arnd Bergmann
2018-02-22 16:02 ` Yang Shi
@ 2018-02-22 16:09 ` Waiman Long
2018-02-22 21:04 ` [tip:core/debugobjects] debugobjects: Fix " tip-bot for Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: Waiman Long @ 2018-02-22 16:09 UTC (permalink / raw)
To: Arnd Bergmann, Thomas Gleixner, Yang Shi; +Cc: Ingo Molnar, linux-kernel
On 02/22/2018 10:52 AM, Arnd Bergmann wrote:
> The removal of the batched object freeing has caused the debug_objects_freed
> to become read-only, and the reading is inside an ifdef, so gcc warns that it
> is completely unused without CONFIG_DEBUG_FS:
>
> lib/debugobjects.c:71:14: error: 'debug_objects_freed' defined but not used [-Werror=unused-variable]
>
> Assuming we are still interested in this number, this adds back code to
> keep track of the freed objects.
>
> Fixes: 636e1970fd7d ("debugobjects: Use global free list in free_object()")
> Suggested-by: Waiman Long <longman@redhat.com>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
> --
> v2: simplify the counting as pointed out by Longman
> ---
> lib/debugobjects.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/lib/debugobjects.c b/lib/debugobjects.c
> index faab2c4ea024..105ecfc47d8c 100644
> --- a/lib/debugobjects.c
> +++ b/lib/debugobjects.c
> @@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
> */
> if (obj_nr_tofree) {
> hlist_move_list(&obj_to_free, &tofree);
> + debug_objects_freed += obj_nr_tofree;
> obj_nr_tofree = 0;
> }
> raw_spin_unlock_irqrestore(&pool_lock, flags);
Acked-by: Waiman Long <longman@redhat.com>
^ permalink raw reply [flat|nested] 4+ messages in thread
* [tip:core/debugobjects] debugobjects: Fix debug_objects_freed accounting
2018-02-22 15:52 [PATCH] [v2] debugobjects: fix debug_objects_freed accounting Arnd Bergmann
2018-02-22 16:02 ` Yang Shi
2018-02-22 16:09 ` Waiman Long
@ 2018-02-22 21:04 ` tip-bot for Arnd Bergmann
2 siblings, 0 replies; 4+ messages in thread
From: tip-bot for Arnd Bergmann @ 2018-02-22 21:04 UTC (permalink / raw)
To: linux-tip-commits; +Cc: yang.shi, longman, linux-kernel, mingo, hpa, arnd, tglx
Commit-ID: 04148187aa9df3626168f7429d2287997787e387
Gitweb: https://git.kernel.org/tip/04148187aa9df3626168f7429d2287997787e387
Author: Arnd Bergmann <arnd@arndb.de>
AuthorDate: Thu, 22 Feb 2018 16:52:58 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Thu, 22 Feb 2018 22:00:24 +0100
debugobjects: Fix debug_objects_freed accounting
The removal of the batched object freeing has caused the debug_objects_freed
to become read-only, and the reading is inside an ifdef, so gcc warns that it
is completely unused without CONFIG_DEBUG_FS:
lib/debugobjects.c:71:14: error: 'debug_objects_freed' defined but not used [-Werror=unused-variable]
Assuming we are still interested in this number, this adds back code to
keep track of the freed objects.
Fixes: 636e1970fd7d ("debugobjects: Use global free list in free_object()")
Suggested-by: Waiman Long <longman@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Yang Shi <yang.shi@linux.alibaba.com>
Acked-by: Waiman Long <longman@redhat.com>
Link: https://lkml.kernel.org/r/20180222155335.1647466-1-arnd@arndb.de
---
lib/debugobjects.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index faab2c4..105ecfc 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -233,6 +233,7 @@ static void free_obj_work(struct work_struct *work)
*/
if (obj_nr_tofree) {
hlist_move_list(&obj_to_free, &tofree);
+ debug_objects_freed += obj_nr_tofree;
obj_nr_tofree = 0;
}
raw_spin_unlock_irqrestore(&pool_lock, flags);
^ permalink raw reply related [flat|nested] 4+ messages in thread
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2018-02-22 15:52 [PATCH] [v2] debugobjects: fix debug_objects_freed accounting Arnd Bergmann
2018-02-22 16:02 ` Yang Shi
2018-02-22 16:09 ` Waiman Long
2018-02-22 21:04 ` [tip:core/debugobjects] debugobjects: Fix " tip-bot for Arnd Bergmann
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