diff mbox series

[1/7] memory: Remove the now superfluous sentinel element from ctl_table array

Message ID 20240328-jag-sysctl_remset_misc-v1-1-47c1463b3af2@samsung.com (mailing list archive)
State New
Headers show
Series [1/7] memory: Remove the now superfluous sentinel element from ctl_table array | expand

Commit Message

Joel Granados via B4 Relay March 28, 2024, 3:57 p.m. UTC
From: Joel Granados <j.granados@samsung.com>

This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which will
reduce the overall build time size of the kernel and run time memory
bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)

Remove sentinel from all files under mm/ that register a sysctl table.

Signed-off-by: Joel Granados <j.granados@samsung.com>
---
 mm/compaction.c      | 1 -
 mm/hugetlb.c         | 1 -
 mm/hugetlb_vmemmap.c | 1 -
 mm/memory-failure.c  | 1 -
 mm/oom_kill.c        | 1 -
 mm/page-writeback.c  | 1 -
 mm/page_alloc.c      | 1 -
 7 files changed, 7 deletions(-)

Comments

Muchun Song April 1, 2024, 3:21 a.m. UTC | #1
> On Mar 28, 2024, at 23:57, Joel Granados via B4 Relay <devnull+j.granados.samsung.com@kernel.org> wrote:
> 
> From: Joel Granados <j.granados@samsung.com>
> 
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which will
> reduce the overall build time size of the kernel and run time memory
> bloat by ~64 bytes per sentinel (further information Link :
> https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
> 
> Remove sentinel from all files under mm/ that register a sysctl table.
> 
> Signed-off-by: Joel Granados <j.granados@samsung.com>

Reviewed-by: Muchun Song <muchun.song@linux.dev>

THanks.
Miaohe Lin April 1, 2024, 3:41 a.m. UTC | #2
On 2024/3/28 23:57, Joel Granados via B4 Relay wrote:
> From: Joel Granados <j.granados@samsung.com>
> 
> This commit comes at the tail end of a greater effort to remove the
> empty elements at the end of the ctl_table arrays (sentinels) which will
> reduce the overall build time size of the kernel and run time memory
> bloat by ~64 bytes per sentinel (further information Link :
> https://lore.kernel.org/all/ZO5Yx5JFogGi%2FcBo@bombadil.infradead.org/)
> 
> Remove sentinel from all files under mm/ that register a sysctl table.
> 
> Signed-off-by: Joel Granados <j.granados@samsung.com>

Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>

Thanks.

> ---
>  mm/compaction.c      | 1 -
>  mm/hugetlb.c         | 1 -
>  mm/hugetlb_vmemmap.c | 1 -
>  mm/memory-failure.c  | 1 -
>  mm/oom_kill.c        | 1 -
>  mm/page-writeback.c  | 1 -
>  mm/page_alloc.c      | 1 -
>  7 files changed, 7 deletions(-)
> 
> diff --git a/mm/compaction.c b/mm/compaction.c
> index 807b58e6eb68..e8a047afca22 100644
> --- a/mm/compaction.c
> +++ b/mm/compaction.c
> @@ -3345,7 +3345,6 @@ static struct ctl_table vm_compaction[] = {
>  		.extra1		= SYSCTL_ZERO,
>  		.extra2		= SYSCTL_ONE,
>  	},
> -	{ }
>  };
>  
>  static int __init kcompactd_init(void)
> diff --git a/mm/hugetlb.c b/mm/hugetlb.c
> index 23ef240ba48a..7ac5240a197d 100644
> --- a/mm/hugetlb.c
> +++ b/mm/hugetlb.c
> @@ -5045,7 +5045,6 @@ static struct ctl_table hugetlb_table[] = {
>  		.mode		= 0644,
>  		.proc_handler	= hugetlb_overcommit_handler,
>  	},
> -	{ }
>  };
>  
>  static void hugetlb_sysctl_init(void)
> diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
> index da177e49d956..b9a55322e52c 100644
> --- a/mm/hugetlb_vmemmap.c
> +++ b/mm/hugetlb_vmemmap.c
> @@ -679,7 +679,6 @@ static struct ctl_table hugetlb_vmemmap_sysctls[] = {
>  		.mode		= 0644,
>  		.proc_handler	= proc_dobool,
>  	},
> -	{ }
>  };
>  
>  static int __init hugetlb_vmemmap_init(void)
> diff --git a/mm/memory-failure.c b/mm/memory-failure.c
> index 9349948f1abf..6a112f9ecf91 100644
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -141,7 +141,6 @@ static struct ctl_table memory_failure_table[] = {
>  		.extra1		= SYSCTL_ZERO,
>  		.extra2		= SYSCTL_ONE,
>  	},
> -	{ }
>  };
>  
>  /*
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index 8d6a207c3c59..4d7a0004df2c 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -724,7 +724,6 @@ static struct ctl_table vm_oom_kill_table[] = {
>  		.mode		= 0644,
>  		.proc_handler	= proc_dointvec,
>  	},
> -	{}
>  };
>  #endif
>  
> diff --git a/mm/page-writeback.c b/mm/page-writeback.c
> index 3e19b87049db..fba324e1a010 100644
> --- a/mm/page-writeback.c
> +++ b/mm/page-writeback.c
> @@ -2291,7 +2291,6 @@ static struct ctl_table vm_page_writeback_sysctls[] = {
>  		.mode		= 0644,
>  		.proc_handler	= proc_dointvec_jiffies,
>  	},
> -	{}
>  };
>  #endif
>  
> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
> index 14d39f34d336..8b9820620fe3 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6211,7 +6211,6 @@ static struct ctl_table page_alloc_sysctl_table[] = {
>  		.extra2		= SYSCTL_ONE_HUNDRED,
>  	},
>  #endif
> -	{}
>  };
>  
>  void __init page_alloc_sysctl_init(void)
>
diff mbox series

Patch

diff --git a/mm/compaction.c b/mm/compaction.c
index 807b58e6eb68..e8a047afca22 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -3345,7 +3345,6 @@  static struct ctl_table vm_compaction[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{ }
 };
 
 static int __init kcompactd_init(void)
diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 23ef240ba48a..7ac5240a197d 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -5045,7 +5045,6 @@  static struct ctl_table hugetlb_table[] = {
 		.mode		= 0644,
 		.proc_handler	= hugetlb_overcommit_handler,
 	},
-	{ }
 };
 
 static void hugetlb_sysctl_init(void)
diff --git a/mm/hugetlb_vmemmap.c b/mm/hugetlb_vmemmap.c
index da177e49d956..b9a55322e52c 100644
--- a/mm/hugetlb_vmemmap.c
+++ b/mm/hugetlb_vmemmap.c
@@ -679,7 +679,6 @@  static struct ctl_table hugetlb_vmemmap_sysctls[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dobool,
 	},
-	{ }
 };
 
 static int __init hugetlb_vmemmap_init(void)
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 9349948f1abf..6a112f9ecf91 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -141,7 +141,6 @@  static struct ctl_table memory_failure_table[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{ }
 };
 
 /*
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 8d6a207c3c59..4d7a0004df2c 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -724,7 +724,6 @@  static struct ctl_table vm_oom_kill_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-	{}
 };
 #endif
 
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 3e19b87049db..fba324e1a010 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -2291,7 +2291,6 @@  static struct ctl_table vm_page_writeback_sysctls[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
-	{}
 };
 #endif
 
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 14d39f34d336..8b9820620fe3 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -6211,7 +6211,6 @@  static struct ctl_table page_alloc_sysctl_table[] = {
 		.extra2		= SYSCTL_ONE_HUNDRED,
 	},
 #endif
-	{}
 };
 
 void __init page_alloc_sysctl_init(void)