[PATCH v3 3/7] arch/x86: Remove now superfluous sentinel elem from ctl_table arrays
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- To: Luis Chamberlain <mcgrof@xxxxxxxxxx>, willy@xxxxxxxxxxxxx, josh@xxxxxxxxxxxxxxxx, Kees Cook <keescook@xxxxxxxxxxxx>, Iurii Zaikin <yzaikin@xxxxxxxxxx>, Heiko Carstens <hca@xxxxxxxxxxxxx>, Vasily Gorbik <gor@xxxxxxxxxxxxx>, Alexander Gordeev <agordeev@xxxxxxxxxxxxx>, Christian Borntraeger <borntraeger@xxxxxxxxxxxxx>, Sven Schnelle <svens@xxxxxxxxxxxxx>, Gerald Schaefer <gerald.schaefer@xxxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxx>, Catalin Marinas <catalin.marinas@xxxxxxx>, Will Deacon <will@xxxxxxxxxx>, Mark Rutland <mark.rutland@xxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Andy Lutomirski <luto@xxxxxxxxxx>, Paul Walmsley <paul.walmsley@xxxxxxxxxx>, Palmer Dabbelt <palmer@xxxxxxxxxxx>, Albert Ou <aou@xxxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Nicholas Piggin <npiggin@xxxxxxxxx>, Christophe Leroy <christophe.leroy@xxxxxxxxxx>, Guo Ren <guoren@xxxxxxxxxx>, Alexey Gladkov <legion@xxxxxxxxxx>
- Subject: [PATCH v3 3/7] arch/x86: Remove now superfluous sentinel elem from ctl_table arrays
- From: Joel Granados via B4 Relay <devnull+j.granados.samsung.com@xxxxxxxxxx>
- Date: Mon, 02 Oct 2023 13:30:38 +0200
- Cc: linux-fsdevel@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linux-riscv@xxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-csky@xxxxxxxxxxxxxxx, Joel Granados <j.granados@xxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>
- In-reply-to: <20231002-jag-sysctl_remove_empty_elem_arch-v3-0-606da2840a7a@samsung.com>
- References: <20231002-jag-sysctl_remove_empty_elem_arch-v3-0-606da2840a7a@samsung.com>
- Reply-to: <j.granados@xxxxxxxxxxx>
From: Joel Granados <j.granados@xxxxxxxxxxx>
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@xxxxxxxxxxxxxxxxxxxxxx/)
Remove sentinel element from sld_sysctl and itmt_kern_table. This
removal is safe because register_sysctl_init and register_sysctl
implicitly use the array size in addition to checking for the sentinel.
Reviewed-by: Ingo Molnar <mingo@xxxxxxxxxx>
Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> # for x86
Signed-off-by: Joel Granados <j.granados@xxxxxxxxxxx>
---
arch/x86/kernel/cpu/intel.c | 1 -
arch/x86/kernel/itmt.c | 1 -
2 files changed, 2 deletions(-)
diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index be4045628fd3..d9bb53f49a4d 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -1016,7 +1016,6 @@ static struct ctl_table sld_sysctls[] = {
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
- {}
};
static int __init sld_mitigate_sysctl_init(void)
diff --git a/arch/x86/kernel/itmt.c b/arch/x86/kernel/itmt.c
index ee4fe8cdb857..9a7c03d47861 100644
--- a/arch/x86/kernel/itmt.c
+++ b/arch/x86/kernel/itmt.c
@@ -74,7 +74,6 @@ static struct ctl_table itmt_kern_table[] = {
.extra1 = SYSCTL_ZERO,
.extra2 = SYSCTL_ONE,
},
- {}
};
static struct ctl_table_header *itmt_sysctl_header;
--
2.30.2
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