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From: rmk+kernel@armlinux.org.uk (Russell King)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 4/4] ARM: enable LD_DEAD_CODE_DATA_ELIMINATION
Date: Tue, 06 Nov 2018 13:40:25 +0000	[thread overview]
Message-ID: <E1gK1aj-0000p7-Ic@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <20181106133935.GB30658@n2100.armlinux.org.uk>

Enable LD_DEAD_CODE_DATA_ELIMINATION, which allows functions that are
not called to be eliminated from the final kernel image.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 arch/arm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 91be74d8df65..f7f65d0d5a05 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -82,6 +82,7 @@ config ARM
 	select HAVE_KERNEL_XZ
 	select HAVE_KPROBES if !XIP_KERNEL && !CPU_ENDIAN_BE32 && !CPU_V7M
 	select HAVE_KRETPROBES if (HAVE_KPROBES)
+	select HAVE_LD_DEAD_CODE_DATA_ELIMINATION if !FUNCTION_TRACER
 	select HAVE_MOD_ARCH_SPECIFIC
 	select HAVE_NMI
 	select HAVE_OPROFILE if (HAVE_PERF_EVENTS)
-- 
2.7.4

      parent reply	other threads:[~2018-11-06 13:40 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-11-06 13:39 [PATCH 0/4] Enable deadcode elimination at link time Russell King - ARM Linux
2018-11-06 13:39 ` Russell King - ARM Linux
2018-11-06 13:40 ` [PATCH 1/4] EFI stub: remove -fdata-sections Russell King
2018-11-06 13:40   ` Russell King
2018-11-06 14:11   ` Ard Biesheuvel
2018-11-06 14:11     ` Ard Biesheuvel
2018-11-06 14:21     ` Russell King - ARM Linux
2018-11-06 14:21       ` Russell King - ARM Linux
2018-11-06 14:22       ` Ard Biesheuvel
2018-11-06 14:22         ` Ard Biesheuvel
2018-11-06 13:40 ` [PATCH 2/4] ARM: mark critical data with KEEP() Russell King
2018-11-06 13:40 ` [PATCH 3/4] ARM: merge -fdata-sections BSS data to .bss section Russell King
2018-11-06 14:08   ` Ard Biesheuvel
2018-11-06 14:10     ` Russell King - ARM Linux
2018-11-06 14:13       ` Ard Biesheuvel
2018-11-06 14:29         ` Russell King - ARM Linux
2018-11-06 14:39           ` Ard Biesheuvel
2018-11-06 14:45             ` Russell King - ARM Linux
2018-11-06 15:18               ` Ard Biesheuvel
2018-11-06 16:06                 ` Russell King - ARM Linux
2018-11-06 16:14                   ` Ard Biesheuvel
2018-11-06 13:40 ` Russell King [this message]

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