This is a note to let you know that I've just added the patch titled
powerpc/spinlocks: Include correct header for static key
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
powerpc-spinlocks-include-correct-header-for-static-key.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 6da3eced8c5f3b03340b0c395bacd552c4d52411 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@xxxxxxxxx>
Date: Mon, 23 Dec 2019 14:31:47 +0100
Subject: powerpc/spinlocks: Include correct header for static key
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From: Jason A. Donenfeld <Jason@xxxxxxxxx>
commit 6da3eced8c5f3b03340b0c395bacd552c4d52411 upstream.
Recently, the spinlock implementation grew a static key optimization,
but the jump_label.h header include was left out, leading to build
errors:
linux/arch/powerpc/include/asm/spinlock.h:44:7: error: implicit declaration of function ‘static_branch_unlikely’
44 | if (!static_branch_unlikely(&shared_processor))
This commit adds the missing header.
mpe: The build break is only seen with CONFIG_JUMP_LABEL=n.
Fixes: 656c21d6af5d ("powerpc/shared: Use static key to detect shared processor")
Signed-off-by: Jason A. Donenfeld <Jason@xxxxxxxxx>
Reviewed-by: Srikar Dronamraju <srikar@xxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20191223133147.129983-1-Jason@xxxxxxxxx
Cc: Srikar Dronamraju <srikar@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/include/asm/spinlock.h | 1 +
1 file changed, 1 insertion(+)
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -19,6 +19,7 @@
*
* (the type definitions are in asm/spinlock_types.h)
*/
+#include <linux/jump_label.h>
#include <linux/irqflags.h>
#ifdef CONFIG_PPC64
#include <asm/paca.h>
Patches currently in stable-queue which might be from Jason@xxxxxxxxx are
queue-4.19/powerpc-spinlocks-include-correct-header-for-static-key.patch
