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powerpc/spinlocks: Include correct header for static key 

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: 656c21d6af ("powerpc/shared: Use static key to detect shared processor")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Reviewed-by: Srikar Dronamraju <srikar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191223133147.129983-1-Jason@zx2c4.com
This commit is contained in:
Jason A. Donenfeld 2019-12-23 14:31:47 +01:00 committed by Michael Ellerman
parent 91a063c956
commit 6da3eced8c
1 changed files with 1 additions and 0 deletions
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arch/powerpc/include/asm/spinlock.h
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@ -15,6 +15,7 @@
*
* (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>