From: "Jason A. Donenfeld" Jason@zx2c4.com
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@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 Cc: Srikar Dronamraju srikar@linux.vnet.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- arch/powerpc/include/asm/spinlock.h | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/include/asm/spinlock.h b/arch/powerpc/include/asm/spinlock.h index bfaf175..3198dde 100644 --- 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>