linux-kernel - [PATCH] powerpc/shared: include correct header for static key

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Date:   Mon, 23 Dec 2019 14:31:47 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     pauld@...hat.com, longman@...hat.com, mpe@...erman.id.au,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Subject: [PATCH] powerpc/shared: 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’ [-Werror=implicit-function-declaration]
   44 |  if (!static_branch_unlikely(&shared_processor))

This commit adds the missing header.

Fixes: 656c21d6af5d ("powerpc/shared: Use static key to detect shared processor")
Cc: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>
Signed-off-by: Jason A. Donenfeld <Jason@...c4.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 1b55fc08f853..860228e917dc 100644
--- a/arch/powerpc/include/asm/spinlock.h
+++ b/arch/powerpc/include/asm/spinlock.h
@@ -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>
-- 
2.24.1