linux-kernel - [tip: smp/core] smp: Make __smp_processor

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Date: Mon, 19 Feb 2024 17:16:03 -0000
From: "tip-bot2 for Alexey Dobriyan" <tip-bot2@...utronix.de>
To: linux-tip-commits@...r.kernel.org
Cc: Alexey Dobriyan <adobriyan@...il.com>,
 Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
 linux-kernel@...r.kernel.org
Subject: [tip: smp/core] smp: Make __smp_processor_id() 0-argument macro

The following commit has been merged into the smp/core branch of tip:

Commit-ID:     b57b4126dd3bb69db876ae7b271307ab7e0458b9
Gitweb:        https://git.kernel.org/tip/b57b4126dd3bb69db876ae7b271307ab7e0458b9
Author:        Alexey Dobriyan <adobriyan@...il.com>
AuthorDate:    Mon, 05 Feb 2024 12:39:30 +03:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Mon, 19 Feb 2024 18:05:47 +01:00

smp: Make __smp_processor_id() 0-argument macro

smp_processor_id family of macros never accepted any arguments.

	#define __smp_processor_id(x)

works by accident (see C99 6.10.3 §4). __smp_processor_id() gets
1 (empty) argument and passes it down to raw_smp_processor_id()
which doesn't accept arguments.

Signed-off-by: Alexey Dobriyan <adobriyan@...il.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/0037d1f2-8153-4b33-b43e-f4b6ecd710ac@p183

---
 include/linux/smp.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/smp.h b/include/linux/smp.h
index e87520d..cc51700 100644
--- a/include/linux/smp.h
+++ b/include/linux/smp.h
@@ -261,7 +261,7 @@ static inline int get_boot_cpu_id(void)
  * regular asm read for the stable.
  */
 #ifndef __smp_processor_id
-#define __smp_processor_id(x) raw_smp_processor_id(x)
+#define __smp_processor_id() raw_smp_processor_id()
 #endif
 
 #ifdef CONFIG_DEBUG_PREEMPT