linux-kernel - [tip:x86/mm] x86/smp: Remove unnecessary initialization of thread

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Date:	Fri, 15 Jul 2016 05:04:31 -0700
From:	tip-bot for Andy Lutomirski <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	bp@...en8.de, mingo@...nel.org, brgerst@...il.com,
	dvlasenk@...hat.com, linux-kernel@...r.kernel.org, luto@...nel.org,
	peterz@...radead.org, jpoimboe@...hat.com, hpa@...or.com,
	torvalds@...ux-foundation.org, tglx@...utronix.de
Subject: [tip:x86/mm] x86/smp: Remove unnecessary initialization of
 thread_info::cpu

Commit-ID:  eb43e8f85fffc1ba535e0362a872101dfe48abe3
Gitweb:     http://git.kernel.org/tip/eb43e8f85fffc1ba535e0362a872101dfe48abe3
Author:     Andy Lutomirski <luto@...nel.org>
AuthorDate: Thu, 14 Jul 2016 13:22:59 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 15 Jul 2016 10:26:31 +0200

x86/smp: Remove unnecessary initialization of thread_info::cpu

It's statically initialized to zero -- no need to dynamically
initialize it to zero as well.

Signed-off-by: Andy Lutomirski <luto@...nel.org>
Cc: Borislav Petkov <bp@...en8.de>
Cc: Brian Gerst <brgerst@...il.com>
Cc: Denys Vlasenko <dvlasenk@...hat.com>
Cc: H. Peter Anvin <hpa@...or.com>
Cc: Josh Poimboeuf <jpoimboe@...hat.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: http://lkml.kernel.org/r/6cf6314dce3051371a913ee19d1b88e29c68c560.1468527351.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/x86/kernel/smpboot.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index fafe8b9..0e91dbe 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -1285,7 +1285,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
 	cpumask_copy(cpu_callin_mask, cpumask_of(0));
 	mb();
 
-	current_thread_info()->cpu = 0;  /* needed? */
 	for_each_possible_cpu(i) {
 		zalloc_cpumask_var(&per_cpu(cpu_sibling_map, i), GFP_KERNEL);
 		zalloc_cpumask_var(&per_cpu(cpu_core_map, i), GFP_KERNEL);