linux-kernel - [tip:sched/core] cpu/SMT: State SMT is disabled even with nosmt and without "=force"

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Message-ID: <tip-d0e7d14455d41163126afecd0fcce935463cc512@git.kernel.org>
Date:   Fri, 5 Oct 2018 01:29:08 -0700
From:   tip-bot for Borislav Petkov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     mingo@...nel.org, peterz@...radead.org,
        linux-kernel@...r.kernel.org, hpa@...or.com, bp@...e.de,
        tglx@...utronix.de, torvalds@...ux-foundation.org
Subject: [tip:sched/core] cpu/SMT: State SMT is disabled even with nosmt and
 without "=force"

Commit-ID:  d0e7d14455d41163126afecd0fcce935463cc512
Gitweb:     https://git.kernel.org/tip/d0e7d14455d41163126afecd0fcce935463cc512
Author:     Borislav Petkov <bp@...e.de>
AuthorDate: Thu, 4 Oct 2018 19:22:27 +0200
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 5 Oct 2018 10:20:31 +0200

cpu/SMT: State SMT is disabled even with nosmt and without "=force"

When booting with "nosmt=force" a message is issued into dmesg to
confirm that SMT has been force-disabled but such a message is not
issued when only "nosmt" is on the kernel command line.

Fix that.

Signed-off-by: Borislav Petkov <bp@...e.de>
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/20181004172227.10094-1-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 kernel/cpu.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kernel/cpu.c b/kernel/cpu.c
index 0097acec1c71..f1338452d998 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -362,6 +362,7 @@ void __init cpu_smt_disable(bool force)
 		pr_info("SMT: Force disabled\n");
 		cpu_smt_control = CPU_SMT_FORCE_DISABLED;
 	} else {
+		pr_info("SMT: disabled\n");
 		cpu_smt_control = CPU_SMT_DISABLED;
 	}
 }