linux-kernel - [tip: x86/apic] x86/apic: Make TSC deadline timer detection message visible

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Message-ID: <159048530494.17951.1301116942468405416.tip-bot2@tip-bot2>
Date:   Tue, 26 May 2020 09:28:24 -0000
From:   "tip-bot2 for Borislav Petkov" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Borislav Petkov <bp@...e.de>, x86 <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [tip: x86/apic] x86/apic: Make TSC deadline timer detection message visible

The following commit has been merged into the x86/apic branch of tip:

Commit-ID:     de308d1815c9e8fe602a958c5c76142ff6501d75
Gitweb:        https://git.kernel.org/tip/de308d1815c9e8fe602a958c5c76142ff6501d75
Author:        Borislav Petkov <bp@...e.de>
AuthorDate:    Mon, 25 May 2020 12:38:39 +02:00
Committer:     Borislav Petkov <bp@...e.de>
CommitterDate: Tue, 26 May 2020 10:54:18 +02:00

x86/apic: Make TSC deadline timer detection message visible

The commit

  c84cb3735fd5 ("x86/apic: Move TSC deadline timer debug printk")

removed the message which said that the deadline timer was enabled.
It added a pr_debug() message which is issued when deadline timer
validation succeeds.

Well, issued only when CONFIG_DYNAMIC_DEBUG is enabled - otherwise
pr_debug() calls get optimized away if DEBUG is not defined in the
compilation unit.

Therefore, make the above message pr_info() so that it is visible in
dmesg.

Signed-off-by: Borislav Petkov <bp@...e.de>
Link: https://lkml.kernel.org/r/20200525104218.27018-1-bp@alien8.de
---
 arch/x86/kernel/apic/apic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index e53dda2..21d2f1d 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2093,7 +2093,7 @@ void __init init_apic_mappings(void)
 	unsigned int new_apicid;
 
 	if (apic_validate_deadline_timer())
-		pr_debug("TSC deadline timer available\n");
+		pr_info("TSC deadline timer available\n");
 
 	if (x2apic_mode) {
 		boot_cpu_physical_apicid = read_apic_id();