37 lines
1.1 KiB
Diff
37 lines
1.1 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Wang Chaox <chaox.m.wang@intel.com>
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Date: Fri, 22 Feb 2019 15:18:23 +0800
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Subject: [PATCH] TSC: Print current tsc value when detected
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It's a critical KPI of system cold-boot time. This patch prints the
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current tsc value which is used to align the kernel time with natural
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time.
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Change-Id: Id3a359d069b26f2b3b2988e7f64af5daf51e0718
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Tracked-On: PKT-1761
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Signed-off-by: Wang Chaox <chaox.m.wang@intel.com>
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---
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arch/x86/kernel/tsc.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
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index 03b7529333a6..fb57e46f4d89 100644
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--- a/arch/x86/kernel/tsc.c
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+++ b/arch/x86/kernel/tsc.c
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@@ -1407,9 +1407,10 @@ static bool __init determine_cpu_tsc_frequencies(bool early)
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(unsigned long)cpu_khz % KHZ);
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if (cpu_khz != tsc_khz) {
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- pr_info("Detected %lu.%03lu MHz TSC",
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+ pr_info("Detected %lu.%03lu MHz TSC, current tsc:%llu",
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(unsigned long)tsc_khz / KHZ,
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- (unsigned long)tsc_khz % KHZ);
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+ (unsigned long)tsc_khz % KHZ,
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+ rdtsc());
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}
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return true;
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}
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--
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https://clearlinux.org
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