From: Pavel Tatashin <pasha.tatashin@oracle.com>
To: x86@kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com,
peterz@infradead.org, tglx@linutronix.de, hpa@zytor.com
Subject: [v1 9/9] x86/tsc: use tsc early
Date: Wed, 22 Mar 2017 16:24:25 -0400 [thread overview]
Message-ID: <1490214265-899964-10-git-send-email-pasha.tatashin@oracle.com> (raw)
In-Reply-To: <1490214265-899964-1-git-send-email-pasha.tatashin@oracle.com>
Call tsc_early_init() to initialize early boot time stamps functionality on
the supported x86 platforms, and call tsc_early_fini() to finish this
feature after permanent tsc has been initialized.
Signed-off-by: Pavel Tatashin <pasha.tatashin@oracle.com>
---
arch/x86/kernel/head64.c | 1 +
arch/x86/kernel/time.c | 1 +
2 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/head64.c b/arch/x86/kernel/head64.c
index b5785c1..1068a56 100644
--- a/arch/x86/kernel/head64.c
+++ b/arch/x86/kernel/head64.c
@@ -157,6 +157,7 @@ asmlinkage __visible void __init x86_64_start_kernel(char * real_mode_data)
clear_bss();
clear_page(init_level4_pgt);
+ tsc_early_init();
kasan_early_init();
diff --git a/arch/x86/kernel/time.c b/arch/x86/kernel/time.c
index d39c091..2d691eb 100644
--- a/arch/x86/kernel/time.c
+++ b/arch/x86/kernel/time.c
@@ -85,6 +85,7 @@ static __init void x86_late_time_init(void)
{
x86_init.timers.timer_init();
tsc_init();
+ tsc_early_fini();
}
/*
--
1.7.1
next prev parent reply other threads:[~2017-03-22 20:20 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-22 20:24 [v1 0/9] Early boot time stamps for x86 Pavel Tatashin
2017-03-22 20:24 ` [v1 1/9] sched/clock: broken stable to unstable transfer Pavel Tatashin
2017-03-27 10:27 ` [tip:sched/urgent] sched/clock: Fix " tip-bot for Pavel Tatashin
2017-03-22 20:24 ` [v1 2/9] sched/clock: interface to allow timestamps early in boot Pavel Tatashin
2017-03-22 20:24 ` [v1 3/9] x86/cpu: determining x86 vendor early Pavel Tatashin
2017-03-22 20:24 ` [v1 4/9] x86/tsc: early MSR-based CPU/TSC frequency discovery Pavel Tatashin
2017-03-22 20:24 ` [v1 5/9] x86/tsc: disable early messages from quick_pit_calibrate Pavel Tatashin
2017-03-22 20:24 ` [v1 6/9] x86/tsc: use cpuid to determine TSC frequency Pavel Tatashin
2017-03-22 20:24 ` [v1 7/9] x86/tsc: use cpuid to determine CPU frequency Pavel Tatashin
2017-03-22 20:24 ` [v1 8/9] x86/tsc: tsc early Pavel Tatashin
2017-03-24 5:38 ` kbuild test robot
2017-03-22 20:24 ` Pavel Tatashin [this message]
2017-03-22 20:27 ` [v1 0/9] Early boot time stamps for x86 Peter Zijlstra
2017-03-23 0:02 ` Pasha Tatashin
2017-03-22 20:28 ` Peter Zijlstra
2017-03-22 23:59 ` Pasha Tatashin
2017-03-23 10:56 ` Thomas Gleixner
2017-03-23 14:39 ` Pasha Tatashin
2017-03-23 18:40 ` Thomas Gleixner
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