From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Amit Kucheria <amitk@kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>,
Tony Luck <tony.luck@intel.com>, Zhang Rui <rui.zhang@intel.com>,
linux-pm@vger.kernel.org
Subject: [PATCH v3 1/2] x86/mce: Get rid of mcheck_intel_therm_init()
Date: Mon, 1 Feb 2021 15:27:03 +0100 [thread overview]
Message-ID: <20210201142704.12495-2-bp@alien8.de> (raw)
In-Reply-To: <20210201142704.12495-1-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
Move the APIC_LVTTHMR read which needs to happen on the BSP, to
intel_init_thermal(). One less boot dependency.
No functional changes.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
arch/x86/include/asm/mce.h | 6 ------
arch/x86/kernel/cpu/mce/core.c | 1 -
arch/x86/kernel/cpu/mce/therm_throt.c | 15 ++++-----------
3 files changed, 4 insertions(+), 18 deletions(-)
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 56cdeaac76a0..def9aa5e1fa4 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -304,12 +304,6 @@ extern int (*platform_thermal_package_notify)(__u64 msr_val);
* callback has rate control */
extern bool (*platform_thermal_package_rate_control)(void);
-#ifdef CONFIG_X86_THERMAL_VECTOR
-extern void mcheck_intel_therm_init(void);
-#else
-static inline void mcheck_intel_therm_init(void) { }
-#endif
-
/*
* Used by APEI to report memory error via /dev/mcelog
*/
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index e133ce1e562b..c68e21b4ea0d 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -2178,7 +2178,6 @@ __setup("mce", mcheck_enable);
int __init mcheck_init(void)
{
- mcheck_intel_therm_init();
mce_register_decode_chain(&early_nb);
mce_register_decode_chain(&mce_uc_nb);
mce_register_decode_chain(&mce_default_nb);
diff --git a/arch/x86/kernel/cpu/mce/therm_throt.c b/arch/x86/kernel/cpu/mce/therm_throt.c
index a7cd2d203ced..5b15d7cef1d1 100644
--- a/arch/x86/kernel/cpu/mce/therm_throt.c
+++ b/arch/x86/kernel/cpu/mce/therm_throt.c
@@ -633,17 +633,6 @@ static int intel_thermal_supported(struct cpuinfo_x86 *c)
return 1;
}
-void __init mcheck_intel_therm_init(void)
-{
- /*
- * This function is only called on boot CPU. Save the init thermal
- * LVT value on BSP and use that value to restore APs' thermal LVT
- * entry BIOS programmed later
- */
- if (intel_thermal_supported(&boot_cpu_data))
- lvtthmr_init = apic_read(APIC_LVTTHMR);
-}
-
void intel_init_thermal(struct cpuinfo_x86 *c)
{
unsigned int cpu = smp_processor_id();
@@ -653,6 +642,10 @@ void intel_init_thermal(struct cpuinfo_x86 *c)
if (!intel_thermal_supported(c))
return;
+ /* On the BSP? */
+ if (c == &boot_cpu_data)
+ lvtthmr_init = apic_read(APIC_LVTTHMR);
+
/*
* First check if its enabled already, in which case there might
* be some SMM goo which handles it, so we can't even put a handler
--
2.29.2
next prev parent reply other threads:[~2021-02-01 14:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-01 14:27 [PATCH v3 0/2] Move ...mce/therm_throt.c to drivers/thermal/ Borislav Petkov
2021-02-01 14:27 ` Borislav Petkov [this message]
2021-02-08 11:37 ` [tip: ras/core] x86/mce: Get rid of mcheck_intel_therm_init() tip-bot2 for Borislav Petkov
2021-02-01 14:27 ` [PATCH v3 2/2] thermal: Move therm_throt there from x86/mce Borislav Petkov
2021-02-01 19:10 ` Srinivas Pandruvada
2021-02-02 12:10 ` Borislav Petkov
2021-02-02 18:13 ` Srinivas Pandruvada
2021-02-08 11:37 ` [tip: ras/core] " tip-bot2 for Borislav Petkov
2021-02-01 19:10 ` [PATCH v3 0/2] Move ...mce/therm_throt.c to drivers/thermal/ Srinivas Pandruvada
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