linux-kernel - [PATCH 2/3] x86/cpu: Include cpu_detect_cache_sizes in init_intel

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Message-ID: <1525314766-18910-3-git-send-email-davidwang@zhaoxin.com>
Date:   Thu, 3 May 2018 10:32:45 +0800
From:   David Wang <davidwang@...oxin.com>
To:     <tglx@...utronix.de>, <mingo@...hat.com>, <hpa@...or.com>,
        <gregkh@...uxfoundation.org>, <x86@...nel.org>,
        <linux-kernel@...r.kernel.org>
CC:     <brucechang@...-alliance.com>, <cooperyan@...oxin.com>,
        <qiyuanwang@...oxin.com>, <benjaminpan@...tech.com>,
        <lukelin@...cpu.com>, <timguo@...oxin.com>,
        David Wang <davidwang@...oxin.com>
Subject: [PATCH 2/3] x86/cpu: Include cpu_detect_cache_sizes in init_intel_cacheinfo

Clean up the silly cpu_detect_cache_sizes() calling by including the
cpu_detect_cache_sizes() inside the init_intel_cacheinfo(). 

Signed-off-by: David Wang <davidwang@...oxin.com>
---
 arch/x86/kernel/cpu/intel.c           | 8 +-------
 arch/x86/kernel/cpu/intel_cacheinfo.c | 6 ++++++
 2 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c
index f683f7d..56e3259 100644
--- a/arch/x86/kernel/cpu/intel.c
+++ b/arch/x86/kernel/cpu/intel.c
@@ -659,13 +659,7 @@ static void init_intel(struct cpuinfo_x86 *c)
 #endif
 	}
 
-	l2 = init_intel_cacheinfo(c);
-
-	/* Detect legacy cache sizes if init_intel_cacheinfo did not */
-	if (l2 == 0) {
-		cpu_detect_cache_sizes(c);
-		l2 = c->x86_cache_size;
-	}
+	init_intel_cacheinfo(c);
 
 	if (c->cpuid_level > 9) {
 		unsigned eax = cpuid_eax(10);
diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c
index 54d04d5..2a0597c 100644
--- a/arch/x86/kernel/cpu/intel_cacheinfo.c
+++ b/arch/x86/kernel/cpu/intel_cacheinfo.c
@@ -20,6 +20,8 @@
 #include <asm/amd_nb.h>
 #include <asm/smp.h>
 
+#include "cpu.h"
+
 #define LVL_1_INST	1
 #define LVL_1_DATA	2
 #define LVL_2		3
@@ -802,6 +804,10 @@ unsigned int init_intel_cacheinfo(struct cpuinfo_x86 *c)
 
 	c->x86_cache_size = l3 ? l3 : (l2 ? l2 : (l1i+l1d));
 
+	if (!l2) {
+		cpu_detect_cache_sizes(c);
+		l2 = c->x86_cache_size;
+	}
 	return l2;
 }
 
-- 
1.9.1