linux-kernel - [PATCH 4/4] kdump: reduce unnecessary parameters of parse_crashkernel

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Message-ID: <20211225072327.1807-5-thunder.leizhen@huawei.com>
Date:   Sat, 25 Dec 2021 15:23:27 +0800
From:   Zhen Lei <thunder.leizhen@...wei.com>
To:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        <x86@...nel.org>, "H . Peter Anvin" <hpa@...or.com>,
        <linux-kernel@...r.kernel.org>, Dave Young <dyoung@...hat.com>,
        Baoquan He <bhe@...hat.com>, Vivek Goyal <vgoyal@...hat.com>,
        Eric Biederman <ebiederm@...ssion.com>,
        <kexec@...ts.infradead.org>,
        Catalin Marinas <catalin.marinas@....com>,
        "Will Deacon" <will@...nel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        <devicetree@...r.kernel.org>, Jonathan Corbet <corbet@....net>,
        <linux-doc@...r.kernel.org>
CC:     Zhen Lei <thunder.leizhen@...wei.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Feng Zhou <zhoufeng.zf@...edance.com>,
        Kefeng Wang <wangkefeng.wang@...wei.com>,
        Chen Zhou <dingguo.cz@...group.com>,
        "John Donnelly" <John.p.donnelly@...cle.com>
Subject: [PATCH 4/4] kdump: reduce unnecessary parameters of parse_crashkernel_{high|low}()

Delete confusing parameters 'system_ram' and 'crash_base' of
parse_crashkernel_{high|low}(), they are only needed by the case of
"crashkernel=X@[offset]".

Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
 kernel/crash_core.c | 21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

diff --git a/kernel/crash_core.c b/kernel/crash_core.c
index 97001820396295e..0ebf5efce3119c5 100644
--- a/kernel/crash_core.c
+++ b/kernel/crash_core.c
@@ -278,20 +278,20 @@ int __init parse_crashkernel(char *cmdline,
 }
 
 static int __init parse_crashkernel_high(char *cmdline,
-			     unsigned long long system_ram,
-			     unsigned long long *crash_size,
-			     unsigned long long *crash_base)
+					 unsigned long long *crash_size)
 {
-	return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base,
+	unsigned long long base;
+
+	return __parse_crashkernel(cmdline, 0, crash_size, &base,
 				"crashkernel=", suffix_tbl[SUFFIX_HIGH]);
 }
 
 static int __init parse_crashkernel_low(char *cmdline,
-			     unsigned long long system_ram,
-			     unsigned long long *crash_size,
-			     unsigned long long *crash_base)
+					unsigned long long *crash_size)
 {
-	return __parse_crashkernel(cmdline, system_ram, crash_size, crash_base,
+	unsigned long long base;
+
+	return __parse_crashkernel(cmdline, 0, crash_size, &base,
 				"crashkernel=", suffix_tbl[SUFFIX_LOW]);
 }
 
@@ -310,12 +310,11 @@ int __init parse_crashkernel_high_low(char *cmdline,
 				      unsigned long long *low_size)
 {
 	int ret;
-	unsigned long long base;
 
 	BUG_ON(!high_size || !low_size);
 
 	/* crashkernel=X,high */
-	ret = parse_crashkernel_high(cmdline, 0, high_size, &base);
+	ret = parse_crashkernel_high(cmdline, high_size);
 	if (ret)
 		return ret;
 
@@ -323,7 +322,7 @@ int __init parse_crashkernel_high_low(char *cmdline,
 		return -EINVAL;
 
 	/* crashkernel=Y,low */
-	ret = parse_crashkernel_low(cmdline, 0, low_size, &base);
+	ret = parse_crashkernel_low(cmdline, low_size);
 	if (ret)
 		*low_size = -1;
 
-- 
2.25.1