From: Chen Yucong <slaoub@gmail.com>
To: ak@linux.intel.com
Cc: fengguang.wu@intel.com, n-horiguchi@ah.jp.nec.com,
linux-mm@kvack.org, Chen Yucong <slaoub@gmail.com>
Subject: [PATCH] HWPOISON: Clear a useless global variable in do_machine_check()
Date: Fri, 16 May 2014 14:39:29 +0800 [thread overview]
Message-ID: <1400222369-4473-1-git-send-email-slaoub@gmail.com> (raw)
This patch is just used to remove a useless global variable mce_entry
and relative operations in do_machine_check().
Signed-off-by: Chen Yucong <slaoub@gmail.com>
---
arch/x86/include/asm/mce.h | 2 --
arch/x86/kernel/cpu/mcheck/mce.c | 5 -----
2 files changed, 7 deletions(-)
diff --git a/arch/x86/include/asm/mce.h b/arch/x86/include/asm/mce.h
index 6e4ce2d..958b90f 100644
--- a/arch/x86/include/asm/mce.h
+++ b/arch/x86/include/asm/mce.h
@@ -176,8 +176,6 @@ int mce_available(struct cpuinfo_x86 *c);
DECLARE_PER_CPU(unsigned, mce_exception_count);
DECLARE_PER_CPU(unsigned, mce_poll_count);
-extern atomic_t mce_entry;
-
typedef DECLARE_BITMAP(mce_banks_t, MAX_NR_BANKS);
DECLARE_PER_CPU(mce_banks_t, mce_poll_banks);
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 68317c8..8f520a1 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -60,8 +60,6 @@ static DEFINE_MUTEX(mce_chrdev_read_mutex);
#define SPINUNIT 100 /* 100ns */
-atomic_t mce_entry;
-
DEFINE_PER_CPU(unsigned, mce_exception_count);
struct mce_bank *mce_banks __read_mostly;
@@ -1041,8 +1039,6 @@ void do_machine_check(struct pt_regs *regs, long error_code)
DECLARE_BITMAP(valid_banks, MAX_NR_BANKS);
char *msg = "Unknown";
- atomic_inc(&mce_entry);
-
this_cpu_inc(mce_exception_count);
if (!cfg->banks)
@@ -1172,7 +1168,6 @@ void do_machine_check(struct pt_regs *regs, long error_code)
mce_report_event(regs);
mce_wrmsrl(MSR_IA32_MCG_STATUS, 0);
out:
- atomic_dec(&mce_entry);
sync_core();
}
EXPORT_SYMBOL_GPL(do_machine_check);
--
1.7.10.4
--
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reply other threads:[~2014-05-16 6:41 UTC|newest]
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