[tip: ras/core] x86/mce: Get rid of cpu_missing

[tip-bot2 for Zhaolong Zhang]

The following commit has been merged into the ras/core branch of tip:

Commit-ID:     2322b532ad9043336f36ba2634ab3620d5d5b4f5
Gitweb:        https://git.kernel.org/tip/2322b532ad9043336f36ba2634ab3620d5d5b4f5
Author:        Zhaolong Zhang <zhangzl2013@xxxxxxx>
AuthorDate:    Tue, 09 Nov 2021 19:23:45 +08:00
Committer:     Borislav Petkov <bp@xxxxxxx>
CommitterDate: Wed, 17 Nov 2021 15:32:31 +01:00

x86/mce: Get rid of cpu_missing

Get rid of cpu_missing because

  7bb39313cd62 ("x86/mce: Make mce_timed_out() identify holdout CPUs")

provides a more detailed message about which CPUs are missing.

Suggested-by: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Zhaolong Zhang <zhangzl2013@xxxxxxx>
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
Link: https://lkml.kernel.org/r/20211109112345.2673403-1-zhangzl2013@xxxxxxx
---
 arch/x86/kernel/cpu/mce/core.c | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c
index 6ed3653..30de00f 100644
--- a/arch/x86/kernel/cpu/mce/core.c
+++ b/arch/x86/kernel/cpu/mce/core.c
@@ -99,7 +99,6 @@ struct mca_config mca_cfg __read_mostly = {
 
 static DEFINE_PER_CPU(struct mce, mces_seen);
 static unsigned long mce_need_notify;
-static int cpu_missing;
 
 /*
  * MCA banks polled by the period polling timer for corrected events.
@@ -314,8 +313,6 @@ static void mce_panic(const char *msg, struct mce *final, char *exp)
 		if (!apei_err)
 			apei_err = apei_write_mce(final);
 	}
-	if (cpu_missing)
-		pr_emerg(HW_ERR "Some CPUs didn't answer in synchronization\n");
 	if (exp)
 		pr_emerg(HW_ERR "Machine check: %s\n", exp);
 	if (!fake_panic) {
@@ -891,7 +888,6 @@ static int mce_timed_out(u64 *t, const char *msg)
 					 cpumask_pr_args(&mce_missing_cpus));
 			mce_panic(msg, NULL, NULL);
 		}
-		cpu_missing = 1;
 		return 1;
 	}
 	*t -= SPINUNIT;
@@ -2702,7 +2698,6 @@ struct dentry *mce_get_debugfs_dir(void)
 
 static void mce_reset(void)
 {
-	cpu_missing = 0;
 	atomic_set(&mce_fake_panicked, 0);
 	atomic_set(&mce_executing, 0);
 	atomic_set(&mce_callin, 0);