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    Subject[tip: ras/core] x86/mce: Get rid of cpu_missing
    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@126.com>
    AuthorDate: Tue, 09 Nov 2021 19:23:45 +08:00
    Committer: Borislav Petkov <bp@suse.de>
    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@suse.de>
    Signed-off-by: Zhaolong Zhang <zhangzl2013@126.com>
    Signed-off-by: Borislav Petkov <bp@suse.de>
    Link: https://lkml.kernel.org/r/20211109112345.2673403-1-zhangzl2013@126.com
    ---
    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);
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