Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'

From	"Luck, Tony" <tony.luck@intel.com>
Newsgroups	linux.kernel
Subject	Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic'
Date	2017-04-13 00:30 +0200
Message-ID	<tvyVX-2js-3@gated-at.bofh.it> (permalink)
References	(5 earlier) <tvxwS-15r-19@gated-at.bofh.it> <tvxQe-1uj-21@gated-at.bofh.it> <tvxQe-1uj-19@gated-at.bofh.it> <tvyjf-1Lt-5@gated-at.bofh.it> <tvyMh-2fe-3@gated-at.bofh.it>
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On Thu, Apr 13, 2017 at 12:16:39AM +0200, Borislav Petkov wrote:
> ... and it is midnight here so I could be talking crap but we probably
> should really split the reporting "chain" into two:

This shouldn't be too painful. Users ask to be put on the chain via
the wrapper:

void mce_register_decode_chain(struct notifier_block *nb)
{
        atomic_inc(&num_notifiers);

        WARN_ON(nb->priority > MCE_PRIO_LOWEST && nb->priority < MCE_PRIO_EDAC);

        atomic_notifier_chain_register(&x86_mce_decoder_chain, nb);
}

We can futz with that and have them specify which chain (or both)
that they want to be added to.

-Tony

Thread

[RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic' Vishal Verma <vishal.l.verma@intel.com> - 2017-04-12 00:50 +0200
  Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-12 11:20 +0200
    Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Vishal Verma <vishal.l.verma@intel.com> - 2017-04-12 22:10 +0200
      Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-12 22:30 +0200
        Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking'  from 'atomic' "Verma, Vishal L" <vishal.l.verma@intel.com> - 2017-04-12 22:30 +0200
          Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from 'atomic' Dan Williams <dan.j.williams@intel.com> - 2017-04-12 23:00 +0200
            Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Thomas Gleixner <tglx@linutronix.de> - 2017-04-12 23:20 +0200
              Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Luck, Tony" <tony.luck@intel.com> - 2017-04-12 23:20 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-12 23:50 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-13 00:20 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Luck, Tony" <tony.luck@intel.com> - 2017-04-13 00:30 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-13 00:30 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-13 13:40 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-13 14:20 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Luck, Tony" <tony.luck@intel.com> - 2017-04-18 18:30 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking'  from 'atomic' "Verma, Vishal L" <vishal.l.verma@intel.com> - 2017-04-21 23:50 +0200
          Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Luck, Tony" <tony.luck@intel.com> - 2017-04-12 23:00 +0200
          Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Borislav Petkov <bp@suse.de> - 2017-04-12 23:20 +0200
            Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' Thomas Gleixner <tglx@linutronix.de> - 2017-04-13 00:00 +0200
              Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-13 00:50 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-13 01:50 +0200
                Re: [RFC PATCH] x86, mce: change the mce notifier to 'blocking' from  'atomic' "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> - 2017-04-13 16:40 +0200
  [tip:ras/urgent] x86/mce: Make the MCE notifier a blocking one tip-bot for Vishal Verma <tipbot@zytor.com> - 2017-04-18 22:30 +0200

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