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Groups > linux.kernel > #1471254

Re: [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier

From Linus Torvalds <torvalds@linux-foundation.org>
Newsgroups linux.kernel
Subject Re: [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier
Date 2016-08-28 01:10 +0200
Message-ID <saUTD-2k2-7@gated-at.bofh.it> (permalink)
References <sa8ci-51E-9@gated-at.bofh.it> <sa8YF-5nC-7@gated-at.bofh.it> <saa4p-6jm-15@gated-at.bofh.it> <saGQF-23P-5@gated-at.bofh.it>
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Yeah, with those small fixes from Ingo, I definitely don't think this
looks hacky at all. This all seems to be exactly what we should always
have done.

The only remaining comment is that I'd make that
lazy_tlb_can_skip_flush() function just use a switch table for the
tlbstate comparisons rather than the repeated conditionals.

I'd love to see the results from Benjamin - maybe it helps a lot, and
maybe it doesn't. But regardless, the patch makes sense to me.

So with the small fixups: Ack.

             Linus

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Thread

[PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-25 21:10 +0200
  Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-25 22:00 +0200
  [PATCH RFC v2] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-25 22:20 +0200
  [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-25 23:10 +0200
    Re: [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier Ingo Molnar <mingo@kernel.org> - 2016-08-27 10:10 +0200
      Re: [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier Linus Torvalds <torvalds@linux-foundation.org> - 2016-08-28 01:10 +0200
        [PATCH RFC v4] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-30 22:00 +0200
          [PATCH RFC v5] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-30 23:10 +0200
        [PATCH RFC v6] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-31 18:40 +0200
          Re: [PATCH RFC v6] x86,mm,sched: make lazy TLB mode even lazier Ingo Molnar <mingo@kernel.org> - 2016-09-08 09:00 +0200
            Re: [PATCH RFC v6] x86,mm,sched: make lazy TLB mode even lazier Benjamin Serebrin <serebrin@google.com> - 2016-09-09 02:20 +0200
              Re: [PATCH RFC v6] x86,mm,sched: make lazy TLB mode even lazier Andy Lutomirski <luto@amacapital.net> - 2016-09-09 06:50 +0200
                Re: [PATCH RFC v6] x86,mm,sched: make lazy TLB mode even lazier Peter Zijlstra <peterz@infradead.org> - 2016-09-09 09:50 +0200
      Re: [PATCH RFC v3] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-29 17:30 +0200
  Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier "H. Peter Anvin" <hpa@zytor.com> - 2016-08-26 00:50 +0200
    Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-29 18:10 +0200
  Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Andy Lutomirski <luto@amacapital.net> - 2016-08-28 10:20 +0200
    Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Rik van Riel <riel@redhat.com> - 2016-08-29 17:10 +0200
      Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Andy Lutomirski <luto@amacapital.net> - 2016-08-30 02:00 +0200
        Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier "H. Peter Anvin" <hpa@zytor.com> - 2016-08-30 03:20 +0200
          Re: [PATCH RFC UGLY] x86,mm,sched: make lazy TLB mode even lazier Andy Lutomirski <luto@amacapital.net> - 2016-08-30 20:30 +0200

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