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Re: [media] winbond-cir: Move a variable assignment in wbcir_tx()

From SF Markus Elfring <elfring@users.sourceforge.net>
Newsgroups linux.kernel
Subject Re: [media] winbond-cir: Move a variable assignment in wbcir_tx()
Date 2016-10-19 16:20 +0200
Message-ID <stZSQ-2nd-137@gated-at.bofh.it> (permalink)
References (1 earlier) <ss99U-JJ-29@gated-at.bofh.it> <qEuGl-43C-5@gated-at.bofh.it> <ss99T-JJ-1@gated-at.bofh.it> <stZSQ-2nd-141@gated-at.bofh.it> <stZSQ-2nd-143@gated-at.bofh.it>
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>> * How do you think about to avoid a variable assignment in case
>> that this memory allocation failed anyhow?
> 
> There is no memory allocation that can fail at this point.

Do you really know the failure probability for a call of the
function "kmalloc" (within the function "wbcir_tx") under all
possible run time situations?


>> * Do you care for data access locality?
> 
> Not unless you can show measurable performance improvements?

Did any software developer (before me) dare anything in this direction?

Regards,
Markus

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[PATCH 0/5] [media] winbond-cir: Fine-tuning for four function  implementations SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
  [PATCH 2/5] [media] winbond-cir: Move a variable assignment in  wbcir_tx() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
    Re: [PATCH 2/5] [media] winbond-cir: Move a variable assignment  in wbcir_tx() "David Härdeman" <david@hardeman.nu> - 2016-10-19 17:40 +0200
      Re: [media] winbond-cir: Move a variable assignment in wbcir_tx() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 18:30 +0200
  [PATCH 5/5] [media] winbond-cir: Move a variable assignment in two  functions SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
    Re: [PATCH 5/5] [media] winbond-cir: Move a variable assignment  in two functions "David Härdeman" <david@hardeman.nu> - 2016-10-19 16:30 +0200
  [PATCH 4/5] [media] winbond-cir: One variable and its check less in  wbcir_shutdown() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
    Re: [PATCH 4/5] [media] winbond-cir: One variable and its check less  in wbcir_shutdown() after error detection Sean Young <sean@mess.org> - 2016-10-15 15:40 +0200
      Re: [PATCH 4/5] [media] winbond-cir: One variable and its check less  in wbcir_shutdown() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-15 18:50 +0200
        Re: [PATCH 4/5] [media] winbond-cir: One variable and its check  less in wbcir_shutdown() after error detection "David Härdeman" <david@hardeman.nu> - 2016-10-19 16:30 +0200
          Re: [PATCH 4/5] [media] winbond-cir: One variable and its check less  in wbcir_shutdown() after error detection SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 18:30 +0200
      Re: [PATCH 4/5] [media] winbond-cir: One variable and its check  less in wbcir_shutdown() after error detection "David Härdeman" <david@hardeman.nu> - 2016-10-19 16:30 +0200
  [PATCH 1/5] [media] winbond-cir: Use kmalloc_array() in wbcir_tx() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
    Re: [PATCH 1/5] [media] winbond-cir: Use kmalloc_array() in  wbcir_tx() "David Härdeman" <david@hardeman.nu> - 2016-10-19 17:40 +0200
  [PATCH 3/5] [media] winbond-cir: Move assignments for three variables  in wbcir_shutdown() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-14 13:50 +0200
    Re: [PATCH 3/5] [media] winbond-cir: Move assignments for three  variables in wbcir_shutdown() "David Härdeman" <david@hardeman.nu> - 2016-10-19 16:30 +0200
      Re: [media] winbond-cir: Move assignments for three variables in  wbcir_shutdown() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 16:30 +0200
        Re: [media] winbond-cir: Move assignments for three variables in  wbcir_shutdown() "David Härdeman" <david@hardeman.nu> - 2016-10-19 17:50 +0200
  Re: [media] winbond-cir: Move a variable assignment in two functions SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 16:20 +0200
  Re: [media] winbond-cir: Move a variable assignment in wbcir_tx() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 16:20 +0200
  Re: [media] winbond-cir: Move assignments for three variables in  wbcir_shutdown() SF Markus Elfring <elfring@users.sourceforge.net> - 2016-10-19 16:20 +0200
  Re: [media] winbond-cir: Move a variable assignment in wbcir_tx() "David Härdeman" <david@hardeman.nu> - 2016-10-19 16:30 +0200

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