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* [Bug libc/27362] New: rtld: Add dtv_surplus tunable for dtv
@ 2021-02-07  7:28 wangxuszcn at foxmail dot com
  2021-02-07  8:57 ` [Bug libc/27362] " fweimer at redhat dot com
  2021-02-07  8:58 ` [Bug dynamic-link/27362] " fweimer at redhat dot com
  0 siblings, 2 replies; 3+ messages in thread
From: wangxuszcn at foxmail dot com @ 2021-02-07  7:28 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=27362

            Bug ID: 27362
           Summary: rtld: Add dtv_surplus tunable for dtv
           Product: glibc
           Version: 2.34
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: P2
         Component: libc
          Assignee: unassigned at sourceware dot org
          Reporter: wangxuszcn at foxmail dot com
                CC: drepper.fsp at gmail dot com
  Target Milestone: ---

Created attachment 13207
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13207&action=edit
Add dtv_surplus tunable for dtv

rtld: Add dtv_surplus tunable for dtv

DTV_SURPLUS is used to avoid in the most cases expansions of dtv,
default is 14, but sometimes it is not big enough. If we have to
expand the size of dtv, the TLS variable is accessed using
_dl_tlsdesc_dynamic(), which is three times lower than
_dl_tlsdesc_return().

This patch add a new tunable, to adjust dtv surplus conveniently.

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* [Bug libc/27362] rtld: Add dtv_surplus tunable for dtv
  2021-02-07  7:28 [Bug libc/27362] New: rtld: Add dtv_surplus tunable for dtv wangxuszcn at foxmail dot com
@ 2021-02-07  8:57 ` fweimer at redhat dot com
  2021-02-07  8:58 ` [Bug dynamic-link/27362] " fweimer at redhat dot com
  1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2021-02-07  8:57 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=27362

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |fweimer at redhat dot com
  Attachment #13207|application/mbox            |text/plain
          mime type|                            |
  Attachment #13207|0                           |1
           is patch|                            |

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* [Bug dynamic-link/27362] rtld: Add dtv_surplus tunable for dtv
  2021-02-07  7:28 [Bug libc/27362] New: rtld: Add dtv_surplus tunable for dtv wangxuszcn at foxmail dot com
  2021-02-07  8:57 ` [Bug libc/27362] " fweimer at redhat dot com
@ 2021-02-07  8:58 ` fweimer at redhat dot com
  1 sibling, 0 replies; 3+ messages in thread
From: fweimer at redhat dot com @ 2021-02-07  8:58 UTC (permalink / raw)
  To: glibc-bugs

https://sourceware.org/bugzilla/show_bug.cgi?id=27362

Florian Weimer <fweimer at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Flags|                            |security-
          Component|libc                        |dynamic-link

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end of thread, other threads:[~2021-02-07  8:58 UTC | newest]

Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-07  7:28 [Bug libc/27362] New: rtld: Add dtv_surplus tunable for dtv wangxuszcn at foxmail dot com
2021-02-07  8:57 ` [Bug libc/27362] " fweimer at redhat dot com
2021-02-07  8:58 ` [Bug dynamic-link/27362] " fweimer at redhat dot com

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