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commit 673659263d956f45f1ce0c66900fa7f1129db74a
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Author: Stefan Liebler <stli@linux.vnet.ibm.com>
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Date: Mon May 26 11:14:25 2014 +0200
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Disable lock elision for PTHREAD_MUTEX_NORMAL.
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Index: glibc-2.17-c758a686/nptl/pthread_mutexattr_settype.c
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===================================================================
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--- glibc-2.17-c758a686.orig/nptl/pthread_mutexattr_settype.c
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+++ glibc-2.17-c758a686/nptl/pthread_mutexattr_settype.c
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@@ -32,7 +32,7 @@ __pthread_mutexattr_settype (attr, kind)
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/* Cannot distinguish between DEFAULT and NORMAL. So any settype
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call disables elision for now. */
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- if (kind == PTHREAD_MUTEX_DEFAULT)
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+ if (kind == PTHREAD_MUTEX_NORMAL)
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kind |= PTHREAD_MUTEX_NO_ELISION_NP;
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iattr = (struct pthread_mutexattr *) attr;
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