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authorPaul Murphy <murphyp@linux.vnet.ibm.com>2015-08-27 09:48:04 -0500
committerTulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>2015-10-27 17:27:41 -0200
commit72f1463df85a522bfd1568e47bd81371522ee358 (patch)
treea257dcbec150b619574c29326f89ee10d013891f /ChangeLog
parent76c5ae00284d98f1994434c570bdcde9dbc6b49e (diff)
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powerpc: Fix usage of elision transient failure adapt param
The skip_lock_out_of_tbegin_retries adaptive parameter was
not being used correctly, nor as described.  This prevents
a fallback for all users of the lock if a transient abort
occurs within the accepted number of retries.

	[BZ #19174]
	* sysdeps/powerpc/nptl/elide.h (__elide_lock): Fix usage of
	.skip_lock_out_of_tbegin_retries.
	* sysdeps/unix/sysv/linux/powerpc/elision-lock.c
	(__lll_lock_elision): Likewise, and respect a value of
	try_tbegin <= 0.
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diff --git a/ChangeLog b/ChangeLog
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--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2015-10-27  Paul E. Murphy  <murphyp@linux.vnet.ibm.com>
+
+	[BZ #19174]
+	* sysdeps/powerpc/nptl/elide.h (__elide_lock): Fix usage of
+	.skip_lock_out_of_tbegin_retries.
+	* sysdeps/unix/sysv/linux/powerpc/elision-lock.c
+	(__lll_lock_elision): Likewise, and respect a value of
+	try_tbegin <= 0.
+
 2015-10-27  Carlos Eduardo Seo  <cseo@linux.vnet.ibm.com>
 
 	* elf/dl-support.c (_dl_aux_init): Added AT_PLATFORM to the case