Stefan Liebler b9579342c6 Remove support for lock elision. ... The support for lock elision was already deprecated with glibc 2.42: commit 77438db8cf "Mark support for lock elision as deprecated." See also discussions: https://sourceware.org/pipermail/libc-alpha/2025-July/168492.html This patch removes the architecture specific support for lock elision for x86, powerpc and s390 by removing the elision-conf.h, elision-conf.c, elision-lock.c, elision-timed.c, elision-unlock.c, elide.h, htm.h/hle.h files. Those generic files are also removed. The architecture specific structures are adjusted and the elision fields are marked as unused. See struct_mutex.h files. Furthermore in struct_rwlock.h, the leftover __rwelision was also removed. Those were originally removed with commit 0377a7fde6 "nptl: Remove rwlock elision definitions" and by chance reintroduced with commit 7df8af43ad "nptl: Add struct_rwlock.h" The common code (e.g. the pthread_mutex-files) are changed back to the time before lock elision was introduced with the x86-support: - commit 1cdbe57948 "Add the low level infrastructure for pthreads lock elision with TSX" - commit b023e4ca99 "Add new internal mutex type flags for elision." - commit 68cc29355f "Add minimal test suite changes for elision enabled kernels" - commit e8c659d74e "Add elision to pthread_mutex_{try,timed,un}lock" - commit 49186d21ef "Disable elision for any pthread_mutexattr_settype call" - commit 1717da59ae "Add a configure option to enable lock elision and disable by default" Elision is removed also from the tunables, the initialization part, the pretty-printers and the manual. Some extra handling in the testsuite is removed as well as the full tst-mutex10 testcase, which tested a race while enabling lock elision. I've also searched the code for "elision", "elide", "transaction" and e.g. cleaned some comments. I've run the testsuite on x86_64 and s390x and run the build-many-glibcs.py script. Thanks to Sachin Monga, this patch is also tested on powerpc. A NEWS entry also mentions the removal. Reviewed-by: Wilco Dijkstra <Wilco.Dijkstra@arm.com>		2025-11-18 14:21:13 +01:00
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nptl	Remove support for lock elision.	2025-11-18 14:21:13 +01:00
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dl-new-hash.h	…
dl-procinfo.c	…
dl-prop.h	…
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float128-abi.h	…
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get-cpuid-feature-leaf.c	…
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hp-timing.h	…
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isa-level.c	…
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libc-start.c	…
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readelflib.c	…
sysdep.h	…
tininess.h	…
tst-cpu-features-cpuinfo-static.c	…
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tst-cpu-features-supports-static.c	…
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tst-get-cpu-features-static.c	…
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tst-gnu2-tls2-x86-noxsave.c	…
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tst-ifunc-isa.h	…
tst-isa-level-1.c	…
tst-isa-level-mod-1-baseline.c	…
tst-isa-level-mod-1-v2.c	…
tst-isa-level-mod-1-v3.c	…
tst-isa-level-mod-1-v4.c	…
tst-isa-level-mod-1.c	…
tst-ldbl-nonnormal-printf.c	…
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tst-memmove-rtm.c	…
tst-memrchr-rtm.c	…
tst-memset-rtm.c	…
tst-setjmp-cet.c	…
tst-stack-align.h	…
tst-strcasecmp-rtm.c	…
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tst-strcpy-rtm.c	…
tst-string-rtm.h	…
tst-strlen-rtm.c	…
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tst-sysconf-cache-linesize-static.c	…
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tst-tls23.c	…
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utmp-size.h	…