Commit message (Collapse) | Author | Age | Files | Lines | |
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* | Add elision tunables | Rogerio Alves | 2017-12-05 | 1 | -10/+2 |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds several new tunables to control the behavior of elision on supported platforms[1]. Since elision now depends on tunables, we should always *compile* with elision enabled, and leave the code disabled, but available for runtime selection. This gives us *much* better compile-time testing of the existing code to avoid bit-rot[2]. Tested on ppc, ppc64, ppc64le, s390x and x86_64. [1] This part of the patch was initially proposed by Paul Murphy but was "staled" because the framework have changed since the patch was originally proposed: https://patchwork.sourceware.org/patch/10342/ [2] This part of the patch was inititally proposed as a RFC by Carlos O'Donnell. Make sense to me integrate this on the patch: https://sourceware.org/ml/libc-alpha/2017-05/msg00335.html * elf/dl-tunables.list: Add elision parameters. * manual/tunables.texi: Add entries about elision tunable. * sysdeps/unix/sysv/linux/powerpc/elision-conf.c: Add callback functions to dynamically enable/disable elision. Add multiple callbacks functions to set elision parameters. Deleted __libc_enable_secure check. * sysdeps/unix/sysv/linux/s390/elision-conf.c: Likewise. * sysdeps/unix/sysv/linux/x86/elision-conf.c: Likewise. * configure: Regenerated. * configure.ac: Option enable_lock_elision was deleted. * config.h.in: ENABLE_LOCK_ELISION flag was deleted. * config.make.in: Remove references to enable_lock_elision. * manual/install.texi: Elision configure option was removed. * INSTALL: Regenerated to remove enable_lock_elision. * nptl/Makefile: Disable elision so it can verify error case for destroying a mutex. * sysdeps/powerpc/nptl/elide.h: Cleanup ENABLE_LOCK_ELISION check. Deleted macros for the case when ENABLE_LOCK_ELISION was not defined. * sysdeps/s390/configure: Regenerated. * sysdeps/s390/configure.ac: Remove references to enable_lock_elision.. * nptl/tst-mutex8.c: Deleted all #ifndef ENABLE_LOCK_ELISION from the test. * sysdeps/powerpc/powerpc32/sysdep.h: Deleted all ENABLE_LOCK_ELISION checks. * sysdeps/powerpc/powerpc64/sysdep.h: Likewise. * sysdeps/powerpc/sysdep.h: Likewise. * sysdeps/s390/nptl/bits/pthreadtypes-arch.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/elision-conf.h: Likewise. * sysdeps/unix/sysv/linux/s390/force-elision.h: Likewise. * sysdeps/unix/sysv/linux/s390/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/s390/Makefile: Remove references to enable-lock-elision. Reviewed-by: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com> | ||||
* | Update copyright dates with scripts/update-copyrights. | Joseph Myers | 2017-01-01 | 1 | -1/+1 |
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* | Update copyright dates with scripts/update-copyrights. | Joseph Myers | 2016-01-04 | 1 | -1/+1 |
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* | Update copyright dates with scripts/update-copyrights. | Joseph Myers | 2015-01-02 | 1 | -1/+1 |
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* | Update copyright notices with scripts/update-copyrights | Allan McRae | 2014-01-01 | 1 | -1/+1 |
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* | nptl: tst-mutex8.c: Handle ENOTSUP PI mutex failure | Maciej W. Rozycki | 2013-10-05 | 1 | -2/+10 |
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* | Add minimal test suite changes for elision enabled kernels | Andi Kleen | 2013-07-02 | 1 | -1/+16 |
| | | | | | | tst-mutex5 and 8 test some behaviour not required by POSIX, that elision changes. This changes these tests to not check this when elision is enabled at configure time. | ||||
* | Fix tst-mutexpi8 | Andi Kleen | 2013-05-09 | 1 | -0/+14 |
| | | | | | | 2013-05-09 Andi Kleen <ak@linux.intel.com> * tst-mutex8.c (do_test): Check for ENABLE_PI. | ||||
* | Update copyright notices with scripts/update-copyrights. | Joseph Myers | 2013-01-02 | 1 | -1/+1 |
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* | Replace FSF snail mail address with URLs. | Paul Eggert | 2012-02-09 | 1 | -3/+2 |
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* | Update. | Ulrich Drepper | 2003-06-22 | 1 | -0/+367 |
2003-06-22 Ulrich Drepper <drepper@redhat.com> * pthreadP.h (__pthread_mutex_init_internal): Mark hidden. (__pthread_mutex_lock_internal): Likewise. (__pthread_mutex_unlock_internal): Likewise. (__pthread_mutex_unlock_usercnt): Declare. * pthread_mutex_destroy.c: Always fail if used in any way. * pthread_mutex_init.c: Update comment. * pthread_mutex_lock.c: If NO_INCR is not defined adjust __nusers. * pthread_mutex_timedlock.c: Adjust __nusers. * pthread_mutex_trylock.c: Adjust __nusers. * pthread_mutex_unlock.c: Old code is in __pthread_mutex_unlock_usercnt and public interfaces are wrapper with pass additional parameter. __pthread_mutex_unlock_usercnt does not adjust __nusers if second parameter zero. * tst-mutex8.c: New file. * Makefile (tests): Add tst-mutex8. * sysdeps/pthread/pthread_cond_timedwait.c: Call __pthread_mutex_unlock_usercnt. * sysdeps/pthread/pthread_cond_wait.c: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/i386/i486/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S: Likewise. * sysdeps/unix/sysv/linux/pthread_mutex_cond_lock.c: Define NO_INCR. * sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t): Add __nusers. * sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise. * pthread_mutex_lock.c: Don't store THREAD_ID in __owner, use TID. * pthread_mutex_timedlock.c: Likewise. * pthread_mutex_trylock.c: Adjust __nusers. * pthread_mutex_unlock.c: Compare with TID not THREAD_ID. * tst-mutex9.c: New file. * Makefile (tests): Add tst-mutex9. * sysdeps/i386/tls.h: Remove THREAD_ID definition. * sysdeps/ia64/tls.h: Likewise. * sysdeps/powerpc/tls.h: Likewise. * sysdeps/s390/tls.h: Likewise. * sysdeps/sh/tls.h: Likewise. * sysdeps/x86_64/tls.h: Likewise. * sysdeps/unix/sysv/linux/i386/bits/pthreadtypes.h (pthread_mutex_t): Change type of __owner. * sysdeps/unix/sysv/linux/ia64/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/powerpc/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/s390/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/sh/bits/pthreadtypes.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/bits/pthreadtypes.h: Likewise. |