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| author | Florian Weimer <fweimer@redhat.com> | 2021-02-23 14:59:34 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-02-23 14:59:34 +0100 |
| commit | 5a664d7ae8e42d641a7b4b436987ff67ab483b08 (patch) | |
| tree | d2530831e3613ab86b5f536341304ac8cc98f452 /elf | |
| parent | 597d0267b5c4a925f0175837ec09df9f77e0a250 (diff) | |
| download | glibc-5a664d7ae8e42d641a7b4b436987ff67ab483b08.tar.gz glibc-5a664d7ae8e42d641a7b4b436987ff67ab483b08.tar.xz glibc-5a664d7ae8e42d641a7b4b436987ff67ab483b08.zip | |
nptl: Move elision implementations into libc
The elision interfaces are closely aligned between the targets that implement them, so declare them in the generic <lowlevellock.h> file. Empty .c stubs are provided, so that fewer makefile updates under sysdeps are needed. Also simplify initialization via __libc_early_init. The symbols __lll_clocklock_elision, __lll_lock_elision, __lll_trylock_elision, __lll_unlock_elision, __pthread_force_elision move into libc. For the time being, non-hidden references are used from libpthread to access them, but once that part of libpthread is moved into libc, hidden symbols will be used again. (Hidden references seem desirable to reduce the likelihood of transactions aborts.)
Diffstat (limited to 'elf')
| -rw-r--r-- | elf/libc_early_init.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/elf/libc_early_init.c b/elf/libc_early_init.c index 4755554f12..9b1901a706 100644 --- a/elf/libc_early_init.c +++ b/elf/libc_early_init.c @@ -17,8 +17,10 @@ <https://www.gnu.org/licenses/>. */ #include <ctype.h> +#include <elision-conf.h> #include <libc-early-init.h> #include <libc-internal.h> +#include <lowlevellock.h> #include <sys/single_threaded.h> #ifdef SHARED @@ -37,4 +39,8 @@ __libc_early_init (_Bool initial) #ifdef SHARED __libc_initial = initial; #endif + +#if ENABLE_ELISION_SUPPORT + __lll_elision_init (); +#endif } |