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| author | Florian Weimer <fweimer@redhat.com> | 2021-02-04 15:00:20 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2021-02-04 15:00:20 +0100 |
| commit | c4ad832276f4dadfa40904109b26a521468f66bc (patch) | |
| tree | e10f9d2f3beff3457f57c5cdabc2dafd9e283041 /sysdeps/nptl/lowlevellock-futex.h | |
| parent | 5d5d71b898b35331f68b582a590bb27d3eb701e7 (diff) | |
| download | glibc-c4ad832276f4dadfa40904109b26a521468f66bc.tar.gz glibc-c4ad832276f4dadfa40904109b26a521468f66bc.tar.xz glibc-c4ad832276f4dadfa40904109b26a521468f66bc.zip | |
nptl: Remove private futex optimization [BZ #27304]
It is effectively used, unexcept for pthread_cond_destroy, where we do
not want it; see bug 27304. The internal locks do not support a
process-shared mode.
This fixes commit dc6cfdc934db9997c33728082d63552b9eee4563 ("nptl:
Move pthread_cond_destroy implementation into libc").
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/nptl/lowlevellock-futex.h')
| -rw-r--r-- | sysdeps/nptl/lowlevellock-futex.h | 14 |
1 files changed, 1 insertions, 13 deletions
diff --git a/sysdeps/nptl/lowlevellock-futex.h b/sysdeps/nptl/lowlevellock-futex.h index ecb729da6b..ca96397a4a 100644 --- a/sysdeps/nptl/lowlevellock-futex.h +++ b/sysdeps/nptl/lowlevellock-futex.h @@ -50,20 +50,8 @@ #define LLL_SHARED FUTEX_PRIVATE_FLAG #ifndef __ASSEMBLER__ - -# if IS_IN (libc) || IS_IN (rtld) -/* In libc.so or ld.so all futexes are private. */ -# define __lll_private_flag(fl, private) \ - ({ \ - /* Prevent warnings in callers of this macro. */ \ - int __lll_private_flag_priv __attribute__ ((unused)); \ - __lll_private_flag_priv = (private); \ - ((fl) | FUTEX_PRIVATE_FLAG); \ - }) -# else -# define __lll_private_flag(fl, private) \ +# define __lll_private_flag(fl, private) \ (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) -# endif # define lll_futex_syscall(nargs, futexp, op, ...) \ ({ \ |