diff options
Diffstat (limited to 'nptl/init.c')
| -rw-r--r-- | nptl/init.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/nptl/init.c b/nptl/init.c index f67467aa5a..ff81087d0c 100644 --- a/nptl/init.c +++ b/nptl/init.c @@ -276,6 +276,18 @@ __pthread_initialize_minimal_internal (void) #endif set_robust_list_not_avail (); +#ifndef __ASSUME_PRIVATE_FUTEX + /* Private futexes are always used (at least internally) so that + doing the test once this early is beneficial. */ + { + int word; + res = INTERNAL_SYSCALL (futex, err, 3, &word, + FUTEX_WAKE | FUTEX_PRIVATE_FLAG, 1); + if (!INTERNAL_SYSCALL_ERROR_P (res, err)) + THREAD_SETMEM (pd, header.private_futex, FUTEX_PRIVATE_FLAG); + } +#endif + /* Set initial thread's stack block from 0 up to __libc_stack_end. It will be bigger than it actually is, but for unwind.c/pt-longjmp.c purposes this is good enough. */ |