diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/kernel-features.h | 5 |
2 files changed, 12 insertions, 0 deletions
@@ -70,6 +70,13 @@ 2002-10-15 Ulrich Drepper <drepper@redhat.com> + * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_VFORK_SYSCALL): + Define for 2.4+ kernels. + + * sysdeps/unix/sysv/linux/i386/vfork.S: Optimize for kernels which + are known to have the vfork syscall. Don't confuse the CPUs + branch prediction unit by jumping to the return address. + * sysdeps/unix/sysv/linux/alpha/fpathconf.c (__fpathconf): Add support for reiserfs and xfs. diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h index a8145e1..0796a8a 100644 --- a/sysdeps/unix/sysv/linux/kernel-features.h +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -214,6 +214,11 @@ # define __ASSUME_SET_THREAD_AREA_SYSCALL 1 #endif +/* The vfork syscall on x86 was definitely available in 2.4. */ +#if __LINUX_KERNEL_VERSION >= 132097 && defined __i386__ +# define __ASSUME_VFORK_SYSCALL 1 +#endif + /* There are an infinite number of PA-RISC kernel versions numbered 2.4.0. But they've not really been released as such. We require and expect the final version here. */ |