diff options
| author | Gratian Crisan <gratian.crisan@ni.com> | 2014-10-27 22:45:43 +0000 |
|---|---|---|
| committer | Joseph Myers <joseph@codesourcery.com> | 2014-10-27 22:45:43 +0000 |
| commit | 03d41216fe09fc71a2750946af8fe2892bf4feb5 (patch) | |
| tree | ae838a6041d628e440af1903b7b3bb6ba117e5ad /sysdeps | |
| parent | a4b3624d20e90e8255fb82a83ff40e9e178e0aef (diff) | |
| download | glibc-03d41216fe09fc71a2750946af8fe2892bf4feb5.tar.gz glibc-03d41216fe09fc71a2750946af8fe2892bf4feb5.tar.xz glibc-03d41216fe09fc71a2750946af8fe2892bf4feb5.zip | |
arm: Re-enable PI futex support for ARM kernels >= 3.14.3
ARM linux kernels before 3.14.3 may or may not support futex_atomic_cmpxchg_inatomic depending on the kernel configuration (e.g. CONFIG_CPU_USE_DOMAINS && CONFIG_SMP configuration was not supported) Starting with 3.14.3 the linux kernel unconditionally enables support for ARM, and this re-enables the relevant __ASSUME_* macros. Tested on ARM both with kernels >= 3.14.3 and older kernels. * sysdeps/unix/sysv/linux/arm/kernel-features.h [__LINUX_KERNEL_VERSION >= 0x030E03] (__ASSUME_FUTEX_LOCK_PI): Do not undefine. [__LINUX_KERNEL_VERSION >= 0x030E03] (__ASSUME_REQUEUE_PI): Likewise. [__LINUX_KERNEL_VERSION >= 0x030E03] (__ASSUME_SET_ROBUST_LIST): Likewise.
Diffstat (limited to 'sysdeps')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/kernel-features.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/kernel-features.h b/sysdeps/unix/sysv/linux/arm/kernel-features.h index e755741de6..84d9e9d7aa 100644 --- a/sysdeps/unix/sysv/linux/arm/kernel-features.h +++ b/sysdeps/unix/sysv/linux/arm/kernel-features.h @@ -34,9 +34,11 @@ #include_next <kernel-features.h> -/* The ARM kernel may or may not support +/* The ARM kernel before 3.14.3 may or may not support futex_atomic_cmpxchg_inatomic, depending on kernel configuration. */ -#undef __ASSUME_FUTEX_LOCK_PI -#undef __ASSUME_REQUEUE_PI -#undef __ASSUME_SET_ROBUST_LIST +#if __LINUX_KERNEL_VERSION < 0x030E03 +# undef __ASSUME_FUTEX_LOCK_PI +# undef __ASSUME_REQUEUE_PI +# undef __ASSUME_SET_ROBUST_LIST +#endif |