about summary refs log tree commit diff
path: root/sysdeps/generic/ldsodefs.h
diff options
context:
space:
mode:
authorSiddhesh Poyarekar <siddhesh@sourceware.org>2017-06-01 22:32:03 +0530
committerSiddhesh Poyarekar <siddhesh@sourceware.org>2017-06-07 11:11:38 +0530
commitff08fc59e36e02074eba8ab39b0d9001363970f0 (patch)
tree1926c0dd4897a00b7541deb214bf6a1a480a8f8d /sysdeps/generic/ldsodefs.h
parent6482e63403a3d13bf42f5029407b6151ad9f4ca5 (diff)
downloadglibc-ff08fc59e36e02074eba8ab39b0d9001363970f0.tar.gz
glibc-ff08fc59e36e02074eba8ab39b0d9001363970f0.tar.xz
glibc-ff08fc59e36e02074eba8ab39b0d9001363970f0.zip
tunables: Use glibc.tune.hwcap_mask tunable instead of _dl_hwcap_mask
Drop _dl_hwcap_mask when building with tunables.  This completes the
transition of hwcap_mask reading from _dl_hwcap_mask to tunables.

	* elf/dl-hwcaps.h: New file.
	* elf/dl-hwcaps.c: Include it.
	(_dl_important_hwcaps)[HAVE_TUNABLES]: Read and update
	glibc.tune.hwcap_mask.
	* elf/dl-cache.c: Include dl-hwcaps.h.
	(_dl_load_cache_lookup)[HAVE_TUNABLES]: Read
	glibc.tune.hwcap_mask.
	* sysdeps/sparc/sparc32/dl-machine.h: Likewise.
	* elf/dl-support.c (_dl_hwcap2)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	* elf/rtld.c (rtld_global_ro)[HAVE_TUNABLES]: Drop
	_dl_hwcap_mask.
	(process_envvars)[HAVE_TUNABLES]: Likewise.
	* sysdeps/generic/ldsodefs.h (rtld_global_ro)[HAVE_TUNABLES]:
	Likewise.
	* sysdeps/x86/cpu-features.c (init_cpu_features): Don't
	initialize dl_hwcap_mask when tunables are enabled.
Diffstat (limited to 'sysdeps/generic/ldsodefs.h')
-rw-r--r--sysdeps/generic/ldsodefs.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/generic/ldsodefs.h b/sysdeps/generic/ldsodefs.h
index f26a8b2051..695ac24c77 100644
--- a/sysdeps/generic/ldsodefs.h
+++ b/sysdeps/generic/ldsodefs.h
@@ -515,8 +515,10 @@ struct rtld_global_ro
   /* Mask for hardware capabilities that are available.  */
   EXTERN uint64_t _dl_hwcap;
 
+#if !HAVE_TUNABLES
   /* Mask for important hardware capabilities we honour. */
   EXTERN uint64_t _dl_hwcap_mask;
+#endif
 
 #ifdef HAVE_AUX_VECTOR
   /* Pointer to the auxv list supplied to the program at startup.  */