Rename the glibc.tune namespace to glibc.cpu

The glibc.tune namespace is vaguely named since it is a 'tunable', so
give it a more specific name that describes what it refers to.  Rename
the tunable namespace to 'cpu' to more accurately reflect what it
encompasses.  Also rename glibc.tune.cpu to glibc.cpu.name since
glibc.cpu.cpu is weird.

	* NEWS: Mention the change.
	* elf/dl-tunables.list: Rename tune namespace to cpu.
	* sysdeps/powerpc/dl-tunables.list: Likewise.
	* sysdeps/x86/dl-tunables.list: Likewise.
	* sysdeps/aarch64/dl-tunables.list: Rename tune.cpu to
	cpu.name.
	* elf/dl-hwcaps.c (_dl_important_hwcaps): Adjust.
	* elf/dl-hwcaps.h (GET_HWCAP_MASK): Likewise.
	* manual/README.tunables: Likewise.
	* manual/tunables.texi: Likewise.
	* sysdeps/powerpc/cpu-features.c: Likewise.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c
	(init_cpu_features): Likewise.
	* sysdeps/x86/cpu-features.c: Likewise.
	* sysdeps/x86/cpu-features.h: Likewise.
	* sysdeps/x86/cpu-tunables.c: Likewise.
	* sysdeps/x86_64/Makefile: Likewise.
	* sysdeps/x86/dl-cet.c: Likewise.

Reviewed-by: Carlos O'Donell <carlos@redhat.com>

2 files changed, 23 insertions, 23 deletions

diff --git a/manual/README.tunables b/manual/README.tunables
index 3967679..f87a31a 100644
--- a/manual/README.tunables
+++ b/manual/README.tunables
@@ -105,11 +105,11 @@ where 'check' is the tunable name, 'int32_t' is the C type of the tunable and
 To get and set tunables in a different namespace from that module, use the full
 form of the macros as follows:
 
-  val = TUNABLE_GET_FULL (glibc, tune, hwcap_mask, uint64_t, NULL)
+  val = TUNABLE_GET_FULL (glibc, cpu, hwcap_mask, uint64_t, NULL)
 
-  TUNABLE_SET_FULL (glibc, tune, hwcap_mask, uint64_t, val)
+  TUNABLE_SET_FULL (glibc, cpu, hwcap_mask, uint64_t, val)
 
-where 'glibc' is the top namespace, 'tune' is the tunable namespace and the
+where 'glibc' is the top namespace, 'cpu' is the tunable namespace and the
 remaining arguments are the same as the short form macros.
 
 When TUNABLE_NAMESPACE is not defined in a module, TUNABLE_GET is equivalent to
diff --git a/manual/tunables.texi b/manual/tunables.texi
index bb4819b..3345a23 100644
--- a/manual/tunables.texi
+++ b/manual/tunables.texi
@@ -295,23 +295,23 @@ The default value of this tunable is @samp{3}.
 @cindex non_temporal_threshold tunables
 @cindex tunables, non_temporal_threshold
 
-@deftp {Tunable namespace} glibc.tune
+@deftp {Tunable namespace} glibc.cpu
 Behavior of @theglibc{} can be tuned to assume specific hardware capabilities
-by setting the following tunables in the @code{tune} namespace:
+by setting the following tunables in the @code{cpu} namespace:
 @end deftp
 
-@deftp Tunable glibc.tune.hwcap_mask
+@deftp Tunable glibc.cpu.hwcap_mask
 This tunable supersedes the @env{LD_HWCAP_MASK} environment variable and is
 identical in features.
 
 The @code{AT_HWCAP} key in the Auxiliary Vector specifies instruction set
 extensions available in the processor at runtime for some architectures.  The
-@code{glibc.tune.hwcap_mask} tunable allows the user to mask out those
+@code{glibc.cpu.hwcap_mask} tunable allows the user to mask out those
 capabilities at runtime, thus disabling use of those extensions.
 @end deftp
 
-@deftp Tunable glibc.tune.hwcaps
-The @code{glibc.tune.hwcaps=-xxx,yyy,-zzz...} tunable allows the user to
+@deftp Tunable glibc.cpu.hwcaps
+The @code{glibc.cpu.hwcaps=-xxx,yyy,-zzz...} tunable allows the user to
 enable CPU/ARCH feature @code{yyy}, disable CPU/ARCH feature @code{xxx}
 and @code{zzz} where the feature name is case-sensitive and has to match
 the ones in @code{sysdeps/x86/cpu-features.h}.
@@ -319,8 +319,8 @@ the ones in @code{sysdeps/x86/cpu-features.h}.
 This tunable is specific to i386 and x86-64.
 @end deftp
 
-@deftp Tunable glibc.tune.cached_memopt
-The @code{glibc.tune.cached_memopt=[0|1]} tunable allows the user to
+@deftp Tunable glibc.cpu.cached_memopt
+The @code{glibc.cpu.cached_memopt=[0|1]} tunable allows the user to
 enable optimizations recommended for cacheable memory.  If set to
 @code{1}, @theglibc{} assumes that the process memory image consists
 of cacheable (non-device) memory only.  The default, @code{0},
@@ -329,8 +329,8 @@ indicates that the process may use device memory.
 This tunable is specific to powerpc, powerpc64 and powerpc64le.
 @end deftp
 
-@deftp Tunable glibc.tune.cpu
-The @code{glibc.tune.cpu=xxx} tunable allows the user to tell @theglibc{} to
+@deftp Tunable glibc.cpu.name
+The @code{glibc.cpu.name=xxx} tunable allows the user to tell @theglibc{} to
 assume that the CPU is @code{xxx} where xxx may have one of these values:
 @code{generic}, @code{falkor}, @code{thunderxt88}, @code{thunderx2t99},
 @code{thunderx2t99p1}.
@@ -338,27 +338,27 @@ assume that the CPU is @code{xxx} where xxx may have one of these values:
 This tunable is specific to aarch64.
 @end deftp
 
-@deftp Tunable glibc.tune.x86_data_cache_size
-The @code{glibc.tune.x86_data_cache_size} tunable allows the user to set
+@deftp Tunable glibc.cpu.x86_data_cache_size
+The @code{glibc.cpu.x86_data_cache_size} tunable allows the user to set
 data cache size in bytes for use in memory and string routines.
 
 This tunable is specific to i386 and x86-64.
 @end deftp
 
-@deftp Tunable glibc.tune.x86_shared_cache_size
-The @code{glibc.tune.x86_shared_cache_size} tunable allows the user to
+@deftp Tunable glibc.cpu.x86_shared_cache_size
+The @code{glibc.cpu.x86_shared_cache_size} tunable allows the user to
 set shared cache size in bytes for use in memory and string routines.
 @end deftp
 
-@deftp Tunable glibc.tune.x86_non_temporal_threshold
-The @code{glibc.tune.x86_non_temporal_threshold} tunable allows the user
+@deftp Tunable glibc.cpu.x86_non_temporal_threshold
+The @code{glibc.cpu.x86_non_temporal_threshold} tunable allows the user
 to set threshold in bytes for non temporal store.
 
 This tunable is specific to i386 and x86-64.
 @end deftp
 
-@deftp Tunable glibc.tune.x86_ibt
-The @code{glibc.tune.x86_ibt} tunable allows the user to control how
+@deftp Tunable glibc.cpu.x86_ibt
+The @code{glibc.cpu.x86_ibt} tunable allows the user to control how
 indirect branch tracking (IBT) should be enabled.  Accepted values are
 @code{on}, @code{off}, and @code{permissive}.  @code{on} always turns
 on IBT regardless of whether IBT is enabled in the executable and its
@@ -370,8 +370,8 @@ IBT on non-CET executables and shared libraries.
 This tunable is specific to i386 and x86-64.
 @end deftp
 
-@deftp Tunable glibc.tune.x86_shstk
-The @code{glibc.tune.x86_shstk} tunable allows the user to control how
+@deftp Tunable glibc.cpu.x86_shstk
+The @code{glibc.cpu.x86_shstk} tunable allows the user to control how
 the shadow stack (SHSTK) should be enabled.  Accepted values are
 @code{on}, @code{off}, and @code{permissive}.  @code{on} always turns on
 SHSTK regardless of whether SHSTK is enabled in the executable and its