[PATCH][aarch64] Add thunderx2t99 and thunderx2t99p1 CPU names to tunables list

[PATCH][aarch64] Add thunderx2t99 and thunderx2t99p1 CPU names to tunables list

[Steve Ellcey]

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This patch adds thunderx2t99 and thunderx2t99p1 CPU names to the list
of cpu names that can be set by the glibc.tune.cpu tunable on aarch64.
These names and settings match gcc's
gcc/config/aarch64/aarch64-cores.def file.  Testing this patch requires
my earlier aarch64 tunables patch
(https://sourceware.org/ml/libc-alpha/2017-09/msg00111.html)
to fix how GLIBC_TUNABLES is processed.

Ok to checkin?

Steve Ellcey
sellcey@cavium.com


2017-09-07  Steve Ellcey  <sellcey@cavium.com>
	* manual/tunables.texi (glibc.tune.cpu): Add thunderx2t99 and
	thunderx2t99p1 to list of cpu names.
	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
	Add thunderx2t99 and thunderx2t99p1 entries to cpu_list.


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diff --git a/manual/tunables.texi b/manual/tunables.texi
index 3c19567..b1516d0 100644
--- a/manual/tunables.texi
+++ b/manual/tunables.texi
@@ -267,7 +267,8 @@ This tunable is specific to i386 and x86-64.
 @deftp Tunable glibc.tune.cpu
 The @code{glibc.tune.cpu=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{generic}, @code{falkor}, @code{thunderxt88}, @code{thunderx2t99},
+@code{thunderx2t99p1}.
 
 This tunable is specific to aarch64.
 @end deftp
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
index 18f5e60..19c78e6 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
@@ -28,9 +28,11 @@ struct cpu_list
 };
 
 static struct cpu_list cpu_list[] = {
-      {"falkor",	0x510FC000},
-      {"thunderxt88",	0x430F0A10},
-      {"generic", 	0x0}
+      {"falkor",	 0x510FC000},
+      {"thunderxt88",	 0x430F0A10},
+      {"thunderx2t99",   0x431F0AF0},
+      {"thunderx2t99p1", 0x420F5160},
+      {"generic", 	 0x0}
 };
 
 static uint64_t

Re: [PATCH][aarch64] Add thunderx2t99 and thunderx2t99p1 CPU names to tunables list

[Siddhesh Poyarekar]

On Thursday 07 September 2017 11:44 PM, Steve Ellcey wrote:
> This patch adds thunderx2t99 and thunderx2t99p1 CPU names to the list
> of cpu names that can be set by the glibc.tune.cpu tunable on aarch64.
> These names and settings match gcc's
> gcc/config/aarch64/aarch64-cores.def file.  Testing this patch requires
> my earlier aarch64 tunables patch
> (https://sourceware.org/ml/libc-alpha/2017-09/msg00111.html)
> to fix how GLIBC_TUNABLES is processed.
> 
> Ok to checkin?
> 
> Steve Ellcey
> sellcey@cavium.com
> 
> 
> 2017-09-07  Steve Ellcey  <sellcey@cavium.com>
> 	* manual/tunables.texi (glibc.tune.cpu): Add thunderx2t99 and
> 	thunderx2t99p1 to list of cpu names.
> 	* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
> 	Add thunderx2t99 and thunderx2t99p1 entries to cpu_list.
> 

Looks good.

Thanks,
Siddhesh