* [PATCH 0/3] aarch64: Add AmpereComputing emag to tunable cpu list
@ 2018-12-18 9:57 Feng Xue
2018-12-19 15:41 ` Szabolcs Nagy
0 siblings, 1 reply; 2+ messages in thread
From: Feng Xue @ 2018-12-18 9:57 UTC (permalink / raw)
To: libc-alpha; +Cc: Feng Xue
This patch and following patches are from AmpereComputing, which target AmpereComputing's emag processor. Hope your code reviews on these patches. And we have already signed a copyright assignement with the FSF.
Thanks,
Feng
---
Emag is a 64-bit CPU core released by AmpereComputing.
Add its name to cpu list, and corresponding macro as utilities for
later IFUNC dispatch.
* manual/tunables.texi (Tunable glibc.cpu.name): Add emag.
* sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
Add emag.
* sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_EMAG):
New macro.
---
ChangeLog | 8 ++++++++
manual/tunables.texi | 2 +-
sysdeps/unix/sysv/linux/aarch64/cpu-features.c | 1 +
sysdeps/unix/sysv/linux/aarch64/cpu-features.h | 3 +++
4 files changed, 13 insertions(+), 1 deletion(-)
diff --git a/ChangeLog b/ChangeLog
index e0e7a74..ee2119b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2018-12-17 Feng Xue <fxue@os.amperecomputing.com>
+
+ * manual/tunables.texi (Tunable glibc.cpu.name): Add emag.
+ * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
+ Add emag.
+ * sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_EMAG):
+ New macro.
+
2018-12-15 Paul Eggert <eggert@cs.ucla.edu>
regex: fix storage-exhaustion error
diff --git a/manual/tunables.texi b/manual/tunables.texi
index 09a2565..1a20e95 100644
--- a/manual/tunables.texi
+++ b/manual/tunables.texi
@@ -360,7 +360,7 @@ This tunable is specific to powerpc, powerpc64 and powerpc64le.
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}.
+@code{thunderx2t99p1}, @code{emag}.
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 b4f3485..07138ea 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.c
@@ -36,6 +36,7 @@ static struct cpu_list cpu_list[] = {
{"thunderx2t99", 0x431F0AF0},
{"thunderx2t99p1", 0x420F5160},
{"phecda", 0x680F0000},
+ {"emag", 0x503F0001},
{"generic", 0x0}
};
diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
index eb35adf..95b17d4 100644
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
@@ -52,6 +52,9 @@
#define IS_PHECDA(midr) (MIDR_IMPLEMENTOR(midr) == 'h' \
&& MIDR_PARTNUM(midr) == 0x000)
+#define IS_EMAG(midr) (MIDR_IMPLEMENTOR(midr) == 'P' \
+ && MIDR_PARTNUM(midr) == 0x000)
+
struct cpu_features
{
uint64_t midr_el1;
--
1.8.3.1
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH 0/3] aarch64: Add AmpereComputing emag to tunable cpu list
2018-12-18 9:57 [PATCH 0/3] aarch64: Add AmpereComputing emag to tunable cpu list Feng Xue
@ 2018-12-19 15:41 ` Szabolcs Nagy
0 siblings, 0 replies; 2+ messages in thread
From: Szabolcs Nagy @ 2018-12-19 15:41 UTC (permalink / raw)
To: Feng Xue, libc-alpha; +Cc: nd
On 18/12/2018 09:49, Feng Xue wrote:
> This patch and following patches are from AmpereComputing, which target AmpereComputing's emag processor. Hope your code reviews on these patches. And we have already signed a copyright assignement with the FSF.
>
> Thanks,
> Feng
> ---
>
> Emag is a 64-bit CPU core released by AmpereComputing.
>
> Add its name to cpu list, and corresponding macro as utilities for
> later IFUNC dispatch.
>
> * manual/tunables.texi (Tunable glibc.cpu.name): Add emag.
> * sysdeps/unix/sysv/linux/aarch64/cpu-features.c (cpu_list):
> Add emag.
> * sysdeps/unix/sysv/linux/aarch64/cpu-features.h (IS_EMAG):
> New macro.
OK to commit.
^ permalink raw reply [flat|nested] 2+ messages in thread
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