From: Florian Weimer <fweimer@redhat.com>
To: H.J. Lu <hjl.tools@gmail.com>
Cc: libc-alpha@sourceware.org,
Sajan Karumanchi <sajan.karumanchi@amd.com>,
Premachandra Mallappa <premachandra.mallappa@amd.com>
Subject: [PATCH] x86: Restore processing of cache size tunables in init_cacheinfo
Date: Wed, 28 Oct 2020 16:11:56 +0100 [thread overview]
Message-ID: <87v9euv0zn.fsf@oldenburg2.str.redhat.com> (raw)
Fixes and partially reverts commit 59803e81f96b479c17f583b31eac44b5
("x86: Optimizing memcpy for AMD Zen architecture.").
---
sysdeps/x86/cacheinfo.h | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/sysdeps/x86/cacheinfo.h b/sysdeps/x86/cacheinfo.h
index 1296c93b2b..0aec0e2875 100644
--- a/sysdeps/x86/cacheinfo.h
+++ b/sysdeps/x86/cacheinfo.h
@@ -354,11 +354,9 @@ init_cacheinfo (void)
}
}
+ /* Prefer cache size configure via tuning. */
if (cpu_features->data_cache_size != 0)
- {
- if (data == 0 || cpu_features->basic.kind != arch_kind_amd)
- data = cpu_features->data_cache_size;
- }
+ data = cpu_features->data_cache_size;
if (data > 0)
{
@@ -370,11 +368,9 @@ init_cacheinfo (void)
__x86_data_cache_size = data;
}
+ /* Prefer cache size configure via tuning. */
if (cpu_features->shared_cache_size != 0)
- {
- if (shared == 0 || cpu_features->basic.kind != arch_kind_amd)
- shared = cpu_features->shared_cache_size;
- }
+ shared = cpu_features->shared_cache_size;
if (shared > 0)
{
--
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next reply other threads:[~2020-10-28 15:12 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 15:11 Florian Weimer [this message]
2020-10-28 15:14 ` H.J. Lu
2020-10-30 6:46 ` Karumanchi, Sajan
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