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authorCoprDistGit <infra@openeuler.org>2024-10-09 03:36:26 +0000
committerCoprDistGit <infra@openeuler.org>2024-10-09 03:36:26 +0000
commitdb43dfdfa8bc2b938582aef3d87e43594c13ee50 (patch)
tree47b95b2f6ac8d8b7e6fa373a5bd7d661bf7234df /0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch
parentb933872de72b006230559f77acc3ccfb38a1f343 (diff)
automatic import of glibcopeneuler20.03
Diffstat (limited to '0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch')
-rw-r--r--0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch45
1 files changed, 45 insertions, 0 deletions
diff --git a/0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch b/0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch
new file mode 100644
index 0000000..cb8390d
--- /dev/null
+++ b/0003-x86-Fix-incorrect-scope-of-setting-shared_per_thread.patch
@@ -0,0 +1,45 @@
+From 5ea70cc02626d9b85f1570153873d8648a47bf95 Mon Sep 17 00:00:00 2001
+From: Noah Goldstein <goldstein.w.n@gmail.com>
+Date: Thu, 10 Aug 2023 19:28:24 -0500
+Subject: [PATCH 03/12] x86: Fix incorrect scope of setting `shared_per_thread`
+ [BZ# 30745]
+
+The:
+
+```
+ if (shared_per_thread > 0 && threads > 0)
+ shared_per_thread /= threads;
+```
+
+Code was accidentally moved to inside the else scope. This doesn't
+match how it was previously (before af992e7abd).
+
+This patch fixes that by putting the division after the `else` block.
+
+(cherry picked from commit 084fb31bc2c5f95ae0b9e6df4d3cf0ff43471ede)
+---
+ sysdeps/x86/dl-cacheinfo.h | 7 +++----
+ 1 file changed, 3 insertions(+), 4 deletions(-)
+
+diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
+index 285773039f..5ddb35c9d9 100644
+--- a/sysdeps/x86/dl-cacheinfo.h
++++ b/sysdeps/x86/dl-cacheinfo.h
+@@ -770,11 +770,10 @@ get_common_cache_info (long int *shared_ptr, long int * shared_per_thread_ptr, u
+ level. */
+ threads = ((cpu_features->features[CPUID_INDEX_1].cpuid.ebx >> 16)
+ & 0xff);
+-
+- /* Get per-thread size of highest level cache. */
+- if (shared_per_thread > 0 && threads > 0)
+- shared_per_thread /= threads;
+ }
++ /* Get per-thread size of highest level cache. */
++ if (shared_per_thread > 0 && threads > 0)
++ shared_per_thread /= threads;
+ }
+
+ /* Account for non-inclusive L2 and L3 caches. */
+--
+2.33.0
+