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40 lines
1.3 KiB
40 lines
1.3 KiB
1 year ago
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Adjusted for backport to c8s by modifying sysdeps/x86/cacheinfo.h.
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commit 885a7f0feee951f514a121788f46f33b2867110f
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Author: Noah Goldstein <goldstein.w.n@gmail.com>
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Date: Fri Aug 11 12:29:11 2023 -0500
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x86: Fix incorrect scope of setting `shared_per_thread` [BZ# 30745]
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The:
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```
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if (shared_per_thread > 0 && threads > 0)
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shared_per_thread /= threads;
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```
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Code was accidentally moved to inside the else scope. This doesn't
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match how it was previously (before af992e7abd).
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This patch fixes that by putting the division after the `else` block.
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diff --git a/sysdeps/x86/cacheinfo.h b/sysdeps/x86/cacheinfo.h
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index 4dbfa979ef052eaa..e53fa25106c95253 100644
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--- a/sysdeps/x86/cacheinfo.h
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+++ b/sysdeps/x86/cacheinfo.h
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@@ -243,11 +243,10 @@ get_common_cache_info (long int *shared_ptr, long int * shared_per_thread_ptr, u
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level. */
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threads = ((cpu_features->features[COMMON_CPUID_INDEX_1].cpuid.ebx >> 16)
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& 0xff);
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-
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- /* Get per-thread size of highest level cache. */
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- if (shared_per_thread > 0 && threads > 0)
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- shared_per_thread /= threads;
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}
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+ /* Get per-thread size of highest level cache. */
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+ if (shared_per_thread > 0 && threads > 0)
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+ shared_per_thread /= threads;
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}
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/* Account for non-inclusive L2 and L3 caches. */
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