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glibc/SOURCES/glibc-rh2166710-2.patch

112 lines
4.3 KiB

commit 856bab7717ef6d1033fd7cbf7cfb2ddefbfffb07
Author: Andreas Schwab <schwab@suse.de>
Date: Thu Feb 9 14:56:21 2023 +0100
x86/dl-cacheinfo: remove unsused parameter from handle_amd
Also replace an unreachable assert with __builtin_unreachable.
Conflicts:
sysdeps/x86/dl-cacheinfo.h
(different backport order downstream)
diff --git a/sysdeps/x86/dl-cacheinfo.h b/sysdeps/x86/dl-cacheinfo.h
index 3408700fc0b06e5b..cc2f8862ce88f655 100644
--- a/sysdeps/x86/dl-cacheinfo.h
+++ b/sysdeps/x86/dl-cacheinfo.h
@@ -311,7 +311,7 @@ handle_intel (int name, const struct cpu_features *cpu_features)
static long int __attribute__ ((noinline))
-handle_amd (int name, const struct cpu_features *cpu_features)
+handle_amd (int name)
{
unsigned int eax;
unsigned int ebx;
@@ -334,24 +334,23 @@ handle_amd (int name, const struct cpu_features *cpu_features)
switch (name)
{
- case _SC_LEVEL1_ICACHE_ASSOC:
- case _SC_LEVEL1_DCACHE_ASSOC:
- case _SC_LEVEL2_CACHE_ASSOC:
- case _SC_LEVEL3_CACHE_ASSOC:
- return ecx?((ebx >> 22) & 0x3ff) + 1 : 0;
- case _SC_LEVEL1_ICACHE_LINESIZE:
- case _SC_LEVEL1_DCACHE_LINESIZE:
- case _SC_LEVEL2_CACHE_LINESIZE:
- case _SC_LEVEL3_CACHE_LINESIZE:
- return ecx?(ebx & 0xfff) + 1 : 0;
- case _SC_LEVEL1_ICACHE_SIZE:
- case _SC_LEVEL1_DCACHE_SIZE:
- case _SC_LEVEL2_CACHE_SIZE:
- case _SC_LEVEL3_CACHE_SIZE:
- return ecx?(((ebx >> 22) & 0x3ff) + 1)*((ebx & 0xfff) + 1)\
- *(ecx + 1):0;
- default:
- assert (! "cannot happen");
+ case _SC_LEVEL1_ICACHE_ASSOC:
+ case _SC_LEVEL1_DCACHE_ASSOC:
+ case _SC_LEVEL2_CACHE_ASSOC:
+ case _SC_LEVEL3_CACHE_ASSOC:
+ return ecx ? ((ebx >> 22) & 0x3ff) + 1 : 0;
+ case _SC_LEVEL1_ICACHE_LINESIZE:
+ case _SC_LEVEL1_DCACHE_LINESIZE:
+ case _SC_LEVEL2_CACHE_LINESIZE:
+ case _SC_LEVEL3_CACHE_LINESIZE:
+ return ecx ? (ebx & 0xfff) + 1 : 0;
+ case _SC_LEVEL1_ICACHE_SIZE:
+ case _SC_LEVEL1_DCACHE_SIZE:
+ case _SC_LEVEL2_CACHE_SIZE:
+ case _SC_LEVEL3_CACHE_SIZE:
+ return ecx ? (((ebx >> 22) & 0x3ff) + 1) * ((ebx & 0xfff) + 1) * (ecx + 1): 0;
+ default:
+ __builtin_unreachable ();
}
return -1;
}
@@ -701,31 +700,26 @@ dl_init_cacheinfo (struct cpu_features *cpu_features)
}
else if (cpu_features->basic.kind == arch_kind_amd)
{
- data = handle_amd (_SC_LEVEL1_DCACHE_SIZE, cpu_features);
- core = handle_amd (_SC_LEVEL2_CACHE_SIZE, cpu_features);
- shared = handle_amd (_SC_LEVEL3_CACHE_SIZE, cpu_features);
+ data = handle_amd (_SC_LEVEL1_DCACHE_SIZE);
+ core = handle_amd (_SC_LEVEL2_CACHE_SIZE);
+ shared = handle_amd (_SC_LEVEL3_CACHE_SIZE);
shared_per_thread = shared;
- level1_icache_size = handle_amd (_SC_LEVEL1_ICACHE_SIZE, cpu_features);
- level1_icache_linesize
- = handle_amd (_SC_LEVEL1_ICACHE_LINESIZE, cpu_features);
+ level1_icache_size = handle_amd (_SC_LEVEL1_ICACHE_SIZE);
+ level1_icache_linesize = handle_amd (_SC_LEVEL1_ICACHE_LINESIZE);
level1_dcache_size = data;
- level1_dcache_assoc
- = handle_amd (_SC_LEVEL1_DCACHE_ASSOC, cpu_features);
- level1_dcache_linesize
- = handle_amd (_SC_LEVEL1_DCACHE_LINESIZE, cpu_features);
+ level1_dcache_assoc = handle_amd (_SC_LEVEL1_DCACHE_ASSOC);
+ level1_dcache_linesize = handle_amd (_SC_LEVEL1_DCACHE_LINESIZE);
level2_cache_size = core;
- level2_cache_assoc = handle_amd (_SC_LEVEL2_CACHE_ASSOC, cpu_features);
- level2_cache_linesize
- = handle_amd (_SC_LEVEL2_CACHE_LINESIZE, cpu_features);
+ level2_cache_assoc = handle_amd (_SC_LEVEL2_CACHE_ASSOC);
+ level2_cache_linesize = handle_amd (_SC_LEVEL2_CACHE_LINESIZE);
level3_cache_size = shared;
- level3_cache_assoc = handle_amd (_SC_LEVEL3_CACHE_ASSOC, cpu_features);
- level3_cache_linesize
- = handle_amd (_SC_LEVEL3_CACHE_LINESIZE, cpu_features);
+ level3_cache_assoc = handle_amd (_SC_LEVEL3_CACHE_ASSOC);
+ level3_cache_linesize = handle_amd (_SC_LEVEL3_CACHE_LINESIZE);
if (shared <= 0)
/* No shared L3 cache. All we have is the L2 cache. */
- shared = core;
+ shared = core;
if (shared_per_thread <= 0)
shared_per_thread = shared;