diff options
Diffstat (limited to 'sysdeps/x86/cacheinfo.c')
| -rw-r--r-- | sysdeps/x86/cacheinfo.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/sysdeps/x86/cacheinfo.c b/sysdeps/x86/cacheinfo.c index f66f2b86e0..8000fd1e99 100644 --- a/sysdeps/x86/cacheinfo.c +++ b/sysdeps/x86/cacheinfo.c @@ -126,7 +126,8 @@ intel_02_known_compare (const void *p1, const void *p2) static long int __attribute__ ((noinline)) intel_check_word (int name, unsigned int value, bool *has_level_2, - bool *no_level_2_or_3) + bool *no_level_2_or_3, + const struct cpu_features *cpu_features) { if ((value & 0x80000000) != 0) /* The register value is reserved. */ @@ -204,8 +205,8 @@ intel_check_word (int name, unsigned int value, bool *has_level_2, /* Intel reused this value. For family 15, model 6 it specifies the 3rd level cache. Otherwise the 2nd level cache. */ - unsigned int family = GLRO(dl_x86_cpu_features).family; - unsigned int model = GLRO(dl_x86_cpu_features).model; + unsigned int family = cpu_features->family; + unsigned int model = cpu_features->model; if (family == 15 && model == 6) { @@ -255,8 +256,10 @@ intel_check_word (int name, unsigned int value, bool *has_level_2, static long int __attribute__ ((noinline)) -handle_intel (int name, unsigned int maxidx) +handle_intel (int name, const struct cpu_features *cpu_features) { + unsigned int maxidx = cpu_features->max_cpuid; + /* Return -1 for older CPUs. */ if (maxidx < 2) return -1; @@ -287,19 +290,23 @@ handle_intel (int name, unsigned int maxidx) } /* Process the individual registers' value. */ - result = intel_check_word (name, eax, &has_level_2, &no_level_2_or_3); + result = intel_check_word (name, eax, &has_level_2, + &no_level_2_or_3, cpu_features); if (result != 0) return result; - result = intel_check_word (name, ebx, &has_level_2, &no_level_2_or_3); + result = intel_check_word (name, ebx, &has_level_2, + &no_level_2_or_3, cpu_features); if (result != 0) return result; - result = intel_check_word (name, ecx, &has_level_2, &no_level_2_or_3); + result = intel_check_word (name, ecx, &has_level_2, + &no_level_2_or_3, cpu_features); if (result != 0) return result; - result = intel_check_word (name, edx, &has_level_2, &no_level_2_or_3); + result = intel_check_word (name, edx, &has_level_2, + &no_level_2_or_3, cpu_features); if (result != 0) return result; } @@ -437,7 +444,7 @@ __cache_sysconf (int name) const struct cpu_features *cpu_features = __get_cpu_features (); if (cpu_features->kind == arch_kind_intel) - return handle_intel (name, cpu_features->max_cpuid); + return handle_intel (name, cpu_features); if (cpu_features->kind == arch_kind_amd) return handle_amd (name); @@ -494,14 +501,14 @@ init_cacheinfo (void) if (cpu_features->kind == arch_kind_intel) { - data = handle_intel (_SC_LEVEL1_DCACHE_SIZE, max_cpuid); + data = handle_intel (_SC_LEVEL1_DCACHE_SIZE, cpu_features); - long int core = handle_intel (_SC_LEVEL2_CACHE_SIZE, max_cpuid); + long int core = handle_intel (_SC_LEVEL2_CACHE_SIZE, cpu_features); bool inclusive_cache = true; /* Try L3 first. */ level = 3; - shared = handle_intel (_SC_LEVEL3_CACHE_SIZE, max_cpuid); + shared = handle_intel (_SC_LEVEL3_CACHE_SIZE, cpu_features); /* Number of logical processors sharing L2 cache. */ int threads_l2; @@ -531,8 +538,8 @@ init_cacheinfo (void) highest cache level. */ if (max_cpuid >= 4) { - unsigned int family = GLRO(dl_x86_cpu_features).family; - unsigned int model = GLRO(dl_x86_cpu_features).model; + unsigned int family = cpu_features->family; + unsigned int model = cpu_features->model; int i = 0; @@ -675,7 +682,7 @@ intel_bug_no_cache_info: level. */ threads - = ((GLRO(dl_x86_cpu_features).cpuid[COMMON_CPUID_INDEX_1].ebx + = ((cpu_features->cpuid[COMMON_CPUID_INDEX_1].ebx >> 16) & 0xff); } |