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cache cpu info in a file at boot. #261

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cache cpu info in a file at boot. #261

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f6c059f
tlb refactor.
bunnitha Feb 4, 2025
085a58d
cache cpu info in a file at boot
bunnitha Feb 4, 2025
0d9eb6d
Merge branch 'main' into cpuinfo-modified
digantdesai Mar 25, 2025
5e756de
Merge branch 'main' into cpuinfo-modified
digantdesai Apr 8, 2025
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6 changes: 5 additions & 1 deletion deps/clog/include/clog.h
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Original file line number Diff line number Diff line change
Expand Up @@ -12,7 +12,11 @@
#define CLOG_DEBUG 5

#ifndef CLOG_VISIBILITY
#if defined(__ELF__)
#if defined(__GNUC__)
// ld.lld: error: undefined hidden symbol: clog_vlog_error
// referenced by log.h:16 (external/cpuinfo/src/cpuinfo/log.h)
#define CLOG_VISIBILITY
#elif defined(__ELF__)
#define CLOG_VISIBILITY __attribute__((__visibility__("internal")))
#elif defined(__MACH__)
#define CLOG_VISIBILITY __attribute__((__visibility__("hidden")))
Expand Down
27 changes: 27 additions & 0 deletions include/cpuinfo.h
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Expand Up @@ -866,11 +866,38 @@ struct cpuinfo_x86_isa {
bool phe;
bool pmm;
bool lwp;
bool erms;
bool smap;
bool serialize;
};

extern struct cpuinfo_x86_isa cpuinfo_isa;
#endif

static inline bool cpuinfo_has_x86_erms(void) {
#if CPUINFO_ARCH_X86 || CPUINFO_ARCH_X86_64
return cpuinfo_isa.erms;
#else
return false;
#endif
}

static inline bool cpuinfo_has_x86_smap(void) {
#if CPUINFO_ARCH_X86 || CPUINFO_ARCH_X86_64
return cpuinfo_isa.smap;
#else
return false;
#endif
}

static inline bool cpuinfo_has_x86_serialize(void) {
#if CPUINFO_ARCH_X86 || CPUINFO_ARCH_X86_64
return cpuinfo_isa.serialize;
#else
return false;
#endif
}

static inline bool cpuinfo_has_x86_rdtsc(void) {
#if CPUINFO_ARCH_X86_64
return true;
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63 changes: 20 additions & 43 deletions src/x86/api.h
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,22 @@ struct cpuinfo_x86_caches {
uint32_t prefetch_size;
};

struct cpuinfo_x86_tlbs {
struct cpuinfo_tlb itlb_4KB;
struct cpuinfo_tlb itlb_2MB;
struct cpuinfo_tlb itlb_4MB;
struct cpuinfo_tlb dtlb0_4KB;
struct cpuinfo_tlb dtlb0_2MB;
struct cpuinfo_tlb dtlb0_4MB;
struct cpuinfo_tlb dtlb_4KB;
struct cpuinfo_tlb dtlb_2MB;
struct cpuinfo_tlb dtlb_4MB;
struct cpuinfo_tlb dtlb_1GB;
struct cpuinfo_tlb stlb2_4KB;
struct cpuinfo_tlb stlb2_2MB;
struct cpuinfo_tlb stlb2_1GB;
};

struct cpuinfo_x86_model_info {
uint32_t model;
uint32_t family;
Expand Down Expand Up @@ -61,21 +77,7 @@ struct cpuinfo_x86_processor {
int linux_id;
#endif
struct cpuinfo_x86_caches cache;
struct {
struct cpuinfo_tlb itlb_4KB;
struct cpuinfo_tlb itlb_2MB;
struct cpuinfo_tlb itlb_4MB;
struct cpuinfo_tlb dtlb0_4KB;
struct cpuinfo_tlb dtlb0_2MB;
struct cpuinfo_tlb dtlb0_4MB;
struct cpuinfo_tlb dtlb_4KB;
struct cpuinfo_tlb dtlb_2MB;
struct cpuinfo_tlb dtlb_4MB;
struct cpuinfo_tlb dtlb_1GB;
struct cpuinfo_tlb stlb2_4KB;
struct cpuinfo_tlb stlb2_2MB;
struct cpuinfo_tlb stlb2_1GB;
} tlb;
struct cpuinfo_x86_tlbs tlb;
struct cpuinfo_x86_topology topology;
char brand_string[CPUINFO_PACKAGE_NAME_MAX];
};
Expand Down Expand Up @@ -109,40 +111,15 @@ CPUINFO_INTERNAL void cpuinfo_x86_detect_cache(
enum cpuinfo_vendor vendor,
const struct cpuinfo_x86_model_info* model_info,
struct cpuinfo_x86_caches* cache,
struct cpuinfo_tlb* itlb_4KB,
struct cpuinfo_tlb* itlb_2MB,
struct cpuinfo_tlb* itlb_4MB,
struct cpuinfo_tlb* dtlb0_4KB,
struct cpuinfo_tlb* dtlb0_2MB,
struct cpuinfo_tlb* dtlb0_4MB,
struct cpuinfo_tlb* dtlb_4KB,
struct cpuinfo_tlb* dtlb_2MB,
struct cpuinfo_tlb* dtlb_4MB,
struct cpuinfo_tlb* dtlb_1GB,
struct cpuinfo_tlb* stlb2_4KB,
struct cpuinfo_tlb* stlb2_2MB,
struct cpuinfo_tlb* stlb2_1GB,
uint32_t* log2_package_cores_max);
struct cpuinfo_x86_tlbs* tlb,
struct cpuinfo_x86_topology* topology);

CPUINFO_INTERNAL void cpuinfo_x86_decode_cache_descriptor(
uint8_t descriptor,
enum cpuinfo_vendor vendor,
const struct cpuinfo_x86_model_info* model_info,
struct cpuinfo_x86_caches* cache,
struct cpuinfo_tlb* itlb_4KB,
struct cpuinfo_tlb* itlb_2MB,
struct cpuinfo_tlb* itlb_4MB,
struct cpuinfo_tlb* dtlb0_4KB,
struct cpuinfo_tlb* dtlb0_2MB,
struct cpuinfo_tlb* dtlb0_4MB,
struct cpuinfo_tlb* dtlb_4KB,
struct cpuinfo_tlb* dtlb_2MB,
struct cpuinfo_tlb* dtlb_4MB,
struct cpuinfo_tlb* dtlb_1GB,
struct cpuinfo_tlb* stlb2_4KB,
struct cpuinfo_tlb* stlb2_2MB,
struct cpuinfo_tlb* stlb2_1GB,
uint32_t* prefetch_size);
struct cpuinfo_x86_tlbs* tlb);

CPUINFO_INTERNAL bool cpuinfo_x86_decode_deterministic_cache_parameters(
struct cpuid_regs regs,
Expand Down
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