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| author | Chao Peng <chao.p.peng@linux.intel.com> | 2018-10-24 11:05:06 +0300 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-12-21 13:28:32 +0300 |
| commit | f6d079ce867d679e4dffef5b3112c7634215fd88 (patch) | |
| tree | bca88605d39dfab913f1e41dfa10b0fd826b2709 /arch/x86/include/asm/intel_pt.h | |
| parent | 887eda13b570f62a8b7d3eadc91734e44d95e636 (diff) | |
| download | linux-f6d079ce867d679e4dffef5b3112c7634215fd88.tar.xz | |
perf/x86/intel/pt: Export pt_cap_get()
pt_cap_get() is required by the upcoming PT support in KVM guests.
Export it and move the capabilites enum to a global header.
As a global functions, "pt_*" is already used for ptrace and
other things, so it makes sense to use "intel_pt_*" as a prefix.
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Chao Peng <chao.p.peng@linux.intel.com>
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/include/asm/intel_pt.h')
| -rw-r--r-- | arch/x86/include/asm/intel_pt.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/x86/include/asm/intel_pt.h b/arch/x86/include/asm/intel_pt.h index b523f51c5400..fa4b4fd2dbed 100644 --- a/arch/x86/include/asm/intel_pt.h +++ b/arch/x86/include/asm/intel_pt.h @@ -2,10 +2,33 @@ #ifndef _ASM_X86_INTEL_PT_H #define _ASM_X86_INTEL_PT_H +#define PT_CPUID_LEAVES 2 +#define PT_CPUID_REGS_NUM 4 /* number of regsters (eax, ebx, ecx, edx) */ + +enum pt_capabilities { + PT_CAP_max_subleaf = 0, + PT_CAP_cr3_filtering, + PT_CAP_psb_cyc, + PT_CAP_ip_filtering, + PT_CAP_mtc, + PT_CAP_ptwrite, + PT_CAP_power_event_trace, + PT_CAP_topa_output, + PT_CAP_topa_multiple_entries, + PT_CAP_single_range_output, + PT_CAP_payloads_lip, + PT_CAP_num_address_ranges, + PT_CAP_mtc_periods, + PT_CAP_cycle_thresholds, + PT_CAP_psb_periods, +}; + #if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_INTEL) void cpu_emergency_stop_pt(void); +extern u32 intel_pt_validate_hw_cap(enum pt_capabilities cap); #else static inline void cpu_emergency_stop_pt(void) {} +static inline u32 intel_pt_validate_hw_cap(enum pt_capabilities cap) { return 0; } #endif #endif /* _ASM_X86_INTEL_PT_H */ |