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91d7753a45
Adding a generic way to use __output_copy function with specific copy function via DEFINE_PERF_OUTPUT_COPY macro. Using this to add new __output_copy_user function, that provides output copy from user pointers. For x86 the copy_from_user_nmi function is used and __copy_from_user_inatomic for the rest of the architectures. This new function will be used in user stack dump on sample, coming in next patches. Signed-off-by: Jiri Olsa <jolsa@redhat.com> Cc: "Frank Ch. Eigler" <fche@redhat.com> Cc: Arun Sharma <asharma@fb.com> Cc: Benjamin Redelings <benjamin.redelings@nescent.org> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Frank Ch. Eigler <fche@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Ulrich Drepper <drepper@gmail.com> Link: http://lkml.kernel.org/r/1344345647-11536-4-git-send-email-jolsa@redhat.com Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
268 lines
7.3 KiB
C
268 lines
7.3 KiB
C
#ifndef _ASM_X86_PERF_EVENT_H
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#define _ASM_X86_PERF_EVENT_H
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/*
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* Performance event hw details:
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*/
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#define INTEL_PMC_MAX_GENERIC 32
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#define INTEL_PMC_MAX_FIXED 3
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#define INTEL_PMC_IDX_FIXED 32
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#define X86_PMC_IDX_MAX 64
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#define MSR_ARCH_PERFMON_PERFCTR0 0xc1
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#define MSR_ARCH_PERFMON_PERFCTR1 0xc2
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#define MSR_ARCH_PERFMON_EVENTSEL0 0x186
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#define MSR_ARCH_PERFMON_EVENTSEL1 0x187
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#define ARCH_PERFMON_EVENTSEL_EVENT 0x000000FFULL
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#define ARCH_PERFMON_EVENTSEL_UMASK 0x0000FF00ULL
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#define ARCH_PERFMON_EVENTSEL_USR (1ULL << 16)
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#define ARCH_PERFMON_EVENTSEL_OS (1ULL << 17)
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#define ARCH_PERFMON_EVENTSEL_EDGE (1ULL << 18)
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#define ARCH_PERFMON_EVENTSEL_PIN_CONTROL (1ULL << 19)
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#define ARCH_PERFMON_EVENTSEL_INT (1ULL << 20)
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#define ARCH_PERFMON_EVENTSEL_ANY (1ULL << 21)
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#define ARCH_PERFMON_EVENTSEL_ENABLE (1ULL << 22)
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#define ARCH_PERFMON_EVENTSEL_INV (1ULL << 23)
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#define ARCH_PERFMON_EVENTSEL_CMASK 0xFF000000ULL
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#define AMD_PERFMON_EVENTSEL_GUESTONLY (1ULL << 40)
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#define AMD_PERFMON_EVENTSEL_HOSTONLY (1ULL << 41)
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#define AMD64_EVENTSEL_EVENT \
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(ARCH_PERFMON_EVENTSEL_EVENT | (0x0FULL << 32))
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#define INTEL_ARCH_EVENT_MASK \
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(ARCH_PERFMON_EVENTSEL_UMASK | ARCH_PERFMON_EVENTSEL_EVENT)
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#define X86_RAW_EVENT_MASK \
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(ARCH_PERFMON_EVENTSEL_EVENT | \
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ARCH_PERFMON_EVENTSEL_UMASK | \
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ARCH_PERFMON_EVENTSEL_EDGE | \
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ARCH_PERFMON_EVENTSEL_INV | \
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ARCH_PERFMON_EVENTSEL_CMASK)
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#define AMD64_RAW_EVENT_MASK \
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(X86_RAW_EVENT_MASK | \
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AMD64_EVENTSEL_EVENT)
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#define AMD64_NUM_COUNTERS 4
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#define AMD64_NUM_COUNTERS_CORE 6
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#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_SEL 0x3c
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#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_UMASK (0x00 << 8)
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#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX 0
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#define ARCH_PERFMON_UNHALTED_CORE_CYCLES_PRESENT \
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(1 << (ARCH_PERFMON_UNHALTED_CORE_CYCLES_INDEX))
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#define ARCH_PERFMON_BRANCH_MISSES_RETIRED 6
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#define ARCH_PERFMON_EVENTS_COUNT 7
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/*
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* Intel "Architectural Performance Monitoring" CPUID
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* detection/enumeration details:
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*/
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union cpuid10_eax {
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struct {
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unsigned int version_id:8;
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unsigned int num_counters:8;
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unsigned int bit_width:8;
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unsigned int mask_length:8;
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} split;
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unsigned int full;
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};
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union cpuid10_ebx {
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struct {
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unsigned int no_unhalted_core_cycles:1;
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unsigned int no_instructions_retired:1;
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unsigned int no_unhalted_reference_cycles:1;
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unsigned int no_llc_reference:1;
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unsigned int no_llc_misses:1;
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unsigned int no_branch_instruction_retired:1;
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unsigned int no_branch_misses_retired:1;
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} split;
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unsigned int full;
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};
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union cpuid10_edx {
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struct {
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unsigned int num_counters_fixed:5;
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unsigned int bit_width_fixed:8;
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unsigned int reserved:19;
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} split;
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unsigned int full;
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};
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struct x86_pmu_capability {
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int version;
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int num_counters_gp;
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int num_counters_fixed;
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int bit_width_gp;
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int bit_width_fixed;
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unsigned int events_mask;
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int events_mask_len;
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};
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/*
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* Fixed-purpose performance events:
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*/
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/*
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* All 3 fixed-mode PMCs are configured via this single MSR:
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*/
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#define MSR_ARCH_PERFMON_FIXED_CTR_CTRL 0x38d
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/*
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* The counts are available in three separate MSRs:
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*/
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/* Instr_Retired.Any: */
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#define MSR_ARCH_PERFMON_FIXED_CTR0 0x309
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#define INTEL_PMC_IDX_FIXED_INSTRUCTIONS (INTEL_PMC_IDX_FIXED + 0)
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/* CPU_CLK_Unhalted.Core: */
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#define MSR_ARCH_PERFMON_FIXED_CTR1 0x30a
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#define INTEL_PMC_IDX_FIXED_CPU_CYCLES (INTEL_PMC_IDX_FIXED + 1)
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/* CPU_CLK_Unhalted.Ref: */
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#define MSR_ARCH_PERFMON_FIXED_CTR2 0x30b
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#define INTEL_PMC_IDX_FIXED_REF_CYCLES (INTEL_PMC_IDX_FIXED + 2)
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#define INTEL_PMC_MSK_FIXED_REF_CYCLES (1ULL << INTEL_PMC_IDX_FIXED_REF_CYCLES)
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/*
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* We model BTS tracing as another fixed-mode PMC.
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*
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* We choose a value in the middle of the fixed event range, since lower
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* values are used by actual fixed events and higher values are used
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* to indicate other overflow conditions in the PERF_GLOBAL_STATUS msr.
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*/
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#define INTEL_PMC_IDX_FIXED_BTS (INTEL_PMC_IDX_FIXED + 16)
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/*
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* IBS cpuid feature detection
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*/
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#define IBS_CPUID_FEATURES 0x8000001b
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/*
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* Same bit mask as for IBS cpuid feature flags (Fn8000_001B_EAX), but
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* bit 0 is used to indicate the existence of IBS.
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*/
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#define IBS_CAPS_AVAIL (1U<<0)
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#define IBS_CAPS_FETCHSAM (1U<<1)
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#define IBS_CAPS_OPSAM (1U<<2)
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#define IBS_CAPS_RDWROPCNT (1U<<3)
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#define IBS_CAPS_OPCNT (1U<<4)
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#define IBS_CAPS_BRNTRGT (1U<<5)
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#define IBS_CAPS_OPCNTEXT (1U<<6)
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#define IBS_CAPS_RIPINVALIDCHK (1U<<7)
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#define IBS_CAPS_DEFAULT (IBS_CAPS_AVAIL \
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| IBS_CAPS_FETCHSAM \
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| IBS_CAPS_OPSAM)
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/*
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* IBS APIC setup
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*/
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#define IBSCTL 0x1cc
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#define IBSCTL_LVT_OFFSET_VALID (1ULL<<8)
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#define IBSCTL_LVT_OFFSET_MASK 0x0F
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/* ibs fetch bits/masks */
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#define IBS_FETCH_RAND_EN (1ULL<<57)
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#define IBS_FETCH_VAL (1ULL<<49)
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#define IBS_FETCH_ENABLE (1ULL<<48)
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#define IBS_FETCH_CNT 0xFFFF0000ULL
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#define IBS_FETCH_MAX_CNT 0x0000FFFFULL
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/* ibs op bits/masks */
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/* lower 4 bits of the current count are ignored: */
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#define IBS_OP_CUR_CNT (0xFFFF0ULL<<32)
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#define IBS_OP_CNT_CTL (1ULL<<19)
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#define IBS_OP_VAL (1ULL<<18)
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#define IBS_OP_ENABLE (1ULL<<17)
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#define IBS_OP_MAX_CNT 0x0000FFFFULL
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#define IBS_OP_MAX_CNT_EXT 0x007FFFFFULL /* not a register bit mask */
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#define IBS_RIP_INVALID (1ULL<<38)
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#ifdef CONFIG_X86_LOCAL_APIC
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extern u32 get_ibs_caps(void);
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#else
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static inline u32 get_ibs_caps(void) { return 0; }
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#endif
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#ifdef CONFIG_PERF_EVENTS
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extern void perf_events_lapic_init(void);
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/*
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* Abuse bits {3,5} of the cpu eflags register. These flags are otherwise
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* unused and ABI specified to be 0, so nobody should care what we do with
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* them.
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*
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* EXACT - the IP points to the exact instruction that triggered the
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* event (HW bugs exempt).
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* VM - original X86_VM_MASK; see set_linear_ip().
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*/
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#define PERF_EFLAGS_EXACT (1UL << 3)
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#define PERF_EFLAGS_VM (1UL << 5)
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struct pt_regs;
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extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
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extern unsigned long perf_misc_flags(struct pt_regs *regs);
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#define perf_misc_flags(regs) perf_misc_flags(regs)
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#include <asm/stacktrace.h>
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/*
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* We abuse bit 3 from flags to pass exact information, see perf_misc_flags
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* and the comment with PERF_EFLAGS_EXACT.
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*/
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#define perf_arch_fetch_caller_regs(regs, __ip) { \
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(regs)->ip = (__ip); \
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(regs)->bp = caller_frame_pointer(); \
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(regs)->cs = __KERNEL_CS; \
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regs->flags = 0; \
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asm volatile( \
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_ASM_MOV "%%"_ASM_SP ", %0\n" \
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: "=m" ((regs)->sp) \
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:: "memory" \
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); \
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}
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struct perf_guest_switch_msr {
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unsigned msr;
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u64 host, guest;
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};
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extern struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr);
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extern void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap);
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extern void perf_check_microcode(void);
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#else
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static inline struct perf_guest_switch_msr *perf_guest_get_msrs(int *nr)
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{
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*nr = 0;
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return NULL;
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}
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static inline void perf_get_x86_pmu_capability(struct x86_pmu_capability *cap)
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{
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memset(cap, 0, sizeof(*cap));
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}
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static inline void perf_events_lapic_init(void) { }
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static inline void perf_check_microcode(void) { }
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#endif
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#if defined(CONFIG_PERF_EVENTS) && defined(CONFIG_CPU_SUP_AMD)
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extern void amd_pmu_enable_virt(void);
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extern void amd_pmu_disable_virt(void);
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#else
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static inline void amd_pmu_enable_virt(void) { }
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static inline void amd_pmu_disable_virt(void) { }
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#endif
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#define arch_perf_out_copy_user copy_from_user_nmi
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#endif /* _ASM_X86_PERF_EVENT_H */
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