To remove code duplication, use the binary stats descriptors for debugfs interface for KVM stats. Then we only have one stats definitions for both binary and debugfs interface.
Signed-off-by: Jing Zhang jingzhangos@google.com --- arch/arm64/kvm/guest.c | 16 ------ arch/mips/kvm/mips.c | 39 -------------- arch/powerpc/kvm/book3s.c | 33 ------------ arch/powerpc/kvm/booke.c | 25 --------- arch/s390/kvm/kvm-s390.c | 108 -------------------------------------- arch/x86/kvm/x86.c | 49 +---------------- include/linux/kvm_host.h | 43 +++++---------- include/uapi/linux/kvm.h | 4 +- virt/kvm/kvm_main.c | 104 ++++++++++++++++++++++++++---------- 9 files changed, 94 insertions(+), 327 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 59cb1cfe5b1e..efc76846b5a0 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -62,22 +62,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT("hvc_exit_stat", hvc_exit_stat), - VCPU_STAT("wfe_exit_stat", wfe_exit_stat), - VCPU_STAT("wfi_exit_stat", wfi_exit_stat), - VCPU_STAT("mmio_exit_user", mmio_exit_user), - VCPU_STAT("mmio_exit_kernel", mmio_exit_kernel), - VCPU_STAT("exits", exits), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - { NULL } -}; - static bool core_reg_offset_is_vreg(u64 off) { return off >= KVM_REG_ARM_CORE_REG(fp_regs.vregs) && diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index c748fa0d1411..24782904d9a2 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -95,45 +95,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("wait", wait_exits), - VCPU_STAT("cache", cache_exits), - VCPU_STAT("signal", signal_exits), - VCPU_STAT("interrupt", int_exits), - VCPU_STAT("cop_unusable", cop_unusable_exits), - VCPU_STAT("tlbmod", tlbmod_exits), - VCPU_STAT("tlbmiss_ld", tlbmiss_ld_exits), - VCPU_STAT("tlbmiss_st", tlbmiss_st_exits), - VCPU_STAT("addrerr_st", addrerr_st_exits), - VCPU_STAT("addrerr_ld", addrerr_ld_exits), - VCPU_STAT("syscall", syscall_exits), - VCPU_STAT("resvd_inst", resvd_inst_exits), - VCPU_STAT("break_inst", break_inst_exits), - VCPU_STAT("trap_inst", trap_inst_exits), - VCPU_STAT("msa_fpe", msa_fpe_exits), - VCPU_STAT("fpe", fpe_exits), - VCPU_STAT("msa_disabled", msa_disabled_exits), - VCPU_STAT("flush_dcache", flush_dcache_exits), - VCPU_STAT("vz_gpsi", vz_gpsi_exits), - VCPU_STAT("vz_gsfc", vz_gsfc_exits), - VCPU_STAT("vz_hc", vz_hc_exits), - VCPU_STAT("vz_grr", vz_grr_exits), - VCPU_STAT("vz_gva", vz_gva_exits), - VCPU_STAT("vz_ghfc", vz_ghfc_exits), - VCPU_STAT("vz_gpa", vz_gpa_exits), - VCPU_STAT("vz_resvd", vz_resvd_exits), -#ifdef CONFIG_CPU_LOONGSON64 - VCPU_STAT("vz_cpucfg", vz_cpucfg_exits), -#endif - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - {NULL} -}; - bool kvm_trace_guest_mode_change;
int kvm_guest_mode_change_trace_reg(void) diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 9aa05ac747ca..1eaf28ae43a9 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -98,39 +98,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("exits", sum_exits), - VCPU_STAT("mmio", mmio_exits), - VCPU_STAT("sig", signal_exits), - VCPU_STAT("sysc", syscall_exits), - VCPU_STAT("inst_emu", emulated_inst_exits), - VCPU_STAT("dec", dec_exits), - VCPU_STAT("ext_intr", ext_intr_exits), - VCPU_STAT("queue_intr", queue_intr), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - VCPU_STAT("halt_wait_ns", halt_wait_ns), - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT("halt_successful_wait", halt_successful_wait), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT("pf_storage", pf_storage), - VCPU_STAT("sp_storage", sp_storage), - VCPU_STAT("pf_instruc", pf_instruc), - VCPU_STAT("sp_instruc", sp_instruc), - VCPU_STAT("ld", ld), - VCPU_STAT("ld_slow", ld_slow), - VCPU_STAT("st", st), - VCPU_STAT("st_slow", st_slow), - VCPU_STAT("pthru_all", pthru_all), - VCPU_STAT("pthru_host", pthru_host), - VCPU_STAT("pthru_bad_aff", pthru_bad_aff), - VM_STAT("largepages_2M", num_2M_pages, .mode = 0444), - VM_STAT("largepages_1G", num_1G_pages, .mode = 0444), - { NULL } -}; - static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu, unsigned long pending_now, unsigned long old_pending) { diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index ef348773e89f..ef92c4aeb191 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -89,31 +89,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("mmio", mmio_exits), - VCPU_STAT("sig", signal_exits), - VCPU_STAT("itlb_r", itlb_real_miss_exits), - VCPU_STAT("itlb_v", itlb_virt_miss_exits), - VCPU_STAT("dtlb_r", dtlb_real_miss_exits), - VCPU_STAT("dtlb_v", dtlb_virt_miss_exits), - VCPU_STAT("sysc", syscall_exits), - VCPU_STAT("isi", isi_exits), - VCPU_STAT("dsi", dsi_exits), - VCPU_STAT("inst_emu", emulated_inst_exits), - VCPU_STAT("dec", dec_exits), - VCPU_STAT("ext_intr", ext_intr_exits), - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT("doorbell", dbell_exits), - VCPU_STAT("guest doorbell", gdbell_exits), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - VM_STAT_GENERIC("remote_tlb_flush", remote_tlb_flush), - { NULL } -}; - /* TODO: use vcpu_printf() */ void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu) { diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c index 8a9c2b0940cd..bc1d42dcf12d 100644 --- a/arch/s390/kvm/kvm-s390.c +++ b/arch/s390/kvm/kvm-s390.c @@ -184,114 +184,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("userspace_handled", exit_userspace), - VCPU_STAT("exit_null", exit_null), - VCPU_STAT("pfault_sync", pfault_sync), - VCPU_STAT("exit_validity", exit_validity), - VCPU_STAT("exit_stop_request", exit_stop_request), - VCPU_STAT("exit_external_request", exit_external_request), - VCPU_STAT("exit_io_request", exit_io_request), - VCPU_STAT("exit_external_interrupt", exit_external_interrupt), - VCPU_STAT("exit_instruction", exit_instruction), - VCPU_STAT("exit_pei", exit_pei), - VCPU_STAT("exit_program_interruption", exit_program_interruption), - VCPU_STAT("exit_instr_and_program_int", exit_instr_and_program), - VCPU_STAT("exit_operation_exception", exit_operation_exception), - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT("halt_no_poll_steal", halt_no_poll_steal), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - VCPU_STAT("instruction_lctlg", instruction_lctlg), - VCPU_STAT("instruction_lctl", instruction_lctl), - VCPU_STAT("instruction_stctl", instruction_stctl), - VCPU_STAT("instruction_stctg", instruction_stctg), - VCPU_STAT("deliver_ckc", deliver_ckc), - VCPU_STAT("deliver_cputm", deliver_cputm), - VCPU_STAT("deliver_emergency_signal", deliver_emergency_signal), - VCPU_STAT("deliver_external_call", deliver_external_call), - VCPU_STAT("deliver_service_signal", deliver_service_signal), - VCPU_STAT("deliver_virtio", deliver_virtio), - VCPU_STAT("deliver_stop_signal", deliver_stop_signal), - VCPU_STAT("deliver_prefix_signal", deliver_prefix_signal), - VCPU_STAT("deliver_restart_signal", deliver_restart_signal), - VCPU_STAT("deliver_program", deliver_program), - VCPU_STAT("deliver_io", deliver_io), - VCPU_STAT("deliver_machine_check", deliver_machine_check), - VCPU_STAT("exit_wait_state", exit_wait_state), - VCPU_STAT("inject_ckc", inject_ckc), - VCPU_STAT("inject_cputm", inject_cputm), - VCPU_STAT("inject_external_call", inject_external_call), - VM_STAT("inject_float_mchk", inject_float_mchk), - VCPU_STAT("inject_emergency_signal", inject_emergency_signal), - VM_STAT("inject_io", inject_io), - VCPU_STAT("inject_mchk", inject_mchk), - VM_STAT("inject_pfault_done", inject_pfault_done), - VCPU_STAT("inject_program", inject_program), - VCPU_STAT("inject_restart", inject_restart), - VM_STAT("inject_service_signal", inject_service_signal), - VCPU_STAT("inject_set_prefix", inject_set_prefix), - VCPU_STAT("inject_stop_signal", inject_stop_signal), - VCPU_STAT("inject_pfault_init", inject_pfault_init), - VM_STAT("inject_virtio", inject_virtio), - VCPU_STAT("instruction_epsw", instruction_epsw), - VCPU_STAT("instruction_gs", instruction_gs), - VCPU_STAT("instruction_io_other", instruction_io_other), - VCPU_STAT("instruction_lpsw", instruction_lpsw), - VCPU_STAT("instruction_lpswe", instruction_lpswe), - VCPU_STAT("instruction_pfmf", instruction_pfmf), - VCPU_STAT("instruction_ptff", instruction_ptff), - VCPU_STAT("instruction_stidp", instruction_stidp), - VCPU_STAT("instruction_sck", instruction_sck), - VCPU_STAT("instruction_sckpf", instruction_sckpf), - VCPU_STAT("instruction_spx", instruction_spx), - VCPU_STAT("instruction_stpx", instruction_stpx), - VCPU_STAT("instruction_stap", instruction_stap), - VCPU_STAT("instruction_iske", instruction_iske), - VCPU_STAT("instruction_ri", instruction_ri), - VCPU_STAT("instruction_rrbe", instruction_rrbe), - VCPU_STAT("instruction_sske", instruction_sske), - VCPU_STAT("instruction_ipte_interlock", instruction_ipte_interlock), - VCPU_STAT("instruction_essa", instruction_essa), - VCPU_STAT("instruction_stsi", instruction_stsi), - VCPU_STAT("instruction_stfl", instruction_stfl), - VCPU_STAT("instruction_tb", instruction_tb), - VCPU_STAT("instruction_tpi", instruction_tpi), - VCPU_STAT("instruction_tprot", instruction_tprot), - VCPU_STAT("instruction_tsch", instruction_tsch), - VCPU_STAT("instruction_sthyi", instruction_sthyi), - VCPU_STAT("instruction_sie", instruction_sie), - VCPU_STAT("instruction_sigp_sense", instruction_sigp_sense), - VCPU_STAT("instruction_sigp_sense_running", instruction_sigp_sense_running), - VCPU_STAT("instruction_sigp_external_call", instruction_sigp_external_call), - VCPU_STAT("instruction_sigp_emergency", instruction_sigp_emergency), - VCPU_STAT("instruction_sigp_cond_emergency", instruction_sigp_cond_emergency), - VCPU_STAT("instruction_sigp_start", instruction_sigp_start), - VCPU_STAT("instruction_sigp_stop", instruction_sigp_stop), - VCPU_STAT("instruction_sigp_stop_store_status", instruction_sigp_stop_store_status), - VCPU_STAT("instruction_sigp_store_status", instruction_sigp_store_status), - VCPU_STAT("instruction_sigp_store_adtl_status", instruction_sigp_store_adtl_status), - VCPU_STAT("instruction_sigp_set_arch", instruction_sigp_arch), - VCPU_STAT("instruction_sigp_set_prefix", instruction_sigp_prefix), - VCPU_STAT("instruction_sigp_restart", instruction_sigp_restart), - VCPU_STAT("instruction_sigp_cpu_reset", instruction_sigp_cpu_reset), - VCPU_STAT("instruction_sigp_init_cpu_reset", instruction_sigp_init_cpu_reset), - VCPU_STAT("instruction_sigp_unknown", instruction_sigp_unknown), - VCPU_STAT("instruction_diag_10", diagnose_10), - VCPU_STAT("instruction_diag_44", diagnose_44), - VCPU_STAT("instruction_diag_9c", diagnose_9c), - VCPU_STAT("diag_9c_ignored", diagnose_9c_ignored), - VCPU_STAT("diag_9c_forward", diagnose_9c_forward), - VCPU_STAT("instruction_diag_258", diagnose_258), - VCPU_STAT("instruction_diag_308", diagnose_308), - VCPU_STAT("instruction_diag_500", diagnose_500), - VCPU_STAT("instruction_diag_other", diagnose_other), - { NULL } -}; - /* allow nested virtualization in KVM (if enabled by user space) */ static int nested; module_param(nested, int, S_IRUGO); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 086a1ebcbfbe..c1829e014c43 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -234,7 +234,7 @@ struct _kvm_stats_desc kvm_vm_stats_desc[] = { STATS_DESC_ICOUNTER(VM, mmu_unsync), STATS_DESC_ICOUNTER(VM, lpages), STATS_DESC_ICOUNTER(VM, nx_lpage_splits), - STATS_DESC_ICOUNTER(VM, max_mmu_page_hash_collisions) + STATS_DESC_PCOUNTER(VM, max_mmu_page_hash_collisions) }; static_assert(ARRAY_SIZE(kvm_vm_stats_desc) == sizeof(struct kvm_vm_stat) / sizeof(u64)); @@ -287,53 +287,6 @@ struct kvm_stats_header kvm_vcpu_stats_header = { sizeof(kvm_vcpu_stats_desc), };
-struct kvm_stats_debugfs_item debugfs_entries[] = { - VCPU_STAT("pf_fixed", pf_fixed), - VCPU_STAT("pf_guest", pf_guest), - VCPU_STAT("tlb_flush", tlb_flush), - VCPU_STAT("invlpg", invlpg), - VCPU_STAT("exits", exits), - VCPU_STAT("io_exits", io_exits), - VCPU_STAT("mmio_exits", mmio_exits), - VCPU_STAT("signal_exits", signal_exits), - VCPU_STAT("irq_window", irq_window_exits), - VCPU_STAT("nmi_window", nmi_window_exits), - VCPU_STAT("halt_exits", halt_exits), - VCPU_STAT_GENERIC("halt_successful_poll", halt_successful_poll), - VCPU_STAT_GENERIC("halt_attempted_poll", halt_attempted_poll), - VCPU_STAT_GENERIC("halt_poll_invalid", halt_poll_invalid), - VCPU_STAT_GENERIC("halt_wakeup", halt_wakeup), - VCPU_STAT("hypercalls", hypercalls), - VCPU_STAT("request_irq", request_irq_exits), - VCPU_STAT("irq_exits", irq_exits), - VCPU_STAT("host_state_reload", host_state_reload), - VCPU_STAT("fpu_reload", fpu_reload), - VCPU_STAT("insn_emulation", insn_emulation), - VCPU_STAT("insn_emulation_fail", insn_emulation_fail), - VCPU_STAT("irq_injections", irq_injections), - VCPU_STAT("nmi_injections", nmi_injections), - VCPU_STAT("req_event", req_event), - VCPU_STAT("l1d_flush", l1d_flush), - VCPU_STAT_GENERIC("halt_poll_success_ns", halt_poll_success_ns), - VCPU_STAT_GENERIC("halt_poll_fail_ns", halt_poll_fail_ns), - VCPU_STAT("nested_run", nested_run), - VCPU_STAT("directed_yield_attempted", directed_yield_attempted), - VCPU_STAT("directed_yield_successful", directed_yield_successful), - VCPU_STAT("guest_mode", guest_mode), - VM_STAT("mmu_shadow_zapped", mmu_shadow_zapped), - VM_STAT("mmu_pte_write", mmu_pte_write), - VM_STAT("mmu_pde_zapped", mmu_pde_zapped), - VM_STAT("mmu_flooded", mmu_flooded), - VM_STAT("mmu_recycled", mmu_recycled), - VM_STAT("mmu_cache_miss", mmu_cache_miss), - VM_STAT("mmu_unsync", mmu_unsync), - VM_STAT_GENERIC("remote_tlb_flush", remote_tlb_flush), - VM_STAT("largepages", lpages, .mode = 0444), - VM_STAT("nx_largepages_splitted", nx_lpage_splits, .mode = 0444), - VM_STAT("max_mmu_page_hash_collisions", max_mmu_page_hash_collisions), - { NULL } -}; - u64 __read_mostly host_xcr0; u64 __read_mostly supported_xcr0; EXPORT_SYMBOL_GPL(supported_xcr0); diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index dd7709fd2f73..4501a40fd19b 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -1264,14 +1264,8 @@ enum kvm_stat_kind {
struct kvm_stat_data { struct kvm *kvm; - struct kvm_stats_debugfs_item *dbgfs_item; -}; - -struct kvm_stats_debugfs_item { - const char *name; - int offset; + struct _kvm_stats_desc *desc; enum kvm_stat_kind kind; - int mode; };
#define KVM_STATS_NAME_LEN 48 @@ -1280,24 +1274,11 @@ struct _kvm_stats_desc { char name[KVM_STATS_NAME_LEN]; };
-#define KVM_DBGFS_GET_MODE(dbgfs_item) \ - ((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644) - -#define VM_STAT(n, x, ...) \ - { n, offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__ } -#define VCPU_STAT(n, x, ...) \ - { n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ } -#define VM_STAT_GENERIC(n, x, ...) \ - { n, offsetof(struct kvm, stat.generic.x), KVM_STAT_VM, ## __VA_ARGS__ } -#define VCPU_STAT_GENERIC(n, x, ...) \ - { n, offsetof(struct kvm_vcpu, stat.generic.x), \ - KVM_STAT_VCPU, ## __VA_ARGS__ } - #define STATS_DESC_COMMON(type, unit, base, exp) \ .flags = type | unit | base | \ - BUILD_BUG_ON_ZERO(type & ~KVM_STATS_TYPE_MASK) | \ - BUILD_BUG_ON_ZERO(unit & ~KVM_STATS_UNIT_MASK) | \ - BUILD_BUG_ON_ZERO(base & ~KVM_STATS_BASE_MASK), \ + BUILD_BUG_ON_ZERO(type & ~KVM_STATS_TYPE_MASK) | \ + BUILD_BUG_ON_ZERO(unit & ~KVM_STATS_UNIT_MASK) | \ + BUILD_BUG_ON_ZERO(base & ~KVM_STATS_BASE_MASK), \ .exponent = exp, \ .size = 1
@@ -1338,19 +1319,24 @@ struct _kvm_stats_desc { SCOPE##_STATS_DESC(stat, type, unit, base, exp)
#define STATS_DESC_CUMULATIVE(SCOPE, name, unit, base, exponent) \ - STATS_DESC(SCOPE, name, KVM_STATS_TYPE_CUMULATIVE, \ - unit, base, exponent) + STATS_DESC(SCOPE, name, KVM_STATS_TYPE_CUMULATIVE, unit, base, exponent) #define STATS_DESC_INSTANT(SCOPE, name, unit, base, exponent) \ - STATS_DESC(SCOPE, name, KVM_STATS_TYPE_INSTANT, unit, base, exponent) \ + STATS_DESC(SCOPE, name, KVM_STATS_TYPE_INSTANT, unit, base, exponent) +#define STATS_DESC_PEAK(SCOPE, name, unit, base, exponent) \ + STATS_DESC(SCOPE, name, KVM_STATS_TYPE_PEAK, unit, base, exponent)
-/* Cumulative counter */ +/* Cumulative read/write counter */ #define STATS_DESC_COUNTER(SCOPE, name) \ STATS_DESC_CUMULATIVE(SCOPE, name, KVM_STATS_UNIT_NONE, \ KVM_STATS_BASE_POW10, 0) -/* Instantaneous counter */ +/* Instantaneous read only counter */ #define STATS_DESC_ICOUNTER(SCOPE, name) \ STATS_DESC_INSTANT(SCOPE, name, KVM_STATS_UNIT_NONE, \ KVM_STATS_BASE_POW10, 0) +/* Instantaneous read/write counter */ +#define STATS_DESC_PCOUNTER(SCOPE, name) \ + STATS_DESC_PEAK(SCOPE, name, KVM_STATS_UNIT_NONE, \ + KVM_STATS_BASE_POW10, 0)
/* Cumulative clock cycles */ #define STATS_DESC_CYCLE(SCOPE, name) \ @@ -1440,7 +1426,6 @@ struct _kvm_stats_desc { STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_success_ns), \ STATS_DESC_TIME_NSEC(VCPU_GENERIC, halt_poll_fail_ns)
-extern struct kvm_stats_debugfs_item debugfs_entries[]; extern struct dentry *kvm_debugfs_dir; ssize_t kvm_stats_read(char *id, struct kvm_stats_header *header, struct _kvm_stats_desc *desc, void *stats, size_t size_stats, diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index ab73e905105c..26f77909502b 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -1920,7 +1920,9 @@ struct kvm_stats_header { #define KVM_STATS_TYPE_MASK (0xF << KVM_STATS_TYPE_SHIFT) #define KVM_STATS_TYPE_CUMULATIVE (0x0 << KVM_STATS_TYPE_SHIFT) #define KVM_STATS_TYPE_INSTANT (0x1 << KVM_STATS_TYPE_SHIFT) -#define KVM_STATS_TYPE_MAX KVM_STATS_TYPE_INSTANT +/* Peak type is used as read/write instant counters */ +#define KVM_STATS_TYPE_PEAK (0x2 << KVM_STATS_TYPE_SHIFT) +#define KVM_STATS_TYPE_MAX KVM_STATS_TYPE_PEAK
#define KVM_STATS_UNIT_SHIFT 4 #define KVM_STATS_UNIT_MASK (0xF << KVM_STATS_UNIT_SHIFT) diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 5f9d566db1c4..221ca7f4cc30 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -115,7 +115,6 @@ static DEFINE_PER_CPU(struct kvm_vcpu *, kvm_running_vcpu); struct dentry *kvm_debugfs_dir; EXPORT_SYMBOL_GPL(kvm_debugfs_dir);
-static int kvm_debugfs_num_entries; static const struct file_operations stat_fops_per_vm;
static long kvm_vcpu_ioctl(struct file *file, unsigned int ioctl, @@ -860,9 +859,24 @@ static void kvm_free_memslots(struct kvm *kvm, struct kvm_memslots *slots) kvfree(slots); }
+static umode_t kvm_stats_debugfs_mode(struct _kvm_stats_desc *pdesc) +{ + switch (pdesc->desc.flags & KVM_STATS_TYPE_MASK) { + case KVM_STATS_TYPE_INSTANT: + return 0444; + case KVM_STATS_TYPE_CUMULATIVE: + case KVM_STATS_TYPE_PEAK: + default: + return 0644; + } +} + + static void kvm_destroy_vm_debugfs(struct kvm *kvm) { int i; + int kvm_debugfs_num_entries = kvm_vm_stats_header.count + + kvm_vcpu_stats_header.count;
if (!kvm->debugfs_dentry) return; @@ -880,7 +894,10 @@ static int kvm_create_vm_debugfs(struct kvm *kvm, int fd) { char dir_name[ITOA_MAX_LEN * 2]; struct kvm_stat_data *stat_data; - struct kvm_stats_debugfs_item *p; + struct _kvm_stats_desc *pdesc; + int i; + int kvm_debugfs_num_entries = kvm_vm_stats_header.count + + kvm_vcpu_stats_header.count;
if (!debugfs_initialized()) return 0; @@ -894,15 +911,32 @@ static int kvm_create_vm_debugfs(struct kvm *kvm, int fd) if (!kvm->debugfs_stat_data) return -ENOMEM;
- for (p = debugfs_entries; p->name; p++) { + for (i = 0; i < kvm_vm_stats_header.count; ++i) { + pdesc = &kvm_vm_stats_desc[i]; stat_data = kzalloc(sizeof(*stat_data), GFP_KERNEL_ACCOUNT); if (!stat_data) return -ENOMEM;
stat_data->kvm = kvm; - stat_data->dbgfs_item = p; - kvm->debugfs_stat_data[p - debugfs_entries] = stat_data; - debugfs_create_file(p->name, KVM_DBGFS_GET_MODE(p), + stat_data->desc = pdesc; + stat_data->kind = KVM_STAT_VM; + kvm->debugfs_stat_data[i] = stat_data; + debugfs_create_file(pdesc->name, kvm_stats_debugfs_mode(pdesc), + kvm->debugfs_dentry, stat_data, + &stat_fops_per_vm); + } + + for (i = 0; i < kvm_vcpu_stats_header.count; ++i) { + pdesc = &kvm_vcpu_stats_desc[i]; + stat_data = kzalloc(sizeof(*stat_data), GFP_KERNEL_ACCOUNT); + if (!stat_data) + return -ENOMEM; + + stat_data->kvm = kvm; + stat_data->desc = pdesc; + stat_data->kind = KVM_STAT_VCPU; + kvm->debugfs_stat_data[i] = stat_data; + debugfs_create_file(pdesc->name, kvm_stats_debugfs_mode(pdesc), kvm->debugfs_dentry, stat_data, &stat_fops_per_vm); } @@ -4901,7 +4935,7 @@ static int kvm_debugfs_open(struct inode *inode, struct file *file, return -ENOENT;
if (simple_attr_open(inode, file, get, - KVM_DBGFS_GET_MODE(stat_data->dbgfs_item) & 0222 + kvm_stats_debugfs_mode(stat_data->desc) & 0222 ? set : NULL, fmt)) { kvm_put_kvm(stat_data->kvm); @@ -4924,14 +4958,14 @@ static int kvm_debugfs_release(struct inode *inode, struct file *file)
static int kvm_get_stat_per_vm(struct kvm *kvm, size_t offset, u64 *val) { - *val = *(u64 *)((void *)kvm + offset); + *val = *(u64 *)((void *)(&kvm->stat) + offset);
return 0; }
static int kvm_clear_stat_per_vm(struct kvm *kvm, size_t offset) { - *(u64 *)((void *)kvm + offset) = 0; + *(u64 *)((void *)(&kvm->stat) + offset) = 0;
return 0; } @@ -4944,7 +4978,7 @@ static int kvm_get_stat_per_vcpu(struct kvm *kvm, size_t offset, u64 *val) *val = 0;
kvm_for_each_vcpu(i, vcpu, kvm) - *val += *(u64 *)((void *)vcpu + offset); + *val += *(u64 *)((void *)(&vcpu->stat) + offset);
return 0; } @@ -4955,7 +4989,7 @@ static int kvm_clear_stat_per_vcpu(struct kvm *kvm, size_t offset) struct kvm_vcpu *vcpu;
kvm_for_each_vcpu(i, vcpu, kvm) - *(u64 *)((void *)vcpu + offset) = 0; + *(u64 *)((void *)(&vcpu->stat) + offset) = 0;
return 0; } @@ -4965,14 +4999,14 @@ static int kvm_stat_data_get(void *data, u64 *val) int r = -EFAULT; struct kvm_stat_data *stat_data = (struct kvm_stat_data *)data;
- switch (stat_data->dbgfs_item->kind) { + switch (stat_data->kind) { case KVM_STAT_VM: r = kvm_get_stat_per_vm(stat_data->kvm, - stat_data->dbgfs_item->offset, val); + stat_data->desc->desc.offset, val); break; case KVM_STAT_VCPU: r = kvm_get_stat_per_vcpu(stat_data->kvm, - stat_data->dbgfs_item->offset, val); + stat_data->desc->desc.offset, val); break; }
@@ -4987,14 +5021,14 @@ static int kvm_stat_data_clear(void *data, u64 val) if (val) return -EINVAL;
- switch (stat_data->dbgfs_item->kind) { + switch (stat_data->kind) { case KVM_STAT_VM: r = kvm_clear_stat_per_vm(stat_data->kvm, - stat_data->dbgfs_item->offset); + stat_data->desc->desc.offset); break; case KVM_STAT_VCPU: r = kvm_clear_stat_per_vcpu(stat_data->kvm, - stat_data->dbgfs_item->offset); + stat_data->desc->desc.offset); break; }
@@ -5051,6 +5085,7 @@ static int vm_stat_clear(void *_offset, u64 val) }
DEFINE_SIMPLE_ATTRIBUTE(vm_stat_fops, vm_stat_get, vm_stat_clear, "%llu\n"); +DEFINE_SIMPLE_ATTRIBUTE(vm_stat_readonly_fops, vm_stat_get, NULL, "%llu\n");
static int vcpu_stat_get(void *_offset, u64 *val) { @@ -5087,11 +5122,7 @@ static int vcpu_stat_clear(void *_offset, u64 val)
DEFINE_SIMPLE_ATTRIBUTE(vcpu_stat_fops, vcpu_stat_get, vcpu_stat_clear, "%llu\n"); - -static const struct file_operations *stat_fops[] = { - [KVM_STAT_VCPU] = &vcpu_stat_fops, - [KVM_STAT_VM] = &vm_stat_fops, -}; +DEFINE_SIMPLE_ATTRIBUTE(vcpu_stat_readonly_fops, vcpu_stat_get, NULL, "%llu\n");
static void kvm_uevent_notify_change(unsigned int type, struct kvm *kvm) { @@ -5145,15 +5176,32 @@ static void kvm_uevent_notify_change(unsigned int type, struct kvm *kvm)
static void kvm_init_debug(void) { - struct kvm_stats_debugfs_item *p; + const struct file_operations *fops; + struct _kvm_stats_desc *pdesc; + int i;
kvm_debugfs_dir = debugfs_create_dir("kvm", NULL);
- kvm_debugfs_num_entries = 0; - for (p = debugfs_entries; p->name; ++p, kvm_debugfs_num_entries++) { - debugfs_create_file(p->name, KVM_DBGFS_GET_MODE(p), - kvm_debugfs_dir, (void *)(long)p->offset, - stat_fops[p->kind]); + for (i = 0; i < kvm_vm_stats_header.count; ++i) { + pdesc = &kvm_vm_stats_desc[i]; + if (kvm_stats_debugfs_mode(pdesc) & 0222) + fops = &vm_stat_fops; + else + fops = &vm_stat_readonly_fops; + debugfs_create_file(pdesc->name, kvm_stats_debugfs_mode(pdesc), + kvm_debugfs_dir, + (void *)(long)pdesc->desc.offset, fops); + } + + for (i = 0; i < kvm_vcpu_stats_header.count; ++i) { + pdesc = &kvm_vcpu_stats_desc[i]; + if (kvm_stats_debugfs_mode(pdesc) & 0222) + fops = &vcpu_stat_fops; + else + fops = &vcpu_stat_readonly_fops; + debugfs_create_file(pdesc->name, kvm_stats_debugfs_mode(pdesc), + kvm_debugfs_dir, + (void *)(long)pdesc->desc.offset, fops); } }