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| author | Jing Zhang <jingzhangos@google.com> | 2021-06-18 22:27:06 +0000 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2021-06-24 18:00:19 -0400 |
| commit | ce55c049459cff0034cc1bcfdce3bf343a2d6317 (patch) | |
| tree | cd3edc030d355ea7d871220124e25e8c60885f0a /arch/mips/kvm | |
| parent | fcfe1baeddbf1c7c448b44c82586d0cbc8abc9f5 (diff) | |
| download | linux-ce55c049459cff0034cc1bcfdce3bf343a2d6317.tar.gz linux-ce55c049459cff0034cc1bcfdce3bf343a2d6317.tar.bz2 linux-ce55c049459cff0034cc1bcfdce3bf343a2d6317.zip | |
KVM: stats: Support binary stats retrieval for a VCPU
Add a VCPU ioctl to get a statistics file descriptor by which a read
functionality is provided for userspace to read out VCPU stats header,
descriptors and data.
Define VCPU statistics descriptors and header for all architectures.
Reviewed-by: David Matlack <dmatlack@google.com>
Reviewed-by: Ricardo Koller <ricarkol@google.com>
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Reviewed-by: Fuad Tabba <tabba@google.com>
Tested-by: Fuad Tabba <tabba@google.com> #arm64
Signed-off-by: Jing Zhang <jingzhangos@google.com>
Message-Id: <20210618222709.1858088-5-jingzhangos@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/mips/kvm')
| -rw-r--r-- | arch/mips/kvm/mips.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c index 9f8b203737df..2aba78c2266d 100644 --- a/arch/mips/kvm/mips.c +++ b/arch/mips/kvm/mips.c @@ -53,6 +53,50 @@ const struct kvm_stats_header kvm_vm_stats_header = { sizeof(kvm_vm_stats_desc), }; +const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { + KVM_GENERIC_VCPU_STATS(), + STATS_DESC_COUNTER(VCPU, wait_exits), + STATS_DESC_COUNTER(VCPU, cache_exits), + STATS_DESC_COUNTER(VCPU, signal_exits), + STATS_DESC_COUNTER(VCPU, int_exits), + STATS_DESC_COUNTER(VCPU, cop_unusable_exits), + STATS_DESC_COUNTER(VCPU, tlbmod_exits), + STATS_DESC_COUNTER(VCPU, tlbmiss_ld_exits), + STATS_DESC_COUNTER(VCPU, tlbmiss_st_exits), + STATS_DESC_COUNTER(VCPU, addrerr_st_exits), + STATS_DESC_COUNTER(VCPU, addrerr_ld_exits), + STATS_DESC_COUNTER(VCPU, syscall_exits), + STATS_DESC_COUNTER(VCPU, resvd_inst_exits), + STATS_DESC_COUNTER(VCPU, break_inst_exits), + STATS_DESC_COUNTER(VCPU, trap_inst_exits), + STATS_DESC_COUNTER(VCPU, msa_fpe_exits), + STATS_DESC_COUNTER(VCPU, fpe_exits), + STATS_DESC_COUNTER(VCPU, msa_disabled_exits), + STATS_DESC_COUNTER(VCPU, flush_dcache_exits), + STATS_DESC_COUNTER(VCPU, vz_gpsi_exits), + STATS_DESC_COUNTER(VCPU, vz_gsfc_exits), + STATS_DESC_COUNTER(VCPU, vz_hc_exits), + STATS_DESC_COUNTER(VCPU, vz_grr_exits), + STATS_DESC_COUNTER(VCPU, vz_gva_exits), + STATS_DESC_COUNTER(VCPU, vz_ghfc_exits), + STATS_DESC_COUNTER(VCPU, vz_gpa_exits), + STATS_DESC_COUNTER(VCPU, vz_resvd_exits), +#ifdef CONFIG_CPU_LOONGSON64 + STATS_DESC_COUNTER(VCPU, vz_cpucfg_exits), +#endif +}; +static_assert(ARRAY_SIZE(kvm_vcpu_stats_desc) == + sizeof(struct kvm_vcpu_stat) / sizeof(u64)); + +const struct kvm_stats_header kvm_vcpu_stats_header = { + .name_size = KVM_STATS_NAME_SIZE, + .num_desc = ARRAY_SIZE(kvm_vcpu_stats_desc), + .id_offset = sizeof(struct kvm_stats_header), + .desc_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE, + .data_offset = sizeof(struct kvm_stats_header) + KVM_STATS_NAME_SIZE + + sizeof(kvm_vcpu_stats_desc), +}; + struct kvm_stats_debugfs_item debugfs_entries[] = { VCPU_STAT("wait", wait_exits), VCPU_STAT("cache", cache_exits), |