Subject: [PATCH v2] kvm_host: unify VM_STAT and VCPU_STAT definitions in a single place

The macros VM_STAT and VCPU_STAT are redundantly implemented in multiple
files, each used by a different architecure to initialize the debugfs
entries for statistics. Since they all have the same purpose, they can be
unified in a single common definition in include/linux/kvm_host.h

Signed-off-by: Emanuele Giuseppe Esposito <[email protected]>
---
arch/arm64/kvm/guest.c | 23 ++---
arch/mips/kvm/mips.c | 61 ++++++------
arch/powerpc/kvm/book3s.c | 61 ++++++------
arch/powerpc/kvm/booke.c | 41 ++++----
arch/s390/kvm/kvm-s390.c | 203 +++++++++++++++++++-------------------
arch/x86/kvm/x86.c | 80 +++++++--------
include/linux/kvm_host.h | 5 +
7 files changed, 231 insertions(+), 243 deletions(-)

diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 23ebe51410f0..8417b200bec9 100644
--- a/arch/arm64/kvm/guest.c
+++ b/arch/arm64/kvm/guest.c
@@ -29,20 +29,17 @@

#include "trace.h"

-#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x), KVM_STAT_VM }
-#define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
-
struct kvm_stats_debugfs_item debugfs_entries[] = {
- VCPU_STAT(halt_successful_poll),
- VCPU_STAT(halt_attempted_poll),
- VCPU_STAT(halt_poll_invalid),
- VCPU_STAT(halt_wakeup),
- VCPU_STAT(hvc_exit_stat),
- VCPU_STAT(wfe_exit_stat),
- VCPU_STAT(wfi_exit_stat),
- VCPU_STAT(mmio_exit_user),
- VCPU_STAT(mmio_exit_kernel),
- VCPU_STAT(exits),
+ VCPU_STAT("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("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),
{ NULL }
};

diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 8f05dd0a0f4e..fdf1c14d9205 100644
--- a/arch/mips/kvm/mips.c
+++ b/arch/mips/kvm/mips.c
@@ -39,40 +39,39 @@
#define VECTORSPACING 0x100 /* for EI/VI mode */
#endif

-#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x)
struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "wait", VCPU_STAT(wait_exits), KVM_STAT_VCPU },
- { "cache", VCPU_STAT(cache_exits), KVM_STAT_VCPU },
- { "signal", VCPU_STAT(signal_exits), KVM_STAT_VCPU },
- { "interrupt", VCPU_STAT(int_exits), KVM_STAT_VCPU },
- { "cop_unusable", VCPU_STAT(cop_unusable_exits), KVM_STAT_VCPU },
- { "tlbmod", VCPU_STAT(tlbmod_exits), KVM_STAT_VCPU },
- { "tlbmiss_ld", VCPU_STAT(tlbmiss_ld_exits), KVM_STAT_VCPU },
- { "tlbmiss_st", VCPU_STAT(tlbmiss_st_exits), KVM_STAT_VCPU },
- { "addrerr_st", VCPU_STAT(addrerr_st_exits), KVM_STAT_VCPU },
- { "addrerr_ld", VCPU_STAT(addrerr_ld_exits), KVM_STAT_VCPU },
- { "syscall", VCPU_STAT(syscall_exits), KVM_STAT_VCPU },
- { "resvd_inst", VCPU_STAT(resvd_inst_exits), KVM_STAT_VCPU },
- { "break_inst", VCPU_STAT(break_inst_exits), KVM_STAT_VCPU },
- { "trap_inst", VCPU_STAT(trap_inst_exits), KVM_STAT_VCPU },
- { "msa_fpe", VCPU_STAT(msa_fpe_exits), KVM_STAT_VCPU },
- { "fpe", VCPU_STAT(fpe_exits), KVM_STAT_VCPU },
- { "msa_disabled", VCPU_STAT(msa_disabled_exits), KVM_STAT_VCPU },
- { "flush_dcache", VCPU_STAT(flush_dcache_exits), KVM_STAT_VCPU },
+ 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),
#ifdef CONFIG_KVM_MIPS_VZ
- { "vz_gpsi", VCPU_STAT(vz_gpsi_exits), KVM_STAT_VCPU },
- { "vz_gsfc", VCPU_STAT(vz_gsfc_exits), KVM_STAT_VCPU },
- { "vz_hc", VCPU_STAT(vz_hc_exits), KVM_STAT_VCPU },
- { "vz_grr", VCPU_STAT(vz_grr_exits), KVM_STAT_VCPU },
- { "vz_gva", VCPU_STAT(vz_gva_exits), KVM_STAT_VCPU },
- { "vz_ghfc", VCPU_STAT(vz_ghfc_exits), KVM_STAT_VCPU },
- { "vz_gpa", VCPU_STAT(vz_gpa_exits), KVM_STAT_VCPU },
- { "vz_resvd", VCPU_STAT(vz_resvd_exits), KVM_STAT_VCPU },
+ 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),
#endif
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll), KVM_STAT_VCPU },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), KVM_STAT_VCPU },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid), KVM_STAT_VCPU },
- { "halt_wakeup", VCPU_STAT(halt_wakeup), KVM_STAT_VCPU },
+ VCPU_STAT("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("halt_wakeup", halt_wakeup),
{NULL}
};

diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 5690a1f9b976..37508a356f28 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -36,41 +36,38 @@
#include "book3s.h"
#include "trace.h"

-#define VM_STAT(x, ...) offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__
-#define VCPU_STAT(x, ...) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__
-
/* #define EXIT_DEBUG */

struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "exits", VCPU_STAT(sum_exits) },
- { "mmio", VCPU_STAT(mmio_exits) },
- { "sig", VCPU_STAT(signal_exits) },
- { "sysc", VCPU_STAT(syscall_exits) },
- { "inst_emu", VCPU_STAT(emulated_inst_exits) },
- { "dec", VCPU_STAT(dec_exits) },
- { "ext_intr", VCPU_STAT(ext_intr_exits) },
- { "queue_intr", VCPU_STAT(queue_intr) },
- { "halt_poll_success_ns", VCPU_STAT(halt_poll_success_ns) },
- { "halt_poll_fail_ns", VCPU_STAT(halt_poll_fail_ns) },
- { "halt_wait_ns", VCPU_STAT(halt_wait_ns) },
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
- { "halt_successful_wait", VCPU_STAT(halt_successful_wait) },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
- { "halt_wakeup", VCPU_STAT(halt_wakeup) },
- { "pf_storage", VCPU_STAT(pf_storage) },
- { "sp_storage", VCPU_STAT(sp_storage) },
- { "pf_instruc", VCPU_STAT(pf_instruc) },
- { "sp_instruc", VCPU_STAT(sp_instruc) },
- { "ld", VCPU_STAT(ld) },
- { "ld_slow", VCPU_STAT(ld_slow) },
- { "st", VCPU_STAT(st) },
- { "st_slow", VCPU_STAT(st_slow) },
- { "pthru_all", VCPU_STAT(pthru_all) },
- { "pthru_host", VCPU_STAT(pthru_host) },
- { "pthru_bad_aff", VCPU_STAT(pthru_bad_aff) },
- { "largepages_2M", VM_STAT(num_2M_pages, .mode = 0444) },
- { "largepages_1G", VM_STAT(num_1G_pages, .mode = 0444) },
+ 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("halt_poll_success_ns", halt_poll_success_ns),
+ VCPU_STAT("halt_poll_fail_ns", halt_poll_fail_ns),
+ VCPU_STAT("halt_wait_ns", halt_wait_ns),
+ VCPU_STAT("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_successful_wait", halt_successful_wait),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("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 }
};

diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 6c18ea88fd25..c2984cb6dfa7 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -35,29 +35,26 @@

unsigned long kvmppc_booke_handlers;

-#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
-#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
-
struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "mmio", VCPU_STAT(mmio_exits) },
- { "sig", VCPU_STAT(signal_exits) },
- { "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
- { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
- { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
- { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
- { "sysc", VCPU_STAT(syscall_exits) },
- { "isi", VCPU_STAT(isi_exits) },
- { "dsi", VCPU_STAT(dsi_exits) },
- { "inst_emu", VCPU_STAT(emulated_inst_exits) },
- { "dec", VCPU_STAT(dec_exits) },
- { "ext_intr", VCPU_STAT(ext_intr_exits) },
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
- { "halt_wakeup", VCPU_STAT(halt_wakeup) },
- { "doorbell", VCPU_STAT(dbell_exits) },
- { "guest doorbell", VCPU_STAT(gdbell_exits) },
- { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
+ 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("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("halt_wakeup", halt_wakeup),
+ VCPU_STAT("doorbell", dbell_exits),
+ VCPU_STAT("guest doorbell", gdbell_exits),
+ VM_STAT("remote_tlb_flush", remote_tlb_flush),
{ NULL }
};

diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 19a81024fe16..dbeb7da07f18 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -57,110 +57,107 @@
#define VCPU_IRQS_MAX_BUF (sizeof(struct kvm_s390_irq) * \
(KVM_MAX_VCPUS + LOCAL_IRQS))

-#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
-#define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
-
struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "userspace_handled", VCPU_STAT(exit_userspace) },
- { "exit_null", VCPU_STAT(exit_null) },
- { "exit_validity", VCPU_STAT(exit_validity) },
- { "exit_stop_request", VCPU_STAT(exit_stop_request) },
- { "exit_external_request", VCPU_STAT(exit_external_request) },
- { "exit_io_request", VCPU_STAT(exit_io_request) },
- { "exit_external_interrupt", VCPU_STAT(exit_external_interrupt) },
- { "exit_instruction", VCPU_STAT(exit_instruction) },
- { "exit_pei", VCPU_STAT(exit_pei) },
- { "exit_program_interruption", VCPU_STAT(exit_program_interruption) },
- { "exit_instr_and_program_int", VCPU_STAT(exit_instr_and_program) },
- { "exit_operation_exception", VCPU_STAT(exit_operation_exception) },
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
- { "halt_no_poll_steal", VCPU_STAT(halt_no_poll_steal) },
- { "halt_wakeup", VCPU_STAT(halt_wakeup) },
- { "instruction_lctlg", VCPU_STAT(instruction_lctlg) },
- { "instruction_lctl", VCPU_STAT(instruction_lctl) },
- { "instruction_stctl", VCPU_STAT(instruction_stctl) },
- { "instruction_stctg", VCPU_STAT(instruction_stctg) },
- { "deliver_ckc", VCPU_STAT(deliver_ckc) },
- { "deliver_cputm", VCPU_STAT(deliver_cputm) },
- { "deliver_emergency_signal", VCPU_STAT(deliver_emergency_signal) },
- { "deliver_external_call", VCPU_STAT(deliver_external_call) },
- { "deliver_service_signal", VCPU_STAT(deliver_service_signal) },
- { "deliver_virtio", VCPU_STAT(deliver_virtio) },
- { "deliver_stop_signal", VCPU_STAT(deliver_stop_signal) },
- { "deliver_prefix_signal", VCPU_STAT(deliver_prefix_signal) },
- { "deliver_restart_signal", VCPU_STAT(deliver_restart_signal) },
- { "deliver_program", VCPU_STAT(deliver_program) },
- { "deliver_io", VCPU_STAT(deliver_io) },
- { "deliver_machine_check", VCPU_STAT(deliver_machine_check) },
- { "exit_wait_state", VCPU_STAT(exit_wait_state) },
- { "inject_ckc", VCPU_STAT(inject_ckc) },
- { "inject_cputm", VCPU_STAT(inject_cputm) },
- { "inject_external_call", VCPU_STAT(inject_external_call) },
- { "inject_float_mchk", VM_STAT(inject_float_mchk) },
- { "inject_emergency_signal", VCPU_STAT(inject_emergency_signal) },
- { "inject_io", VM_STAT(inject_io) },
- { "inject_mchk", VCPU_STAT(inject_mchk) },
- { "inject_pfault_done", VM_STAT(inject_pfault_done) },
- { "inject_program", VCPU_STAT(inject_program) },
- { "inject_restart", VCPU_STAT(inject_restart) },
- { "inject_service_signal", VM_STAT(inject_service_signal) },
- { "inject_set_prefix", VCPU_STAT(inject_set_prefix) },
- { "inject_stop_signal", VCPU_STAT(inject_stop_signal) },
- { "inject_pfault_init", VCPU_STAT(inject_pfault_init) },
- { "inject_virtio", VM_STAT(inject_virtio) },
- { "instruction_epsw", VCPU_STAT(instruction_epsw) },
- { "instruction_gs", VCPU_STAT(instruction_gs) },
- { "instruction_io_other", VCPU_STAT(instruction_io_other) },
- { "instruction_lpsw", VCPU_STAT(instruction_lpsw) },
- { "instruction_lpswe", VCPU_STAT(instruction_lpswe) },
- { "instruction_pfmf", VCPU_STAT(instruction_pfmf) },
- { "instruction_ptff", VCPU_STAT(instruction_ptff) },
- { "instruction_stidp", VCPU_STAT(instruction_stidp) },
- { "instruction_sck", VCPU_STAT(instruction_sck) },
- { "instruction_sckpf", VCPU_STAT(instruction_sckpf) },
- { "instruction_spx", VCPU_STAT(instruction_spx) },
- { "instruction_stpx", VCPU_STAT(instruction_stpx) },
- { "instruction_stap", VCPU_STAT(instruction_stap) },
- { "instruction_iske", VCPU_STAT(instruction_iske) },
- { "instruction_ri", VCPU_STAT(instruction_ri) },
- { "instruction_rrbe", VCPU_STAT(instruction_rrbe) },
- { "instruction_sske", VCPU_STAT(instruction_sske) },
- { "instruction_ipte_interlock", VCPU_STAT(instruction_ipte_interlock) },
- { "instruction_essa", VCPU_STAT(instruction_essa) },
- { "instruction_stsi", VCPU_STAT(instruction_stsi) },
- { "instruction_stfl", VCPU_STAT(instruction_stfl) },
- { "instruction_tb", VCPU_STAT(instruction_tb) },
- { "instruction_tpi", VCPU_STAT(instruction_tpi) },
- { "instruction_tprot", VCPU_STAT(instruction_tprot) },
- { "instruction_tsch", VCPU_STAT(instruction_tsch) },
- { "instruction_sthyi", VCPU_STAT(instruction_sthyi) },
- { "instruction_sie", VCPU_STAT(instruction_sie) },
- { "instruction_sigp_sense", VCPU_STAT(instruction_sigp_sense) },
- { "instruction_sigp_sense_running", VCPU_STAT(instruction_sigp_sense_running) },
- { "instruction_sigp_external_call", VCPU_STAT(instruction_sigp_external_call) },
- { "instruction_sigp_emergency", VCPU_STAT(instruction_sigp_emergency) },
- { "instruction_sigp_cond_emergency", VCPU_STAT(instruction_sigp_cond_emergency) },
- { "instruction_sigp_start", VCPU_STAT(instruction_sigp_start) },
- { "instruction_sigp_stop", VCPU_STAT(instruction_sigp_stop) },
- { "instruction_sigp_stop_store_status", VCPU_STAT(instruction_sigp_stop_store_status) },
- { "instruction_sigp_store_status", VCPU_STAT(instruction_sigp_store_status) },
- { "instruction_sigp_store_adtl_status", VCPU_STAT(instruction_sigp_store_adtl_status) },
- { "instruction_sigp_set_arch", VCPU_STAT(instruction_sigp_arch) },
- { "instruction_sigp_set_prefix", VCPU_STAT(instruction_sigp_prefix) },
- { "instruction_sigp_restart", VCPU_STAT(instruction_sigp_restart) },
- { "instruction_sigp_cpu_reset", VCPU_STAT(instruction_sigp_cpu_reset) },
- { "instruction_sigp_init_cpu_reset", VCPU_STAT(instruction_sigp_init_cpu_reset) },
- { "instruction_sigp_unknown", VCPU_STAT(instruction_sigp_unknown) },
- { "instruction_diag_10", VCPU_STAT(diagnose_10) },
- { "instruction_diag_44", VCPU_STAT(diagnose_44) },
- { "instruction_diag_9c", VCPU_STAT(diagnose_9c) },
- { "diag_9c_ignored", VCPU_STAT(diagnose_9c_ignored) },
- { "instruction_diag_258", VCPU_STAT(diagnose_258) },
- { "instruction_diag_308", VCPU_STAT(diagnose_308) },
- { "instruction_diag_500", VCPU_STAT(diagnose_500) },
- { "instruction_diag_other", VCPU_STAT(diagnose_other) },
+ VCPU_STAT("userspace_handled", exit_userspace),
+ VCPU_STAT("exit_null", exit_null),
+ 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("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("halt_no_poll_steal", halt_no_poll_steal),
+ VCPU_STAT("halt_wakeup", halt_wakeup),
+ 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("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 }
};

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b8124b562dea..86d50db85ef4 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -97,9 +97,6 @@ static u64 __read_mostly efer_reserved_bits = ~((u64)EFER_SCE);

static u64 __read_mostly cr4_reserved_bits = CR4_RESERVED_BITS;

-#define VM_STAT(x, ...) offsetof(struct kvm, stat.x), KVM_STAT_VM, ## __VA_ARGS__
-#define VCPU_STAT(x, ...) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__
-
#define KVM_X2APIC_API_VALID_FLAGS (KVM_X2APIC_API_USE_32BIT_IDS | \
KVM_X2APIC_API_DISABLE_BROADCAST_QUIRK)

@@ -194,45 +191,44 @@ u64 __read_mostly supported_xss;
EXPORT_SYMBOL_GPL(supported_xss);

struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "pf_fixed", VCPU_STAT(pf_fixed) },
- { "pf_guest", VCPU_STAT(pf_guest) },
- { "tlb_flush", VCPU_STAT(tlb_flush) },
- { "invlpg", VCPU_STAT(invlpg) },
- { "exits", VCPU_STAT(exits) },
- { "io_exits", VCPU_STAT(io_exits) },
- { "mmio_exits", VCPU_STAT(mmio_exits) },
- { "signal_exits", VCPU_STAT(signal_exits) },
- { "irq_window", VCPU_STAT(irq_window_exits) },
- { "nmi_window", VCPU_STAT(nmi_window_exits) },
- { "halt_exits", VCPU_STAT(halt_exits) },
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
- { "halt_wakeup", VCPU_STAT(halt_wakeup) },
- { "hypercalls", VCPU_STAT(hypercalls) },
- { "request_irq", VCPU_STAT(request_irq_exits) },
- { "irq_exits", VCPU_STAT(irq_exits) },
- { "host_state_reload", VCPU_STAT(host_state_reload) },
- { "fpu_reload", VCPU_STAT(fpu_reload) },
- { "insn_emulation", VCPU_STAT(insn_emulation) },
- { "insn_emulation_fail", VCPU_STAT(insn_emulation_fail) },
- { "irq_injections", VCPU_STAT(irq_injections) },
- { "nmi_injections", VCPU_STAT(nmi_injections) },
- { "req_event", VCPU_STAT(req_event) },
- { "l1d_flush", VCPU_STAT(l1d_flush) },
- { "mmu_shadow_zapped", VM_STAT(mmu_shadow_zapped) },
- { "mmu_pte_write", VM_STAT(mmu_pte_write) },
- { "mmu_pte_updated", VM_STAT(mmu_pte_updated) },
- { "mmu_pde_zapped", VM_STAT(mmu_pde_zapped) },
- { "mmu_flooded", VM_STAT(mmu_flooded) },
- { "mmu_recycled", VM_STAT(mmu_recycled) },
- { "mmu_cache_miss", VM_STAT(mmu_cache_miss) },
- { "mmu_unsync", VM_STAT(mmu_unsync) },
- { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
- { "largepages", VM_STAT(lpages, .mode = 0444) },
- { "nx_largepages_splitted", VM_STAT(nx_lpage_splits, .mode = 0444) },
- { "max_mmu_page_hash_collisions",
- VM_STAT(max_mmu_page_hash_collisions) },
+ 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("halt_successful_poll", halt_successful_poll),
+ VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
+ VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
+ VCPU_STAT("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),
+ VM_STAT("mmu_shadow_zapped", mmu_shadow_zapped),
+ VM_STAT("mmu_pte_write", mmu_pte_write),
+ VM_STAT("mmu_pte_updated", mmu_pte_updated),
+ 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("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 }
};

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 6d58beb65454..2e6ead872957 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1130,6 +1130,11 @@ struct kvm_stats_debugfs_item {
#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__ }
+
extern struct kvm_stats_debugfs_item debugfs_entries[];
extern struct dentry *kvm_debugfs_dir;

--
2.25.2


2020-04-15 22:11:26

by Philippe Mathieu-Daudé

[permalink] [raw]
Subject: Re: [PATCH v2] kvm_host: unify VM_STAT and VCPU_STAT definitions in a single place

On 4/14/20 5:56 PM, Emanuele Giuseppe Esposito wrote:
> The macros VM_STAT and VCPU_STAT are redundantly implemented in multiple
> files, each used by a different architecure to initialize the debugfs
> entries for statistics. Since they all have the same purpose, they can be
> unified in a single common definition in include/linux/kvm_host.h
>
> Signed-off-by: Emanuele Giuseppe Esposito <[email protected]>
> ---
> arch/arm64/kvm/guest.c | 23 ++---
> arch/mips/kvm/mips.c | 61 ++++++------
> arch/powerpc/kvm/book3s.c | 61 ++++++------
> arch/powerpc/kvm/booke.c | 41 ++++----
> arch/s390/kvm/kvm-s390.c | 203 +++++++++++++++++++-------------------
> arch/x86/kvm/x86.c | 80 +++++++--------
> include/linux/kvm_host.h | 5 +
> 7 files changed, 231 insertions(+), 243 deletions(-)
>
> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
> index 23ebe51410f0..8417b200bec9 100644
> --- a/arch/arm64/kvm/guest.c
> +++ b/arch/arm64/kvm/guest.c
> @@ -29,20 +29,17 @@
>
> #include "trace.h"
>
> -#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x), KVM_STAT_VM }
> -#define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
> -
> struct kvm_stats_debugfs_item debugfs_entries[] = {
> - VCPU_STAT(halt_successful_poll),
> - VCPU_STAT(halt_attempted_poll),
> - VCPU_STAT(halt_poll_invalid),
> - VCPU_STAT(halt_wakeup),
> - VCPU_STAT(hvc_exit_stat),
> - VCPU_STAT(wfe_exit_stat),
> - VCPU_STAT(wfi_exit_stat),
> - VCPU_STAT(mmio_exit_user),
> - VCPU_STAT(mmio_exit_kernel),
> - VCPU_STAT(exits),
> + VCPU_STAT("halt_successful_poll", halt_successful_poll),
> + VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
> + VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
> + VCPU_STAT("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),
> { NULL }
> };

Patch easily reviewed with --word-diff.

[...]
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 6d58beb65454..2e6ead872957 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -1130,6 +1130,11 @@ struct kvm_stats_debugfs_item {
> #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, ...) \

Not sure while you use so many whitespaces here... (maybe Paolo can
strip some when applying?).

Otherwise it looks nicer that v1, thanks.

Reviewed-by: Philippe Mathieu-Daudé <[email protected]>

> + { n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ }
> +
> extern struct kvm_stats_debugfs_item debugfs_entries[];
> extern struct dentry *kvm_debugfs_dir;
>
>

Subject: Re: [PATCH v2] kvm_host: unify VM_STAT and VCPU_STAT definitions in a single place



On 4/15/20 8:36 AM, Philippe Mathieu-Daudé wrote:
> On 4/14/20 5:56 PM, Emanuele Giuseppe Esposito wrote:
>> The macros VM_STAT and VCPU_STAT are redundantly implemented in multiple
>> files, each used by a different architecure to initialize the debugfs
>> entries for statistics. Since they all have the same purpose, they can be
>> unified in a single common definition in include/linux/kvm_host.h
>>
>> Signed-off-by: Emanuele Giuseppe Esposito <[email protected]>
>> ---
>> arch/arm64/kvm/guest.c | 23 ++---
>> arch/mips/kvm/mips.c | 61 ++++++------
>> arch/powerpc/kvm/book3s.c | 61 ++++++------
>> arch/powerpc/kvm/booke.c | 41 ++++----
>> arch/s390/kvm/kvm-s390.c | 203 +++++++++++++++++++-------------------
>> arch/x86/kvm/x86.c | 80 +++++++--------
>> include/linux/kvm_host.h | 5 +
>> 7 files changed, 231 insertions(+), 243 deletions(-)
>>
>> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
>> index 23ebe51410f0..8417b200bec9 100644
>> --- a/arch/arm64/kvm/guest.c
>> +++ b/arch/arm64/kvm/guest.c
>> @@ -29,20 +29,17 @@
>>
>> #include "trace.h"
>>
>> -#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x), KVM_STAT_VM }
>> -#define VCPU_STAT(x) { #x, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU }
>> -
>> struct kvm_stats_debugfs_item debugfs_entries[] = {
>> - VCPU_STAT(halt_successful_poll),
>> - VCPU_STAT(halt_attempted_poll),
>> - VCPU_STAT(halt_poll_invalid),
>> - VCPU_STAT(halt_wakeup),
>> - VCPU_STAT(hvc_exit_stat),
>> - VCPU_STAT(wfe_exit_stat),
>> - VCPU_STAT(wfi_exit_stat),
>> - VCPU_STAT(mmio_exit_user),
>> - VCPU_STAT(mmio_exit_kernel),
>> - VCPU_STAT(exits),
>> + VCPU_STAT("halt_successful_poll", halt_successful_poll),
>> + VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
>> + VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
>> + VCPU_STAT("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),
>> { NULL }
>> };
>
> Patch easily reviewed with --word-diff.
>
> [...]
>> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
>> index 6d58beb65454..2e6ead872957 100644
>> --- a/include/linux/kvm_host.h
>> +++ b/include/linux/kvm_host.h
>> @@ -1130,6 +1130,11 @@ struct kvm_stats_debugfs_item {
>> #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, ...) \
>
> Not sure while you use so many whitespaces here... (maybe Paolo can
> strip some when applying?).

I honestly am not sure why it added few more spaces than I wanted, but
the idea was to follow the KVM_DBGFS_GET_MODE macro above and put the
backslash at the end of the line (80th char).

>
> Otherwise it looks nicer that v1, thanks.
>
> Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
>
>> + { n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ## __VA_ARGS__ }
>> +
>> extern struct kvm_stats_debugfs_item debugfs_entries[];
>> extern struct dentry *kvm_debugfs_dir;
>>
>>
>

2020-04-15 23:02:51

by Claudio Imbrenda

[permalink] [raw]
Subject: Re: [PATCH v2] kvm_host: unify VM_STAT and VCPU_STAT definitions in a single place

On Wed, 15 Apr 2020 10:30:06 +0200
Emanuele Giuseppe Esposito <[email protected]> wrote:

> On 4/15/20 8:36 AM, Philippe Mathieu-Daudé wrote:
> > On 4/14/20 5:56 PM, Emanuele Giuseppe Esposito wrote:
> >> The macros VM_STAT and VCPU_STAT are redundantly implemented in
> >> multiple files, each used by a different architecure to initialize
> >> the debugfs entries for statistics. Since they all have the same
> >> purpose, they can be unified in a single common definition in
> >> include/linux/kvm_host.h
> >>
> >> Signed-off-by: Emanuele Giuseppe Esposito <[email protected]>
> >> ---
> >> arch/arm64/kvm/guest.c | 23 ++---
> >> arch/mips/kvm/mips.c | 61 ++++++------
> >> arch/powerpc/kvm/book3s.c | 61 ++++++------
> >> arch/powerpc/kvm/booke.c | 41 ++++----
> >> arch/s390/kvm/kvm-s390.c | 203
> >> +++++++++++++++++++------------------- arch/x86/kvm/x86.c |
> >> 80 +++++++-------- include/linux/kvm_host.h | 5 +
> >> 7 files changed, 231 insertions(+), 243 deletions(-)
> >>
> >> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
> >> index 23ebe51410f0..8417b200bec9 100644
> >> --- a/arch/arm64/kvm/guest.c
> >> +++ b/arch/arm64/kvm/guest.c
> >> @@ -29,20 +29,17 @@
> >>
> >> #include "trace.h"
> >>
> >> -#define VM_STAT(x) { #x, offsetof(struct kvm, stat.x),
> >> KVM_STAT_VM } -#define VCPU_STAT(x) { #x, offsetof(struct
> >> kvm_vcpu, stat.x), KVM_STAT_VCPU } -
> >> struct kvm_stats_debugfs_item debugfs_entries[] = {
> >> - VCPU_STAT(halt_successful_poll),
> >> - VCPU_STAT(halt_attempted_poll),
> >> - VCPU_STAT(halt_poll_invalid),
> >> - VCPU_STAT(halt_wakeup),
> >> - VCPU_STAT(hvc_exit_stat),
> >> - VCPU_STAT(wfe_exit_stat),
> >> - VCPU_STAT(wfi_exit_stat),
> >> - VCPU_STAT(mmio_exit_user),
> >> - VCPU_STAT(mmio_exit_kernel),
> >> - VCPU_STAT(exits),
> >> + VCPU_STAT("halt_successful_poll", halt_successful_poll),
> >> + VCPU_STAT("halt_attempted_poll", halt_attempted_poll),
> >> + VCPU_STAT("halt_poll_invalid", halt_poll_invalid),
> >> + VCPU_STAT("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),
> >> { NULL }
> >> };
> >
> > Patch easily reviewed with --word-diff.
> >
> > [...]
> >> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> >> index 6d58beb65454..2e6ead872957 100644
> >> --- a/include/linux/kvm_host.h
> >> +++ b/include/linux/kvm_host.h
> >> @@ -1130,6 +1130,11 @@ struct kvm_stats_debugfs_item {
> >> #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, ...)
> >> \
> >>
> >
> > Not sure while you use so many whitespaces here... (maybe Paolo can
> > strip some when applying?).
>
> I honestly am not sure why it added few more spaces than I wanted,
> but the idea was to follow the KVM_DBGFS_GET_MODE macro above and put
> the backslash at the end of the line (80th char).

once the whitespace issues are fixed, you can also add

Reviewed-by: Claudio Imbrenda <[email protected]>

> >
> > Otherwise it looks nicer that v1, thanks.
> >
> > Reviewed-by: Philippe Mathieu-Daudé <[email protected]>
> >
> >> + { n, offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU, ##
> >> __VA_ARGS__ } +
> >> extern struct kvm_stats_debugfs_item debugfs_entries[];
> >> extern struct dentry *kvm_debugfs_dir;
> >>
> >>
> >
>

2020-04-16 01:48:12

by Cornelia Huck

[permalink] [raw]
Subject: Re: [PATCH v2] kvm_host: unify VM_STAT and VCPU_STAT definitions in a single place

On Tue, 14 Apr 2020 17:56:25 +0200
Emanuele Giuseppe Esposito <[email protected]> wrote:

> The macros VM_STAT and VCPU_STAT are redundantly implemented in multiple
> files, each used by a different architecure to initialize the debugfs
> entries for statistics. Since they all have the same purpose, they can be
> unified in a single common definition in include/linux/kvm_host.h
>
> Signed-off-by: Emanuele Giuseppe Esposito <[email protected]>
> ---
> arch/arm64/kvm/guest.c | 23 ++---
> arch/mips/kvm/mips.c | 61 ++++++------
> arch/powerpc/kvm/book3s.c | 61 ++++++------
> arch/powerpc/kvm/booke.c | 41 ++++----
> arch/s390/kvm/kvm-s390.c | 203 +++++++++++++++++++-------------------
> arch/x86/kvm/x86.c | 80 +++++++--------
> include/linux/kvm_host.h | 5 +
> 7 files changed, 231 insertions(+), 243 deletions(-)

Adds a bit of churn, but the end result does look nicer. Looks sane,
but did not review in detail.

Acked-by: Cornelia Huck <[email protected]>