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 | 3 --
arch/powerpc/kvm/booke.c | 3 --
arch/s390/kvm/kvm-s390.c | 3 --
arch/x86/kvm/x86.c | 3 --
include/linux/kvm_host.h | 3 ++
7 files changed, 43 insertions(+), 56 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 23ebe51410f0..3e3aee8b37c0 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),
+ { "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) },
+ { "hvc_exit_stat", VCPU_STAT(hvc_exit_stat) },
+ { "wfe_exit_stat", VCPU_STAT(wfe_exit_stat) },
+ { "wfi_exit_stat", VCPU_STAT(wfi_exit_stat) },
+ { "mmio_exit_user", VCPU_STAT(mmio_exit_user) },
+ { "mmio_exit_kernel", VCPU_STAT(mmio_exit_kernel) },
+ { "exits", VCPU_STAT(exits) },
{ NULL }
};
diff --git a/arch/mips/kvm/mips.c b/arch/mips/kvm/mips.c
index 8f05dd0a0f4e..f14b93d02f02 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 },
+ { "wait", VCPU_STAT(wait_exits) },
+ { "cache", VCPU_STAT(cache_exits) },
+ { "signal", VCPU_STAT(signal_exits) },
+ { "interrupt", VCPU_STAT(int_exits) },
+ { "cop_unusable", VCPU_STAT(cop_unusable_exits) },
+ { "tlbmod", VCPU_STAT(tlbmod_exits) },
+ { "tlbmiss_ld", VCPU_STAT(tlbmiss_ld_exits) },
+ { "tlbmiss_st", VCPU_STAT(tlbmiss_st_exits) },
+ { "addrerr_st", VCPU_STAT(addrerr_st_exits) },
+ { "addrerr_ld", VCPU_STAT(addrerr_ld_exits) },
+ { "syscall", VCPU_STAT(syscall_exits) },
+ { "resvd_inst", VCPU_STAT(resvd_inst_exits) },
+ { "break_inst", VCPU_STAT(break_inst_exits) },
+ { "trap_inst", VCPU_STAT(trap_inst_exits) },
+ { "msa_fpe", VCPU_STAT(msa_fpe_exits) },
+ { "fpe", VCPU_STAT(fpe_exits) },
+ { "msa_disabled", VCPU_STAT(msa_disabled_exits) },
+ { "flush_dcache", VCPU_STAT(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 },
+ { "vz_gpsi", VCPU_STAT(vz_gpsi_exits) },
+ { "vz_gsfc", VCPU_STAT(vz_gsfc_exits) },
+ { "vz_hc", VCPU_STAT(vz_hc_exits) },
+ { "vz_grr", VCPU_STAT(vz_grr_exits) },
+ { "vz_gva", VCPU_STAT(vz_gva_exits) },
+ { "vz_ghfc", VCPU_STAT(vz_ghfc_exits) },
+ { "vz_gpa", VCPU_STAT(vz_gpa_exits) },
+ { "vz_resvd", VCPU_STAT(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 },
+ { "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) },
{NULL}
};
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c
index 5690a1f9b976..55cb728ba06e 100644
--- a/arch/powerpc/kvm/book3s.c
+++ b/arch/powerpc/kvm/book3s.c
@@ -36,9 +36,6 @@
#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[] = {
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c
index 6c18ea88fd25..fb8fa7060804 100644
--- a/arch/powerpc/kvm/booke.c
+++ b/arch/powerpc/kvm/booke.c
@@ -35,9 +35,6 @@
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) },
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 19a81024fe16..1a7bf8759750 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -57,9 +57,6 @@
#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) },
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b8124b562dea..fb035d304004 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)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 6d58beb65454..e02d38c7fff1 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -1130,6 +1130,9 @@ struct kvm_stats_debugfs_item {
#define KVM_DBGFS_GET_MODE(dbgfs_item) \
((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644)
+#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__
+
extern struct kvm_stats_debugfs_item debugfs_entries[];
extern struct dentry *kvm_debugfs_dir;
--
2.17.1
On 13/04/20 23:34, Philippe Mathieu-Daudé wrote:
>> +#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__
> I find this macro expanding into multiple fields odd... Maybe a matter
> of taste. Sugggestion, have the macro define the full structure, as in
> the arm64 arch:
>
> #define VM_STAT(n, x, ...) { n, offsetof(struct kvm, stat.x),
> KVM_STAT_VM, ## __VA_ARGS__ }
>
> Ditto for VCPU_STAT().
>
Yes, that's a good idea. Emanuele, can you switch it to this format?
Thanks,
Paolo
On 4/14/20 10:18 AM, Paolo Bonzini wrote:
> On 13/04/20 23:34, Philippe Mathieu-Daudé wrote:
>>> +#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__
>> I find this macro expanding into multiple fields odd... Maybe a matter
>> of taste. Sugggestion, have the macro define the full structure, as in
>> the arm64 arch:
>>
>> #define VM_STAT(n, x, ...) { n, offsetof(struct kvm, stat.x),
>> KVM_STAT_VM, ## __VA_ARGS__ }
>>
>> Ditto for VCPU_STAT().
>>
Hi Philippe and Paolo,
>
> Yes, that's a good idea. Emanuele, can you switch it to this format?
Sure, I just submitted the v2 version.
Thanks,
Emanuele
Hi Emanuele,
On 4/13/20 4:03 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 | 3 --
> arch/powerpc/kvm/booke.c | 3 --
> arch/s390/kvm/kvm-s390.c | 3 --
> arch/x86/kvm/x86.c | 3 --
> include/linux/kvm_host.h | 3 ++
> 7 files changed, 43 insertions(+), 56 deletions(-)
>
> diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
> index 23ebe51410f0..3e3aee8b37c0 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),
> + { "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) },
> + { "hvc_exit_stat", VCPU_STAT(hvc_exit_stat) },
> + { "wfe_exit_stat", VCPU_STAT(wfe_exit_stat) },
> + { "wfi_exit_stat", VCPU_STAT(wfi_exit_stat) },
> + { "mmio_exit_user", VCPU_STAT(mmio_exit_user) },
> + { "mmio_exit_kernel", VCPU_STAT(mmio_exit_kernel) },
> + { "exits", VCPU_STAT(exits) },
> { NULL }
> };
>
[...]
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 6d58beb65454..e02d38c7fff1 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -1130,6 +1130,9 @@ struct kvm_stats_debugfs_item {
> #define KVM_DBGFS_GET_MODE(dbgfs_item) \
> ((dbgfs_item)->mode ? (dbgfs_item)->mode : 0644)
>
> +#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__
I find this macro expanding into multiple fields odd... Maybe a matter
of taste. Sugggestion, have the macro define the full structure, as in
the arm64 arch:
#define VM_STAT(n, x, ...) { n, offsetof(struct kvm, stat.x),
KVM_STAT_VM, ## __VA_ARGS__ }
Ditto for VCPU_STAT().
> +
> extern struct kvm_stats_debugfs_item debugfs_entries[];
> extern struct dentry *kvm_debugfs_dir;
>
>