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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] [PATCH v3] xen: arm: enable perf counters
As well as the existing common perf counters add a bunch of ARM specifics,
including the various trap types, vuart/vgic/vtimer accesses and different
types of interrupt.
Adjust the common code so that the columns line up again, not sure when/where
this went wrong.
This is mostly the set of stuff I happened to be interested in, it can be made
more (or less) fine grained as the need arises.
Signed-off-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
---
I don't think I posted v2, but such a long time has passed I'm jumping
to v3 to avoid confusion.
v3: Rebased onto current staging
Handled changes to PSCI (function numbers are no longer just small
ints)
Handled VGIC refactoring (v2 vs v3)
Count WFI separate from WFE now we trap both.
v2: s/trap_cp15_32/trap_cp15_64/ when that was what I meant
s/vtimer_phys_ignored/vtimer_phys_masked/ which better describes it
Removed a spurious whitespace change in traps.c.
Move comment on the scope of the change and future changes to the main
body of the commit log. Expanded the comment.
Line up the descriptions of blocks of perfc_defn.
---
xen/arch/arm/gic.c | 3 ++
xen/arch/arm/irq.c | 8 ++++-
xen/arch/arm/time.c | 4 +++
xen/arch/arm/traps.c | 36 ++++++++++++++++++-
xen/arch/arm/vgic-v2.c | 4 +++
xen/arch/arm/vgic-v3.c | 13 +++++++
xen/arch/arm/vgic.c | 9 +++++
xen/arch/arm/vtimer.c | 22 ++++++++++++
xen/arch/arm/vuart.c | 5 +++
xen/common/perfc.c | 4 +--
xen/include/asm-arm/config.h | 2 ++
xen/include/asm-arm/perfc.h | 12 +++++++
xen/include/asm-arm/perfc_defn.h | 74 ++++++++++++++++++++++++++++++++++++++
13 files changed, 192 insertions(+), 4 deletions(-)
create mode 100644 xen/include/asm-arm/perfc.h
create mode 100644 xen/include/asm-arm/perfc_defn.h
diff --git a/xen/arch/arm/gic.c b/xen/arch/arm/gic.c
index e7a1af5..390c8b0 100644
--- a/xen/arch/arm/gic.c
+++ b/xen/arch/arm/gic.c
@@ -536,6 +536,8 @@ static void do_sgi(struct cpu_user_regs *regs, enum gic_sgi
sgi)
/* Lower the priority */
struct irq_desc *desc = irq_to_desc(sgi);
+ perfc_incr(ipis);
+
/* Lower the priority */
gic_hw_ops->eoi_irq(desc);
@@ -604,6 +606,7 @@ static void maintenance_interrupt(int irq, void *dev_id,
struct cpu_user_regs *r
* GICH_HCR_UIE is cleared before reading GICC_IAR. As a consequence
* this handler is not called.
*/
+ perfc_incr(maintenance_irqs);
}
void gic_dump_info(struct vcpu *v)
diff --git a/xen/arch/arm/irq.c b/xen/arch/arm/irq.c
index 25ecf1d..604fc81 100644
--- a/xen/arch/arm/irq.c
+++ b/xen/arch/arm/irq.c
@@ -179,7 +179,12 @@ void do_IRQ(struct cpu_user_regs *regs, unsigned int irq,
int is_fiq)
{
struct irq_desc *desc = irq_to_desc(irq);
- /* TODO: perfc_incr(irqs); */
+ perfc_incr(irqs);
+
+ if (irq < 32) /* SGIs do not come down this path */
+ perfc_incr(ppis);
+ else
+ perfc_incr(spis);
/* TODO: this_cpu(irq_count)++; */
@@ -199,6 +204,7 @@ void do_IRQ(struct cpu_user_regs *regs, unsigned int irq,
int is_fiq)
{
struct domain *d = irq_get_domain(desc);
+ perfc_incr(guest_irqs);
desc->handler->end(desc);
set_bit(_IRQ_INPROGRESS, &desc->status);
diff --git a/xen/arch/arm/time.c b/xen/arch/arm/time.c
index 0add494..455f217 100644
--- a/xen/arch/arm/time.c
+++ b/xen/arch/arm/time.c
@@ -151,6 +151,7 @@ static void timer_interrupt(int irq, void *dev_id, struct
cpu_user_regs *regs)
if ( irq == (timer_irq[TIMER_HYP_PPI]) &&
READ_SYSREG32(CNTHP_CTL_EL2) & CNTx_CTL_PENDING )
{
+ perfc_incr(hyp_timer_irqs);
/* Signal the generic timer code to do its work */
raise_softirq(TIMER_SOFTIRQ);
/* Disable the timer to avoid more interrupts */
@@ -160,6 +161,7 @@ static void timer_interrupt(int irq, void *dev_id, struct
cpu_user_regs *regs)
if ( irq == (timer_irq[TIMER_PHYS_NONSECURE_PPI]) &&
READ_SYSREG32(CNTP_CTL_EL0) & CNTx_CTL_PENDING )
{
+ perfc_incr(phys_timer_irqs);
/* Signal the generic timer code to do its work */
raise_softirq(TIMER_SOFTIRQ);
/* Disable the timer to avoid more interrupts */
@@ -182,6 +184,8 @@ static void vtimer_interrupt(int irq, void *dev_id, struct
cpu_user_regs *regs)
if ( unlikely(is_idle_vcpu(current)) )
return;
+ perfc_incr(virt_timer_irqs);
+
current->arch.virt_timer.ctl = READ_SYSREG32(CNTV_CTL_EL0);
WRITE_SYSREG32(current->arch.virt_timer.ctl | CNTx_CTL_MASK, CNTV_CTL_EL0);
vgic_vcpu_inject_irq(current, current->arch.virt_timer.irq);
diff --git a/xen/arch/arm/traps.c b/xen/arch/arm/traps.c
index 4c93250..68208d6 100644
--- a/xen/arch/arm/traps.c
+++ b/xen/arch/arm/traps.c
@@ -30,6 +30,7 @@
#include <xen/hypercall.h>
#include <xen/softirq.h>
#include <xen/domain_page.h>
+#include <xen/perfc.h>
#include <public/sched.h>
#include <public/xen.h>
#include <asm/debugger.h>
@@ -1240,6 +1241,7 @@ static void do_trap_psci(struct cpu_user_regs *regs)
case PSCI_cpu_off:
{
uint32_t pstate = PSCI_ARG32(regs,1);
+ perfc_incr(psci_cpu_off);
PSCI_RESULT_REG(regs) = do_psci_cpu_off(pstate);
}
break;
@@ -1247,33 +1249,41 @@ static void do_trap_psci(struct cpu_user_regs *regs)
{
uint32_t vcpuid = PSCI_ARG32(regs,1);
register_t epoint = PSCI_ARG(regs,2);
+ perfc_incr(psci_cpu_on);
PSCI_RESULT_REG(regs) = do_psci_cpu_on(vcpuid, epoint);
}
break;
case PSCI_0_2_FN_PSCI_VERSION:
+ perfc_incr(psci_version);
PSCI_RESULT_REG(regs) = do_psci_0_2_version();
break;
case PSCI_0_2_FN_CPU_OFF:
+ perfc_incr(psci_cpu_off);
PSCI_RESULT_REG(regs) = do_psci_0_2_cpu_off();
break;
case PSCI_0_2_FN_MIGRATE_INFO_TYPE:
+ perfc_incr(psci_migrate_info_type);
PSCI_RESULT_REG(regs) = do_psci_0_2_migrate_info_type();
break;
case PSCI_0_2_FN_MIGRATE_INFO_UP_CPU:
case PSCI_0_2_FN64_MIGRATE_INFO_UP_CPU:
+ perfc_incr(psci_migrate_info_up_cpu);
if ( psci_mode_check(current->domain, fid) )
PSCI_RESULT_REG(regs) = do_psci_0_2_migrate_info_up_cpu();
break;
case PSCI_0_2_FN_SYSTEM_OFF:
+ perfc_incr(psci_system_off);
do_psci_0_2_system_off();
PSCI_RESULT_REG(regs) = PSCI_INTERNAL_FAILURE;
break;
case PSCI_0_2_FN_SYSTEM_RESET:
+ perfc_incr(psci_system_reset);
do_psci_0_2_system_reset();
PSCI_RESULT_REG(regs) = PSCI_INTERNAL_FAILURE;
break;
case PSCI_0_2_FN_CPU_ON:
case PSCI_0_2_FN64_CPU_ON:
+ perfc_incr(psci_cpu_on);
if ( psci_mode_check(current->domain, fid) )
{
register_t vcpuid = PSCI_ARG(regs,1);
@@ -1285,6 +1295,7 @@ static void do_trap_psci(struct cpu_user_regs *regs)
break;
case PSCI_0_2_FN_CPU_SUSPEND:
case PSCI_0_2_FN64_CPU_SUSPEND:
+ perfc_incr(psci_cpu_suspend);
if ( psci_mode_check(current->domain, fid) )
{
uint32_t pstate = PSCI_ARG32(regs,1);
@@ -1296,6 +1307,7 @@ static void do_trap_psci(struct cpu_user_regs *regs)
break;
case PSCI_0_2_FN_AFFINITY_INFO:
case PSCI_0_2_FN64_AFFINITY_INFO:
+ perfc_incr(psci_cpu_affinity_info);
if ( psci_mode_check(current->domain, fid) )
{
register_t taff = PSCI_ARG(regs,1);
@@ -1306,6 +1318,7 @@ static void do_trap_psci(struct cpu_user_regs *regs)
break;
case PSCI_0_2_FN_MIGRATE:
case PSCI_0_2_FN64_MIGRATE:
+ perfc_incr(psci_cpu_migrate);
if ( psci_mode_check(current->domain, fid) )
{
uint32_t tcpu = PSCI_ARG32(regs,1);
@@ -1344,15 +1357,19 @@ static void do_trap_hypercall(struct cpu_user_regs
*regs, register_t *nr,
register_t orig_pc = regs->pc;
#endif
+ BUILD_BUG_ON(NR_hypercalls < ARRAY_SIZE(arm_hypercall_table) );
+
if ( iss != XEN_HYPERCALL_TAG )
domain_crash_synchronous();
if ( *nr >= ARRAY_SIZE(arm_hypercall_table) )
{
+ perfc_incr(invalid_hypercalls);
HYPERCALL_RESULT_REG(regs) = -ENOSYS;
return;
}
+ perfc_incra(hypercalls, *nr);
call = arm_hypercall_table[*nr].fn;
if ( call == NULL )
{
@@ -1492,8 +1509,10 @@ static int check_conditional_instr(struct cpu_user_regs
*regs, union hsr hsr)
cpsr_cond = cpsr >> 28;
if ( !((cc_map[cond] >> cpsr_cond) & 1) )
+ {
+ perfc_incr(trap_uncond);
return 0;
-
+ }
return 1;
}
@@ -2034,9 +2053,11 @@ asmlinkage void do_trap_hypervisor(struct cpu_user_regs
*regs)
}
if ( hsr.wfi_wfe.ti ) {
/* Yield the VCPU for WFE */
+ perfc_incr(trap_wfe);
vcpu_yield();
} else {
/* Block the VCPU for WFI */
+ perfc_incr(trap_wfi);
vcpu_block_unless_event_pending(current);
}
advance_pc(regs, hsr);
@@ -2044,32 +2065,39 @@ asmlinkage void do_trap_hypervisor(struct cpu_user_regs
*regs)
case HSR_EC_CP15_32:
if ( !is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_cp15_32);
do_cp15_32(regs, hsr);
break;
case HSR_EC_CP15_64:
if ( !is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_cp15_64);
do_cp15_64(regs, hsr);
break;
case HSR_EC_CP14_32:
if ( !is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_cp14_32);
do_cp14_32(regs, hsr);
break;
case HSR_EC_CP14_DBG:
if ( !is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_cp14_dbg);
do_cp14_dbg(regs, hsr);
break;
case HSR_EC_CP:
if ( !is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_cp);
do_cp(regs, hsr);
break;
case HSR_EC_SMC32:
+ perfc_incr(trap_smc32);
inject_undef32_exception(regs);
break;
case HSR_EC_HVC32:
+ perfc_incr(trap_hvc32);
#ifndef NDEBUG
if ( (hsr.iss & 0xff00) == 0xff00 )
return do_debug_trap(regs, hsr.iss & 0x00ff);
@@ -2080,6 +2108,7 @@ asmlinkage void do_trap_hypervisor(struct cpu_user_regs
*regs)
break;
#ifdef CONFIG_ARM_64
case HSR_EC_HVC64:
+ perfc_incr(trap_hvc64);
#ifndef NDEBUG
if ( (hsr.iss & 0xff00) == 0xff00 )
return do_debug_trap(regs, hsr.iss & 0x00ff);
@@ -2089,19 +2118,23 @@ asmlinkage void do_trap_hypervisor(struct cpu_user_regs
*regs)
do_trap_hypercall(regs, ®s->x16, hsr.iss);
break;
case HSR_EC_SMC64:
+ perfc_incr(trap_smc64);
inject_undef64_exception(regs, hsr.len);
break;
case HSR_EC_SYSREG:
if ( is_32bit_domain(current->domain) )
goto bad_trap;
+ perfc_incr(trap_sysreg);
do_sysreg(regs, hsr);
break;
#endif
case HSR_EC_INSTR_ABORT_LOWER_EL:
+ perfc_incr(trap_iabt);
do_trap_instr_abort_guest(regs, hsr);
break;
case HSR_EC_DATA_ABORT_LOWER_EL:
+ perfc_incr(trap_dabt);
do_trap_data_abort_guest(regs, hsr);
break;
@@ -2113,6 +2146,7 @@ asmlinkage void do_trap_hypervisor(struct cpu_user_regs
*regs)
default:
bad_trap:
+ perfc_incr(trap_bad);
printk("Hypervisor Trap. HSR=0x%x EC=0x%x IL=%x
Syndrome=0x%"PRIx32"\n",
hsr.bits, hsr.ec, hsr.len, hsr.iss);
do_unexpected_trap("Hypervisor", regs);
diff --git a/xen/arch/arm/vgic-v2.c b/xen/arch/arm/vgic-v2.c
index 1369f78..4dc2267 100644
--- a/xen/arch/arm/vgic-v2.c
+++ b/xen/arch/arm/vgic-v2.c
@@ -41,6 +41,8 @@ static int vgic_v2_distr_mmio_read(struct vcpu *v,
mmio_info_t *info)
int gicd_reg = (int)(info->gpa - v->domain->arch.vgic.dbase);
unsigned long flags;
+ perfc_incr(vgicd_reads);
+
switch ( gicd_reg )
{
case GICD_CTLR:
@@ -271,6 +273,8 @@ static int vgic_v2_distr_mmio_write(struct vcpu *v,
mmio_info_t *info)
uint32_t tr;
unsigned long flags;
+ perfc_incr(vgicd_writes);
+
switch ( gicd_reg )
{
case GICD_CTLR:
diff --git a/xen/arch/arm/vgic-v3.c b/xen/arch/arm/vgic-v3.c
index ff99e50..c738ca9 100644
--- a/xen/arch/arm/vgic-v3.c
+++ b/xen/arch/arm/vgic-v3.c
@@ -605,6 +605,8 @@ static int vgic_v3_rdistr_mmio_read(struct vcpu *v,
mmio_info_t *info)
{
uint32_t offset;
+ perfc_incr(vgicr_reads);
+
if ( v->domain->arch.vgic.rdist_stride != 0 )
offset = info->gpa & (v->domain->arch.vgic.rdist_stride - 1);
else
@@ -627,6 +629,8 @@ static int vgic_v3_rdistr_mmio_write(struct vcpu *v,
mmio_info_t *info)
{
uint32_t offset;
+ perfc_incr(vgicr_writes);
+
if ( v->domain->arch.vgic.rdist_stride != 0 )
offset = info->gpa & (v->domain->arch.vgic.rdist_stride - 1);
else
@@ -656,6 +660,8 @@ static int vgic_v3_distr_mmio_read(struct vcpu *v,
mmio_info_t *info)
unsigned int vcpu_id;
int gicd_reg = (int)(info->gpa - v->domain->arch.vgic.dbase);
+ perfc_incr(vgicd_reads);
+
switch ( gicd_reg )
{
case GICD_CTLR:
@@ -801,6 +807,8 @@ static int vgic_v3_distr_mmio_write(struct vcpu *v,
mmio_info_t *info)
struct vcpu *old_vcpu, *new_vcpu;
int gicd_reg = (int)(info->gpa - v->domain->arch.vgic.dbase);
+ perfc_incr(vgicd_writes);
+
switch ( gicd_reg )
{
case GICD_CTLR:
@@ -980,6 +988,11 @@ static int vgic_v3_emulate_sysreg(struct cpu_user_regs
*regs, union hsr hsr)
ASSERT (hsr.ec == HSR_EC_SYSREG);
+ if ( sysreg.read )
+ perfc_incr(vgic_sysreg_reads);
+ else
+ perfc_incr(vgic_sysreg_writes);
+
switch ( hsr.bits & HSR_SYSREG_REGS_MASK )
{
case HSR_SYSREG_ICC_SGI1R_EL1:
diff --git a/xen/arch/arm/vgic.c b/xen/arch/arm/vgic.c
index b8bd38b..8938a69 100644
--- a/xen/arch/arm/vgic.c
+++ b/xen/arch/arm/vgic.c
@@ -24,6 +24,7 @@
#include <xen/softirq.h>
#include <xen/irq.h>
#include <xen/sched.h>
+#include <xen/perfc.h>
#include <asm/current.h>
@@ -185,6 +186,8 @@ void vgic_migrate_irq(struct vcpu *old, struct vcpu *new,
unsigned int irq)
if ( test_bit(GIC_IRQ_GUEST_MIGRATING, &p->status) )
return;
+ perfc_incr(vgic_irq_migrates);
+
spin_lock_irqsave(&old->arch.vgic.lock, flags);
if ( list_empty(&p->inflight) )
@@ -301,12 +304,14 @@ int vgic_to_sgi(struct vcpu *v, register_t sgir, enum
gic_sgi_mode irqmode, int
switch ( irqmode )
{
case SGI_TARGET_LIST:
+ perfc_incr(vgic_sgi_list);
break;
case SGI_TARGET_OTHERS:
/*
* We expect vcpu_mask to be 0 for SGI_TARGET_OTHERS and
* SGI_TARGET_SELF mode. So Force vcpu_mask to 0
*/
+ perfc_incr(vgic_sgi_others);
vcpu_mask = 0;
for ( i = 0; i < d->max_vcpus; i++ )
{
@@ -320,6 +325,7 @@ int vgic_to_sgi(struct vcpu *v, register_t sgir, enum
gic_sgi_mode irqmode, int
* We expect vcpu_mask to be 0 for SGI_TARGET_OTHERS and
* SGI_TARGET_SELF mode. So Force vcpu_mask to 0
*/
+ perfc_incr(vgic_sgi_self);
vcpu_mask = 0;
set_bit(current->vcpu_id, &vcpu_mask);
break;
@@ -418,7 +424,10 @@ out:
running = v->is_running;
vcpu_unblock(v);
if ( running && v != current )
+ {
+ perfc_incr(vgic_cross_cpu_intr_inject);
smp_send_event_check_mask(cpumask_of(v->processor));
+ }
}
void vgic_vcpu_inject_spi(struct domain *d, unsigned int irq)
diff --git a/xen/arch/arm/vtimer.c b/xen/arch/arm/vtimer.c
index 2e95ceb..848e2c6 100644
--- a/xen/arch/arm/vtimer.c
+++ b/xen/arch/arm/vtimer.c
@@ -21,6 +21,7 @@
#include <xen/lib.h>
#include <xen/timer.h>
#include <xen/sched.h>
+#include <xen/perfc.h>
#include <asm/irq.h>
#include <asm/time.h>
#include <asm/gic.h>
@@ -35,7 +36,12 @@ static void phys_timer_expired(void *data)
struct vtimer *t = data;
t->ctl |= CNTx_CTL_PENDING;
if ( !(t->ctl & CNTx_CTL_MASK) )
+ {
+ perfc_incr(vtimer_phys_inject);
vgic_vcpu_inject_irq(t->v, t->irq);
+ }
+ else
+ perfc_incr(vtimer_phys_masked);
}
static void virt_timer_expired(void *data)
@@ -43,6 +49,7 @@ static void virt_timer_expired(void *data)
struct vtimer *t = data;
t->ctl |= CNTx_CTL_MASK;
vgic_vcpu_inject_irq(t->v, t->irq);
+ perfc_incr(vtimer_virt_inject);
}
int domain_vtimer_init(struct domain *d)
@@ -196,6 +203,11 @@ static int vtimer_emulate_cp32(struct cpu_user_regs *regs,
union hsr hsr)
struct hsr_cp32 cp32 = hsr.cp32;
uint32_t *r = (uint32_t *)select_user_reg(regs, cp32.reg);
+ if ( cp32.read )
+ perfc_incr(vtimer_cp32_reads);
+ else
+ perfc_incr(vtimer_cp32_writes);
+
switch ( hsr.bits & HSR_CP32_REGS_MASK )
{
case HSR_CPREG32(CNTP_CTL):
@@ -218,6 +230,11 @@ static int vtimer_emulate_cp64(struct cpu_user_regs *regs,
union hsr hsr)
uint32_t *r2 = (uint32_t *)select_user_reg(regs, cp64.reg2);
uint64_t x;
+ if ( cp64.read )
+ perfc_incr(vtimer_cp64_reads);
+ else
+ perfc_incr(vtimer_cp64_writes);
+
switch ( hsr.bits & HSR_CP64_REGS_MASK )
{
case HSR_CPREG64(CNTPCT):
@@ -243,6 +260,11 @@ static int vtimer_emulate_sysreg(struct cpu_user_regs
*regs, union hsr hsr)
register_t *x = select_user_reg(regs, sysreg.reg);
uint32_t r = (uint32_t)*x;
+ if ( sysreg.read )
+ perfc_incr(vtimer_sysreg_reads);
+ else
+ perfc_incr(vtimer_sysreg_writes);
+
switch ( hsr.bits & HSR_SYSREG_REGS_MASK )
{
case HSR_SYSREG_CNTP_CTL_EL0:
diff --git a/xen/arch/arm/vuart.c b/xen/arch/arm/vuart.c
index e327c15..d9f4249 100644
--- a/xen/arch/arm/vuart.c
+++ b/xen/arch/arm/vuart.c
@@ -39,6 +39,7 @@
#include <xen/ctype.h>
#include <xen/serial.h>
#include <asm/mmio.h>
+#include <xen/perfc.h>
#include "vuart.h"
@@ -112,6 +113,8 @@ static int vuart_mmio_read(struct vcpu *v, mmio_info_t
*info)
register_t *r = select_user_reg(regs, dabt.reg);
paddr_t offset = info->gpa - d->arch.vuart.info->base_addr;
+ perfc_incr(vuart_reads);
+
/* By default zeroed the register */
*r = 0;
@@ -130,6 +133,8 @@ static int vuart_mmio_write(struct vcpu *v, mmio_info_t
*info)
register_t *r = select_user_reg(regs, dabt.reg);
paddr_t offset = info->gpa - d->arch.vuart.info->base_addr;
+ perfc_incr(vuart_writes);
+
if ( offset == d->arch.vuart.info->data_off )
/* ignore any status bits */
vuart_print_char(v, *r & 0xFF);
diff --git a/xen/common/perfc.c b/xen/common/perfc.c
index 96a4245..9f078e1 100644
--- a/xen/common/perfc.c
+++ b/xen/common/perfc.c
@@ -57,7 +57,7 @@ void perfc_printall(unsigned char key)
for_each_online_cpu ( cpu )
{
if ( k > 0 && (k % 4) == 0 )
- printk("\n%46s", "");
+ printk("\n%53s", "");
printk(" CPU%02u[%10"PRIperfc"u]", cpu,
per_cpu(perfcounters, cpu)[j]);
++k;
}
@@ -103,7 +103,7 @@ void perfc_printall(unsigned char key)
if ( perfc_info[i].type == TYPE_S_ARRAY )
sum = (perfc_t) sum;
if ( k > 0 && (k % 4) == 0 )
- printk("\n%46s", "");
+ printk("\n%53s", "");
printk(" CPU%02u[%10Lu]", cpu, sum);
++k;
}
diff --git a/xen/include/asm-arm/config.h b/xen/include/asm-arm/config.h
index 9e165db..1b5a842 100644
--- a/xen/include/asm-arm/config.h
+++ b/xen/include/asm-arm/config.h
@@ -187,6 +187,8 @@
#define PAGE_MASK (~(PAGE_SIZE-1))
#define PAGE_FLAG_MASK (~0)
+#define NR_hypercalls 64
+
#define STACK_ORDER 3
#define STACK_SIZE (PAGE_SIZE << STACK_ORDER)
diff --git a/xen/include/asm-arm/perfc.h b/xen/include/asm-arm/perfc.h
new file mode 100644
index 0000000..a1a591e
--- /dev/null
+++ b/xen/include/asm-arm/perfc.h
@@ -0,0 +1,12 @@
+#ifndef __ASM_PERFC_H__
+#define __ASM_PERFC_H__
+
+static inline void arch_perfc_reset(void)
+{
+}
+
+static inline void arch_perfc_gather(void)
+{
+}
+
+#endif
diff --git a/xen/include/asm-arm/perfc_defn.h b/xen/include/asm-arm/perfc_defn.h
new file mode 100644
index 0000000..df86879
--- /dev/null
+++ b/xen/include/asm-arm/perfc_defn.h
@@ -0,0 +1,74 @@
+/* This file is legitimately included multiple times. */
+/*#ifndef __XEN_PERFC_DEFN_H__*/
+/*#define __XEN_PERFC_DEFN_H__*/
+
+PERFCOUNTER(invalid_hypercalls, "invalid hypercalls")
+
+PERFCOUNTER(trap_wfi, "trap: wfi")
+PERFCOUNTER(trap_wfe, "trap: wfe")
+PERFCOUNTER(trap_cp15_32, "trap: cp15 32-bit access")
+PERFCOUNTER(trap_cp15_64, "trap: cp15 64-bit access")
+PERFCOUNTER(trap_cp14_32, "trap: cp14 32-bit access")
+PERFCOUNTER(trap_cp14_dbg, "trap: cp14 dbg access")
+PERFCOUNTER(trap_cp, "trap: cp access")
+PERFCOUNTER(trap_smc32, "trap: 32-bit smc")
+PERFCOUNTER(trap_hvc32, "trap: 32-bit hvc")
+#ifdef CONFIG_ARM_64
+PERFCOUNTER(trap_smc64, "trap: 64-bit smc")
+PERFCOUNTER(trap_hvc64, "trap: 64-bit hvc")
+PERFCOUNTER(trap_sysreg, "trap: sysreg access")
+#endif
+PERFCOUNTER(trap_iabt, "trap: guest instr abort")
+PERFCOUNTER(trap_dabt, "trap: guest data abort")
+PERFCOUNTER(trap_uncond, "trap: condition failed")
+PERFCOUNTER(trap_bad, "trap: unknown/bad")
+
+PERFCOUNTER(psci_cpu_on, "psci: cpu_on")
+PERFCOUNTER(psci_cpu_off, "psci: cpu_off")
+PERFCOUNTER(psci_version, "psci: version")
+PERFCOUNTER(psci_migrate_info_type, "psci: migrate_info_type")
+PERFCOUNTER(psci_migrate_info_up_cpu, "psci: migrate_info_up_cpu")
+PERFCOUNTER(psci_system_off, "psci: system_off")
+PERFCOUNTER(psci_system_reset, "psci: system_reset")
+PERFCOUNTER(psci_cpu_suspend, "psci: cpu_suspend")
+PERFCOUNTER(psci_cpu_affinity_info, "psci: cpu_affinity_info")
+PERFCOUNTER(psci_cpu_migrate, "psci: cpu_migrate")
+
+PERFCOUNTER(vgicd_reads, "vgicd: read")
+PERFCOUNTER(vgicd_writes, "vgicd: write")
+PERFCOUNTER(vgicr_reads, "vgicr: read")
+PERFCOUNTER(vgicr_writes, "vgicr: write")
+PERFCOUNTER(vgic_sysreg_reads, "vgic: sysreg read")
+PERFCOUNTER(vgic_sysreg_writes, "vgic: sysreg write")
+PERFCOUNTER(vgic_sgi_list , "vgic: SGI send to list")
+PERFCOUNTER(vgic_sgi_others, "vgic: SGI send to others")
+PERFCOUNTER(vgic_sgi_self, "vgic: SGI send to self")
+PERFCOUNTER(vgic_cross_cpu_intr_inject, "vgic: cross-CPU irq inject")
+PERFCOUNTER(vgic_irq_migrates, "vgic: irq migration")
+
+PERFCOUNTER(vuart_reads, "vuart: read")
+PERFCOUNTER(vuart_writes, "vuart: write")
+
+PERFCOUNTER(vtimer_cp32_reads, "vtimer: cp32 read")
+PERFCOUNTER(vtimer_cp32_writes, "vtimer: cp32 write")
+
+PERFCOUNTER(vtimer_cp64_reads, "vtimer: cp64 read")
+PERFCOUNTER(vtimer_cp64_writes, "vtimer: cp64 write")
+
+PERFCOUNTER(vtimer_sysreg_reads, "vtimer: sysreg read")
+PERFCOUNTER(vtimer_sysreg_writes, "vtimer: sysreg write")
+
+PERFCOUNTER(vtimer_phys_inject, "vtimer: phys expired, injected")
+PERFCOUNTER(vtimer_phys_masked, "vtimer: phys expired, masked")
+PERFCOUNTER(vtimer_virt_inject, "vtimer: virt expired, injected")
+
+PERFCOUNTER(ppis, "#PPIs")
+PERFCOUNTER(spis, "#SPIs")
+PERFCOUNTER(guest_irqs, "#GUEST-IRQS")
+
+PERFCOUNTER(hyp_timer_irqs, "Hypervisor timer interrupts")
+PERFCOUNTER(phys_timer_irqs, "Physical timer interrupts")
+PERFCOUNTER(virt_timer_irqs, "Virtual timer interrupts")
+PERFCOUNTER(maintenance_irqs, "Maintenance interrupts")
+
+/*#endif*/ /* __XEN_PERFC_DEFN_H__ */
--
1.7.10.4
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