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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] [xen-unstable] xen: Make all performance counter per-cpu, avoiding the need to update
# HG changeset patch
# User kfraser@xxxxxxxxxxxxxxxxxxxxx
# Date 1175009737 -3600
# Node ID 96f167771979734080bb0f45086f1d4f699fa50d
# Parent 3375391fb0c901f4d3edb73c02a1169b6bd3d7b4
xen: Make all performance counter per-cpu, avoiding the need to update
them with atomic (locked) ops.
Conversion here isn't complete in the sense that many places still use
the old per-CPU accessors (which are now redundant). Since the patch
is already rather big, I'd prefer replacing those in a subsequent
patch.
While doing this, I also converted x86's multicall macros to no longer
require inclusion of asm-offsets.h in the respective C file (on IA64
the use of asm-offsets.h in C sources seems more wide spread, hence
there I rather used IA64_ prefixes for the otherwise conflicting
performance counter indices).
On x86, a few counter increments get moved a little, to avoid
duplicate counting of preempted hypercalls.
Also, a few counters are being added.
IA64 changes only compile-tested, hence somebody doing active IA64
work may want to have a close look at those changes.
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>
---
xen/arch/ia64/asm-offsets.c | 9 -
xen/arch/ia64/xen/hyperprivop.S | 13 -
xen/arch/ia64/xen/privop_stat.c | 86 +++++-----
xen/arch/ia64/xen/vhpt.c | 8
xen/arch/x86/mm.c | 11 -
xen/arch/x86/x86_32/asm-offsets.c | 14 -
xen/arch/x86/x86_32/entry.S | 4
xen/arch/x86/x86_64/asm-offsets.c | 26 ---
xen/arch/x86/x86_64/compat/entry.S | 2
xen/arch/x86/x86_64/entry.S | 4
xen/common/multicall.c | 5
xen/common/perfc.c | 223 +++++++++++++-------------
xen/include/asm-ia64/linux-xen/asm/asmmacro.h | 4
xen/include/asm-ia64/perfc_defn.h | 4
xen/include/asm-ia64/privop_stat.h | 25 +-
xen/include/asm-x86/multicall.h | 104 ++++++------
xen/include/asm-x86/perfc_defn.h | 8
xen/include/asm-x86/x86_32/asm_defns.h | 12 +
xen/include/asm-x86/x86_64/asm_defns.h | 19 +-
xen/include/xen/perfc.h | 120 ++++++-------
xen/include/xen/perfc_defn.h | 3
21 files changed, 357 insertions(+), 347 deletions(-)
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/ia64/asm-offsets.c
--- a/xen/arch/ia64/asm-offsets.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/ia64/asm-offsets.c Tue Mar 27 16:35:37 2007 +0100
@@ -223,10 +223,11 @@ void foo(void)
#ifdef PERF_COUNTERS
BLANK();
- DEFINE(RECOVER_TO_PAGE_FAULT_PERFC_OFS, offsetof (struct perfcounter,
recover_to_page_fault));
- DEFINE(RECOVER_TO_BREAK_FAULT_PERFC_OFS, offsetof (struct perfcounter,
recover_to_break_fault));
- DEFINE(FAST_HYPERPRIVOP_PERFC_OFS, offsetof (struct perfcounter,
fast_hyperprivop));
- DEFINE(FAST_REFLECT_PERFC_OFS, offsetof (struct perfcounter,
fast_reflect));
+ DEFINE(IA64_PERFC_recover_to_page_fault, PERFC_recover_to_page_fault);
+ DEFINE(IA64_PERFC_recover_to_break_fault, PERFC_recover_to_break_fault);
+ DEFINE(IA64_PERFC_fast_vhpt_translate, PERFC_fast_vhpt_translate);
+ DEFINE(IA64_PERFC_fast_hyperprivop, PERFC_fast_hyperprivop);
+ DEFINE(IA64_PERFC_fast_reflect, PERFC_fast_reflect);
#endif
BLANK();
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/ia64/xen/hyperprivop.S
--- a/xen/arch/ia64/xen/hyperprivop.S Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/ia64/xen/hyperprivop.S Tue Mar 27 16:35:37 2007 +0100
@@ -26,8 +26,7 @@
# define FAST_HYPERPRIVOPS
# ifdef PERF_COUNTERS
# define FAST_HYPERPRIVOP_CNT
-# define FAST_HYPERPRIVOP_PERFC(N) \
- (perfcounters + FAST_HYPERPRIVOP_PERFC_OFS + (4 * N))
+# define FAST_HYPERPRIVOP_PERFC(N) PERFC(fast_hyperprivop + N)
# define FAST_REFLECT_CNT
# endif
@@ -364,7 +363,7 @@ GLOBAL_ENTRY(fast_tick_reflect)
mov rp=r29;;
mov cr.itm=r26;; // ensure next tick
#ifdef FAST_REFLECT_CNT
- movl r20=perfcounters+FAST_REFLECT_PERFC_OFS+((0x3000>>8)*4);;
+ movl r20=PERFC(fast_reflect + (0x3000>>8));;
ld4 r21=[r20];;
adds r21=1,r21;;
st4 [r20]=r21;;
@@ -597,7 +596,7 @@ END(fast_break_reflect)
// r31 == pr
ENTRY(fast_reflect)
#ifdef FAST_REFLECT_CNT
- movl r22=perfcounters+FAST_REFLECT_PERFC_OFS;
+ movl r22=PERFC(fast_reflect);
shr r23=r20,8-2;;
add r22=r22,r23;;
ld4 r21=[r22];;
@@ -938,7 +937,7 @@ 1: // check the guest VHPT
(p7) br.cond.spnt.few page_not_present;;
#ifdef FAST_REFLECT_CNT
- movl r21=perfcounter+FAST_VHPT_TRANSLATE_PERFC_OFS;;
+ movl r21=PERFC(fast_vhpt_translate);;
ld4 r22=[r21];;
adds r22=1,r22;;
st4 [r21]=r22;;
@@ -968,7 +967,7 @@ END(fast_tlb_miss_reflect)
// we get here if fast_insert fails (e.g. due to metaphysical lookup)
ENTRY(recover_and_page_fault)
#ifdef PERF_COUNTERS
- movl r21=perfcounters + RECOVER_TO_PAGE_FAULT_PERFC_OFS;;
+ movl r21=PERFC(recover_to_page_fault);;
ld4 r22=[r21];;
adds r22=1,r22;;
st4 [r21]=r22;;
@@ -1832,7 +1831,7 @@ END(hyper_ptc_ga)
// recovery block for hyper_itc metaphysical memory lookup
ENTRY(recover_and_dispatch_break_fault)
#ifdef PERF_COUNTERS
- movl r21=perfcounters + RECOVER_TO_BREAK_FAULT_PERFC_OFS;;
+ movl r21=PERFC(recover_to_break_fault);;
ld4 r22=[r21];;
adds r22=1,r22;;
st4 [r21]=r22;;
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/ia64/xen/privop_stat.c
--- a/xen/arch/ia64/xen/privop_stat.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/ia64/xen/privop_stat.c Tue Mar 27 16:35:37 2007 +0100
@@ -10,48 +10,39 @@ struct privop_addr_count {
unsigned long addr[PRIVOP_COUNT_NADDRS];
unsigned int count[PRIVOP_COUNT_NADDRS];
unsigned int overflow;
- atomic_t *perfc_addr;
- atomic_t *perfc_count;
- atomic_t *perfc_overflow;
};
-#undef PERFCOUNTER
+struct privop_addr_info {
+ enum perfcounter perfc_addr;
+ enum perfcounter perfc_count;
+ enum perfcounter perfc_overflow;
+};
+
#define PERFCOUNTER(var, name)
-
-#undef PERFCOUNTER_CPU
-#define PERFCOUNTER_CPU(var, name)
-
-#undef PERFCOUNTER_ARRAY
#define PERFCOUNTER_ARRAY(var, name, size)
-#undef PERFSTATUS
#define PERFSTATUS(var, name)
-
-#undef PERFSTATUS_CPU
-#define PERFSTATUS_CPU(var, name)
-
-#undef PERFSTATUS_ARRAY
#define PERFSTATUS_ARRAY(var, name, size)
-#undef PERFPRIVOPADDR
#define PERFPRIVOPADDR(name) \
{ \
- { 0 }, { 0 }, 0, \
- perfcounters.privop_addr_##name##_addr, \
- perfcounters.privop_addr_##name##_count, \
- perfcounters.privop_addr_##name##_overflow \
+ PERFC_privop_addr_##name##_addr, \
+ PERFC_privop_addr_##name##_count, \
+ PERFC_privop_addr_##name##_overflow \
},
-static struct privop_addr_count privop_addr_counter[] = {
+static const struct privop_addr_info privop_addr_info[] = {
#include <asm/perfc_defn.h>
};
#define PRIVOP_COUNT_NINSTS \
- (sizeof(privop_addr_counter) / sizeof(privop_addr_counter[0]))
+ (sizeof(privop_addr_info) / sizeof(privop_addr_info[0]))
+
+static DEFINE_PER_CPU(struct privop_addr_count[PRIVOP_COUNT_NINSTS],
privop_addr_counter);
void privop_count_addr(unsigned long iip, enum privop_inst inst)
{
- struct privop_addr_count *v = &privop_addr_counter[inst];
+ struct privop_addr_count *v = this_cpu(privop_addr_counter) + inst;
int i;
if (inst >= PRIVOP_COUNT_NINSTS)
@@ -72,31 +63,44 @@ void privop_count_addr(unsigned long iip
void gather_privop_addrs(void)
{
- int i, j;
- atomic_t *v;
- for (i = 0; i < PRIVOP_COUNT_NINSTS; i++) {
- /* Note: addresses are truncated! */
- v = privop_addr_counter[i].perfc_addr;
- for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
- atomic_set(&v[j], privop_addr_counter[i].addr[j]);
+ unsigned int cpu;
- v = privop_addr_counter[i].perfc_count;
- for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
- atomic_set(&v[j], privop_addr_counter[i].count[j]);
+ for_each_cpu ( cpu ) {
+ perfc_t *perfcounters = per_cpu(perfcounters, cpu);
+ struct privop_addr_count *s = per_cpu(privop_addr_counter, cpu);
+ int i, j;
+
+ for (i = 0; i < PRIVOP_COUNT_NINSTS; i++, s++) {
+ perfc_t *d;
+
+ /* Note: addresses are truncated! */
+ d = perfcounters + privop_addr_info[i].perfc_addr;
+ for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
+ d[j] = s->addr[j];
+
+ d = perfcounters + privop_addr_info[i].perfc_count;
+ for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
+ d[j] = s->count[j];
- atomic_set(privop_addr_counter[i].perfc_overflow,
- privop_addr_counter[i].overflow);
+ perfcounters[privop_addr_info[i].perfc_overflow] =
+ s->overflow;
+ }
}
}
void reset_privop_addrs(void)
{
- int i, j;
- for (i = 0; i < PRIVOP_COUNT_NINSTS; i++) {
- struct privop_addr_count *v = &privop_addr_counter[i];
- for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
- v->addr[j] = v->count[j] = 0;
- v->overflow = 0;
+ unsigned int cpu;
+
+ for_each_cpu ( cpu ) {
+ struct privop_addr_count *v = per_cpu(privop_addr_counter, cpu);
+ int i, j;
+
+ for (i = 0; i < PRIVOP_COUNT_NINSTS; i++, v++) {
+ for (j = 0; j < PRIVOP_COUNT_NADDRS; j++)
+ v->addr[j] = v->count[j] = 0;
+ v->overflow = 0;
+ }
}
}
#endif
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/ia64/xen/vhpt.c
--- a/xen/arch/ia64/xen/vhpt.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/ia64/xen/vhpt.c Tue Mar 27 16:35:37 2007 +0100
@@ -512,7 +512,7 @@ void gather_vhpt_stats(void)
for (i = 0; i < VHPT_NUM_ENTRIES; i++, v++)
if (!(v->ti_tag & INVALID_TI_TAG))
vhpt_valid++;
- perfc_seta(vhpt_valid_entries, cpu, vhpt_valid);
- }
-}
-#endif
+ per_cpu(perfcounters, cpu)[PERFC_vhpt_valid_entries] =
vhpt_valid;
+ }
+}
+#endif
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/mm.c
--- a/xen/arch/x86/mm.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/mm.c Tue Mar 27 16:35:37 2007 +0100
@@ -1969,6 +1969,8 @@ int do_mmuext_op(
if ( unlikely(!guest_handle_is_null(pdone)) )
(void)copy_from_guest(&done, pdone, 1);
}
+ else
+ perfc_incr(calls_to_mmuext_op);
if ( unlikely(!guest_handle_okay(uops, count)) )
{
@@ -2223,6 +2225,8 @@ int do_mmuext_op(
UNLOCK_BIGLOCK(d);
+ perfc_add(num_mmuext_ops, i);
+
out:
/* Add incremental work we have done to the @done output parameter. */
if ( unlikely(!guest_handle_is_null(pdone)) )
@@ -2257,6 +2261,8 @@ int do_mmu_update(
if ( unlikely(!guest_handle_is_null(pdone)) )
(void)copy_from_guest(&done, pdone, 1);
}
+ else
+ perfc_incr(calls_to_mmu_update);
if ( unlikely(!guest_handle_okay(ureqs, count)) )
{
@@ -2272,9 +2278,6 @@ int do_mmu_update(
domain_mmap_cache_init(&mapcache);
domain_mmap_cache_init(&sh_mapcache);
-
- perfc_incrc(calls_to_mmu_update);
- perfc_addc(num_page_updates, count);
LOCK_BIGLOCK(d);
@@ -2438,6 +2441,8 @@ int do_mmu_update(
domain_mmap_cache_destroy(&mapcache);
domain_mmap_cache_destroy(&sh_mapcache);
+ perfc_add(num_page_updates, i);
+
out:
/* Add incremental work we have done to the @done output parameter. */
if ( unlikely(!guest_handle_is_null(pdone)) )
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/x86_32/asm-offsets.c
--- a/xen/arch/x86/x86_32/asm-offsets.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/x86_32/asm-offsets.c Tue Mar 27 16:35:37 2007 +0100
@@ -107,20 +107,10 @@ void __dummy__(void)
BLANK();
#if PERF_COUNTERS
- OFFSET(PERFC_hypercalls, struct perfcounter, hypercalls);
- OFFSET(PERFC_exceptions, struct perfcounter, exceptions);
+ DEFINE(PERFC_hypercalls, PERFC_hypercalls);
+ DEFINE(PERFC_exceptions, PERFC_exceptions);
BLANK();
#endif
-
- OFFSET(MULTICALL_op, struct multicall_entry, op);
- OFFSET(MULTICALL_arg0, struct multicall_entry, args[0]);
- OFFSET(MULTICALL_arg1, struct multicall_entry, args[1]);
- OFFSET(MULTICALL_arg2, struct multicall_entry, args[2]);
- OFFSET(MULTICALL_arg3, struct multicall_entry, args[3]);
- OFFSET(MULTICALL_arg4, struct multicall_entry, args[4]);
- OFFSET(MULTICALL_arg5, struct multicall_entry, args[5]);
- OFFSET(MULTICALL_result, struct multicall_entry, result);
- BLANK();
DEFINE(FIXMAP_apic_base, fix_to_virt(FIX_APIC_BASE));
BLANK();
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/x86_32/entry.S
--- a/xen/arch/x86/x86_32/entry.S Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/x86_32/entry.S Tue Mar 27 16:35:37 2007 +0100
@@ -173,7 +173,7 @@ ENTRY(hypercall)
GET_CURRENT(%ebx)
cmpl $NR_hypercalls,%eax
jae bad_hypercall
- PERFC_INCR(PERFC_hypercalls, %eax)
+ PERFC_INCR(PERFC_hypercalls, %eax, %ebx)
#ifndef NDEBUG
/* Create shadow parameters and corrupt those not used by this call. */
pushl %eax
@@ -429,7 +429,7 @@ 1: xorl %eax,%eax
movl %esp,%edx
pushl %edx # push the cpu_user_regs pointer
GET_CURRENT(%ebx)
- PERFC_INCR(PERFC_exceptions, %eax)
+ PERFC_INCR(PERFC_exceptions, %eax, %ebx)
call *exception_table(,%eax,4)
addl $4,%esp
movl UREGS_eflags(%esp),%eax
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/x86_64/asm-offsets.c
--- a/xen/arch/x86/x86_64/asm-offsets.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/x86_64/asm-offsets.c Tue Mar 27 16:35:37 2007 +0100
@@ -121,30 +121,8 @@ void __dummy__(void)
BLANK();
#if PERF_COUNTERS
- OFFSET(PERFC_hypercalls, struct perfcounter, hypercalls);
- OFFSET(PERFC_exceptions, struct perfcounter, exceptions);
- BLANK();
-#endif
-
- OFFSET(MULTICALL_op, struct multicall_entry, op);
- OFFSET(MULTICALL_arg0, struct multicall_entry, args[0]);
- OFFSET(MULTICALL_arg1, struct multicall_entry, args[1]);
- OFFSET(MULTICALL_arg2, struct multicall_entry, args[2]);
- OFFSET(MULTICALL_arg3, struct multicall_entry, args[3]);
- OFFSET(MULTICALL_arg4, struct multicall_entry, args[4]);
- OFFSET(MULTICALL_arg5, struct multicall_entry, args[5]);
- OFFSET(MULTICALL_result, struct multicall_entry, result);
- BLANK();
-
-#ifdef CONFIG_COMPAT
- OFFSET(COMPAT_MULTICALL_op, struct compat_multicall_entry, op);
- OFFSET(COMPAT_MULTICALL_arg0, struct compat_multicall_entry, args[0]);
- OFFSET(COMPAT_MULTICALL_arg1, struct compat_multicall_entry, args[1]);
- OFFSET(COMPAT_MULTICALL_arg2, struct compat_multicall_entry, args[2]);
- OFFSET(COMPAT_MULTICALL_arg3, struct compat_multicall_entry, args[3]);
- OFFSET(COMPAT_MULTICALL_arg4, struct compat_multicall_entry, args[4]);
- OFFSET(COMPAT_MULTICALL_arg5, struct compat_multicall_entry, args[5]);
- OFFSET(COMPAT_MULTICALL_result, struct compat_multicall_entry, result);
+ DEFINE(PERFC_hypercalls, PERFC_hypercalls);
+ DEFINE(PERFC_exceptions, PERFC_exceptions);
BLANK();
#endif
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/x86_64/compat/entry.S
--- a/xen/arch/x86/x86_64/compat/entry.S Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/x86_64/compat/entry.S Tue Mar 27 16:35:37 2007 +0100
@@ -57,7 +57,7 @@ ENTRY(compat_hypercall)
movl UREGS_rbx(%rsp),%edi /* Arg 1 */
#endif
leaq compat_hypercall_table(%rip),%r10
- PERFC_INCR(PERFC_hypercalls, %rax)
+ PERFC_INCR(PERFC_hypercalls, %rax, %rbx)
callq *(%r10,%rax,8)
#ifndef NDEBUG
/* Deliberately corrupt parameter regs used by this hypercall. */
diff -r 3375391fb0c9 -r 96f167771979 xen/arch/x86/x86_64/entry.S
--- a/xen/arch/x86/x86_64/entry.S Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/arch/x86/x86_64/entry.S Tue Mar 27 16:35:37 2007 +0100
@@ -147,7 +147,7 @@ ENTRY(syscall_enter)
pushq UREGS_rip+8(%rsp)
#endif
leaq hypercall_table(%rip),%r10
- PERFC_INCR(PERFC_hypercalls, %rax)
+ PERFC_INCR(PERFC_hypercalls, %rax, %rbx)
callq *(%r10,%rax,8)
#ifndef NDEBUG
/* Deliberately corrupt parameter regs used by this hypercall. */
@@ -396,7 +396,7 @@ 1: movq %rsp,%rdi
movl UREGS_entry_vector(%rsp),%eax
leaq exception_table(%rip),%rdx
GET_CURRENT(%rbx)
- PERFC_INCR(PERFC_exceptions, %rax)
+ PERFC_INCR(PERFC_exceptions, %rax, %rbx)
callq *(%rdx,%rax,8)
testb $3,UREGS_cs(%rsp)
jz restore_all_xen
diff -r 3375391fb0c9 -r 96f167771979 xen/common/multicall.c
--- a/xen/common/multicall.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/common/multicall.c Tue Mar 27 16:35:37 2007 +0100
@@ -10,6 +10,7 @@
#include <xen/event.h>
#include <xen/multicall.h>
#include <xen/guest_access.h>
+#include <xen/perfc.h>
#include <asm/current.h>
#include <asm/hardirq.h>
@@ -69,14 +70,18 @@ do_multicall(
guest_handle_add_offset(call_list, 1);
}
+ perfc_incr(calls_to_multicall);
+ perfc_add(calls_from_multicall, nr_calls);
mcs->flags = 0;
return 0;
fault:
+ perfc_incr(calls_to_multicall);
mcs->flags = 0;
return -EFAULT;
preempted:
+ perfc_add(calls_from_multicall, i);
mcs->flags = 0;
return hypercall_create_continuation(
__HYPERVISOR_multicall, "hi", call_list, nr_calls-i);
diff -r 3375391fb0c9 -r 96f167771979 xen/common/perfc.c
--- a/xen/common/perfc.c Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/common/perfc.c Tue Mar 27 16:35:37 2007 +0100
@@ -10,81 +10,98 @@
#include <public/sysctl.h>
#include <asm/perfc.h>
-#undef PERFCOUNTER
-#undef PERFCOUNTER_CPU
-#undef PERFCOUNTER_ARRAY
-#undef PERFSTATUS
-#undef PERFSTATUS_CPU
-#undef PERFSTATUS_ARRAY
#define PERFCOUNTER( var, name ) { name, TYPE_SINGLE, 0 },
-#define PERFCOUNTER_CPU( var, name ) { name, TYPE_CPU, 0 },
#define PERFCOUNTER_ARRAY( var, name, size ) { name, TYPE_ARRAY, size },
#define PERFSTATUS( var, name ) { name, TYPE_S_SINGLE, 0 },
-#define PERFSTATUS_CPU( var, name ) { name, TYPE_S_CPU, 0 },
#define PERFSTATUS_ARRAY( var, name, size ) { name, TYPE_S_ARRAY, size },
-static struct {
- char *name;
- enum { TYPE_SINGLE, TYPE_CPU, TYPE_ARRAY,
- TYPE_S_SINGLE, TYPE_S_CPU, TYPE_S_ARRAY
+static const struct {
+ const char *name;
+ enum { TYPE_SINGLE, TYPE_ARRAY,
+ TYPE_S_SINGLE, TYPE_S_ARRAY
} type;
- int nr_elements;
+ unsigned int nr_elements;
} perfc_info[] = {
#include <xen/perfc_defn.h>
};
#define NR_PERFCTRS (sizeof(perfc_info) / sizeof(perfc_info[0]))
-struct perfcounter perfcounters;
+DEFINE_PER_CPU(perfc_t[NUM_PERFCOUNTERS], perfcounters);
void perfc_printall(unsigned char key)
{
- unsigned int i, j, sum;
+ unsigned int i, j;
s_time_t now = NOW();
- atomic_t *counters = (atomic_t *)&perfcounters;
printk("Xen performance counters SHOW (now = 0x%08X:%08X)\n",
(u32)(now>>32), (u32)now);
- for ( i = 0; i < NR_PERFCTRS; i++ )
- {
+ for ( i = j = 0; i < NR_PERFCTRS; i++ )
+ {
+ unsigned int k, cpu;
+ unsigned long long sum = 0;
+
printk("%-32s ", perfc_info[i].name);
switch ( perfc_info[i].type )
{
case TYPE_SINGLE:
case TYPE_S_SINGLE:
- printk("TOTAL[%10d]", atomic_read(&counters[0]));
- counters += 1;
- break;
- case TYPE_CPU:
- case TYPE_S_CPU:
- sum = 0;
- for_each_online_cpu ( j )
- sum += atomic_read(&counters[j]);
- printk("TOTAL[%10u]", sum);
+ for_each_online_cpu ( cpu )
+ sum += per_cpu(perfcounters, cpu)[j];
+ printk("TOTAL[%12Lu]", sum);
+ if ( sum )
+ {
+ k = 0;
+ for_each_online_cpu ( cpu )
+ {
+ if ( k > 0 && (k % 4) == 0 )
+ printk("\n%46s", "");
+ printk(" CPU%02u[%10"PRIperfc"u]", cpu,
per_cpu(perfcounters, cpu)[j]);
+ ++k;
+ }
+ }
+ ++j;
+ break;
+ case TYPE_ARRAY:
+ case TYPE_S_ARRAY:
+ for_each_online_cpu ( cpu )
+ {
+ perfc_t *counters = per_cpu(perfcounters, cpu) + j;
+
+ for ( k = 0; k < perfc_info[i].nr_elements; k++ )
+ sum += counters[k];
+ }
+ printk("TOTAL[%12Lu]", sum);
if (sum)
{
- for_each_online_cpu ( j )
- printk(" CPU%02d[%10d]", j, atomic_read(&counters[j]));
- }
- counters += NR_CPUS;
- break;
- case TYPE_ARRAY:
- case TYPE_S_ARRAY:
- for ( j = sum = 0; j < perfc_info[i].nr_elements; j++ )
- sum += atomic_read(&counters[j]);
- printk("TOTAL[%10u]", sum);
#ifdef PERF_ARRAYS
- if (sum)
- {
- for ( j = 0; j < perfc_info[i].nr_elements; j++ )
- {
- if ( (j % 4) == 0 )
- printk("\n ");
- printk(" ARR%02d[%10d]", j, atomic_read(&counters[j]));
- }
- }
+ for ( k = 0; k < perfc_info[i].nr_elements; k++ )
+ {
+ sum = 0;
+ for_each_online_cpu ( cpu )
+ sum += per_cpu(perfcounters, cpu)[j + k];
+ if ( (k % 4) == 0 )
+ printk("\n%16s", "");
+ printk(" ARR%02u[%10Lu]", k, sum);
+ }
+#else
+ k = 0;
+ for_each_online_cpu ( cpu )
+ {
+ perfc_t *counters = per_cpu(perfcounters, cpu) + j;
+ unsigned int n;
+
+ sum = 0;
+ for ( n = 0; n < perfc_info[i].nr_elements; n++ )
+ sum += counters[n];
+ if ( k > 0 && (k % 4) == 0 )
+ printk("\n%46s", "");
+ printk(" CPU%02u[%10Lu]", cpu, sum);
+ ++k;
+ }
#endif
- counters += j;
+ }
+ j += perfc_info[i].nr_elements;
break;
}
printk("\n");
@@ -97,7 +114,6 @@ void perfc_reset(unsigned char key)
{
unsigned int i, j;
s_time_t now = NOW();
- atomic_t *counters = (atomic_t *)&perfcounters;
if ( key != '\0' )
printk("Xen performance counters RESET (now = 0x%08X:%08X)\n",
@@ -105,43 +121,39 @@ void perfc_reset(unsigned char key)
/* leave STATUS counters alone -- don't reset */
- for ( i = 0; i < NR_PERFCTRS; i++ )
- {
- switch ( perfc_info[i].type )
- {
- case TYPE_SINGLE:
- atomic_set(&counters[0],0);
- case TYPE_S_SINGLE:
- counters += 1;
- break;
- case TYPE_CPU:
- for ( j = 0; j < NR_CPUS; j++ )
- atomic_set(&counters[j],0);
- case TYPE_S_CPU:
- counters += NR_CPUS;
- break;
- case TYPE_ARRAY:
- for ( j = 0; j < perfc_info[i].nr_elements; j++ )
- atomic_set(&counters[j],0);
- case TYPE_S_ARRAY:
- counters += perfc_info[i].nr_elements;
- break;
- }
- }
-
- arch_perfc_reset ();
+ for ( i = j = 0; i < NR_PERFCTRS; i++ )
+ {
+ unsigned int cpu;
+
+ switch ( perfc_info[i].type )
+ {
+ case TYPE_SINGLE:
+ for_each_cpu ( cpu )
+ per_cpu(perfcounters, cpu)[j] = 0;
+ case TYPE_S_SINGLE:
+ ++j;
+ break;
+ case TYPE_ARRAY:
+ for_each_cpu ( cpu )
+ memset(per_cpu(perfcounters, cpu) + j, 0,
+ perfc_info[i].nr_elements * sizeof(perfc_t));
+ case TYPE_S_ARRAY:
+ j += perfc_info[i].nr_elements;
+ break;
+ }
+ }
+
+ arch_perfc_reset();
}
static xen_sysctl_perfc_desc_t perfc_d[NR_PERFCTRS];
static xen_sysctl_perfc_val_t *perfc_vals;
-static int perfc_nbr_vals;
+static unsigned int perfc_nbr_vals;
static int perfc_init = 0;
static int perfc_copy_info(XEN_GUEST_HANDLE_64(xen_sysctl_perfc_desc_t) desc,
XEN_GUEST_HANDLE_64(xen_sysctl_perfc_val_t) val)
{
- unsigned int i, j;
- unsigned int v = 0;
- atomic_t *counters = (atomic_t *)&perfcounters;
+ unsigned int i, j, v;
/* We only copy the name and array-size information once. */
if ( !perfc_init )
@@ -154,11 +166,7 @@ static int perfc_copy_info(XEN_GUEST_HAN
{
case TYPE_SINGLE:
case TYPE_S_SINGLE:
- perfc_d[i].nr_vals = 1;
- break;
- case TYPE_CPU:
- case TYPE_S_CPU:
- perfc_d[i].nr_vals = num_online_cpus();
+ perfc_d[i].nr_vals = num_possible_cpus();
break;
case TYPE_ARRAY:
case TYPE_S_ARRAY:
@@ -181,26 +189,31 @@ static int perfc_copy_info(XEN_GUEST_HAN
arch_perfc_gather();
/* We gather the counts together every time. */
- for ( i = 0; i < NR_PERFCTRS; i++ )
- {
- switch ( perfc_info[i].type )
- {
- case TYPE_SINGLE:
- case TYPE_S_SINGLE:
- perfc_vals[v++] = atomic_read(&counters[0]);
- counters += 1;
- break;
- case TYPE_CPU:
- case TYPE_S_CPU:
- for ( j = 0; j < perfc_d[i].nr_vals; j++ )
- perfc_vals[v++] = atomic_read(&counters[j]);
- counters += NR_CPUS;
- break;
- case TYPE_ARRAY:
- case TYPE_S_ARRAY:
- for ( j = 0; j < perfc_d[i].nr_vals; j++ )
- perfc_vals[v++] = atomic_read(&counters[j]);
- counters += perfc_info[i].nr_elements;
+ for ( i = j = v = 0; i < NR_PERFCTRS; i++ )
+ {
+ unsigned int cpu;
+
+ switch ( perfc_info[i].type )
+ {
+ case TYPE_SINGLE:
+ case TYPE_S_SINGLE:
+ for_each_cpu ( cpu )
+ perfc_vals[v++] = per_cpu(perfcounters, cpu)[j];
+ ++j;
+ break;
+ case TYPE_ARRAY:
+ case TYPE_S_ARRAY:
+ memset(perfc_vals + v, 0, perfc_d[i].nr_vals *
sizeof(*perfc_vals));
+ for_each_cpu ( cpu )
+ {
+ perfc_t *counters = per_cpu(perfcounters, cpu) + j;
+ unsigned int k;
+
+ for ( k = 0; k < perfc_d[i].nr_vals; k++ )
+ perfc_vals[v + k] += counters[k];
+ }
+ v += perfc_d[i].nr_vals;
+ j += perfc_info[i].nr_elements;
break;
}
}
@@ -224,14 +237,12 @@ int perfc_control(xen_sysctl_perfc_op_t
switch ( pc->cmd )
{
case XEN_SYSCTL_PERFCOP_reset:
- perfc_copy_info(pc->desc, pc->val);
+ rc = perfc_copy_info(pc->desc, pc->val);
perfc_reset(0);
- rc = 0;
break;
case XEN_SYSCTL_PERFCOP_query:
- perfc_copy_info(pc->desc, pc->val);
- rc = 0;
+ rc = perfc_copy_info(pc->desc, pc->val);
break;
default:
diff -r 3375391fb0c9 -r 96f167771979
xen/include/asm-ia64/linux-xen/asm/asmmacro.h
--- a/xen/include/asm-ia64/linux-xen/asm/asmmacro.h Tue Mar 27 16:23:52
2007 +0100
+++ b/xen/include/asm-ia64/linux-xen/asm/asmmacro.h Tue Mar 27 16:35:37
2007 +0100
@@ -116,4 +116,8 @@ 2:{ .mib; \
# define dv_serialize_instruction
#endif
+#ifdef PERF_COUNTERS
+#define PERFC(n) (THIS_CPU(perfcounters) + (IA64_PERFC_ ## n) * 4)
+#endif
+
#endif /* _ASM_IA64_ASMMACRO_H */
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-ia64/perfc_defn.h
--- a/xen/include/asm-ia64/perfc_defn.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-ia64/perfc_defn.h Tue Mar 27 16:35:37 2007 +0100
@@ -84,7 +84,7 @@ PERFCOUNTER_ARRAY(fast_reflect, "f
PERFCOUNTER_ARRAY(fast_reflect, "fast reflection", 0x80)
PERFSTATUS(vhpt_nbr_entries, "nbr of entries per VHPT")
-PERFSTATUS_CPU(vhpt_valid_entries, "nbr of valid entries in VHPT")
+PERFSTATUS(vhpt_valid_entries, "nbr of valid entries in VHPT")
PERFCOUNTER_ARRAY(vmx_mmio_access, "vmx_mmio_access", 8)
PERFCOUNTER_CPU(vmx_pal_emul, "vmx_pal_emul")
@@ -106,6 +106,8 @@ PERFSTATUS(privop_addr_##name##_overflow
PERFPRIVOPADDR(get_ifa)
PERFPRIVOPADDR(thash)
+
+#undef PERFPRIVOPADDR
#endif
// vhpt.c
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-ia64/privop_stat.h
--- a/xen/include/asm-ia64/privop_stat.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-ia64/privop_stat.h Tue Mar 27 16:35:37 2007 +0100
@@ -1,5 +1,5 @@
-#ifndef _XEN_UA64_PRIVOP_STAT_H
-#define _XEN_UA64_PRIVOP_STAT_H
+#ifndef _XEN_IA64_PRIVOP_STAT_H
+#define _XEN_IA64_PRIVOP_STAT_H
#include <asm/config.h>
#include <xen/types.h>
#include <public/xen.h>
@@ -9,30 +9,23 @@ extern void gather_privop_addrs(void);
extern void gather_privop_addrs(void);
extern void reset_privop_addrs(void);
-#undef PERFCOUNTER
#define PERFCOUNTER(var, name)
-
-#undef PERFCOUNTER_CPU
-#define PERFCOUNTER_CPU(var, name)
-
-#undef PERFCOUNTER_ARRAY
#define PERFCOUNTER_ARRAY(var, name, size)
-#undef PERFSTATUS
#define PERFSTATUS(var, name)
-
-#undef PERFSTATUS_CPU
-#define PERFSTATUS_CPU(var, name)
-
-#undef PERFSTATUS_ARRAY
#define PERFSTATUS_ARRAY(var, name, size)
-#undef PERFPRIVOPADDR
#define PERFPRIVOPADDR(name) privop_inst_##name,
enum privop_inst {
#include <asm/perfc_defn.h>
};
+
+#undef PERFCOUNTER
+#undef PERFCOUNTER_ARRAY
+
+#undef PERFSTATUS
+#undef PERFSTATUS_ARRAY
#undef PERFPRIVOPADDR
@@ -45,4 +38,4 @@ extern void privop_count_addr(unsigned l
#define reset_privop_addrs() do {} while (0)
#endif
-#endif /* _XEN_UA64_PRIVOP_STAT_H */
+#endif /* _XEN_IA64_PRIVOP_STAT_H */
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-x86/multicall.h
--- a/xen/include/asm-x86/multicall.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-x86/multicall.h Tue Mar 27 16:35:37 2007 +0100
@@ -6,84 +6,94 @@
#define __ASM_X86_MULTICALL_H__
#include <xen/errno.h>
-#include <asm/asm_defns.h>
#ifdef __x86_64__
#define do_multicall_call(_call) \
do { \
__asm__ __volatile__ ( \
- " movq "STR(MULTICALL_op)"(%0),%%rax; " \
+ " movq %c1(%0),%%rax; " \
+ " leaq hypercall_table(%%rip),%%rdi; " \
" cmpq $("STR(NR_hypercalls)"),%%rax; " \
" jae 2f; " \
- " leaq hypercall_table(%%rip),%%rdi; " \
- " leaq (%%rdi,%%rax,8),%%rax; " \
- " movq "STR(MULTICALL_arg0)"(%0),%%rdi; " \
- " movq "STR(MULTICALL_arg1)"(%0),%%rsi; " \
- " movq "STR(MULTICALL_arg2)"(%0),%%rdx; " \
- " movq "STR(MULTICALL_arg3)"(%0),%%rcx; " \
- " movq "STR(MULTICALL_arg4)"(%0),%%r8; " \
- " callq *(%%rax); " \
- "1: movq %%rax,"STR(MULTICALL_result)"(%0)\n" \
+ " movq (%%rdi,%%rax,8),%%rax; " \
+ " movq %c2+0*%c3(%0),%%rdi; " \
+ " movq %c2+1*%c3(%0),%%rsi; " \
+ " movq %c2+2*%c3(%0),%%rdx; " \
+ " movq %c2+3*%c3(%0),%%rcx; " \
+ " movq %c2+4*%c3(%0),%%r8; " \
+ " callq *%%rax; " \
+ "1: movq %%rax,%c4(%0)\n" \
".section .fixup,\"ax\"\n" \
"2: movq $-"STR(ENOSYS)",%%rax\n" \
" jmp 1b\n" \
".previous\n" \
- : : "b" (_call) \
+ : \
+ : "b" (_call), \
+ "i" (offsetof(__typeof__(*_call), op)), \
+ "i" (offsetof(__typeof__(*_call), args)), \
+ "i" (sizeof(*(_call)->args)), \
+ "i" (offsetof(__typeof__(*_call), result)) \
/* all the caller-saves registers */ \
: "rax", "rcx", "rdx", "rsi", "rdi", \
"r8", "r9", "r10", "r11" ); \
} while ( 0 )
-#define compat_multicall_call(_call) \
- do { \
- __asm__ __volatile__ ( \
- " movl "STR(COMPAT_MULTICALL_op)"(%0),%%eax; " \
- " leaq compat_hypercall_table(%%rip),%%rdi; " \
- " cmpl $("STR(NR_hypercalls)"),%%eax; " \
- " jae 2f; " \
- " movq (%%rdi,%%rax,8),%%rax; " \
- " movl "STR(COMPAT_MULTICALL_arg0)"(%0),%%edi; " \
- " movl "STR(COMPAT_MULTICALL_arg1)"(%0),%%esi; " \
- " movl "STR(COMPAT_MULTICALL_arg2)"(%0),%%edx; " \
- " movl "STR(COMPAT_MULTICALL_arg3)"(%0),%%ecx; " \
- " movl "STR(COMPAT_MULTICALL_arg4)"(%0),%%r8d; " \
- " callq *%%rax; " \
- "1: movl %%eax,"STR(COMPAT_MULTICALL_result)"(%0)\n"\
- ".section .fixup,\"ax\"\n" \
- "2: movl $-"STR(ENOSYS)",%%eax\n" \
- " jmp 1b\n" \
- ".previous\n" \
- : : "b" (_call) \
- /* all the caller-saves registers */ \
- : "rax", "rcx", "rdx", "rsi", "rdi", \
- "r8", "r9", "r10", "r11" ); \
- } while ( 0 )
+#define compat_multicall_call(_call) \
+ __asm__ __volatile__ ( \
+ " movl %c1(%0),%%eax; " \
+ " leaq compat_hypercall_table(%%rip),%%rdi; "\
+ " cmpl $("STR(NR_hypercalls)"),%%eax; " \
+ " jae 2f; " \
+ " movq (%%rdi,%%rax,8),%%rax; " \
+ " movl %c2+0*%c3(%0),%%edi; " \
+ " movl %c2+1*%c3(%0),%%esi; " \
+ " movl %c2+2*%c3(%0),%%edx; " \
+ " movl %c2+3*%c3(%0),%%ecx; " \
+ " movl %c2+4*%c3(%0),%%r8d; " \
+ " callq *%%rax; " \
+ "1: movl %%eax,%c4(%0)\n" \
+ ".section .fixup,\"ax\"\n" \
+ "2: movl $-"STR(ENOSYS)",%%eax\n" \
+ " jmp 1b\n" \
+ ".previous\n" \
+ : \
+ : "b" (_call), \
+ "i" (offsetof(__typeof__(*_call), op)), \
+ "i" (offsetof(__typeof__(*_call), args)), \
+ "i" (sizeof(*(_call)->args)), \
+ "i" (offsetof(__typeof__(*_call), result)) \
+ /* all the caller-saves registers */ \
+ : "rax", "rcx", "rdx", "rsi", "rdi", \
+ "r8", "r9", "r10", "r11" ) \
#else
#define do_multicall_call(_call) \
- do { \
__asm__ __volatile__ ( \
- " pushl "STR(MULTICALL_arg4)"(%0); " \
- " pushl "STR(MULTICALL_arg3)"(%0); " \
- " pushl "STR(MULTICALL_arg2)"(%0); " \
- " pushl "STR(MULTICALL_arg1)"(%0); " \
- " pushl "STR(MULTICALL_arg0)"(%0); " \
- " movl "STR(MULTICALL_op)"(%0),%%eax; " \
+ " movl %c1(%0),%%eax; " \
+ " pushl %c2+4*%c3(%0); " \
+ " pushl %c2+3*%c3(%0); " \
+ " pushl %c2+2*%c3(%0); " \
+ " pushl %c2+1*%c3(%0); " \
+ " pushl %c2+0*%c3(%0); " \
" cmpl $("STR(NR_hypercalls)"),%%eax; " \
" jae 2f; " \
" call *hypercall_table(,%%eax,4); " \
- "1: movl %%eax,"STR(MULTICALL_result)"(%0); " \
+ "1: movl %%eax,%c4(%0); " \
" addl $20,%%esp\n" \
".section .fixup,\"ax\"\n" \
"2: movl $-"STR(ENOSYS)",%%eax\n" \
" jmp 1b\n" \
".previous\n" \
- : : "b" (_call) \
+ : \
+ : "bSD" (_call), \
+ "i" (offsetof(__typeof__(*_call), op)), \
+ "i" (offsetof(__typeof__(*_call), args)), \
+ "i" (sizeof(*(_call)->args)), \
+ "i" (offsetof(__typeof__(*_call), result)) \
/* all the caller-saves registers */ \
- : "eax", "ecx", "edx" ); \
- } while ( 0 )
+ : "eax", "ecx", "edx" ) \
#endif
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-x86/perfc_defn.h
--- a/xen/include/asm-x86/perfc_defn.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-x86/perfc_defn.h Tue Mar 27 16:35:37 2007 +0100
@@ -18,9 +18,11 @@ PERFCOUNTER_CPU(apic_timer,
PERFCOUNTER_CPU(domain_page_tlb_flush, "domain page tlb flushes")
-PERFCOUNTER_CPU(calls_to_mmu_update, "calls_to_mmu_update")
-PERFCOUNTER_CPU(num_page_updates, "num_page_updates")
-PERFCOUNTER_CPU(calls_to_update_va, "calls_to_update_va_map")
+PERFCOUNTER(calls_to_mmuext_op, "calls to mmuext_op")
+PERFCOUNTER(num_mmuext_ops, "mmuext ops")
+PERFCOUNTER(calls_to_mmu_update, "calls to mmu_update")
+PERFCOUNTER(num_page_updates, "page updates")
+PERFCOUNTER(calls_to_update_va, "calls to update_va_map")
PERFCOUNTER_CPU(page_faults, "page faults")
PERFCOUNTER_CPU(copy_user_faults, "copy_user faults")
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-x86/x86_32/asm_defns.h
--- a/xen/include/asm-x86/x86_32/asm_defns.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-x86/x86_32/asm_defns.h Tue Mar 27 16:35:37 2007 +0100
@@ -1,5 +1,7 @@
#ifndef __X86_32_ASM_DEFNS_H__
#define __X86_32_ASM_DEFNS_H__
+
+#include <asm/percpu.h>
#ifndef NDEBUG
/* Indicate special exception stack frame by inverting the frame pointer. */
@@ -47,10 +49,14 @@
1:
#ifdef PERF_COUNTERS
-#define PERFC_INCR(_name,_idx) \
- lock incl perfcounters+_name(,_idx,4)
+#define PERFC_INCR(_name,_idx,_cur) \
+ pushl _cur; \
+ movl VCPU_processor(_cur),_cur; \
+ shll $PERCPU_SHIFT,_cur; \
+ incl per_cpu__perfcounters+_name*4(_cur,_idx,4);\
+ popl _cur
#else
-#define PERFC_INCR(_name,_idx)
+#define PERFC_INCR(_name,_idx,_cur)
#endif
#ifdef CONFIG_X86_SUPERVISOR_MODE_KERNEL
diff -r 3375391fb0c9 -r 96f167771979 xen/include/asm-x86/x86_64/asm_defns.h
--- a/xen/include/asm-x86/x86_64/asm_defns.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/asm-x86/x86_64/asm_defns.h Tue Mar 27 16:35:37 2007 +0100
@@ -1,5 +1,7 @@
#ifndef __X86_64_ASM_DEFNS_H__
#define __X86_64_ASM_DEFNS_H__
+
+#include <asm/percpu.h>
#ifndef NDEBUG
/* Indicate special exception stack frame by inverting the frame pointer. */
@@ -47,13 +49,18 @@
popq %rdi;
#ifdef PERF_COUNTERS
-#define PERFC_INCR(_name,_idx) \
- pushq %rdx; \
- leaq perfcounters+_name(%rip),%rdx; \
- lock incl (%rdx,_idx,4); \
- popq %rdx;
+#define PERFC_INCR(_name,_idx,_cur) \
+ pushq _cur; \
+ movslq VCPU_processor(_cur),_cur; \
+ pushq %rdx; \
+ leaq per_cpu__perfcounters(%rip),%rdx; \
+ shlq $PERCPU_SHIFT,_cur; \
+ addq %rdx,_cur; \
+ popq %rdx; \
+ incl _name*4(_cur,_idx,4); \
+ popq _cur
#else
-#define PERFC_INCR(_name,_idx)
+#define PERFC_INCR(_name,_idx,_cur)
#endif
/* Work around AMD erratum #88 */
diff -r 3375391fb0c9 -r 96f167771979 xen/include/xen/perfc.h
--- a/xen/include/xen/perfc.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/xen/perfc.h Tue Mar 27 16:35:37 2007 +0100
@@ -6,102 +6,94 @@
#include <xen/lib.h>
#include <xen/smp.h>
-#include <asm/atomic.h>
+#include <xen/percpu.h>
/*
* NOTE: new counters must be defined in perfc_defn.h
*
* PERFCOUNTER (counter, string) define a new performance counter
- * PERFCOUNTER_CPU (counter, string, size) define a counter per CPU
- * PERFCOUNTER_ARRY (counter, string, size) define an array of counters
+ * PERFCOUNTER_ARRAY (counter, string, size) define an array of counters
*
* unlike "COUNTERS", "STATUS" variables DO NOT RESET
* PERFSTATUS (counter, string) define a new performance stauts
- * PERFSTATUS_CPU (counter, string, size) define a status var per CPU
- * PERFSTATUS_ARRY (counter, string, size) define an array of status vars
+ * PERFSTATUS_ARRAY (counter, string, size) define an array of status vars
*
* unsigned long perfc_value (counter) get value of a counter
- * unsigned long perfc_valuec (counter) get value of a per CPU counter
* unsigned long perfc_valuea (counter, index) get value of an array counter
* unsigned long perfc_set (counter, val) set value of a counter
- * unsigned long perfc_setc (counter, val) set value of a per CPU counter
* unsigned long perfc_seta (counter, index, val) set value of an array counter
* void perfc_incr (counter) increment a counter
- * void perfc_incrc (counter, index) increment a per CPU counter
+ * void perfc_decr (counter) decrement a status
* void perfc_incra (counter, index) increment an array counter
* void perfc_add (counter, value) add a value to a counter
- * void perfc_addc (counter, value) add a value to a per CPU counter
* void perfc_adda (counter, index, value) add a value to array counter
* void perfc_print (counter) print out the counter
*/
-#define PERFCOUNTER( var, name ) \
- atomic_t var[1];
-#define PERFCOUNTER_CPU( var, name ) \
- atomic_t var[NR_CPUS];
-#define PERFCOUNTER_ARRAY( var, name, size ) \
- atomic_t var[size];
-#define PERFSTATUS( var, name ) \
- atomic_t var[1];
-#define PERFSTATUS_CPU( var, name ) \
- atomic_t var[NR_CPUS];
-#define PERFSTATUS_ARRAY( var, name, size ) \
- atomic_t var[size];
+#define PERFCOUNTER( name, descr ) \
+ PERFC_ ## name,
+#define PERFCOUNTER_ARRAY( name, descr, size ) \
+ PERFC_ ## name, \
+ PERFC_LAST_ ## name = PERFC_ ## name + (size) - sizeof(char[2 * !!(size) -
1]),
-struct perfcounter {
+#define PERFSTATUS PERFCOUNTER
+#define PERFSTATUS_ARRAY PERFCOUNTER_ARRAY
+
+/* Compatibility: This should go away once all users got converted. */
+#define PERFCOUNTER_CPU PERFCOUNTER
+
+enum perfcounter {
#include <xen/perfc_defn.h>
+ NUM_PERFCOUNTERS
};
-extern struct perfcounter perfcounters;
+#undef PERFCOUNTER
+#undef PERFCOUNTER_ARRAY
+#undef PERFSTATUS
+#undef PERFSTATUS_ARRAY
-#define perfc_value(x) atomic_read(&perfcounters.x[0])
-#define perfc_valuec(x) atomic_read(&perfcounters.x[smp_processor_id()])
+typedef unsigned perfc_t;
+#define PRIperfc ""
+
+DECLARE_PER_CPU(perfc_t[NUM_PERFCOUNTERS], perfcounters);
+
+#define perfc_value(x) this_cpu(perfcounters)[PERFC_ ## x]
#define perfc_valuea(x,y) \
- ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ? \
- atomic_read(&perfcounters.x[y]) : 0 )
-#define perfc_set(x,v) atomic_set(&perfcounters.x[0], v)
-#define perfc_setc(x,v) atomic_set(&perfcounters.x[smp_processor_id()], v)
+ ( (y) <= PERFC_LAST_ ## x - PERFC_ ## x ? \
+ this_cpu(perfcounters)[PERFC_ ## x + (y)] : 0 )
+#define perfc_set(x,v) (this_cpu(perfcounters)[PERFC_ ## x] = (v))
#define perfc_seta(x,y,v) \
- do { \
- if ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ) \
- atomic_set(&perfcounters.x[y], v); \
- } while ( 0 )
-#define perfc_incr(x) atomic_inc(&perfcounters.x[0])
-#define perfc_decr(x) atomic_dec(&perfcounters.x[0])
-#define perfc_incrc(x) atomic_inc(&perfcounters.x[smp_processor_id()])
-#define perfc_decrc(x) atomic_dec(&perfcounters.x[smp_processor_id()])
+ ( (y) <= PERFC_LAST_ ## x - PERFC_ ## x ? \
+ this_cpu(perfcounters)[PERFC_ ## x + (y)] = (v) : (v) )
+#define perfc_incr(x) (++this_cpu(perfcounters)[PERFC_ ## x])
+#define perfc_decr(x) (--this_cpu(perfcounters)[PERFC_ ## x])
#define perfc_incra(x,y) \
- do { \
- if ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ) \
- atomic_inc(&perfcounters.x[y]); \
- } while ( 0 )
-#define perfc_add(x,y) atomic_add((y), &perfcounters.x[0])
-#define perfc_addc(x,y) atomic_add((y), &perfcounters.x[smp_processor_id()])
-#define perfc_adda(x,y,z) \
- do { \
- if ( (y) < (sizeof(perfcounters.x) / sizeof(*perfcounters.x)) ) \
- atomic_add((z), &perfcounters.x[y]); \
- } while ( 0 )
+ ( (y) <= PERFC_LAST_ ## x - PERFC_ ## x ? \
+ ++this_cpu(perfcounters)[PERFC_ ## x + (y)] : 0 )
+#define perfc_add(x,v) (this_cpu(perfcounters)[PERFC_ ## x] += (v))
+#define perfc_adda(x,y,v) \
+ ( (y) <= PERFC_LAST_ ## x - PERFC_ ## x ? \
+ this_cpu(perfcounters)[PERFC_ ## x + (y)] = (v) : (v) )
/*
* Histogram: special treatment for 0 and 1 count. After that equally spaced
* with last bucket taking the rest.
*/
#ifdef PERF_ARRAYS
-#define perfc_incr_histo(_x,_v,_n) \
- do { \
- if ( (_v) == 0 ) \
- perfc_incra(_x, 0); \
- else if ( (_v) == 1 ) \
- perfc_incra(_x, 1); \
- else if ( (((_v)-2) / PERFC_ ## _n ## _BUCKET_SIZE) < \
- (PERFC_MAX_ ## _n - 3) ) \
- perfc_incra(_x, (((_v)-2) / PERFC_ ## _n ## _BUCKET_SIZE) + 2); \
- else \
- perfc_incra(_x, PERFC_MAX_ ## _n - 1); \
+#define perfc_incr_histo(x,v) \
+ do { \
+ if ( (v) == 0 ) \
+ perfc_incra(x, 0); \
+ else if ( (v) == 1 ) \
+ perfc_incra(x, 1); \
+ else if ( (((v) - 2) / PERFC_ ## x ## _BUCKET_SIZE) < \
+ (PERFC_LAST_ ## x - PERFC_ ## x - 2) ) \
+ perfc_incra(x, (((v) - 2) / PERFC_ ## x ## _BUCKET_SIZE) + 2); \
+ else \
+ perfc_incra(x, PERFC_LAST_ ## x - PERFC_ ## x); \
} while ( 0 )
#else
-#define perfc_incr_histo(_x,_v,_n) ((void)0)
+#define perfc_incr_histo(x,v) ((void)0)
#endif
struct xen_sysctl_perfc_op;
@@ -110,22 +102,20 @@ int perfc_control(struct xen_sysctl_perf
#else /* PERF_COUNTERS */
#define perfc_value(x) (0)
-#define perfc_valuec(x) (0)
#define perfc_valuea(x,y) (0)
#define perfc_set(x,v) ((void)0)
-#define perfc_setc(x,v) ((void)0)
#define perfc_seta(x,y,v) ((void)0)
#define perfc_incr(x) ((void)0)
#define perfc_decr(x) ((void)0)
-#define perfc_incrc(x) ((void)0)
-#define perfc_decrc(x) ((void)0)
#define perfc_incra(x,y) ((void)0)
#define perfc_decra(x,y) ((void)0)
#define perfc_add(x,y) ((void)0)
-#define perfc_addc(x,y) ((void)0)
#define perfc_adda(x,y,z) ((void)0)
#define perfc_incr_histo(x,y,z) ((void)0)
#endif /* PERF_COUNTERS */
+/* Compatibility: This should go away once all users got converted. */
+#define perfc_incrc perfc_incr
+
#endif /* __XEN_PERFC_H__ */
diff -r 3375391fb0c9 -r 96f167771979 xen/include/xen/perfc_defn.h
--- a/xen/include/xen/perfc_defn.h Tue Mar 27 16:23:52 2007 +0100
+++ b/xen/include/xen/perfc_defn.h Tue Mar 27 16:35:37 2007 +0100
@@ -5,6 +5,9 @@
#include <asm/perfc_defn.h>
PERFCOUNTER_ARRAY(hypercalls, "hypercalls", NR_hypercalls)
+
+PERFCOUNTER(calls_to_multicall, "calls to multicall")
+PERFCOUNTER(calls_from_multicall, "calls from multicall")
PERFCOUNTER_CPU(irqs, "#interrupts")
PERFCOUNTER_CPU(ipis, "#IPIs")
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