@@ -227,8 +227,6 @@ VGABIOS_REL_DATE="dd Mon yyyy"
The following variables can be used to tweak some aspects of the
hypervisor build.
-perfc=y
-perfc_arrays=y
lock_profile=y
lto=y
@@ -27,6 +27,20 @@ config FRAME_POINTER
maybe slower, but it gives very useful debugging information
in case of any Xen bugs.
+config PERF_COUNTERS
+ bool "Performance Counters"
+ ---help---
+ Enables software performance counters that allows you to analyze
+ bottlenecks in the system. To access this data you must use the
+ 'xenperf' tool.
+
+config PERF_ARRAYS
+ bool "Performance Counter Array Histograms"
+ depends on PERF_COUNTERS
+ ---help---
+ Enables software performance counter array histograms.
+
+
config VERBOSE_DEBUG
bool "Verbose debug messages"
default DEBUG
@@ -3,8 +3,6 @@
# If you change any of these configuration options then you must
# 'make clean' before rebuilding.
#
-perfc ?= n
-perfc_arrays ?= n
lock_profile ?= n
lto ?= n
@@ -12,11 +10,6 @@ lto ?= n
include $(XEN_ROOT)/Config.mk
-# Hardcoded configuration implications and dependencies.
-# Do this is a neater way if it becomes unwieldy.
-ifeq ($(perfc_arrays),y)
-perfc := y
-endif
ifneq ($(origin crash_debug),undefined)
$(error "You must use 'make menuconfig' to enable/disable crash_debug now.")
@@ -30,6 +23,9 @@ endif
ifneq ($(origin kexec),undefined)
$(error "You must use 'make menuconfig' to enable/disable kexec now.")
endif
+ifneq ($(origin perfc),undefined)
+$(error "You must use 'make menuconfig' to enable/disable perfc now.")
+endif
ifneq ($(origin verbose),undefined)
$(error "You must use 'make menuconfig' to enable/disable verbose now.")
endif
@@ -60,8 +56,6 @@ ifneq ($(clang),y)
CFLAGS += -Wa,--strip-local-absolute
endif
-CFLAGS-$(perfc) += -DPERF_COUNTERS
-CFLAGS-$(perfc_arrays) += -DPERF_ARRAYS
CFLAGS-$(lock_profile) += -DLOCK_PROFILE
CFLAGS-$(CONFIG_FRAME_POINTER) += -fno-omit-frame-pointer
@@ -3536,7 +3536,7 @@ void hvm_cpuid(unsigned int input, unsigned int *eax, unsigned int *ebx,
static uint64_t _hvm_rdtsc_intercept(void)
{
struct vcpu *curr = current;
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
struct domain *currd = curr->domain;
if ( currd->arch.vtsc )
@@ -1688,7 +1688,7 @@ void pv_soft_rdtsc(struct vcpu *v, struct cpu_user_regs *regs, int rdtscp)
spin_lock(&d->arch.vtsc_lock);
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
if ( guest_kernel_mode(v, regs) )
d->arch.vtsc_kerncount++;
else
@@ -1959,7 +1959,7 @@ static void dump_softtsc(unsigned char key)
printk(",khz=%"PRIu32, d->arch.tsc_khz);
if ( d->arch.incarnation )
printk(",inc=%"PRIu32, d->arch.incarnation);
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
if ( !(d->arch.vtsc_kerncount | d->arch.vtsc_usercount) )
printk("\n");
else
@@ -152,7 +152,7 @@ void __dummy__(void)
OFFSET(TRAPBOUNCE_eip, struct trap_bounce, eip);
BLANK();
-#if PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
DEFINE(ASM_PERFC_hypercalls, PERFC_hypercalls);
DEFINE(ASM_PERFC_exceptions, PERFC_exceptions);
BLANK();
@@ -26,6 +26,7 @@ obj-y += multicall.o
obj-y += notifier.o
obj-y += page_alloc.o
obj-$(CONFIG_HAS_PDX) += pdx.o
+obj-$(CONFIG_PERF_COUNTERS) += perfc.o
obj-y += preempt.o
obj-y += random.o
obj-y += rangeset.o
@@ -64,7 +65,6 @@ obj-$(CONFIG_XSPLICE) += xsplice_elf.o
obj-bin-$(CONFIG_X86) += $(foreach n,decompress bunzip2 unxz unlzma unlzo unlz4 earlycpio,$(n).init.o)
-obj-$(perfc) += perfc.o
obj-$(CONFIG_COMPAT) += $(addprefix compat/,domain.o kernel.o memory.o multicall.o xlat.o)
@@ -59,7 +59,7 @@ static struct keyhandler {
IRQ_KEYHANDLER('%', do_debug_key, "trap to xendbg", 0),
IRQ_KEYHANDLER('*', run_all_keyhandlers, "print all diagnostics", 0),
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
KEYHANDLER('p', perfc_printall, "print performance counters", 1),
KEYHANDLER('P', perfc_reset, "reset performance counters", 0),
#endif
@@ -78,7 +78,7 @@ void perfc_printall(unsigned char key)
printk("TOTAL[%12Lu]", sum);
if (sum)
{
-#ifdef PERF_ARRAYS
+#ifdef CONFIG_PERF_ARRAYS
for ( k = 0; k < perfc_info[i].nr_elements; k++ )
{
sum = 0;
@@ -115,7 +115,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl)
}
break;
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
case XEN_SYSCTL_perfc_op:
ret = perfc_control(&op->u.perfc_op);
break;
@@ -385,7 +385,7 @@ static always_inline void stac(void)
#endif
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#define PERFC_INCR(_name,_idx,_cur) \
pushq _cur; \
movslq VCPU_processor(_cur),_cur; \
@@ -377,7 +377,7 @@ struct arch_domain
hardware TSC scaling cases */
uint32_t incarnation; /* incremented every restore or live migrate
(possibly other cases in the future */
-#if !defined(NDEBUG) || defined(PERF_COUNTERS)
+#if !defined(NDEBUG) || defined(CONFIG_PERF_COUNTERS)
uint64_t vtsc_kerncount;
uint64_t vtsc_usercount;
#endif
@@ -1,7 +1,7 @@
#ifndef __XEN_PERFC_H__
#define __XEN_PERFC_H__
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#include <xen/lib.h>
#include <xen/smp.h>
@@ -76,7 +76,7 @@ DECLARE_PER_CPU(perfc_t[NUM_PERFCOUNTERS], perfcounters);
* Histogram: special treatment for 0 and 1 count. After that equally spaced
* with last bucket taking the rest.
*/
-#ifdef PERF_ARRAYS
+#ifdef CONFIG_PERF_ARRAYS
#define perfc_incr_histo(x,v) \
do { \
if ( (v) == 0 ) \
@@ -100,7 +100,7 @@ extern void perfc_printall(unsigned char key);
extern void perfc_reset(unsigned char key);
-#else /* PERF_COUNTERS */
+#else /* CONFIG_PERF_COUNTERS */
#define perfc_value(x) (0)
#define perfc_valuea(x,y) (0)
@@ -114,6 +114,6 @@ extern void perfc_reset(unsigned char key);
#define perfc_adda(x,y,z) ((void)0)
#define perfc_incr_histo(x,y,z) ((void)0)
-#endif /* PERF_COUNTERS */
+#endif /* CONFIG_PERF_COUNTERS */
#endif /* __XEN_PERFC_H__ */
@@ -39,7 +39,7 @@ DEFINE_XEN_GUEST_HANDLE(vcpu_runstate_info_compat_t);
* Enable and ease the use of scheduling related performance counters.
*
*/
-#ifdef PERF_COUNTERS
+#ifdef CONFIG_PERF_COUNTERS
#define SCHED_STATS
#endif
Convert the 'perfc' and 'perfc_arrays' options to Kconfig as CONFIG_PERF_COUNTERS and CONFIG_PERF_ARRAYS. Signed-off-by: Doug Goldstein <cardoe@cardoe.com> --- CC: Andrew Cooper <andrew.cooper3@citrix.com> CC: George Dunlap <George.Dunlap@eu.citrix.com> CC: Ian Jackson <ian.jackson@eu.citrix.com> CC: Jan Beulich <jbeulich@suse.com> CC: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> CC: Stefano Stabellini <sstabellini@kernel.org> CC: Tim Deegan <tim@xen.org> CC: Wei Liu <wei.liu2@citrix.com> --- INSTALL | 2 -- xen/Kconfig.debug | 14 ++++++++++++++ xen/Rules.mk | 12 +++--------- xen/arch/x86/hvm/hvm.c | 2 +- xen/arch/x86/time.c | 4 ++-- xen/arch/x86/x86_64/asm-offsets.c | 2 +- xen/common/Makefile | 2 +- xen/common/keyhandler.c | 2 +- xen/common/perfc.c | 2 +- xen/common/sysctl.c | 2 +- xen/include/asm-x86/asm_defns.h | 2 +- xen/include/asm-x86/domain.h | 2 +- xen/include/xen/perfc.h | 8 ++++---- xen/include/xen/sched.h | 2 +- 14 files changed, 32 insertions(+), 26 deletions(-)