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7006505: Use kstat info to identify SPARC processor

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Read Solaris kstat data to get more precise CPU information

Reviewed-by: iveresov, never, twisti, dholmes
This commit is contained in:
Vladimir Kozlov 2010-12-16 14:15:12 -08:00
parent b80ad03e3f
commit 9fd396ce55
8 changed files with 136 additions and 51 deletions
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2
hotspot/make/solaris/makefiles/buildtree.make
View file

@ -61,7 +61,7 @@ include $(GAMMADIR)/make/scm.make
QUIETLY$(MAKE_VERBOSE) = @
# For now, until the compiler is less wobbly:
TESTFLAGS = -Xbatch -showversion
TESTFLAGS = -Xbatch -Xmx32m -showversion
### maye ARCH_XXX instead?
ifdef USE_GCC

4
hotspot/make/solaris/makefiles/vm.make
View file

@ -119,6 +119,10 @@ else
LIBS += -lsocket -lsched -ldl $(LIBM) -lthread -lc
endif # sparcWorks
ifeq ("${Platform_arch}", "sparc")
LIBS += -lkstat
endif
# By default, link the *.o into the library, not the executable.
LINK_INTO$(LINK_INTO) = LIBJVM

10
hotspot/src/cpu/sparc/vm/sparc.ad
View file

@ -3556,7 +3556,7 @@ operand immP() %{
#ifdef _LP64
// Pointer Immediate: 64-bit
operand immP_set() %{
predicate(!VM_Version::is_niagara1_plus());
predicate(!VM_Version::is_niagara_plus());
match(ConP);
op_cost(5);
@ -3568,7 +3568,7 @@ operand immP_set() %{
// Pointer Immediate: 64-bit
// From Niagara2 processors on a load should be better than materializing.
operand immP_load() %{
predicate(VM_Version::is_niagara1_plus() && (n->bottom_type()->isa_oop_ptr() || (MacroAssembler::insts_for_set(n->get_ptr()) > 3)));
predicate(VM_Version::is_niagara_plus() && (n->bottom_type()->isa_oop_ptr() || (MacroAssembler::insts_for_set(n->get_ptr()) > 3)));
match(ConP);
op_cost(5);
@ -3579,7 +3579,7 @@ operand immP_load() %{
// Pointer Immediate: 64-bit
operand immP_no_oop_cheap() %{
predicate(VM_Version::is_niagara1_plus() && !n->bottom_type()->isa_oop_ptr() && (MacroAssembler::insts_for_set(n->get_ptr()) <= 3));
predicate(VM_Version::is_niagara_plus() && !n->bottom_type()->isa_oop_ptr() && (MacroAssembler::insts_for_set(n->get_ptr()) <= 3));
match(ConP);
op_cost(5);
@ -3686,7 +3686,7 @@ operand immL_32bits() %{
// Long Immediate: cheap (materialize in <= 3 instructions)
operand immL_cheap() %{
predicate(!VM_Version::is_niagara1_plus() || MacroAssembler::insts_for_set64(n->get_long()) <= 3);
predicate(!VM_Version::is_niagara_plus() || MacroAssembler::insts_for_set64(n->get_long()) <= 3);
match(ConL);
op_cost(0);
@ -3696,7 +3696,7 @@ operand immL_cheap() %{
// Long Immediate: expensive (materialize in > 3 instructions)
operand immL_expensive() %{
predicate(VM_Version::is_niagara1_plus() && MacroAssembler::insts_for_set64(n->get_long()) > 3);
predicate(VM_Version::is_niagara_plus() && MacroAssembler::insts_for_set64(n->get_long()) > 3);
match(ConL);
op_cost(0);

49
hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp
View file

@ -38,12 +38,6 @@
int VM_Version::_features = VM_Version::unknown_m;
const char* VM_Version::_features_str = "";
bool VM_Version::is_niagara1_plus() {
// This is a placeholder until the real test is determined.
return is_niagara1() &&
(os::processor_count() > maximum_niagara1_processor_count());
}
void VM_Version::initialize() {
_features = determine_features();
PrefetchCopyIntervalInBytes = prefetch_copy_interval_in_bytes();
@ -69,11 +63,21 @@ void VM_Version::initialize() {
_supports_cx8 = has_v9();
if (is_niagara1()) {
if (is_niagara()) {
// Indirect branch is the same cost as direct
if (FLAG_IS_DEFAULT(UseInlineCaches)) {
FLAG_SET_DEFAULT(UseInlineCaches, false);
}
// Align loops on a single instruction boundary.
if (FLAG_IS_DEFAULT(OptoLoopAlignment)) {
FLAG_SET_DEFAULT(OptoLoopAlignment, 4);
}
// When using CMS, we cannot use memset() in BOT updates because
// the sun4v/CMT version in libc_psr uses BIS which exposes
// "phantom zeros" to concurrent readers. See 6948537.
if (FLAG_IS_DEFAULT(UseMemSetInBOT) && UseConcMarkSweepGC) {
FLAG_SET_DEFAULT(UseMemSetInBOT, false);
}
#ifdef _LP64
// 32-bit oops don't make sense for the 64-bit VM on sparc
// since the 32-bit VM has the same registers and smaller objects.
@ -89,7 +93,7 @@ void VM_Version::initialize() {
if (FLAG_IS_DEFAULT(InteriorEntryAlignment)) {
FLAG_SET_DEFAULT(InteriorEntryAlignment, 4);
}
if (is_niagara1_plus()) {
if (is_niagara_plus()) {
if (has_blk_init() && AllocatePrefetchStyle > 0 &&
FLAG_IS_DEFAULT(AllocatePrefetchStyle)) {
// Use BIS instruction for allocation prefetch.
@ -105,15 +109,6 @@ void VM_Version::initialize() {
}
}
#endif
if (FLAG_IS_DEFAULT(OptoLoopAlignment)) {
FLAG_SET_DEFAULT(OptoLoopAlignment, 4);
}
// When using CMS, we cannot use memset() in BOT updates because
// the sun4v/CMT version in libc_psr uses BIS which exposes
// "phantom zeros" to concurrent readers. See 6948537.
if (FLAG_IS_DEFAULT(UseMemSetInBOT) && UseConcMarkSweepGC) {
FLAG_SET_DEFAULT(UseMemSetInBOT, false);
}
}
// Use hardware population count instruction if available.
@ -129,17 +124,18 @@ void VM_Version::initialize() {
#endif
char buf[512];
jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
jio_snprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
(has_v8() ? ", has_v8" : ""),
(has_v9() ? ", has_v9" : ""),
(has_hardware_popc() ? ", popc" : ""),
(has_vis1() ? ", has_vis1" : ""),
(has_vis2() ? ", has_vis2" : ""),
(has_vis3() ? ", has_vis3" : ""),
(has_blk_init() ? ", has_blk_init" : ""),
(is_ultra3() ? ", is_ultra3" : ""),
(is_sun4v() ? ", is_sun4v" : ""),
(is_niagara1() ? ", is_niagara1" : ""),
(is_niagara1_plus() ? ", is_niagara1_plus" : ""),
(is_niagara() ? ", is_niagara" : ""),
(is_niagara_plus() ? ", is_niagara_plus" : ""),
(is_sparc64() ? ", is_sparc64" : ""),
(!has_hardware_mul32() ? ", no-mul32" : ""),
(!has_hardware_div32() ? ", no-div32" : ""),
@ -190,17 +186,18 @@ int VM_Version::determine_features() {
warning("Cannot recognize SPARC version. Default to V9");
}
if (UseNiagaraInstrs) {
if (is_niagara1(features)) {
assert(is_T_family(features) == is_niagara(features), "Niagara should be T series");
if (UseNiagaraInstrs) { // Force code generation for Niagara
if (is_T_family(features)) {
// Happy to accomodate...
} else {
NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Niagara");)
features = niagara1_m;
features |= T_family_m;
}
} else {
if (is_niagara1(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) {
if (is_T_family(features) && !FLAG_IS_DEFAULT(UseNiagaraInstrs)) {
NOT_PRODUCT(if (PrintMiscellaneous && Verbose) tty->print_cr("Version is Forced-Not-Niagara");)
features &= ~niagara1_unique_m;
features &= ~(T_family_m | T1_model_m);
} else {
// Happy to accomodate...
}
@ -222,7 +219,7 @@ void VM_Version::revert() {
unsigned int VM_Version::calc_parallel_worker_threads() {
unsigned int result;
if (is_niagara1_plus()) {
if (is_niagara_plus()) {
result = nof_parallel_worker_threads(5, 16, 8);
} else {
result = nof_parallel_worker_threads(5, 8, 8);

36
hotspot/src/cpu/sparc/vm/vm_version_sparc.hpp
View file

@ -41,7 +41,12 @@ protected:
vis2_instructions = 7,
sun4v_instructions = 8,
blk_init_instructions = 9,
fmaf_instructions = 10
fmaf_instructions = 10,
fmau_instructions = 11,
vis3_instructions = 12,
sparc64_family = 13,
T_family = 14,
T1_model = 15
};
enum Feature_Flag_Set {
@ -59,6 +64,11 @@ protected:
sun4v_m = 1 << sun4v_instructions,
blk_init_instructions_m = 1 << blk_init_instructions,
fmaf_instructions_m = 1 << fmaf_instructions,
fmau_instructions_m = 1 << fmau_instructions,
vis3_instructions_m = 1 << vis3_instructions,
sparc64_family_m = 1 << sparc64_family,
T_family_m = 1 << T_family,
T1_model_m = 1 << T1_model,
generic_v8_m = v8_instructions_m | hardware_mul32_m | hardware_div32_m | hardware_fsmuld_m,
generic_v9_m = generic_v8_m | v9_instructions_m,
@ -76,8 +86,13 @@ protected:
static int determine_features();
static int platform_features(int features);
static bool is_niagara1(int features) { return (features & sun4v_m) != 0; }
static bool is_sparc64(int features) { return (features & fmaf_instructions_m) != 0; }
// Returns true if the platform is in the niagara line (T series)
static bool is_T_family(int features) { return (features & T_family_m) != 0; }
static bool is_niagara() { return is_T_family(_features); }
DEBUG_ONLY( static bool is_niagara(int features) { return (features & sun4v_m) != 0; } )
// Returns true if it is niagara1 (T1).
static bool is_T1_model(int features) { return is_T_family(features) && ((features & T1_model_m) != 0); }
static int maximum_niagara1_processor_count() { return 32; }
@ -94,6 +109,7 @@ public:
static bool has_hardware_popc() { return (_features & hardware_popc_m) != 0; }
static bool has_vis1() { return (_features & vis1_instructions_m) != 0; }
static bool has_vis2() { return (_features & vis2_instructions_m) != 0; }
static bool has_vis3() { return (_features & vis3_instructions_m) != 0; }
static bool has_blk_init() { return (_features & blk_init_instructions_m) != 0; }
static bool supports_compare_and_exchange()
@ -101,14 +117,14 @@ public:
static bool is_ultra3() { return (_features & ultra3_m) == ultra3_m; }
static bool is_sun4v() { return (_features & sun4v_m) != 0; }
static bool is_niagara1() { return is_niagara1(_features); }
// Returns true if the platform is in the niagara line and
// newer than the niagara1.
static bool is_niagara1_plus();
static bool is_sparc64() { return is_sparc64(_features); }
// Returns true if the platform is in the niagara line (T series)
// and newer than the niagara1.
static bool is_niagara_plus() { return is_T_family(_features) && !is_T1_model(_features); }
// Fujitsu SPARC64
static bool is_sparc64() { return (_features & sparc64_family_m) != 0; }
static bool has_fast_fxtof() { return has_v9() && !is_ultra3(); }
static bool has_fast_idiv() { return is_niagara1_plus() || is_sparc64(); }
static bool has_fast_fxtof() { return is_niagara() || is_sparc64() || has_v9() && !is_ultra3(); }
static bool has_fast_idiv() { return is_niagara_plus() || is_sparc64(); }
static const char* cpu_features() { return _features_str; }

2
hotspot/src/os/solaris/vm/os_solaris.cpp
View file

@ -3065,7 +3065,7 @@ char* os::attempt_reserve_memory_at(size_t bytes, char* requested_addr) {
if (addr == NULL) {
jio_snprintf(buf, sizeof(buf), ": %s", strerror(err));
}
warning("attempt_reserve_memory_at: couldn't reserve %d bytes at "
warning("attempt_reserve_memory_at: couldn't reserve " SIZE_FORMAT " bytes at "
PTR_FORMAT ": reserve_memory_helper returned " PTR_FORMAT
"%s", bytes, requested_addr, addr, buf);
}

73
hotspot/src/os_cpu/solaris_sparc/vm/vm_version_solaris_sparc.cpp
View file

@ -29,6 +29,7 @@
# include <sys/auxv.h>
# include <sys/auxv_SPARC.h>
# include <sys/systeminfo.h>
# include <kstat.h>
// We need to keep these here as long as we have to build on Solaris
// versions before 10.
@ -95,12 +96,24 @@ int VM_Version::platform_features(int features) {
// but Solaris 8 is used for jdk6 update builds.
#ifndef AV_SPARC_ASI_BLK_INIT
#define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
#endif
#ifndef AV_SPARC_FMAF
#define AV_SPARC_FMAF 0x0100 /* Sparc64 Fused Multiply-Add */
#endif
if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
#ifndef AV_SPARC_FMAF
#define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
#endif
if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
#ifndef AV_SPARC_FMAU
#define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
#endif
if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
#ifndef AV_SPARC_VIS3
#define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
#endif
if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
} else {
// getisax(2) failed, use the old legacy code.
#ifndef PRODUCT
@ -140,5 +153,59 @@ int VM_Version::platform_features(int features) {
// Determine the machine type.
do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
{
// Using kstat to determine the machine type.
kstat_ctl_t* kc = kstat_open();
kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
const char* implementation = "UNKNOWN";
if (ksp != NULL) {
if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
for (int i = 0; i < ksp->ks_ndata; i++) {
if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
#ifndef KSTAT_DATA_STRING
#define KSTAT_DATA_STRING 9
#endif
if (knm[i].data_type == KSTAT_DATA_CHAR) {
// VM is running on Solaris 8 which does not have value.str.
implementation = &(knm[i].value.c[0]);
} else if (knm[i].data_type == KSTAT_DATA_STRING) {
// VM is running on Solaris 10.
#ifndef KSTAT_NAMED_STR_PTR
// Solaris 8 was used to build VM, define the structure it misses.
struct str_t {
union {
char *ptr; /* NULL-term string */
char __pad[8]; /* 64-bit padding */
} addr;
uint32_t len; /* # bytes for strlen + '\0' */
};
#define KSTAT_NAMED_STR_PTR(knptr) (( (str_t*)&((knptr)->value) )->addr.ptr)
#endif
implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
}
#ifndef PRODUCT
if (PrintMiscellaneous && Verbose) {
tty->print_cr("cpu_info.implementation: %s", implementation);
}
#endif
if (strncmp(implementation, "SPARC64", 7) == 0) {
features |= sparc64_family_m;
} else if (strncmp(implementation, "UltraSPARC-T", 12) == 0) {
features |= T_family_m;
if (strncmp(implementation, "UltraSPARC-T1", 13) == 0) {
features |= T1_model_m;
}
}
break;
}
} // for(
}
}
assert(strcmp(implementation, "UNKNOWN") != 0,
"unknown cpu info (changed kstat interface?)");
kstat_close(kc);
}
return features;
}

11
hotspot/src/share/vm/memory/universe.cpp
View file

@ -934,7 +934,8 @@ jint Universe::initialize_heap() {
// See needs_explicit_null_check.
// Only set the heap base for compressed oops because it indicates
// compressed oops for pstack code.
if (PrintCompressedOopsMode) {
bool verbose = PrintCompressedOopsMode || (PrintMiscellaneous && Verbose);
if (verbose) {
tty->cr();
tty->print("heap address: " PTR_FORMAT ", size: " SIZE_FORMAT " MB",
Universe::heap()->base(), Universe::heap()->reserved_region().byte_size()/M);
@ -943,12 +944,12 @@ jint Universe::initialize_heap() {
// Can't reserve heap below 32Gb.
Universe::set_narrow_oop_base(Universe::heap()->base() - os::vm_page_size());
Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
if (PrintCompressedOopsMode) {
if (verbose) {
tty->print(", Compressed Oops with base: "PTR_FORMAT, Universe::narrow_oop_base());
}
} else {
Universe::set_narrow_oop_base(0);
if (PrintCompressedOopsMode) {
if (verbose) {
tty->print(", zero based Compressed Oops");
}
#ifdef _WIN64
@ -963,12 +964,12 @@ jint Universe::initialize_heap() {
Universe::set_narrow_oop_shift(LogMinObjAlignmentInBytes);
} else {
Universe::set_narrow_oop_shift(0);
if (PrintCompressedOopsMode) {
if (verbose) {
tty->print(", 32-bits Oops");
}
}
}
if (PrintCompressedOopsMode) {
if (verbose) {
tty->cr();
tty->cr();
}