Author: sobomax
Date: Sun Apr 12 23:06:23 2009
New Revision: 190980
URL: http://svn.freebsd.org/changeset/base/190980
Log:
MFC: Make machdep.hyperthreading_allowed working.
Approved by: re (kib)
Modified:
stable/7/sys/ (props changed)
stable/7/sys/amd64/amd64/mp_machdep.c
stable/7/sys/contrib/pf/ (props changed)
stable/7/sys/dev/ath/ath_hal/ (props changed)
stable/7/sys/dev/cxgb/ (props changed)
stable/7/sys/i386/i386/mp_machdep.c
Modified: stable/7/sys/amd64/amd64/mp_machdep.c
==============================================================================
--- stable/7/sys/amd64/amd64/mp_machdep.c Sun Apr 12 22:16:14 2009
(r190979)
+++ stable/7/sys/amd64/amd64/mp_machdep.c Sun Apr 12 23:06:23 2009
(r190980)
@@ -153,6 +153,7 @@ struct cpu_info {
int cpu_present:1;
int cpu_bsp:1;
int cpu_disabled:1;
+ int cpu_hyperthread:1;
} static cpu_info[MAX_APIC_ID + 1];
int cpu_apic_ids[MAXCPU];
@@ -355,11 +356,6 @@ cpu_mp_start(void)
("BSP's APIC ID doesn't match boot_cpu_id"));
cpu_apic_ids[0] = boot_cpu_id;
- assign_cpu_ids();
-
- /* Start each Application Processor */
- start_all_aps();
-
/* Setup the initial logical CPUs info. */
logical_cpus = logical_cpus_mask = 0;
if (cpu_feature & CPUID_HTT)
@@ -407,6 +403,11 @@ cpu_mp_start(void)
hyperthreading_cpus = logical_cpus;
}
+ assign_cpu_ids();
+
+ /* Start each Application Processor */
+ start_all_aps();
+
set_interrupt_apic_ids();
/* Last, setup the cpu topology now that we have probed CPUs */
@@ -421,18 +422,26 @@ void
cpu_mp_announce(void)
{
int i, x;
+ const char *hyperthread;
/* List CPUs */
printf(" cpu0 (BSP): APIC ID: %2d\n", boot_cpu_id);
for (i = 1, x = 0; x <= MAX_APIC_ID; x++) {
if (!cpu_info[x].cpu_present || cpu_info[x].cpu_bsp)
continue;
+ if (cpu_info[x].cpu_hyperthread) {
+ hyperthread = "/HT";
+ } else {
+ hyperthread = "";
+ }
if (cpu_info[x].cpu_disabled)
- printf(" cpu (AP): APIC ID: %2d (disabled)\n", x);
+ printf(" cpu (AP%s): APIC ID: %2d (disabled)\n",
+ hyperthread, x);
else {
KASSERT(i < mp_ncpus,
("mp_ncpus and actual cpus are out of whack"));
- printf(" cpu%d (AP): APIC ID: %2d\n", i++, x);
+ printf(" cpu%d (AP%s): APIC ID: %2d\n", i++,
+ hyperthread, x);
}
}
}
@@ -638,11 +647,28 @@ assign_cpu_ids(void)
{
u_int i;
+ TUNABLE_INT_FETCH("machdep.hyperthreading_allowed",
+ &hyperthreading_allowed);
+
/* Check for explicitly disabled CPUs. */
for (i = 0; i <= MAX_APIC_ID; i++) {
if (!cpu_info[i].cpu_present || cpu_info[i].cpu_bsp)
continue;
+ if (hyperthreading_cpus > 1 && i % hyperthreading_cpus != 0) {
+ cpu_info[i].cpu_hyperthread = 1;
+#if defined(SCHED_ULE)
+ /*
+ * Don't use HT CPU if it has been disabled by a
+ * tunable.
+ */
+ if (hyperthreading_allowed == 0) {
+ cpu_info[i].cpu_disabled = 1;
+ continue;
+ }
+#endif
+ }
+
/* Don't use this CPU if it has been disabled by a tunable. */
if (resource_disabled("lapic", i)) {
cpu_info[i].cpu_disabled = 1;
@@ -1229,6 +1255,16 @@ sysctl_hyperthreading_allowed(SYSCTL_HAN
if (error || !req->newptr)
return (error);
+#ifdef SCHED_ULE
+ /*
+ * SCHED_ULE doesn't allow enabling/disabling HT cores at
+ * run-time.
+ */
+ if (allowed != hyperthreading_allowed)
+ return (ENOTSUP);
+ return (error);
+#endif
+
if (allowed)
hlt_cpus_mask &= ~hyperthreading_cpus_mask;
else
@@ -1273,8 +1309,6 @@ cpu_hlt_setup(void *dummy __unused)
* of hlt_logical_cpus.
*/
if (hyperthreading_cpus_mask) {
- TUNABLE_INT_FETCH("machdep.hyperthreading_allowed",
- &hyperthreading_allowed);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hyperthreading_allowed", CTLTYPE_INT|CTLFLAG_RW,
Modified: stable/7/sys/i386/i386/mp_machdep.c
==============================================================================
--- stable/7/sys/i386/i386/mp_machdep.c Sun Apr 12 22:16:14 2009
(r190979)
+++ stable/7/sys/i386/i386/mp_machdep.c Sun Apr 12 23:06:23 2009
(r190980)
@@ -209,6 +209,7 @@ struct cpu_info {
int cpu_present:1;
int cpu_bsp:1;
int cpu_disabled:1;
+ int cpu_hyperthread:1;
} static cpu_info[MAX_APIC_ID + 1];
int cpu_apic_ids[MAXCPU];
@@ -405,11 +406,6 @@ cpu_mp_start(void)
("BSP's APIC ID doesn't match boot_cpu_id"));
cpu_apic_ids[0] = boot_cpu_id;
- assign_cpu_ids();
-
- /* Start each Application Processor */
- start_all_aps();
-
/* Setup the initial logical CPUs info. */
logical_cpus = logical_cpus_mask = 0;
if (cpu_feature & CPUID_HTT)
@@ -457,6 +453,11 @@ cpu_mp_start(void)
hyperthreading_cpus = logical_cpus;
}
+ assign_cpu_ids();
+
+ /* Start each Application Processor */
+ start_all_aps();
+
set_interrupt_apic_ids();
/* Last, setup the cpu topology now that we have probed CPUs */
@@ -471,18 +472,26 @@ void
cpu_mp_announce(void)
{
int i, x;
+ const char *hyperthread;
/* List CPUs */
printf(" cpu0 (BSP): APIC ID: %2d\n", boot_cpu_id);
for (i = 1, x = 0; x <= MAX_APIC_ID; x++) {
if (!cpu_info[x].cpu_present || cpu_info[x].cpu_bsp)
continue;
+ if (cpu_info[x].cpu_hyperthread) {
+ hyperthread = "/HT";
+ } else {
+ hyperthread = "";
+ }
if (cpu_info[x].cpu_disabled)
- printf(" cpu (AP): APIC ID: %2d (disabled)\n", x);
+ printf(" cpu (AP%s): APIC ID: %2d (disabled)\n",
+ hyperthread, x);
else {
KASSERT(i < mp_ncpus,
("mp_ncpus and actual cpus are out of whack"));
- printf(" cpu%d (AP): APIC ID: %2d\n", i++, x);
+ printf(" cpu%d (AP%s): APIC ID: %2d\n", i++,
+ hyperthread, x);
}
}
}
@@ -691,11 +700,28 @@ assign_cpu_ids(void)
{
u_int i;
+ TUNABLE_INT_FETCH("machdep.hyperthreading_allowed",
+ &hyperthreading_allowed);
+
/* Check for explicitly disabled CPUs. */
for (i = 0; i <= MAX_APIC_ID; i++) {
if (!cpu_info[i].cpu_present || cpu_info[i].cpu_bsp)
continue;
+ if (hyperthreading_cpus > 1 && i % hyperthreading_cpus != 0) {
+ cpu_info[i].cpu_hyperthread = 1;
+#if defined(SCHED_ULE)
+ /*
+ * Don't use HT CPU if it has been disabled by a
+ * tunable.
+ */
+ if (hyperthreading_allowed == 0) {
+ cpu_info[i].cpu_disabled = 1;
+ continue;
+ }
+#endif
+ }
+
/* Don't use this CPU if it has been disabled by a tunable. */
if (resource_disabled("lapic", i)) {
cpu_info[i].cpu_disabled = 1;
@@ -1410,6 +1436,16 @@ sysctl_hyperthreading_allowed(SYSCTL_HAN
if (error || !req->newptr)
return (error);
+#ifdef SCHED_ULE
+ /*
+ * SCHED_ULE doesn't allow enabling/disabling HT cores at
+ * run-time.
+ */
+ if (allowed != hyperthreading_allowed)
+ return (ENOTSUP);
+ return (error);
+#endif
+
if (allowed)
hlt_cpus_mask &= ~hyperthreading_cpus_mask;
else
@@ -1454,8 +1490,6 @@ cpu_hlt_setup(void *dummy __unused)
* of hlt_logical_cpus.
*/
if (hyperthreading_cpus_mask) {
- TUNABLE_INT_FETCH("machdep.hyperthreading_allowed",
- &hyperthreading_allowed);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hyperthreading_allowed", CTLTYPE_INT|CTLFLAG_RW,
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