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Nuke options HTT infavor of machdep.hlt_logical_cpus tunable/sysctl.

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This keeps the logical cpu's halted in the idle loop.  By default
the logical cpu's are halted at startup.  It is also possible to
halt any cpu in the idle loop now using machdep.hlt_cpus.

Examples of how to use this:
machdep.hlt_cpus=1	halt cpu0
machdep.hlt_cpus=2	halt cpu1
machdep.hlt_cpus=4	halt cpu2
machdep.hlt_cpus=3	halt cpu0,cpu1

Reviewed by:	jhb, peter
This commit is contained in:
Paul Saab 2003-03-26 19:49:34 +00:00
parent bb9cca1c2f
commit 87437b0b89
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112687
14 changed files with 542 additions and 133 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
sys/amd64/amd64/machdep.c
View File

@ -1025,6 +1025,12 @@ SYSCTL_INT(_machdep, OID_AUTO, cpu_idle_hlt, CTLFLAG_RW,
void
cpu_idle(void)
{
#ifdef SMP
if (mp_grab_cpu_hlt())
return;
#endif
if (cpu_idle_hlt) {
disable_intr();
if (sched_runnable()) {

109
sys/amd64/amd64/mp_machdep.c
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

109
sys/amd64/amd64/mptable.c
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

109
sys/amd64/include/mptable.h
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

1
sys/amd64/include/smp.h
View File

@ -108,6 +108,7 @@ int apic_src_bus_irq(int, int);
int apic_int_type(int, int);
int apic_trigger(int, int);
int apic_polarity(int, int);
int mp_grab_cpu_hlt(void);
void assign_apic_irq(int apic, int intpin, int irq);
void revoke_apic_irq(int irq);
void bsp_apic_configure(void);

1
sys/conf/options.i386
View File

@ -29,7 +29,6 @@ PECOFF_SUPPORT opt_dontuse.h
PECOFF_DEBUG opt_pecoff.h
# i386 SMP options
APIC_IO opt_global.h
HTT
# Change KVM size. Changes things all over the kernel.
KVA_PAGES opt_global.h

1
sys/conf/options.pc98
View File

@ -29,7 +29,6 @@ PECOFF_SUPPORT opt_dontuse.h
PECOFF_DEBUG opt_pecoff.h
# i386 SMP options
APIC_IO opt_global.h
HTT
# Change KVM size. Changes things all over the kernel.
KVA_PAGES opt_global.h

2
sys/i386/conf/NOTES
View File

@ -37,8 +37,6 @@ profile 2
# Mandatory:
options APIC_IO # Symmetric (APIC) I/O
options HTT # HyperThreading Technology
#
# Rogue SMP hardware:
#

3
sys/i386/conf/SMP
View File

@ -10,6 +10,3 @@ ident SMP-GENERIC
# To make an SMP kernel, the next two are needed
options SMP # Symmetric MultiProcessor Kernel
options APIC_IO # Symmetric (APIC) I/O
# To support HyperThreading, HTT is needed in addition to SMP and APIC_IO
options HTT # HyperThreading Technology

6
sys/i386/i386/machdep.c
View File

@ -1025,6 +1025,12 @@ SYSCTL_INT(_machdep, OID_AUTO, cpu_idle_hlt, CTLFLAG_RW,
void
cpu_idle(void)
{
#ifdef SMP
if (mp_grab_cpu_hlt())
return;
#endif
if (cpu_idle_hlt) {
disable_intr();
if (sched_runnable()) {

109
sys/i386/i386/mp_machdep.c
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

109
sys/i386/i386/mptable.c
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

109
sys/i386/include/mptable.h
View File

@ -26,7 +26,6 @@
*/
#include "opt_cpu.h"
#include "opt_htt.h"
#include "opt_kstack_pages.h"
#ifdef SMP
@ -238,10 +237,9 @@ typedef struct BASETABLE_ENTRY {
#define MP_ANNOUNCE_POST 0x19
#ifdef HTT
static int need_hyperthreading_fixup;
static u_int logical_cpus;
#endif
static u_int logical_cpus_mask;
/* used to hold the AP's until we are ready to release them */
static struct mtx ap_boot_mtx;
@ -318,9 +316,7 @@ static mpfps_t mpfps;
static int search_for_sig(u_int32_t target, int count);
static void mp_enable(u_int boot_addr);
#ifdef HTT
static void mptable_hyperthread_fixup(u_int id_mask);
#endif
static void mptable_pass1(void);
static int mptable_pass2(void);
static void default_mp_table(int type);
@ -791,9 +787,7 @@ mptable_pass1(void)
void* position;
int count;
int type;
#ifdef HTT
u_int id_mask;
#endif
POSTCODE(MPTABLE_PASS1_POST);
@ -807,9 +801,7 @@ mptable_pass1(void)
mp_nbusses = 0;
mp_napics = 0;
nintrs = 0;
#ifdef HTT
id_mask = 0;
#endif
/* check for use of 'default' configuration */
if (MPFPS_MPFB1 != 0) {
@ -844,10 +836,8 @@ mptable_pass1(void)
& PROCENTRY_FLAG_EN) {
++mp_naps;
mp_maxid++;
#ifdef HTT
id_mask |= 1 <<
((proc_entry_ptr)position)->apic_id;
#endif
}
break;
case 1: /* bus_entry */
@ -882,10 +872,8 @@ mptable_pass1(void)
mp_naps = MAXCPU;
}
#ifdef HTT
/* See if we need to fixup HT logical CPUs. */
mptable_hyperthread_fixup(id_mask);
#endif
/*
* Count the BSP.
@ -911,9 +899,7 @@ mptable_pass1(void)
static int
mptable_pass2(void)
{
#ifdef HTT
struct PROCENTRY proc;
#endif
int x;
mpcth_t cth;
int totalSize;
@ -926,12 +912,10 @@ mptable_pass2(void)
POSTCODE(MPTABLE_PASS2_POST);
#ifdef HTT
/* Initialize fake proc entry for use with HT fixup. */
bzero(&proc, sizeof(proc));
proc.type = 0;
proc.cpu_flags = PROCENTRY_FLAG_EN;
#endif
pgeflag = 0; /* XXX - Not used under SMP yet. */
@ -1011,7 +995,6 @@ mptable_pass2(void)
if (processor_entry(position, cpu))
++cpu;
#ifdef HTT
if (need_hyperthreading_fixup) {
/*
* Create fake mptable processor entries
@ -1022,10 +1005,10 @@ mptable_pass2(void)
for (i = 1; i < logical_cpus; i++) {
proc.apic_id++;
(void)processor_entry(&proc, cpu);
logical_cpus_mask |= (1 << cpu);
cpu++;
}
}
#endif
break;
case 1:
if (bus_entry(position, bus))
@ -1058,7 +1041,6 @@ mptable_pass2(void)
return 0;
}
#ifdef HTT
/*
* Check if we should perform a hyperthreading "fix-up" to
* enumerate any logical CPU's that aren't already listed
@ -1108,7 +1090,6 @@ mptable_hyperthread_fixup(u_int id_mask)
mp_maxid *= logical_cpus;
mp_naps *= logical_cpus;
}
#endif
void
assign_apic_irq(int apic, int intpin, int irq)
@ -2760,3 +2741,89 @@ release_aps(void *dummy __unused)
}
SYSINIT(start_aps, SI_SUB_SMP, SI_ORDER_FIRST, release_aps, NULL);
static int hlt_cpus_mask;
static int hlt_logical_cpus = 1;
static struct sysctl_ctx_list logical_cpu_clist;
static int
sysctl_hlt_cpus(SYSCTL_HANDLER_ARGS)
{
u_int mask;
int error;
mask = hlt_cpus_mask;
error = sysctl_handle_int(oidp, &mask, 0, req);
if (error || !req->newptr)
return (error);
if (logical_cpus_mask != 0 &&
(mask & logical_cpus_mask) == logical_cpus_mask)
hlt_logical_cpus = 1;
else
hlt_logical_cpus = 0;
if ((mask & all_cpus) == all_cpus)
mask &= ~(1<<0);
hlt_cpus_mask = mask;
return (error);
}
SYSCTL_PROC(_machdep, OID_AUTO, hlt_cpus, CTLTYPE_INT|CTLFLAG_RW,
0, 0, sysctl_hlt_cpus, "IU", "");
static int
sysctl_hlt_logical_cpus(SYSCTL_HANDLER_ARGS)
{
int disable, error;
disable = hlt_logical_cpus;
error = sysctl_handle_int(oidp, &disable, 0, req);
if (error || !req->newptr)
return (error);
if (disable)
hlt_cpus_mask |= logical_cpus_mask;
else
hlt_cpus_mask &= ~logical_cpus_mask;
if ((hlt_cpus_mask & all_cpus) == all_cpus)
hlt_cpus_mask &= ~(1<<0);
hlt_logical_cpus = disable;
return (error);
}
static void
cpu_hlt_setup(void *dummy __unused)
{
if (logical_cpus_mask != 0) {
TUNABLE_INT_FETCH("machdep.hlt_logical_cpus",
&hlt_logical_cpus);
sysctl_ctx_init(&logical_cpu_clist);
SYSCTL_ADD_PROC(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"hlt_logical_cpus", CTLTYPE_INT|CTLFLAG_RW, 0, 0,
sysctl_hlt_logical_cpus, "IU", "");
SYSCTL_ADD_UINT(&logical_cpu_clist,
SYSCTL_STATIC_CHILDREN(_machdep), OID_AUTO,
"logical_cpus_mask", CTLTYPE_INT|CTLFLAG_RD,
&logical_cpus_mask, 0, "");
if (hlt_logical_cpus)
hlt_cpus_mask |= logical_cpus_mask;
}
}
SYSINIT(cpu_hlt, SI_SUB_SMP, SI_ORDER_ANY, cpu_hlt_setup, NULL);
int
mp_grab_cpu_hlt(void)
{
u_int mask = PCPU_GET(cpumask);
int retval;
retval = mask & hlt_cpus_mask;
while (mask & hlt_cpus_mask)
__asm __volatile("sti; hlt" : : : "memory");
return (retval);
}

1
sys/i386/include/smp.h
View File

@ -108,6 +108,7 @@ int apic_src_bus_irq(int, int);
int apic_int_type(int, int);
int apic_trigger(int, int);
int apic_polarity(int, int);
int mp_grab_cpu_hlt(void);
void assign_apic_irq(int apic, int intpin, int irq);
void revoke_apic_irq(int irq);
void bsp_apic_configure(void);