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Code Issues Releases Activity

Allow SMP && NCPU == 1 to work. From now on, there's no restriction on the

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value of NCPU relative to the number of cpus physically present, the actual
number of cpus utilized will be the smaller of the two.
This commit is contained in:
Luoqi Chen 2000-01-07 08:49:25 +00:00
parent 5e95083920
commit 5c8b298e0e
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=55540
8 changed files with 30 additions and 14 deletions
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6
sys/amd64/amd64/mp_machdep.c
View File

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

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

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

6
sys/amd64/include/mptable.h
View File

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

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

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

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

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

2
sys/i386/include/mpapic.h
View File

@ -98,6 +98,8 @@ all_procs_ipi(int vector)
static __inline int
all_but_self_ipi(int vector)
{
if (mp_ncpus <= 1)
return 0;
return apic_ipi(APIC_DEST_ALLESELF, vector, APIC_DELMODE_FIXED);
}

6
sys/i386/include/mptable.h
View File

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}

6
sys/kern/subr_smp.c
View File

@ -1155,7 +1155,7 @@ static int
processor_entry(proc_entry_ptr entry, int cpu)
{
/* check for usability */
if ((cpu >= NCPU) || !(entry->cpu_flags & PROCENTRY_FLAG_EN))
if (!(entry->cpu_flags & PROCENTRY_FLAG_EN))
return 0;
/* check for BSP flag */
@ -1167,11 +1167,13 @@ processor_entry(proc_entry_ptr entry, int cpu)
}
/* add another AP to list, if less than max number of CPUs */
else {
else if (cpu < NCPU) {
CPU_TO_ID(cpu) = entry->apic_id;
ID_TO_CPU(entry->apic_id) = cpu;
return 1;
}
return 0;
}