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Differential D23718 Diff 70084 head/sys/arm/arm/pmap-v6.c

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head/sys/arm/arm/pmap-v6.c

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/***************************************************************************** /*****************************************************************************
* *
* PMAP third and final stage initialization. * PMAP third and final stage initialization.
* *
* After pmap_init() is called, PMAP subsystem is fully initialized. * After pmap_init() is called, PMAP subsystem is fully initialized.
* *
*****************************************************************************/ *****************************************************************************/
SYSCTL_NODE(_vm, OID_AUTO, pmap, CTLFLAG_RD, 0, "VM/pmap parameters"); SYSCTL_NODE(_vm, OID_AUTO, pmap, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"VM/pmap parameters");
SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_max, CTLFLAG_RD, &pv_entry_max, 0, SYSCTL_INT(_vm_pmap, OID_AUTO, pv_entry_max, CTLFLAG_RD, &pv_entry_max, 0,
"Max number of PV entries"); "Max number of PV entries");
SYSCTL_INT(_vm_pmap, OID_AUTO, shpgperproc, CTLFLAG_RD, &shpgperproc, 0, SYSCTL_INT(_vm_pmap, OID_AUTO, shpgperproc, CTLFLAG_RD, &shpgperproc, 0,
"Page share factor per proc"); "Page share factor per proc");
static u_long nkpt2pg = NKPT2PG; static u_long nkpt2pg = NKPT2PG;
SYSCTL_ULONG(_vm_pmap, OID_AUTO, nkpt2pg, CTLFLAG_RD, SYSCTL_ULONG(_vm_pmap, OID_AUTO, nkpt2pg, CTLFLAG_RD,
&nkpt2pg, 0, "Pre-allocated pages for kernel PT2s"); &nkpt2pg, 0, "Pre-allocated pages for kernel PT2s");
static int sp_enabled = 1; static int sp_enabled = 1;
SYSCTL_INT(_vm_pmap, OID_AUTO, sp_enabled, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, SYSCTL_INT(_vm_pmap, OID_AUTO, sp_enabled, CTLFLAG_RDTUN | CTLFLAG_NOFETCH,
&sp_enabled, 0, "Are large page mappings enabled?"); &sp_enabled, 0, "Are large page mappings enabled?");
bool bool
pmap_ps_enabled(pmap_t pmap __unused) pmap_ps_enabled(pmap_t pmap __unused)
{ {
return (sp_enabled != 0); return (sp_enabled != 0);
} }
static SYSCTL_NODE(_vm_pmap, OID_AUTO, pte1, CTLFLAG_RD, 0, static SYSCTL_NODE(_vm_pmap, OID_AUTO, pte1, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"1MB page mapping counters"); "1MB page mapping counters");
static u_long pmap_pte1_demotions; static u_long pmap_pte1_demotions;
SYSCTL_ULONG(_vm_pmap_pte1, OID_AUTO, demotions, CTLFLAG_RD, SYSCTL_ULONG(_vm_pmap_pte1, OID_AUTO, demotions, CTLFLAG_RD,
&pmap_pte1_demotions, 0, "1MB page demotions"); &pmap_pte1_demotions, 0, "1MB page demotions");
static u_long pmap_pte1_mappings; static u_long pmap_pte1_mappings;
SYSCTL_ULONG(_vm_pmap_pte1, OID_AUTO, mappings, CTLFLAG_RD, SYSCTL_ULONG(_vm_pmap_pte1, OID_AUTO, mappings, CTLFLAG_RD,
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static int static int
kvm_size(SYSCTL_HANDLER_ARGS) kvm_size(SYSCTL_HANDLER_ARGS)
{ {
unsigned long ksize = vm_max_kernel_address - KERNBASE; unsigned long ksize = vm_max_kernel_address - KERNBASE;
return (sysctl_handle_long(oidp, &ksize, 0, req)); return (sysctl_handle_long(oidp, &ksize, 0, req));
} }
SYSCTL_PROC(_vm, OID_AUTO, kvm_size, CTLTYPE_LONG|CTLFLAG_RD, SYSCTL_PROC(_vm, OID_AUTO, kvm_size,
0, 0, kvm_size, "IU", "Size of KVM"); CTLTYPE_LONG | CTLFLAG_RD | CTLFLAG_NEEDGIANT, 0, 0, kvm_size, "IU",
"Size of KVM");
static int static int
kvm_free(SYSCTL_HANDLER_ARGS) kvm_free(SYSCTL_HANDLER_ARGS)
{ {
unsigned long kfree = vm_max_kernel_address - kernel_vm_end; unsigned long kfree = vm_max_kernel_address - kernel_vm_end;
return (sysctl_handle_long(oidp, &kfree, 0, req)); return (sysctl_handle_long(oidp, &kfree, 0, req));
} }
SYSCTL_PROC(_vm, OID_AUTO, kvm_free, CTLTYPE_LONG|CTLFLAG_RD, SYSCTL_PROC(_vm, OID_AUTO, kvm_free,
0, 0, kvm_free, "IU", "Amount of KVM free"); CTLTYPE_LONG | CTLFLAG_RD | CTLFLAG_NEEDGIANT, 0, 0, kvm_free, "IU",
"Amount of KVM free");
/*********************************************** /***********************************************
* *
* Pmap allocation/deallocation routines. * Pmap allocation/deallocation routines.
* *
***********************************************/ ***********************************************/
/* /*
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