svn commit: r239700 - in projects/bhyve: lib/libvmmapi sys/amd64/vmm
Peter Grehan
grehan at FreeBSD.org
Sun Aug 26 01:41:42 UTC 2012
Author: grehan
Date: Sun Aug 26 01:41:41 2012
New Revision: 239700
URL: http://svn.freebsd.org/changeset/base/239700
Log:
Add sysctls to display the total and free amount of hard-wired mem for VMs
# sysctl hw.vmm
hw.vmm.mem_free: 2145386496
hw.vmm.mem_total: 2145386496
Submitted by: Takeshi HASEGAWA hasegaw at gmail com
Modified:
projects/bhyve/lib/libvmmapi/vmmapi.c
projects/bhyve/lib/libvmmapi/vmmapi.h
projects/bhyve/sys/amd64/vmm/vmm_dev.c
projects/bhyve/sys/amd64/vmm/vmm_mem.c
projects/bhyve/sys/amd64/vmm/vmm_mem.h
Modified: projects/bhyve/lib/libvmmapi/vmmapi.c
==============================================================================
--- projects/bhyve/lib/libvmmapi/vmmapi.c Sun Aug 26 01:21:02 2012 (r239699)
+++ projects/bhyve/lib/libvmmapi/vmmapi.c Sun Aug 26 01:41:41 2012 (r239700)
@@ -117,6 +117,30 @@ vm_destroy(struct vmctx *vm)
free(vm);
}
+size_t
+vmm_get_mem_total(void)
+{
+ size_t mem_total = 0;
+ size_t oldlen = sizeof(mem_total);
+ int error;
+ error = sysctlbyname("hw.vmm.mem_total", &mem_total, &oldlen, NULL, 0);
+ if (error)
+ return -1;
+ return mem_total;
+}
+
+size_t
+vmm_get_mem_free(void)
+{
+ size_t mem_free = 0;
+ size_t oldlen = sizeof(mem_free);
+ int error;
+ error = sysctlbyname("hw.vmm.mem_free", &mem_free, &oldlen, NULL, 0);
+ if (error)
+ return -1;
+ return mem_free;
+}
+
int
vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa,
vm_paddr_t *ret_hpa, size_t *ret_len)
Modified: projects/bhyve/lib/libvmmapi/vmmapi.h
==============================================================================
--- projects/bhyve/lib/libvmmapi/vmmapi.h Sun Aug 26 01:21:02 2012 (r239699)
+++ projects/bhyve/lib/libvmmapi/vmmapi.h Sun Aug 26 01:41:41 2012 (r239700)
@@ -34,6 +34,8 @@ struct vmctx;
int vm_create(const char *name);
struct vmctx *vm_open(const char *name);
void vm_destroy(struct vmctx *ctx);
+size_t vmm_get_mem_total(void);
+size_t vmm_get_mem_free(void);
int vm_get_memory_seg(struct vmctx *ctx, vm_paddr_t gpa,
vm_paddr_t *ret_hpa, size_t *ret_len);
/*
Modified: projects/bhyve/sys/amd64/vmm/vmm_dev.c
==============================================================================
--- projects/bhyve/sys/amd64/vmm/vmm_dev.c Sun Aug 26 01:21:02 2012 (r239699)
+++ projects/bhyve/sys/amd64/vmm/vmm_dev.c Sun Aug 26 01:41:41 2012 (r239700)
@@ -51,6 +51,7 @@ __FBSDID("$FreeBSD$");
#include <machine/vmm.h>
#include "vmm_lapic.h"
#include "vmm_stat.h"
+#include "vmm_mem.h"
#include "io/ppt.h"
#include <machine/vmm_dev.h>
@@ -458,6 +459,24 @@ sysctl_vmm_create(SYSCTL_HANDLER_ARGS)
SYSCTL_PROC(_hw_vmm, OID_AUTO, create, CTLTYPE_STRING | CTLFLAG_RW,
NULL, 0, sysctl_vmm_create, "A", NULL);
+static int
+sysctl_vmm_mem_total(SYSCTL_HANDLER_ARGS)
+{
+ size_t val = vmm_mem_get_mem_total();
+ return sysctl_handle_long(oidp, &val, 0, req);
+}
+SYSCTL_PROC(_hw_vmm, OID_AUTO, mem_total, CTLTYPE_LONG | CTLFLAG_RD,
+ 0, 0, sysctl_vmm_mem_total, "LU", "Amount of Total memory");
+
+static int
+sysctl_vmm_mem_free(SYSCTL_HANDLER_ARGS)
+{
+ size_t val = vmm_mem_get_mem_free();
+ return sysctl_handle_long(oidp, &val, 0, req);
+}
+SYSCTL_PROC(_hw_vmm, OID_AUTO, mem_free, CTLTYPE_LONG | CTLFLAG_RD,
+ 0, 0, sysctl_vmm_mem_free, "LU", "Amount of Free memory");
+
void
vmmdev_init(void)
{
Modified: projects/bhyve/sys/amd64/vmm/vmm_mem.c
==============================================================================
--- projects/bhyve/sys/amd64/vmm/vmm_mem.c Sun Aug 26 01:21:02 2012 (r239699)
+++ projects/bhyve/sys/amd64/vmm/vmm_mem.c Sun Aug 26 01:41:41 2012 (r239700)
@@ -63,6 +63,7 @@ static struct {
} vmm_mem_avail[VMM_MEM_MAXSEGS];
static int vmm_mem_nsegs;
+size_t vmm_mem_total_bytes;
static vm_paddr_t maxaddr;
@@ -96,6 +97,7 @@ vmm_mem_steal_memory(void)
smapsize = *((uint32_t *)smapbase - 1);
smapend = (struct bios_smap *)((uintptr_t)smapbase + smapsize);
+ vmm_mem_total_bytes = 0;
nsegs = 0;
for (smap = smapbase; smap < smapend; smap++) {
/*
@@ -131,6 +133,7 @@ vmm_mem_steal_memory(void)
vmm_mem_avail[nsegs].base = base;
vmm_mem_avail[nsegs].length = length;
+ vmm_mem_total_bytes += length;
if (base + length > maxaddr)
maxaddr = base + length;
@@ -344,6 +347,27 @@ vmm_mem_alloc(size_t size)
return (addr);
}
+size_t
+vmm_mem_get_mem_total(void)
+{
+ return vmm_mem_total_bytes;
+}
+
+size_t
+vmm_mem_get_mem_free(void)
+{
+ size_t length = 0;
+ int i;
+
+ mtx_lock(&vmm_mem_mtx);
+ for (i = 0; i < vmm_mem_nsegs; i++) {
+ length += vmm_mem_avail[i].length;
+ }
+ mtx_unlock(&vmm_mem_mtx);
+
+ return(length);
+}
+
void
vmm_mem_free(vm_paddr_t base, size_t length)
{
Modified: projects/bhyve/sys/amd64/vmm/vmm_mem.h
==============================================================================
--- projects/bhyve/sys/amd64/vmm/vmm_mem.h Sun Aug 26 01:21:02 2012 (r239699)
+++ projects/bhyve/sys/amd64/vmm/vmm_mem.h Sun Aug 26 01:41:41 2012 (r239700)
@@ -35,4 +35,7 @@ void vmm_mem_free(vm_paddr_t start, siz
vm_paddr_t vmm_mem_maxaddr(void);
void vmm_mem_dump(void);
+size_t vmm_mem_get_mem_total(void);
+size_t vmm_mem_get_mem_free(void);
+
#endif
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