Replace bootmem allocator with memblock and enable use of NO_BOOTMEM like
on most other architectures.
The conversion does not take care of NUMA support which is marked broken
for more than 10 years now.
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxxxxxxx>
---
Tested with qemu-system-alpha. I've added some tweaks to sys_dp264 to force
memory split for testing with CONFIG_DISCONTIGMEM=y
arch/alpha/Kconfig | 2 +
arch/alpha/kernel/core_irongate.c | 4 +-
arch/alpha/kernel/setup.c | 98 ++++-----------------------------
arch/alpha/mm/numa.c | 113 +++++---------------------------------
4 files changed, 29 insertions(+), 188 deletions(-)
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 04a4a138ed13..040692a8d433 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -30,6 +30,8 @@ config ALPHA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
+ select HAVE_MEMBLOCK
+ select NO_BOOTMEM
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/kernel/core_irongate.c b/arch/alpha/kernel/core_irongate.c
index aec757250e07..f70986683fc6 100644
--- a/arch/alpha/kernel/core_irongate.c
+++ b/arch/alpha/kernel/core_irongate.c
@@ -21,6 +21,7 @@
#include <linux/init.h>
#include <linux/initrd.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <asm/ptrace.h>
#include <asm/cacheflush.h>
@@ -241,8 +242,7 @@ albacore_init_arch(void)
size / 1024);
}
#endif
- reserve_bootmem_node(NODE_DATA(0), pci_mem, memtop -
- pci_mem, BOOTMEM_DEFAULT);
+ memblock_reserve(pci_mem, memtop - pci_mem);
printk("irongate_init_arch: temporarily reserving "
"region %08lx-%08lx for PCI\n", pci_mem, memtop - 1);
}
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 5576f7646fb6..4f0d94471bc9 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -30,6 +30,7 @@
#include <linux/ioport.h>
#include <linux/platform_device.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/pci.h>
#include <linux/seq_file.h>
#include <linux/root_dev.h>
@@ -312,9 +313,7 @@ setup_memory(void *kernel_end)
{
struct memclust_struct * cluster;
struct memdesc_struct * memdesc;
- unsigned long start_kernel_pfn, end_kernel_pfn;
- unsigned long bootmap_size, bootmap_pages, bootmap_start;
- unsigned long start, end;
+ unsigned long kernel_size;
unsigned long i;
/* Find free clusters, and init and free the bootmem accordingly. */
@@ -322,6 +321,8 @@ setup_memory(void *kernel_end)
(hwrpb->mddt_offset + (unsigned long) hwrpb);
for_each_mem_cluster(memdesc, cluster, i) {
+ unsigned long end;
+
printk("memcluster %lu, usage %01lx, start %8lu, end %8lu\n",
i, cluster->usage, cluster->start_pfn,
cluster->start_pfn + cluster->numpages);
@@ -335,6 +336,9 @@ setup_memory(void *kernel_end)
end = cluster->start_pfn + cluster->numpages;
if (end > max_low_pfn)
max_low_pfn = end;
+
+ memblock_add(PFN_PHYS(cluster->start_pfn),
+ cluster->numpages << PAGE_SHIFT);
}
/*
@@ -363,87 +367,9 @@ setup_memory(void *kernel_end)
max_low_pfn = mem_size_limit;
}
- /* Find the bounds of kernel memory. */
- start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
- end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
- bootmap_start = -1;
-
- try_again:
- if (max_low_pfn <= end_kernel_pfn)
- panic("not enough memory to boot");
-
- /* We need to know how many physically contiguous pages
- we'll need for the bootmap. */
- bootmap_pages = bootmem_bootmap_pages(max_low_pfn);
-
- /* Now find a good region where to allocate the bootmap. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
-
- start = cluster->start_pfn;
- end = start + cluster->numpages;
- if (start >= max_low_pfn)
- continue;
- if (end > max_low_pfn)
- end = max_low_pfn;
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn
- && end - end_kernel_pfn >= bootmap_pages) {
- bootmap_start = end_kernel_pfn;
- break;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (end - start >= bootmap_pages) {
- bootmap_start = start;
- break;
- }
- }
-
- if (bootmap_start == ~0UL) {
- max_low_pfn >>= 1;
- goto try_again;
- }
-
- /* Allocate the bootmap and mark the whole MM as reserved. */
- bootmap_size = init_bootmem(bootmap_start, max_low_pfn);
-
- /* Mark the free regions. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
-
- start = cluster->start_pfn;
- end = cluster->start_pfn + cluster->numpages;
- if (start >= max_low_pfn)
- continue;
- if (end > max_low_pfn)
- end = max_low_pfn;
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn) {
- free_bootmem(PFN_PHYS(start),
- (PFN_PHYS(start_kernel_pfn)
- - PFN_PHYS(start)));
- printk("freeing pages %ld:%ld\n",
- start, start_kernel_pfn);
- start = end_kernel_pfn;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (start >= end)
- continue;
-
- free_bootmem(PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
- printk("freeing pages %ld:%ld\n", start, end);
- }
-
- /* Reserve the bootmap memory. */
- reserve_bootmem(PFN_PHYS(bootmap_start), bootmap_size,
- BOOTMEM_DEFAULT);
- printk("reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
+ /* Reserve the kernel memory. */
+ kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
+ memblock_reserve(KERNEL_START_PHYS, kernel_size);
#ifdef CONFIG_BLK_DEV_INITRD
initrd_start = INITRD_START;
@@ -459,8 +385,8 @@ setup_memory(void *kernel_end)
initrd_end,
phys_to_virt(PFN_PHYS(max_low_pfn)));
} else {
- reserve_bootmem(virt_to_phys((void *)initrd_start),
- INITRD_SIZE, BOOTMEM_DEFAULT);
+ memblock_reserve(virt_to_phys((void *)initrd_start),
+ INITRD_SIZE);
}
}
#endif /* CONFIG_BLK_DEV_INITRD */
diff --git a/arch/alpha/mm/numa.c b/arch/alpha/mm/numa.c
index a9e86475f169..26cd925d19b1 100644
--- a/arch/alpha/mm/numa.c
+++ b/arch/alpha/mm/numa.c
@@ -11,6 +11,7 @@
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/bootmem.h>
+#include <linux/memblock.h>
#include <linux/swap.h>
#include <linux/initrd.h>
#include <linux/pfn.h>
@@ -59,12 +60,10 @@ setup_memory_node(int nid, void *kernel_end)
struct memclust_struct * cluster;
struct memdesc_struct * memdesc;
unsigned long start_kernel_pfn, end_kernel_pfn;
- unsigned long bootmap_size, bootmap_pages, bootmap_start;
unsigned long start, end;
unsigned long node_pfn_start, node_pfn_end;
unsigned long node_min_pfn, node_max_pfn;
int i;
- unsigned long node_datasz = PFN_UP(sizeof(pg_data_t));
int show_init = 0;
/* Find the bounds of current node */
@@ -134,24 +133,14 @@ setup_memory_node(int nid, void *kernel_end)
/* Cute trick to make sure our local node data is on local memory */
node_data[nid] = (pg_data_t *)(__va(node_min_pfn << PAGE_SHIFT));
#endif
- /* Quasi-mark the pg_data_t as in-use */
- node_min_pfn += node_datasz;
- if (node_min_pfn >= node_max_pfn) {
- printk(" not enough mem to reserve NODE_DATA");
- return;
- }
- NODE_DATA(nid)->bdata = &bootmem_node_data[nid];
-
printk(" Detected node memory: start %8lu, end %8lu\n",
node_min_pfn, node_max_pfn);
DBGDCONT(" DISCONTIG: node_data[%d] is at 0x%p\n", nid, NODE_DATA(nid));
- DBGDCONT(" DISCONTIG: NODE_DATA(%d)->bdata is at 0x%p\n", nid, NODE_DATA(nid)->bdata);
/* Find the bounds of kernel memory. */
start_kernel_pfn = PFN_DOWN(KERNEL_START_PHYS);
end_kernel_pfn = PFN_UP(virt_to_phys(kernel_end));
- bootmap_start = -1;
if (!nid && (node_max_pfn < end_kernel_pfn || node_min_pfn > start_kernel_pfn))
panic("kernel loaded out of ram");
@@ -161,89 +150,11 @@ setup_memory_node(int nid, void *kernel_end)
has much larger alignment than 8Mb, so it's safe. */
node_min_pfn &= ~((1UL << (MAX_ORDER-1))-1);
- /* We need to know how many physically contiguous pages
- we'll need for the bootmap. */
- bootmap_pages = bootmem_bootmap_pages(node_max_pfn-node_min_pfn);
-
- /* Now find a good region where to allocate the bootmap. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
-
- start = cluster->start_pfn;
- end = start + cluster->numpages;
-
- if (start >= node_max_pfn || end <= node_min_pfn)
- continue;
-
- if (end > node_max_pfn)
- end = node_max_pfn;
- if (start < node_min_pfn)
- start = node_min_pfn;
-
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn
- && end - end_kernel_pfn >= bootmap_pages) {
- bootmap_start = end_kernel_pfn;
- break;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (end - start >= bootmap_pages) {
- bootmap_start = start;
- break;
- }
- }
-
- if (bootmap_start == -1)
- panic("couldn't find a contiguous place for the bootmap");
-
- /* Allocate the bootmap and mark the whole MM as reserved. */
- bootmap_size = init_bootmem_node(NODE_DATA(nid), bootmap_start,
- node_min_pfn, node_max_pfn);
- DBGDCONT(" bootmap_start %lu, bootmap_size %lu, bootmap_pages %lu\n",
- bootmap_start, bootmap_size, bootmap_pages);
+ memblock_add(PFN_PHYS(node_min_pfn),
+ (node_max_pfn - node_min_pfn) << PAGE_SHIFT);
- /* Mark the free regions. */
- for_each_mem_cluster(memdesc, cluster, i) {
- if (cluster->usage & 3)
- continue;
-
- start = cluster->start_pfn;
- end = cluster->start_pfn + cluster->numpages;
-
- if (start >= node_max_pfn || end <= node_min_pfn)
- continue;
-
- if (end > node_max_pfn)
- end = node_max_pfn;
- if (start < node_min_pfn)
- start = node_min_pfn;
-
- if (start < start_kernel_pfn) {
- if (end > end_kernel_pfn) {
- free_bootmem_node(NODE_DATA(nid), PFN_PHYS(start),
- (PFN_PHYS(start_kernel_pfn)
- - PFN_PHYS(start)));
- printk(" freeing pages %ld:%ld\n",
- start, start_kernel_pfn);
- start = end_kernel_pfn;
- } else if (end > start_kernel_pfn)
- end = start_kernel_pfn;
- } else if (start < end_kernel_pfn)
- start = end_kernel_pfn;
- if (start >= end)
- continue;
-
- free_bootmem_node(NODE_DATA(nid), PFN_PHYS(start), PFN_PHYS(end) - PFN_PHYS(start));
- printk(" freeing pages %ld:%ld\n", start, end);
- }
-
- /* Reserve the bootmap memory. */
- reserve_bootmem_node(NODE_DATA(nid), PFN_PHYS(bootmap_start),
- bootmap_size, BOOTMEM_DEFAULT);
- printk(" reserving pages %ld:%ld\n", bootmap_start, bootmap_start+PFN_UP(bootmap_size));
+ NODE_DATA(nid)->node_start_pfn = node_min_pfn;
+ NODE_DATA(nid)->node_present_pages = node_max_pfn - node_min_pfn;
node_set_online(nid);
}
@@ -251,6 +162,7 @@ setup_memory_node(int nid, void *kernel_end)
void __init
setup_memory(void *kernel_end)
{
+ unsigned long kernel_size;
int nid;
show_mem_layout();
@@ -262,6 +174,9 @@ setup_memory(void *kernel_end)
for (nid = 0; nid < MAX_NUMNODES; nid++)
setup_memory_node(nid, kernel_end);
+ kernel_size = virt_to_phys(kernel_end) - KERNEL_START_PHYS;
+ memblock_reserve(KERNEL_START_PHYS, kernel_size);
+
#ifdef CONFIG_BLK_DEV_INITRD
initrd_start = INITRD_START;
if (initrd_start) {
@@ -279,9 +194,8 @@ setup_memory(void *kernel_end)
phys_to_virt(PFN_PHYS(max_low_pfn)));
} else {
nid = kvaddr_to_nid(initrd_start);
- reserve_bootmem_node(NODE_DATA(nid),
- virt_to_phys((void *)initrd_start),
- INITRD_SIZE, BOOTMEM_DEFAULT);
+ memblock_reserve(virt_to_phys((void *)initrd_start),
+ INITRD_SIZE);
}
}
#endif /* CONFIG_BLK_DEV_INITRD */
@@ -303,9 +217,8 @@ void __init paging_init(void)
dma_local_pfn = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
for_each_online_node(nid) {
- bootmem_data_t *bdata = &bootmem_node_data[nid];
- unsigned long start_pfn = bdata->node_min_pfn;
- unsigned long end_pfn = bdata->node_low_pfn;
+ unsigned long start_pfn = NODE_DATA(nid)->node_start_pfn;
+ unsigned long end_pfn = start_pfn + NODE_DATA(nid)->node_present_pages;
if (dma_local_pfn >= end_pfn - start_pfn)
zones_size[ZONE_DMA] = end_pfn - start_pfn;
--
2.7.4
