mirror of https://gitee.com/openkylin/linux.git
[PATCH] spufs: fix for CONFIG_NUMA
Based on an older patch from Mike Kravetz <kravetz@us.ibm.com> We need to have a mem_map for high addresses in order to make fops->no_page work on spufs mem and register files. So far, we have used the memory_present() function during early bootup, but that did not work when CONFIG_NUMA was enabled. We now use the __add_pages() function to add the mem_map when loading the spufs module, which is a lot nicer. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Joel H Schopp
Linus Torvalds
parent
46a66eecdf
commit
bed120c64e
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@ -12,7 +12,8 @@ config SPU_FS
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config SPUFS_MMAP
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bool
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depends on SPU_FS && SPARSEMEM && !PPC_64K_PAGES
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depends on SPU_FS && SPARSEMEM
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select MEMORY_HOTPLUG
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default y
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endmenu
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@ -29,6 +29,8 @@
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#include <linux/seq_file.h>
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#include <linux/root_dev.h>
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#include <linux/console.h>
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#include <linux/mutex.h>
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#include <linux/memory_hotplug.h>
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#include <asm/mmu.h>
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#include <asm/processor.h>
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@ -46,6 +48,7 @@
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#include <asm/cputable.h>
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#include <asm/ppc-pci.h>
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#include <asm/irq.h>
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#include <asm/spu.h>
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#include "interrupt.h"
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#include "iommu.h"
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@ -69,77 +72,6 @@ static void cell_show_cpuinfo(struct seq_file *m)
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of_node_put(root);
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}
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#ifdef CONFIG_SPARSEMEM
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static int __init find_spu_node_id(struct device_node *spe)
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{
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unsigned int *id;
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#ifdef CONFIG_NUMA
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struct device_node *cpu;
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cpu = spe->parent->parent;
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id = (unsigned int *)get_property(cpu, "node-id", NULL);
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#else
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id = NULL;
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#endif
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return id ? *id : 0;
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}
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static void __init cell_spuprop_present(struct device_node *spe,
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const char *prop, int early)
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{
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struct address_prop {
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unsigned long address;
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unsigned int len;
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} __attribute__((packed)) *p;
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int proplen;
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unsigned long start_pfn, end_pfn, pfn;
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int node_id;
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p = (void*)get_property(spe, prop, &proplen);
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WARN_ON(proplen != sizeof (*p));
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node_id = find_spu_node_id(spe);
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start_pfn = p->address >> PAGE_SHIFT;
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end_pfn = (p->address + p->len + PAGE_SIZE - 1) >> PAGE_SHIFT;
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/* We need to call memory_present *before* the call to sparse_init,
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but we can initialize the page structs only *after* that call.
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Thus, we're being called twice. */
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if (early)
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memory_present(node_id, start_pfn, end_pfn);
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else {
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/* As the pages backing SPU LS and I/O are outside the range
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of regular memory, their page structs were not initialized
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by free_area_init. Do it here instead. */
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for (pfn = start_pfn; pfn < end_pfn; pfn++) {
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struct page *page = pfn_to_page(pfn);
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set_page_links(page, ZONE_DMA, node_id, pfn);
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init_page_count(page);
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reset_page_mapcount(page);
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SetPageReserved(page);
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INIT_LIST_HEAD(&page->lru);
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}
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}
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}
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static void __init cell_spumem_init(int early)
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{
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struct device_node *node;
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for (node = of_find_node_by_type(NULL, "spe");
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node; node = of_find_node_by_type(node, "spe")) {
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cell_spuprop_present(node, "local-store", early);
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cell_spuprop_present(node, "problem", early);
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cell_spuprop_present(node, "priv1", early);
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cell_spuprop_present(node, "priv2", early);
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}
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}
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#else
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static void __init cell_spumem_init(int early)
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{
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}
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#endif
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static void cell_progress(char *s, unsigned short hex)
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{
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printk("*** %04x : %s\n", hex, s ? s : "");
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@ -172,8 +104,6 @@ static void __init cell_setup_arch(void)
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#endif
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mmio_nvram_init();
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cell_spumem_init(0);
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}
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/*
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@ -189,8 +119,6 @@ static void __init cell_init_early(void)
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ppc64_interrupt_controller = IC_CELL_PIC;
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cell_spumem_init(1);
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DBG(" <- cell_init_early()\n");
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}
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@ -520,6 +520,56 @@ void spu_irq_setaffinity(struct spu *spu, int cpu)
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}
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EXPORT_SYMBOL_GPL(spu_irq_setaffinity);
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static int __init find_spu_node_id(struct device_node *spe)
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{
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unsigned int *id;
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struct device_node *cpu;
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cpu = spe->parent->parent;
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id = (unsigned int *)get_property(cpu, "node-id", NULL);
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return id ? *id : 0;
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}
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static int __init cell_spuprop_present(struct device_node *spe,
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const char *prop)
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{
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static DEFINE_MUTEX(add_spumem_mutex);
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struct address_prop {
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unsigned long address;
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unsigned int len;
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} __attribute__((packed)) *p;
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int proplen;
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unsigned long start_pfn, nr_pages;
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int node_id;
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struct pglist_data *pgdata;
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struct zone *zone;
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int ret;
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p = (void*)get_property(spe, prop, &proplen);
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WARN_ON(proplen != sizeof (*p));
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start_pfn = p->address >> PAGE_SHIFT;
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nr_pages = ((unsigned long)p->len + PAGE_SIZE - 1) >> PAGE_SHIFT;
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/*
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* XXX need to get the correct NUMA node in here. This may
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* be different from the spe::node_id property, e.g. when
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* the host firmware is not NUMA aware.
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*/
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node_id = 0;
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pgdata = NODE_DATA(node_id);
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zone = pgdata->node_zones;
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/* XXX rethink locking here */
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mutex_lock(&add_spumem_mutex);
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ret = __add_pages(zone, start_pfn, nr_pages);
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mutex_unlock(&add_spumem_mutex);
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return ret;
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}
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static void __iomem * __init map_spe_prop(struct device_node *n,
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const char *name)
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{
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@ -530,6 +580,8 @@ static void __iomem * __init map_spe_prop(struct device_node *n,
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void *p;
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int proplen;
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void* ret = NULL;
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int err = 0;
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p = get_property(n, name, &proplen);
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if (proplen != sizeof (struct address_prop))
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@ -537,7 +589,14 @@ static void __iomem * __init map_spe_prop(struct device_node *n,
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prop = p;
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return ioremap(prop->address, prop->len);
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err = cell_spuprop_present(n, name);
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if (err && (err != -EEXIST))
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goto out;
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ret = ioremap(prop->address, prop->len);
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out:
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return ret;
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}
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static void spu_unmap(struct spu *spu)
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@ -597,17 +656,6 @@ static int __init spu_map_device(struct spu *spu, struct device_node *spe)
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return ret;
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}
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static int __init find_spu_node_id(struct device_node *spe)
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{
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unsigned int *id;
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struct device_node *cpu;
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cpu = spe->parent->parent;
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id = (unsigned int *)get_property(cpu, "node-id", NULL);
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return id ? *id : 0;
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}
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static int __init create_spu(struct device_node *spe)
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{
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struct spu *spu;
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@ -69,12 +69,16 @@ int __add_pages(struct zone *zone, unsigned long phys_start_pfn,
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for (i = 0; i < nr_pages; i += PAGES_PER_SECTION) {
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err = __add_section(zone, phys_start_pfn + i);
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if (err)
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/* We want to keep adding the rest of the
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* sections if the first ones already exist
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*/
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if (err && (err != -EEXIST))
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break;
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}
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return err;
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}
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EXPORT_SYMBOL_GPL(__add_pages);
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static void grow_zone_span(struct zone *zone,
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unsigned long start_pfn, unsigned long end_pfn)
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