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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
synced 2026-10-31 22:34:33 +01:00
mm: vmalloc: support multiple nodes in vmallocinfo
Allocated areas are spread among nodes, it implies that the scanning has to be performed individually of each node in order to dump all existing VAs. Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Uladzislau Rezki (Sony) <[email protected]> Cc: Baoquan He <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Joel Fernandes (Google) <[email protected]> Cc: Kazuhito Hagio <[email protected]> Cc: Liam R. Howlett <[email protected]> Cc: Lorenzo Stoakes <[email protected]> Cc: Matthew Wilcox (Oracle) <[email protected]> Cc: Oleksiy Avramchenko <[email protected]> Cc: Paul E. McKenney <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
This commit is contained in:
Uladzislau Rezki (Sony) authored and Andrew Morton committed
1 parent
53becf32ae
commit
8e1d743f2c
1 file changed
+58
-84
+58
-84
@@ -4709,30 +4709,6 @@ bool vmalloc_dump_obj(void *object)
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#endif
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#ifdef CONFIG_PROC_FS
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static void *s_start(struct seq_file *m, loff_t *pos)
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{
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struct vmap_node *vn = addr_to_node(0);
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mutex_lock(&vmap_purge_lock);
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spin_lock(&vn->busy.lock);
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return seq_list_start(&vn->busy.head, *pos);
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}
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static void *s_next(struct seq_file *m, void *p, loff_t *pos)
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{
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struct vmap_node *vn = addr_to_node(0);
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return seq_list_next(p, &vn->busy.head, pos);
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}
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static void s_stop(struct seq_file *m, void *p)
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{
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struct vmap_node *vn = addr_to_node(0);
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spin_unlock(&vn->busy.lock);
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mutex_unlock(&vmap_purge_lock);
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}
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static void show_numa_info(struct seq_file *m, struct vm_struct *v)
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{
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if (IS_ENABLED(CONFIG_NUMA)) {
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@@ -4776,84 +4752,82 @@ static void show_purge_info(struct seq_file *m)
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}
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}
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static int s_show(struct seq_file *m, void *p)
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static int vmalloc_info_show(struct seq_file *m, void *p)
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{
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struct vmap_node *vn;
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struct vmap_area *va;
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struct vm_struct *v;
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int i;
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vn = addr_to_node(0);
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va = list_entry(p, struct vmap_area, list);
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for (i = 0; i < nr_vmap_nodes; i++) {
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vn = &vmap_nodes[i];
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if (!va->vm) {
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if (va->flags & VMAP_RAM)
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seq_printf(m, "0x%pK-0x%pK %7ld vm_map_ram\n",
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(void *)va->va_start, (void *)va->va_end,
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va->va_end - va->va_start);
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spin_lock(&vn->busy.lock);
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list_for_each_entry(va, &vn->busy.head, list) {
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if (!va->vm) {
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if (va->flags & VMAP_RAM)
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seq_printf(m, "0x%pK-0x%pK %7ld vm_map_ram\n",
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(void *)va->va_start, (void *)va->va_end,
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va->va_end - va->va_start);
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goto final;
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continue;
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}
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v = va->vm;
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seq_printf(m, "0x%pK-0x%pK %7ld",
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v->addr, v->addr + v->size, v->size);
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if (v->caller)
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seq_printf(m, " %pS", v->caller);
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if (v->nr_pages)
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seq_printf(m, " pages=%d", v->nr_pages);
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if (v->phys_addr)
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seq_printf(m, " phys=%pa", &v->phys_addr);
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if (v->flags & VM_IOREMAP)
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seq_puts(m, " ioremap");
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if (v->flags & VM_ALLOC)
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seq_puts(m, " vmalloc");
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if (v->flags & VM_MAP)
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seq_puts(m, " vmap");
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if (v->flags & VM_USERMAP)
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seq_puts(m, " user");
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if (v->flags & VM_DMA_COHERENT)
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seq_puts(m, " dma-coherent");
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if (is_vmalloc_addr(v->pages))
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seq_puts(m, " vpages");
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show_numa_info(m, v);
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seq_putc(m, '\n');
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}
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spin_unlock(&vn->busy.lock);
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}
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v = va->vm;
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seq_printf(m, "0x%pK-0x%pK %7ld",
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v->addr, v->addr + v->size, v->size);
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if (v->caller)
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seq_printf(m, " %pS", v->caller);
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if (v->nr_pages)
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seq_printf(m, " pages=%d", v->nr_pages);
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if (v->phys_addr)
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seq_printf(m, " phys=%pa", &v->phys_addr);
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if (v->flags & VM_IOREMAP)
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seq_puts(m, " ioremap");
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if (v->flags & VM_ALLOC)
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seq_puts(m, " vmalloc");
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if (v->flags & VM_MAP)
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seq_puts(m, " vmap");
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if (v->flags & VM_USERMAP)
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seq_puts(m, " user");
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if (v->flags & VM_DMA_COHERENT)
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seq_puts(m, " dma-coherent");
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if (is_vmalloc_addr(v->pages))
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seq_puts(m, " vpages");
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show_numa_info(m, v);
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seq_putc(m, '\n');
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/*
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* As a final step, dump "unpurged" areas.
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*/
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final:
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if (list_is_last(&va->list, &vn->busy.head))
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show_purge_info(m);
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show_purge_info(m);
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return 0;
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}
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static const struct seq_operations vmalloc_op = {
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.start = s_start,
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.next = s_next,
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.stop = s_stop,
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.show = s_show,
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};
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static int __init proc_vmalloc_init(void)
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{
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void *priv_data = NULL;
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if (IS_ENABLED(CONFIG_NUMA))
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proc_create_seq_private("vmallocinfo", 0400, NULL,
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&vmalloc_op,
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nr_node_ids * sizeof(unsigned int), NULL);
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else
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proc_create_seq("vmallocinfo", 0400, NULL, &vmalloc_op);
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priv_data = kmalloc(nr_node_ids * sizeof(unsigned int), GFP_KERNEL);
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proc_create_single_data("vmallocinfo",
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0400, NULL, vmalloc_info_show, priv_data);
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return 0;
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}
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module_init(proc_vmalloc_init);
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