The patch titled
vmalloc: show vmalloced areas via /proc/vmallocinfo
has been added to the -mm tree. Its filename is
vmalloc-show-vmalloced-areas-via-proc-vmallocinfo.patch
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The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
Subject: vmalloc: show vmalloced areas via /proc/vmallocinfo
From: Christoph Lameter <clameter@xxxxxxx>
Implement a new proc file that allows the display of the currently allocated
vmalloc memory.
Signed-off-by: Christoph Lameter <clameter@xxxxxxx>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/proc/proc_misc.c | 14 +++++++
include/linux/vmalloc.h | 2 +
mm/vmalloc.c | 76 +++++++++++++++++++++++++++++++++++++-
3 files changed, 91 insertions(+), 1 deletion(-)
diff -puN fs/proc/proc_misc.c~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo fs/proc/proc_misc.c
--- a/fs/proc/proc_misc.c~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo
+++ a/fs/proc/proc_misc.c
@@ -456,6 +456,18 @@ static const struct file_operations proc
#endif
#endif
+static int vmalloc_open(struct inode *inode, struct file *file)
+{
+ return seq_open(file, &vmalloc_op);
+}
+
+static const struct file_operations proc_vmalloc_operations = {
+ .open = vmalloc_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
static int show_stat(struct seq_file *p, void *v)
{
int i;
@@ -869,6 +881,8 @@ void __init proc_misc_init(void)
create_seq_entry("slab_allocators", 0 ,&proc_slabstats_operations);
#endif
#endif
+ proc_create("vmallocinfo",S_IWUSR|S_IRUGO, NULL,
+ &proc_vmalloc_operations);
create_seq_entry("buddyinfo",S_IRUGO, &fragmentation_file_operations);
create_seq_entry("pagetypeinfo", S_IRUGO, &pagetypeinfo_file_ops);
create_seq_entry("vmstat",S_IRUGO, &proc_vmstat_file_operations);
diff -puN include/linux/vmalloc.h~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo include/linux/vmalloc.h
--- a/include/linux/vmalloc.h~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo
+++ a/include/linux/vmalloc.h
@@ -87,4 +87,6 @@ extern void free_vm_area(struct vm_struc
extern rwlock_t vmlist_lock;
extern struct vm_struct *vmlist;
+extern const struct seq_operations vmalloc_op;
+
#endif /* _LINUX_VMALLOC_H */
diff -puN mm/vmalloc.c~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo mm/vmalloc.c
--- a/mm/vmalloc.c~vmalloc-show-vmalloced-areas-via-proc-vmallocinfo
+++ a/mm/vmalloc.c
@@ -14,7 +14,7 @@
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/interrupt.h>
-
+#include <linux/seq_file.h>
#include <linux/vmalloc.h>
#include <asm/uaccess.h>
@@ -873,3 +873,77 @@ void free_vm_area(struct vm_struct *area
kfree(area);
}
EXPORT_SYMBOL_GPL(free_vm_area);
+
+
+#ifdef CONFIG_PROC_FS
+static void *s_start(struct seq_file *m, loff_t *pos)
+{
+ loff_t n = *pos;
+ struct vm_struct *v;
+
+ read_lock(&vmlist_lock);
+ v = vmlist;
+ while (n > 0 && v) {
+ n--;
+ v = v->next;
+ }
+ if (!n)
+ return v;
+
+ return NULL;
+
+}
+
+static void *s_next(struct seq_file *m, void *p, loff_t *pos)
+{
+ struct vm_struct *v = p;
+
+ ++*pos;
+ return v->next;
+}
+
+static void s_stop(struct seq_file *m, void *p)
+{
+ read_unlock(&vmlist_lock);
+}
+
+static int s_show(struct seq_file *m, void *p)
+{
+ struct vm_struct *v = p;
+
+ seq_printf(m, "0x%p-0x%p %7ld",
+ v->addr, v->addr + v->size, v->size);
+
+ if (v->nr_pages)
+ seq_printf(m, " pages=%d", v->nr_pages);
+
+ if (v->phys_addr)
+ seq_printf(m, " phys=%lx", v->phys_addr);
+
+ if (v->flags & VM_IOREMAP)
+ seq_printf(m, " ioremap");
+
+ if (v->flags & VM_ALLOC)
+ seq_printf(m, " vmalloc");
+
+ if (v->flags & VM_MAP)
+ seq_printf(m, " vmap");
+
+ if (v->flags & VM_USERMAP)
+ seq_printf(m, " user");
+
+ if (v->flags & VM_VPAGES)
+ seq_printf(m, " vpages");
+
+ seq_putc(m, '\n');
+ return 0;
+}
+
+const struct seq_operations vmalloc_op = {
+ .start = s_start,
+ .next = s_next,
+ .stop = s_stop,
+ .show = s_show,
+};
+#endif
+
_
Patches currently in -mm which might be from clameter@xxxxxxx are
mm-fix-boundary-checking-in-free_bootmem_core.patch
mm-fix-boundary-checking-in-free_bootmem_core-fix.patch
x86_64-free_bootmem-should-take-phy.patch
git-unionfs.patch
git-slub.patch
x86-cast-cmpxchg-and-cmpxchg_local-result-for-386-and-486.patch
remove-set_migrateflags.patch
mm-use-zonelists-instead-of-zones-when-direct-reclaiming-pages.patch
mm-introduce-node_zonelist-for-accessing-the-zonelist-for-a-gfp-mask.patch
mm-remember-what-the-preferred-zone-is-for-zone_statistics.patch
mm-use-two-zonelist-that-are-filtered-by-gfp-mask.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-fix-memcg-ooms.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-just-return-do_try_to_free_pages.patch
mm-have-zonelist-contains-structs-with-both-a-zone-pointer-and-zone_idx-just-return-do_try_to_free_pages-do_try_to_free_pages-gfp_mask-redundant.patch
mm-filter-based-on-a-nodemask-as-well-as-a-gfp_mask.patch
mm-filter-based-on-a-nodemask-as-well-as-a-gfp_mask-doc-fixes.patch
mm-filter-based-on-a-nodemask-as-well-as-a-gfp_mask-make-dequeue_huge_page_vma-obey-mpol_bind-nodemask.patch
mm-filter-based-on-a-nodemask-as-well-as-a-gfp_mask-make-dequeue_huge_page_vma-obey-mpol_bind-nodemask-rework.patch
mm-move-cache_line_size-to-linux-cacheh.patch
mempolicy-convert-mpol-constants-to-enum.patch
mempolicy-support-optional-mode-flags.patch
mempolicy-support-optional-mode-flags-fix.patch
mempolicy-add-mpol_f_static_nodes-flag.patch
mempolicy-add-bitmap_onto-and-bitmap_fold-operations.patch
mempolicy-add-mpol_f_relative_nodes-flag.patch
mempolicy-update-numa-memory-policy-documentation.patch
mempolicy-move-rebind-functions.patch
mempolicy-create-mempolicy_operations-structure.patch
mempolicy-create-mempolicy_operations-structure-fix.patch
mempolicy-small-header-file-cleanup.patch
mempolicy-disallow-static-or-relative-flags-for-local-preferred-mode.patch
mempolicy-fix-parsing-of-tmpfs-mpol-mount-option.patch
mm-make-mem_map-allocation-continuous.patch
mm-fix-alloc_bootmem_core-to-use-fast-searching-for-all-nodes.patch
mm-allocate-section_map-for-sparse_init.patch
mm-make-early_pfn_to_nid-a-c-function.patch
vmalloc-show-vmalloced-areas-via-proc-vmallocinfo.patch
vmalloc-show-vmalloced-areas-via-proc-vmallocinfo-checkpatch-fixes.patch
vmallocinfo-add-caller-information.patch
vmallocinfo-add-caller-information-checkpatch-fixes.patch
mm-add-nr_writeback_temp-counter.patch
remove-div_long_long_rem.patch
reiser4.patch
reiser4-portion-of-zero_user-cleanup-patch.patch
page-owner-tracking-leak-detector.patch
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