+ scripts-gdb-provide-kernel-list-item-generators.patch added to -mm tree

+ scripts-gdb-provide-kernel-list-item-generators.patch added to -mm tree

[akpm]

The patch titled
     Subject: scripts/gdb: provide kernel list item generators
has been added to the -mm tree.  Its filename is
     scripts-gdb-provide-kernel-list-item-generators.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/scripts-gdb-provide-kernel-list-item-generators.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/scripts-gdb-provide-kernel-list-item-generators.patch

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------------------------------------------------------
From: Kieran Bingham <kieran.bingham@linaro.org>
Subject: scripts/gdb: provide kernel list item generators

Facilitate linked-list items by providing a generator to return
the dereferenced, and type-cast objects from a kernel linked list

Link: http://lkml.kernel.org/r/2b0998564e6e5abe53585d466f87e491331fd2a4.1462865983.git.jan.kiszka@siemens.com
Signed-off-by: Kieran Bingham <kieran.bingham@linaro.org>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 scripts/gdb/linux/lists.py |   21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff -puN scripts/gdb/linux/lists.py~scripts-gdb-provide-kernel-list-item-generators scripts/gdb/linux/lists.py
--- a/scripts/gdb/linux/lists.py~scripts-gdb-provide-kernel-list-item-generators
+++ a/scripts/gdb/linux/lists.py
@@ -18,6 +18,27 @@ from linux import utils
 list_head = utils.CachedType("struct list_head")
 
 
+def list_for_each(head):
+    if head.type == list_head.get_type().pointer():
+        head = head.dereference()
+    elif head.type != list_head.get_type():
+        raise gdb.GdbError("Must be struct list_head not {}"
+                           .format(head.type))
+
+    node = head['next'].dereference()
+    while node.address != head.address:
+        yield node.address
+        node = node['next'].dereference()
+
+
+def list_for_each_entry(head, gdbtype, member):
+    for node in list_for_each(head):
+        if node.type != list_head.get_type().pointer():
+            raise TypeError("Type {} found. Expected struct list_head *."
+                            .format(node.type))
+        yield utils.container_of(node, gdbtype, member)
+
+
 def list_check(head):
     nb = 0
     if (head.type == list_head.get_type().pointer()):
_

Patches currently in -mm which might be from kieran.bingham@linaro.org are

scripts-gdb-provide-linux-constants.patch
scripts-gdb-provide-kernel-list-item-generators.patch
scripts-gdb-convert-modules-usage-to-lists-functions.patch
scripts-gdb-provide-exception-catching-parser.patch
scripts-gdb-support-config_modules-gracefully.patch
scripts-gdb-provide-a-dentry_name-vfs-path-helper.patch
scripts-gdb-add-io-resource-readers.patch
scripts-gdb-add-mount-point-list-command.patch
scripts-gdb-add-cpu-iterators.patch
scripts-gdb-add-a-radix-tree-parser.patch
scripts-gdb-add-documentation-example-for-radix-tree.patch
scripts-gdb-add-lx_thread_info_by_pid-helper.patch