The patch titled
Subject: scripts/gdb: provide exception catching parser
has been added to the -mm tree. Its filename is
scripts-gdb-provide-exception-catching-parser.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/scripts-gdb-provide-exception-catching-parser.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/scripts-gdb-provide-exception-catching-parser.patch
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------------------------------------------------------
From: Kieran Bingham <kieran.bingham@xxxxxxxxxx>
Subject: scripts/gdb: provide exception catching parser
If we attempt to read a value that is not available to GDB, an exception
is raised. Most of the time, this is a good thing; however on occasion we
will want to be able to determine if a symbol is available.
By catching the exception to simply return None, we can determine if we
tried to read an invalid value, without the exception taking our execution
context away from us
Link: http://lkml.kernel.org/r/c72b25c06fc66e1d68371154097e2cbb112555d8.1462865983.git.jan.kiszka@xxxxxxxxxxx
Signed-off-by: Kieran Bingham <kieran.bingham@xxxxxxxxxx>
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/gdb/linux/utils.py | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN scripts/gdb/linux/utils.py~scripts-gdb-provide-exception-catching-parser scripts/gdb/linux/utils.py
--- a/scripts/gdb/linux/utils.py~scripts-gdb-provide-exception-catching-parser
+++ a/scripts/gdb/linux/utils.py
@@ -154,3 +154,10 @@ def get_gdbserver_type():
if gdbserver_type is not None and hasattr(gdb, 'events'):
gdb.events.exited.connect(exit_handler)
return gdbserver_type
+
+
+def gdb_eval_or_none(expresssion):
+ try:
+ return gdb.parse_and_eval(expresssion)
+ except:
+ return None
_
Patches currently in -mm which might be from kieran.bingham@xxxxxxxxxx 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
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