The patch titled
Subject: scripts/gdb: add lx_current convenience function
has been added to the -mm tree. Its filename is
scripts-gdb-add-lx_current-convenience-function.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/scripts-gdb-add-lx_current-convenience-function.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/scripts-gdb-add-lx_current-convenience-function.patch
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------------------------------------------------------
From: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Subject: scripts/gdb: add lx_current convenience function
This is a shorthand for *$lx_per_cpu("current_task"), i.e. a convenience
function to retrieve the currently running task of the active context.
Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jason Wessel <jason.wessel@xxxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Cc: Ben Widawsky <ben@xxxxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/gdb/linux/cpus.py | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff -puN scripts/gdb/linux/cpus.py~scripts-gdb-add-lx_current-convenience-function scripts/gdb/linux/cpus.py
--- a/scripts/gdb/linux/cpus.py~scripts-gdb-add-lx_current-convenience-function
+++ a/scripts/gdb/linux/cpus.py
@@ -66,3 +66,20 @@ Note that VAR has to be quoted as string
PerCpu()
+
+
+class LxCurrentFunc(gdb.Function):
+ """Return current task.
+
+$lx_current([CPU]): Return the per-cpu task variable for the given CPU
+number. If CPU is omitted, the CPU of the current context is used."""
+
+ def __init__(self):
+ super(LxCurrentFunc, self).__init__("lx_current")
+
+ def invoke(self, cpu=-1):
+ var_ptr = gdb.parse_and_eval("¤t_task")
+ return per_cpu(var_ptr, cpu).dereference()
+
+
+LxCurrentFunc()
_
Patches currently in -mm which might be from jan.kiszka@xxxxxxxxxxx are
scripts-gdb-add-infrastructure.patch
scripts-gdb-add-cache-for-type-objects.patch
scripts-gdb-add-container_of-helper-and-convenience-function.patch
scripts-gdb-add-module-iteration-class.patch
scripts-gdb-add-lx-symbols-command.patch
module-do-not-inline-do_init_module.patch
scripts-gdb-add-automatic-symbol-reloading-on-module-insertion.patch
scripts-gdb-add-internal-helper-and-convenience-function-to-look-up-a-module.patch
scripts-gdb-add-get_target_endianness-helper.patch
scripts-gdb-add-read_u16-32-64-helpers.patch
scripts-gdb-add-lx-dmesg-command.patch
scripts-gdb-add-task-iteration-class.patch
scripts-gdb-add-helper-and-convenience-function-to-look-up-tasks.patch
scripts-gdb-add-is_target_arch-helper.patch
scripts-gdb-add-internal-helper-and-convenience-function-to-retrieve-thread_info.patch
scripts-gdb-add-get_gdbserver_type-helper.patch
scripts-gdb-add-internal-helper-and-convenience-function-for-per-cpu-lookup.patch
scripts-gdb-add-lx_current-convenience-function.patch
scripts-gdb-add-class-to-iterate-over-cpu-masks.patch
scripts-gdb-add-lx-lsmod-command.patch
scripts-gdb-add-basic-documentation.patch
scripts-gdb-port-to-python3-gdb77.patch
scripts-gdb-ignore-byte-compiled-python-files.patch
scripts-gdb-use-a-generator-instead-of-iterator-for-task-list.patch
scripts-gdb-convert-modulelist-to-generator-function.patch
scripts-gdb-convert-cpulist-to-generator-function.patch
scripts-gdb-define-maintainer.patch
scripts-gdb-disable-pagination-while-printing-from-breakpoint-handler.patch
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