Commit 116b47b4 authored Feb 17, 2015 by Jan Kiszka Committed by Linus Torvalds Feb 17, 2015

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@siemens.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Borislav Petkov <bp@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent fe7f9ed9

scripts/gdb/linux/cpus.py

+17 −0

Original line number	Diff line number	Diff line
		@@ -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("&current_task")
		return per_cpu(var_ptr, cpu).dereference()


		LxCurrentFunc()