Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753400AbcC3MCJ (ORCPT ); Wed, 30 Mar 2016 08:02:09 -0400 Received: from mail-wm0-f51.google.com ([74.125.82.51]:34982 "EHLO mail-wm0-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752855AbcC3MBR (ORCPT ); Wed, 30 Mar 2016 08:01:17 -0400 From: Kieran Bingham To: jan.kiszka@siemens.com, linux-kernel@vger.kernel.org Cc: lee.jones@linaro.org, peter.griffin@linaro.org, maxime.coquelin@st.com, Kieran Bingham Subject: [PATCHv4 09/12] scripts/gdb: Add cpu iterators Date: Wed, 30 Mar 2016 13:00:48 +0100 Message-Id: <1459339251-29611-10-git-send-email-kieran.bingham@linaro.org> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1459339251-29611-1-git-send-email-kieran.bingham@linaro.org> References: <1459339251-29611-1-git-send-email-kieran.bingham@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1869 Lines: 66 The linux kernel provides macro's for iterating against values from the cpu_list masks. By providing some commonly used masks, we can mirror the kernels helper macros with easy to use generators. Signed-off-by: Kieran Bingham --- Changes from v3: - rebased to adapt for the cpu_*_mask indirection layer removals - cpu_active_mask added for completeness - print_cpus() converted to lx-cpus command --- scripts/gdb/linux/cpus.py | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/scripts/gdb/linux/cpus.py b/scripts/gdb/linux/cpus.py index 4297b83fedef..fc316fb3a3d4 100644 --- a/scripts/gdb/linux/cpus.py +++ b/scripts/gdb/linux/cpus.py @@ -100,6 +100,44 @@ def cpu_list(mask_name): yield cpu +def each_online_cpu(): + for cpu in cpu_list("__cpu_online_mask"): + yield cpu + + +def each_present_cpu(): + for cpu in cpu_list("__cpu_present_mask"): + yield cpu + + +def each_possible_cpu(): + for cpu in cpu_list("__cpu_possible_mask"): + yield cpu + + +def each_active_cpu(): + for cpu in cpu_list("__cpu_active_mask"): + yield cpu + + +class LxCpus(gdb.Command): + """List CPU status arrays + +Displays the known state of each CPU based on the kernel masks +and can help identify the state of hotplugged CPUs""" + + def __init__(self): + super(LxCpus, self).__init__("lx-cpus", gdb.COMMAND_DATA) + + def invoke(self, arg, from_tty): + gdb.write("Possible CPUs : {}\n".format(list(each_possible_cpu()))) + gdb.write("Present CPUs : {}\n".format(list(each_present_cpu()))) + gdb.write("Online CPUs : {}\n".format(list(each_online_cpu()))) + gdb.write("Active CPUs : {}\n".format(list(each_active_cpu()))) + +LxCpus() + + class PerCpu(gdb.Function): """Return per-cpu variable. -- 2.5.0