The patch titled
Subject: scripts/gdb: add cpu iterators
has been added to the -mm tree. Its filename is
scripts-gdb-add-cpu-iterators.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/scripts-gdb-add-cpu-iterators.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/scripts-gdb-add-cpu-iterators.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Kieran Bingham <kieran.bingham@xxxxxxxxxx>
Subject: scripts/gdb: add cpu iterators
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.
Link: http://lkml.kernel.org/r/d045c6599771ada1999d49612ee30fd2f9acf17f.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/cpus.py | 38 ++++++++++++++++++++++++++++++++++++
1 file changed, 38 insertions(+)
diff -puN scripts/gdb/linux/cpus.py~scripts-gdb-add-cpu-iterators scripts/gdb/linux/cpus.py
--- a/scripts/gdb/linux/cpus.py~scripts-gdb-add-cpu-iterators
+++ a/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.
_
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
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
