From: Leonard Crestez <leonard.crestez@nxp.com>
Date: Tue, 14 May 2019 22:46:11 +0000 (-0700)
Subject: scripts/gdb: add $lx_clk_core_lookup function
X-Git-Tag: v5.4-rc1~985^2~21
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=988b2686159759401a4549d0fc30ff9a8758391a;p=platform%2Fkernel%2Flinux-rpi.git

scripts/gdb: add $lx_clk_core_lookup function

Finding an individual clk_core requires walking the tree which can be
quite complicated so add a helper for easy access.

(gdb) print *(struct clk_scu*)$lx_clk_core_lookup("uart0_clk")->hw

Link: http://lkml.kernel.org/r/Message-ID:
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Jason Wessel <jason.wessel@windriver.com>
Cc: Kieran Bingham <kbingham@kernel.org>
Cc: Stephen Boyd <swboyd@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/scripts/gdb/linux/clk.py b/scripts/gdb/linux/clk.py
index a9129d8..6bf7197 100644
--- a/scripts/gdb/linux/clk.py
+++ b/scripts/gdb/linux/clk.py
@@ -44,3 +44,26 @@ class LxClkSummary(gdb.Command):
 
 
 LxClkSummary()
+
+
+class LxClkCoreLookup(gdb.Function):
+    """Find struct clk_core by name"""
+
+    def __init__(self):
+        super(LxClkCoreLookup, self).__init__("lx_clk_core_lookup")
+
+    def lookup_hlist(self, hlist_head, name):
+        for child in clk_core_for_each_child(hlist_head):
+            if child['name'].string() == name:
+                return child
+            result = self.lookup_hlist(child['children'], name)
+            if result:
+                return result
+
+    def invoke(self, name):
+        name = name.string()
+        return (self.lookup_hlist(gdb.parse_and_eval("clk_root_list"), name) or
+                self.lookup_hlist(gdb.parse_and_eval("clk_orphan_list"), name))
+
+
+LxClkCoreLookup()