@@ -3,42 +3,49 @@
# Copyright (c) NXP 2019
import gdb
import sys
-from linux import utils, lists
+from linux import utils, lists, constants
clk_core_type = utils.CachedType("struct clk_core")
def clk_core_for_each_child(hlist_head):
return lists.hlist_for_each_entry(hlist_head,
clk_core_type.get_type().pointer(), "child_node")
class LxClkSummary(gdb.Command):
- """Print Linux kernel log buffer."""
+ """Print clk tree summary
+
+Output is a subset of /sys/kernel/debug/clk/clk_summary
+
+No calls are made during printing, instead a (c) if printed after values which
+are cached and potentially out of date"""
def __init__(self):
super(LxClkSummary, self).__init__("lx-clk-summary", gdb.COMMAND_DATA)
def show_subtree(self, clk, level):
- gdb.write("%*s%-*s %7d %8d %8d\n" % (
+ gdb.write("%*s%-*s %7d %8d %8d %11lu%s\n" % (
level * 3 + 1, "",
30 - level * 3,
clk['name'].string(),
clk['enable_count'],
clk['prepare_count'],
- clk['protect_count']))
+ clk['protect_count'],
+ clk['rate'],
+ '(c)' if clk['flags'] & constants.LX_CLK_GET_RATE_NOCACHE else ' '))
for child in clk_core_for_each_child(clk['children']):
self.show_subtree(child, level + 1)
def invoke(self, arg, from_tty):
- gdb.write(" enable prepare protect\n")
- gdb.write(" clock count count count\n")
- gdb.write("---------------------------------------------------------\n")
+ gdb.write(" enable prepare protect \n")
+ gdb.write(" clock count count count rate \n")
+ gdb.write("------------------------------------------------------------------------\n")
for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_root_list")):
self.show_subtree(clk, 0)
for clk in clk_core_for_each_child(gdb.parse_and_eval("clk_orphan_list")):
self.show_subtree(clk, 0)
@@ -10,10 +10,11 @@
*
* This work is licensed under the terms of the GNU GPL version 2.
*
*/
+#include <linux/clk-provider.h>
#include <linux/fs.h>
#include <linux/hrtimer.h>
#include <linux/mount.h>
#include <linux/of_fdt.h>
#include <linux/threads.h>
@@ -36,10 +37,13 @@
/* The build system will take care of deleting everything above this marker */
<!-- end-c-headers -->
import gdb
+/* linux/clk-provider.h */
+LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
+
/* linux/fs.h */
LX_VALUE(SB_RDONLY)
LX_VALUE(SB_SYNCHRONOUS)
LX_VALUE(SB_MANDLOCK)
LX_VALUE(SB_DIRSYNC)
The clk rate is always stored in clk_core but might be out of date and require calls to update from hardware. Deal with that case by printing a (c) suffix. Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> --- scripts/gdb/linux/clk.py | 21 ++++++++++++++------- scripts/gdb/linux/constants.py.in | 4 ++++ 2 files changed, 18 insertions(+), 7 deletions(-)