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authorLeonard Crestez <leonard.crestez@nxp.com>2019-05-14 15:46:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 19:52:52 -0700
commite7e6f462c1bee842b857b57826e47e4234728727 (patch)
tree131805ae0b51543fe9e4139093cc7d047b5854bc
parent66d5c7c60acfeb21d80ff03a349e3b6600caa117 (diff)
download96b-common-e7e6f462c1bee842b857b57826e47e4234728727.tar.gz
scripts/gdb: print cached rate in lx-clk-summary
The clk rate is always stored in clk_core but might be out of date and require calls to update from hardware.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. Link: http://lkml.kernel.org/r/1a474318982a5f0125f2360c4161029b17f56bd1.1556881728.git.leonard.crestez@nxp.com 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>
-rw-r--r--scripts/gdb/linux/clk.py21
-rw-r--r--scripts/gdb/linux/constants.py.in4
2 files changed, 18 insertions, 7 deletions
diff --git a/scripts/gdb/linux/clk.py b/scripts/gdb/linux/clk.py
index 6bf71976b55d..061aecfa294e 100644
--- a/scripts/gdb/linux/clk.py
+++ b/scripts/gdb/linux/clk.py
@@ -5,7 +5,7 @@
import gdb
import sys
-from linux import utils, lists
+from linux import utils, lists, constants
clk_core_type = utils.CachedType("struct clk_core")
@@ -16,27 +16,34 @@ def clk_core_for_each_child(hlist_head):
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+are cached and potentially out of date"""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")):
diff --git a/scripts/gdb/linux/constants.py.in b/scripts/gdb/linux/constants.py.in
index 76f46f427b96..1d73083da6cb 100644
--- a/scripts/gdb/linux/constants.py.in
+++ b/scripts/gdb/linux/constants.py.in
@@ -12,6 +12,7 @@
*
*/
+#include <linux/clk-provider.h>
#include <linux/fs.h>
#include <linux/hrtimer.h>
#include <linux/mount.h>
@@ -38,6 +39,9 @@
import gdb
+/* linux/clk-provider.h */
+LX_GDBPARSED(CLK_GET_RATE_NOCACHE)
+
/* linux/fs.h */
LX_VALUE(SB_RDONLY)
LX_VALUE(SB_SYNCHRONOUS)