[PATCH 03/22] msm: clock: Invert debugfs directory layout

Stephen Boyd
2010-12-17T00:50:20Z

There are currently 3 separate directories for clock debugging in
debugfs: clk_enable, clk_rate, and clk_local. Each of these
directories contains a list of clocks. This is rather annoying
when you are focusing on one clock and want to enable/disable it
and then check its rate. You either have to cd to the other
directory or cat ../clk_rate/<clk>.

Invert the layout so that there is one clock directory containing
a directory for each clock. Inside each respective clock
directory place an enable, rate, and is_local file relating to
the clk_enable, clk_disable, and clk_local directories that exist
today.

Reviewed-by: Saravana Kannan <skannan@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
---
arch/arm/mach-msm/clock-debug.c | 48 ++++++++++++++++++--------------------
1 files changed, 23 insertions(+), 25 deletions(-)

diff --git a/arch/arm/mach-msm/clock-debug.c b/arch/arm/mach-msm/clock-debug.c
index 6f603ed..b67b9e82 100644
--- a/arch/arm/mach-msm/clock-debug.c
+++ b/arch/arm/mach-msm/clock-debug.c
@@ -87,47 +87,45 @@ static int clock_debug_local_get(void *data, u64 *val)
DEFINE_SIMPLE_ATTRIBUTE(clock_local_fops, clock_debug_local_get,
NULL, "%llu\n");

-static struct dentry *dent_rate, *dent_enable, *dent_local;
+static struct dentry *debugfs_base;

int __init clock_debug_init(void)
{
- dent_rate = debugfs_create_dir("clk_rate", 0);
- if (!dent_rate)
- goto err;
-
- dent_enable = debugfs_create_dir("clk_enable", 0);
- if (!dent_enable)
- goto err;
-
- dent_local = debugfs_create_dir("clk_local", NULL);
- if (!dent_local)
- goto err;
-
+ debugfs_base = debugfs_create_dir("clk", NULL);
+ if (!debugfs_base)
+ return -ENOMEM;
return 0;
-err:
- debugfs_remove(dent_local);
- debugfs_remove(dent_enable);
- debugfs_remove(dent_rate);
- return -ENOMEM;
}

int __init clock_debug_add(struct clk *clock)
{
char temp[50], *ptr;
+ struct dentry *clk_dir;

- if (!dent_rate || !dent_enable || !dent_local)
+ if (!debugfs_base)
return -ENOMEM;

strncpy(temp, clock->dbg_name, ARRAY_SIZE(temp)-1);
for (ptr = temp; *ptr; ptr++)
*ptr = tolower(*ptr);

- debugfs_create_file(temp, S_IRUGO | S_IWUSR, dent_rate,
- clock, &clock_rate_fops);
- debugfs_create_file(temp, S_IRUGO | S_IWUSR, dent_enable,
- clock, &clock_enable_fops);
- debugfs_create_file(temp, S_IRUGO, dent_local,
- clock, &clock_local_fops);
+ clk_dir = debugfs_create_dir(temp, debugfs_base);
+ if (!clk_dir)
+ return -ENOMEM;
+
+ if (!debugfs_create_file("rate", S_IRUGO | S_IWUSR, clk_dir,
+ clock, &clock_rate_fops))
+ goto error;

+ if (!debugfs_create_file("enable", S_IRUGO | S_IWUSR, clk_dir,
+ clock, &clock_enable_fops))
+ goto error;
+
+ if (!debugfs_create_file("is_local", S_IRUGO, clk_dir, clock,
+ &clock_local_fops))
+ goto error;
return 0;
+error:
+ debugfs_remove_recursive(clk_dir);
+ return -ENOMEM;