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authorVishal Badole <badolevishal1116@gmail.com>2022-11-27 22:53:19 +0530
committerStephen Boyd <sboyd@kernel.org>2023-10-23 20:20:37 -0700
commitdcce5cc7826e9c6b3a2443e5e6b7f8d02a103c35 (patch)
tree04d620f3809bebfdcc29f45d8d80d88b07ceda16 /drivers/clk/clk.c
parent0bb80ecc33a8fb5a682236443c1e740d5c917d1d (diff)
downloadlwn-dcce5cc7826e9c6b3a2443e5e6b7f8d02a103c35.tar.gz
lwn-dcce5cc7826e9c6b3a2443e5e6b7f8d02a103c35.zip
clk: Show active consumers of clocks in debugfs
This feature lists the clock consumer's name and respective connection id. Using this feature user can easily check that which user has acquired and enabled a particular clock. Usage: >> cat /sys/kernel/debug/clk/clk_summary enable prepare protect duty hardware Connection clock count count count rate accuracy phase cycle enable consumer Id ------------------------------------------------------------------------------------------------------------------------------ clk_mcasp0_fixed 0 0 0 24576000 0 0 50000 Y deviceless of_clk_get_from_provider deviceless no_connection_id clk_mcasp0 0 0 0 24576000 0 0 50000 N simple-audio-card,cpu no_connection_id deviceless no_connection_id Co-developed-by: Chinmoy Ghosh <chinmoyghosh2001@gmail.com> Signed-off-by: Chinmoy Ghosh <chinmoyghosh2001@gmail.com> Co-developed-by: Mintu Patel <mintupatel89@gmail.com> Signed-off-by: Mintu Patel <mintupatel89@gmail.com> Co-developed-by: Vimal Kumar <vimal.kumar32@gmail.com> Signed-off-by: Vimal Kumar <vimal.kumar32@gmail.com> Signed-off-by: Vishal Badole <badolevishal1116@gmail.com> Link: https://lore.kernel.org/r/1669569799-8526-1-git-send-email-badolevishal1116@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Diffstat (limited to 'drivers/clk/clk.c')
-rw-r--r--drivers/clk/clk.c34
1 files changed, 24 insertions, 10 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index c249f9791ae8..0544615d2a1d 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -3188,28 +3188,41 @@ static void clk_summary_show_one(struct seq_file *s, struct clk_core *c,
int level)
{
int phase;
+ struct clk *clk_user;
+ int multi_node = 0;
- seq_printf(s, "%*s%-*s %7d %8d %8d %11lu %10lu ",
+ seq_printf(s, "%*s%-*s %-7d %-8d %-8d %-11lu %-10lu ",
level * 3 + 1, "",
- 30 - level * 3, c->name,
+ 35 - level * 3, c->name,
c->enable_count, c->prepare_count, c->protect_count,
clk_core_get_rate_recalc(c),
clk_core_get_accuracy_recalc(c));
phase = clk_core_get_phase(c);
if (phase >= 0)
- seq_printf(s, "%5d", phase);
+ seq_printf(s, "%-5d", phase);
else
seq_puts(s, "-----");
- seq_printf(s, " %6d", clk_core_get_scaled_duty_cycle(c, 100000));
+ seq_printf(s, " %-6d", clk_core_get_scaled_duty_cycle(c, 100000));
if (c->ops->is_enabled)
- seq_printf(s, " %9c\n", clk_core_is_enabled(c) ? 'Y' : 'N');
+ seq_printf(s, " %5c ", clk_core_is_enabled(c) ? 'Y' : 'N');
else if (!c->ops->enable)
- seq_printf(s, " %9c\n", 'Y');
+ seq_printf(s, " %5c ", 'Y');
else
- seq_printf(s, " %9c\n", '?');
+ seq_printf(s, " %5c ", '?');
+
+ hlist_for_each_entry(clk_user, &c->clks, clks_node) {
+ seq_printf(s, "%*s%-*s %-25s\n",
+ level * 3 + 2 + 105 * multi_node, "",
+ 30,
+ clk_user->dev_id ? clk_user->dev_id : "deviceless",
+ clk_user->con_id ? clk_user->con_id : "no_connection_id");
+
+ multi_node = 1;
+ }
+
}
static void clk_summary_show_subtree(struct seq_file *s, struct clk_core *c,
@@ -3230,9 +3243,10 @@ static int clk_summary_show(struct seq_file *s, void *data)
struct clk_core *c;
struct hlist_head **lists = s->private;
- seq_puts(s, " enable prepare protect duty hardware\n");
- seq_puts(s, " clock count count count rate accuracy phase cycle enable\n");
- seq_puts(s, "-------------------------------------------------------------------------------------------------------\n");
+ seq_puts(s, " enable prepare protect duty hardware connection\n");
+ seq_puts(s, " clock count count count rate accuracy phase cycle enable consumer id\n");
+ seq_puts(s, "---------------------------------------------------------------------------------------------------------------------------------------------\n");
+
clk_prepare_lock();