6.6-stable review patch. If anyone has any objections, please let me know.
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From: Vishal Badole badolevishal1116@gmail.com
[ Upstream commit dcce5cc7826e9c6b3a2443e5e6b7f8d02a103c35 ]
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@... Signed-off-by: Stephen Boyd sboyd@kernel.org Stable-dep-of: 9d1e795f754d ("clk: Get runtime PM before walking tree for clk_summary") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/clk.c | 34 ++++++++++++++++++++++++---------- 1 file changed, 24 insertions(+), 10 deletions(-)
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 7c87a8084df76..011e7632541fa 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -3279,28 +3279,41 @@ 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, @@ -3321,9 +3334,10 @@ 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();