| Message ID | 1356529583-19535-1-git-send-email-pgaikwad@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Quoting Prashant Gaikwad (2012-12-26 05:46:22) > Adds debug file "clk_summary" in /sys/kernel/debug/clk dir. > It helps to view all the clock registered in human-readable format. > > For example: > clock enable_cnt prepare_cnt rate > --------------------------------------------------------------------- > i2s0_sync 0 0 24000000 > spdif_in_sync 0 0 24000000 > spdif_mux 0 0 24000000 > spdif 0 0 24000000 > spdif_doubler 0 0 48000000 > spdif_div 0 0 48000000 > spdif_2x 0 0 48000000 > clk_32k 2 2 32768 > blink_override 1 1 32768 > blink 1 1 32768 > clk_m 2 2 12000000 > clk_out_3_mux 0 0 12000000 > clk_out_3 0 0 12000000 > pll_ref 3 3 12000000 > pll_e_mux 0 0 12000000 > pll_e 0 0 100000000 > cml0 0 0 100000000 > cml1 0 0 100000000 > pciex 0 0 100000000 > pll_d2 0 0 1000000 > pll_d2_out0 0 0 500000 > pll_d 0 0 1000000 > pll_d_out0 0 0 500000 > dsib_mux 0 0 500000 > dsib 0 0 500000 > dsia 0 0 500000 > > Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> Thanks for the respin of patch #1 and for generating the JSON output format in patch #2. I've taken both of these into clk-next. Regards, Mike > --- > drivers/clk/clk.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++ > 1 files changed, 67 insertions(+), 0 deletions(-) > > diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c > index 56e4495e..d79c088 100644 > --- a/drivers/clk/clk.c > +++ b/drivers/clk/clk.c > @@ -34,6 +34,67 @@ static struct dentry *rootdir; > static struct dentry *orphandir; > static int inited = 0; > > +static void clk_summary_show_one(struct seq_file *s, struct clk *c, int level) > +{ > + if (!c) > + return; > + > + seq_printf(s, "%*s%-*s %-11d %-12d %-10lu", > + level * 3 + 1, "", > + 30 - level * 3, c->name, > + c->enable_count, c->prepare_count, c->rate); > + seq_printf(s, "\n"); > +} > + > +static void clk_summary_show_subtree(struct seq_file *s, struct clk *c, > + int level) > +{ > + struct clk *child; > + struct hlist_node *tmp; > + > + if (!c) > + return; > + > + clk_summary_show_one(s, c, level); > + > + hlist_for_each_entry(child, tmp, &c->children, child_node) > + clk_summary_show_subtree(s, child, level + 1); > +} > + > +static int clk_summary_show(struct seq_file *s, void *data) > +{ > + struct clk *c; > + struct hlist_node *tmp; > + > + seq_printf(s, " clock enable_cnt prepare_cnt rate\n"); > + seq_printf(s, "---------------------------------------------------------------------\n"); > + > + mutex_lock(&prepare_lock); > + > + hlist_for_each_entry(c, tmp, &clk_root_list, child_node) > + clk_summary_show_subtree(s, c, 0); > + > + hlist_for_each_entry(c, tmp, &clk_orphan_list, child_node) > + clk_summary_show_subtree(s, c, 0); > + > + mutex_unlock(&prepare_lock); > + > + return 0; > +} > + > + > +static int clk_summary_open(struct inode *inode, struct file *file) > +{ > + return single_open(file, clk_summary_show, inode->i_private); > +} > + > +static const struct file_operations clk_summary_fops = { > + .open = clk_summary_open, > + .read = seq_read, > + .llseek = seq_lseek, > + .release = single_release, > +}; > + > /* caller must hold prepare_lock */ > static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry) > { > @@ -167,12 +228,18 @@ static int __init clk_debug_init(void) > { > struct clk *clk; > struct hlist_node *tmp; > + struct dentry *d; > > rootdir = debugfs_create_dir("clk", NULL); > > if (!rootdir) > return -ENOMEM; > > + d = debugfs_create_file("clk_summary", S_IRUGO, rootdir, NULL, > + &clk_summary_fops); > + if (!d) > + return -ENOMEM; > + > orphandir = debugfs_create_dir("orphans", rootdir); > > if (!orphandir) > -- > 1.7.4.1
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 56e4495e..d79c088 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -34,6 +34,67 @@ static struct dentry *rootdir; static struct dentry *orphandir; static int inited = 0; +static void clk_summary_show_one(struct seq_file *s, struct clk *c, int level) +{ + if (!c) + return; + + seq_printf(s, "%*s%-*s %-11d %-12d %-10lu", + level * 3 + 1, "", + 30 - level * 3, c->name, + c->enable_count, c->prepare_count, c->rate); + seq_printf(s, "\n"); +} + +static void clk_summary_show_subtree(struct seq_file *s, struct clk *c, + int level) +{ + struct clk *child; + struct hlist_node *tmp; + + if (!c) + return; + + clk_summary_show_one(s, c, level); + + hlist_for_each_entry(child, tmp, &c->children, child_node) + clk_summary_show_subtree(s, child, level + 1); +} + +static int clk_summary_show(struct seq_file *s, void *data) +{ + struct clk *c; + struct hlist_node *tmp; + + seq_printf(s, " clock enable_cnt prepare_cnt rate\n"); + seq_printf(s, "---------------------------------------------------------------------\n"); + + mutex_lock(&prepare_lock); + + hlist_for_each_entry(c, tmp, &clk_root_list, child_node) + clk_summary_show_subtree(s, c, 0); + + hlist_for_each_entry(c, tmp, &clk_orphan_list, child_node) + clk_summary_show_subtree(s, c, 0); + + mutex_unlock(&prepare_lock); + + return 0; +} + + +static int clk_summary_open(struct inode *inode, struct file *file) +{ + return single_open(file, clk_summary_show, inode->i_private); +} + +static const struct file_operations clk_summary_fops = { + .open = clk_summary_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + /* caller must hold prepare_lock */ static int clk_debug_create_one(struct clk *clk, struct dentry *pdentry) { @@ -167,12 +228,18 @@ static int __init clk_debug_init(void) { struct clk *clk; struct hlist_node *tmp; + struct dentry *d; rootdir = debugfs_create_dir("clk", NULL); if (!rootdir) return -ENOMEM; + d = debugfs_create_file("clk_summary", S_IRUGO, rootdir, NULL, + &clk_summary_fops); + if (!d) + return -ENOMEM; + orphandir = debugfs_create_dir("orphans", rootdir); if (!orphandir)
Adds debug file "clk_summary" in /sys/kernel/debug/clk dir. It helps to view all the clock registered in human-readable format. For example: clock enable_cnt prepare_cnt rate --------------------------------------------------------------------- i2s0_sync 0 0 24000000 spdif_in_sync 0 0 24000000 spdif_mux 0 0 24000000 spdif 0 0 24000000 spdif_doubler 0 0 48000000 spdif_div 0 0 48000000 spdif_2x 0 0 48000000 clk_32k 2 2 32768 blink_override 1 1 32768 blink 1 1 32768 clk_m 2 2 12000000 clk_out_3_mux 0 0 12000000 clk_out_3 0 0 12000000 pll_ref 3 3 12000000 pll_e_mux 0 0 12000000 pll_e 0 0 100000000 cml0 0 0 100000000 cml1 0 0 100000000 pciex 0 0 100000000 pll_d2 0 0 1000000 pll_d2_out0 0 0 500000 pll_d 0 0 1000000 pll_d_out0 0 0 500000 dsib_mux 0 0 500000 dsib 0 0 500000 dsia 0 0 500000 Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com> --- drivers/clk/clk.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 67 insertions(+), 0 deletions(-)