diff options
Diffstat (limited to 'packages/kexecboot/linux-kexecboot-2.6.24/tosa/0040-Clocklib-debugfs-support.patch')
| -rw-r--r-- | packages/kexecboot/linux-kexecboot-2.6.24/tosa/0040-Clocklib-debugfs-support.patch | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0040-Clocklib-debugfs-support.patch b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0040-Clocklib-debugfs-support.patch new file mode 100644 index 0000000000..160b274f4f --- /dev/null +++ b/packages/kexecboot/linux-kexecboot-2.6.24/tosa/0040-Clocklib-debugfs-support.patch @@ -0,0 +1,108 @@ +From cae12d96586dac77d223559d686487ea2d457a41 Mon Sep 17 00:00:00 2001 +From: Dmitry Baryshkov <dbaryshkov@gmail.com> +Date: Mon, 4 Feb 2008 03:01:05 +0300 +Subject: [PATCH 40/64] Clocklib debugfs support + +Provide /sys/kernel/debug/clock to ease debugging. + +Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com> +--- + include/linux/clklib.h | 5 +++ + kernel/clklib.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++ + 2 files changed, 73 insertions(+), 0 deletions(-) + +diff --git a/include/linux/clklib.h b/include/linux/clklib.h +index 4bd9b4a..f916693 100644 +--- a/include/linux/clklib.h ++++ b/include/linux/clklib.h +@@ -28,6 +28,11 @@ struct clk { + int (*setrate) (struct clk *, unsigned long); + long (*roundrate) (struct clk *, unsigned long); + ++ /* ++ * format any additional info ++ */ ++ int (*format) (struct clk *, struct seq_file *); ++ + void *priv; + }; + +diff --git a/kernel/clklib.c b/kernel/clklib.c +index 203af3d..b782220 100644 +--- a/kernel/clklib.c ++++ b/kernel/clklib.c +@@ -293,3 +293,71 @@ out: + return rc; + } + EXPORT_SYMBOL(clk_alloc_function); ++ ++#ifdef CONFIG_DEBUG_FS ++ ++#include <linux/debugfs.h> ++#include <linux/seq_file.h> ++static void dump_clocks(struct seq_file *s, struct clk *parent, int nest) ++{ ++ struct clk *clk; ++ int i; ++ ++ list_for_each_entry(clk, &clocks, node) { ++ if (clk->parent == parent) { ++ for (i = 0; i < nest; i++) ++ seq_putc(s, ' '); ++ seq_puts(s, clk->name); ++ ++ i = nest + strlen(clk->name); ++ if (i >= 16) ++ i = 15; ++ for (; i < 16; i++) ++ seq_putc(s, ' '); ++ seq_printf(s, "%c use=%d rate=%lu KHz", ++ clk->set_parent ? '*' : ' ', ++ clk->users, ++ __clk_get_rate(clk)); ++ if (clk->format) ++ clk->format(clk, s); ++ seq_putc(s, '\n'); ++ ++ dump_clocks(s, clk, nest + 1); ++ } ++ } ++} ++ ++static int clocklib_show(struct seq_file *s, void *unused) ++{ ++ unsigned long flags; ++ ++ spin_lock_irqsave(&clocks_lock, flags); ++ ++ dump_clocks(s, NULL, 0); ++ ++ spin_unlock_irqrestore(&clocks_lock, flags); ++ ++ return 0; ++} ++ ++static int clocklib_open(struct inode *inode, struct file *file) ++{ ++ return single_open(file, clocklib_show, NULL); ++} ++ ++static struct file_operations clocklib_operations = { ++ .open = clocklib_open, ++ .read = seq_read, ++ .llseek = seq_lseek, ++ .release = single_release, ++}; ++ ++static int __init clocklib_debugfs_init(void) ++{ ++ debugfs_create_file("clock", S_IFREG | S_IRUGO, ++ NULL, NULL, &clocklib_operations); ++ return 0; ++} ++subsys_initcall(clocklib_debugfs_init); ++ ++#endif /* DEBUG_FS */ +-- +1.5.3.8 + |