[PATCH 25/25] lmb: Add debugfs files to dump the arrays content
in [Kernel]
|
Prev: [PATCH] Staging: comedi: Fix long line lengths in comedi_fops.c
Next: [PATCH 24/25] lmb: Make lmb_alloc_try_nid() fallback to LMB_ALLOC_ANYWHERE
From: Benjamin Herrenschmidt on 10 May 2010 05:50 Signed-off-by: Benjamin Herrenschmidt <benh(a)kernel.crashing.org> --- lib/lmb.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 51 insertions(+), 0 deletions(-) diff --git a/lib/lmb.c b/lib/lmb.c index 6c38c87..1e11891 100644 --- a/lib/lmb.c +++ b/lib/lmb.c @@ -16,6 +16,8 @@ #include <linux/bitops.h> #include <linux/poison.h> #include <linux/pfn.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> #include <linux/lmb.h> struct lmb lmb; @@ -696,3 +698,52 @@ static int __init early_lmb(char *p) } early_param("lmb", early_lmb); +#ifdef CONFIG_DEBUG_FS + +static int lmb_debug_show(struct seq_file *m, void *private) +{ + struct lmb_type *type = m->private; + struct lmb_region *reg; + int i; + + for (i = 0; i < type->cnt; i++) { + reg = &type->regions[i]; + seq_printf(m, "%4d: ", i); + if (sizeof(phys_addr_t) == 4) + seq_printf(m, "0x%08lx..0x%08lx\n", + (unsigned long)reg->base, + (unsigned long)(reg->base + reg->size - 1)); + else + seq_printf(m, "0x%016llx..0x%016llx\n", + (unsigned long long)reg->base, + (unsigned long long)(reg->base + reg->size - 1)); + + } + return 0; +} + +static int lmb_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, lmb_debug_show, inode->i_private); +} + +static const struct file_operations lmb_debug_fops = { + .open = lmb_debug_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; + +static int __init lmb_init_debugfs(void) +{ + struct dentry *root = debugfs_create_dir("lmb", NULL); + if (!root) + return -ENXIO; + debugfs_create_file("memory", S_IRUGO, root, &lmb.memory, &lmb_debug_fops); + debugfs_create_file("reserved", S_IRUGO, root, &lmb.reserved, &lmb_debug_fops); + + return 0; +} +__initcall(lmb_init_debugfs); + +#endif /* CONFIG_DEBUG_FS */ -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |