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[POWERPC] Make the debugfs "powerpc" dir globally accessible 

The prom.c debugging code creates a "powerpc" directory in debugfs,
which is nice, but doesn't allow any other debugging code to stick things
under "powerpc" in debugfs. So make it global.

While we're there we should make the prom.c debugging code depend on
CONFIG_DEBUG_FS, because it doesn't work otherwise.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Michael Ellerman 2007-06-20 10:54:19 +10:00 committed by Paul Mackerras
parent db0dbae9d9
commit 94a3807c2a
3 changed files with 18 additions and 6 deletions
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9
arch/powerpc/kernel/prom.c
View File

@ -52,6 +52,7 @@
#include <asm/pSeries_reconfig.h>
#include <asm/pci-bridge.h>
#include <asm/kexec.h>
#include <asm/system.h>
#ifdef DEBUG
#define DBG(fmt...) printk(KERN_ERR fmt)
@ -1730,22 +1731,18 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
}
EXPORT_SYMBOL(of_get_cpu_node);
#ifdef DEBUG
#if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
static struct debugfs_blob_wrapper flat_dt_blob;
static int __init export_flat_device_tree(void)
{
struct dentry *d;
d = debugfs_create_dir("powerpc", NULL);
if (!d)
return 1;
flat_dt_blob.data = initial_boot_params;
flat_dt_blob.size = initial_boot_params->totalsize;
d = debugfs_create_blob("flat-device-tree", S_IFREG | S_IRUSR,
d, &flat_dt_blob);
powerpc_debugfs_root, &flat_dt_blob);
if (!d)
return 1;

13
arch/powerpc/kernel/setup-common.c
View File

@ -32,6 +32,7 @@
#include <linux/unistd.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/debugfs.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/processor.h>
@ -579,3 +580,15 @@ static int __init check_cache_coherency(void)
late_initcall(check_cache_coherency);
#endif /* CONFIG_CHECK_CACHE_COHERENCY */
#ifdef CONFIG_DEBUG_FS
struct dentry *powerpc_debugfs_root;
static int powerpc_debugfs_init(void)
{
powerpc_debugfs_root = debugfs_create_dir("powerpc", NULL);
return powerpc_debugfs_root == NULL;
}
arch_initcall(powerpc_debugfs_init);
#endif

2
include/asm-powerpc/system.h
View File

@ -559,5 +559,7 @@ static inline void create_function_call(unsigned long addr, void * func)
extern void account_system_vtime(struct task_struct *);
#endif
extern struct dentry *powerpc_debugfs_root;
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_SYSTEM_H */