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vsprintf: use new vsprintf symbolic function pointer format 

Use the '%pF' format to get rid of an "#ifdef DEBUG" and make some printks
atomic.

This removes the last in-tree uses of print_fn_descriptor_symbol().  I
marked print_fn_descriptor_symbol() deprecated and scheduled it for
removal next year to give time for out-of-tree modules to be updated.

parisc's print_fn_descriptor_symbol() is currently broken there (it needs
to dereference the function pointer similar to ia64 and power).  This
patch shouldn't make anything worse, but it means we need to fix
dereference_function_descriptor() instead of print_fn_descriptor_symbol()
to get meaningful initcall_debug output.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Bjorn Helgaas 2008-10-15 22:01:35 -07:00 committed by Linus Torvalds
parent 404d0ae289
commit c80cfb0406
3 changed files with 14 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
Documentation/feature-removal-schedule.txt
View File

@ -294,6 +294,15 @@ Who: Jiri Slaby <jirislaby@gmail.com>
---------------------------
What: print_fn_descriptor_symbol()
When: October 2009
Why: The %pF vsprintf format provides the same functionality in a
simpler way. print_fn_descriptor_symbol() is deprecated but
still present to give out-of-tree modules time to change.
Who: Bjorn Helgaas <bjorn.helgaas@hp.com>
---------------------------
What: /sys/o2cb symlink
When: January 2010
Why: /sys/fs/o2cb is the proper location for this information - /sys/o2cb

7
drivers/base/power/main.c
View File

@ -778,10 +778,7 @@ EXPORT_SYMBOL_GPL(device_suspend);
void __suspend_report_result(const char *function, void *fn, int ret)
{
if (ret) {
printk(KERN_ERR "%s(): ", function);
print_fn_descriptor_symbol("%s returns ", fn);
printk("%d\n", ret);
}
if (ret)
printk(KERN_ERR "%s(): %pF returns %d\n", function, fn, ret);
}
EXPORT_SYMBOL_GPL(__suspend_report_result);

8
include/linux/kallsyms.h
View File

@ -93,12 +93,10 @@ static inline void print_symbol(const char *fmt, unsigned long addr)
}
/*
* Pretty-print a function pointer.
*
* ia64 and ppc64 function pointers are really function descriptors,
* which contain a pointer the real address.
* Pretty-print a function pointer. This function is deprecated.
* Please use the "%pF" vsprintf format instead.
*/
static inline void print_fn_descriptor_symbol(const char *fmt, void *addr)
static inline void __deprecated print_fn_descriptor_symbol(const char *fmt, void *addr)
{
#if defined(CONFIG_IA64) || defined(CONFIG_PPC64)
addr = *(void **)addr;