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ftrace: support for PowerPC

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This patch adds full support for ftrace for PowerPC (both 64 and 32 bit).
This includes dynamic tracing and function filtering.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Steven Rostedt
2008-05-14 23:49:44 -04:00
committed by Thomas Gleixner
parent e0eca07bad
commit 4e491d14f2
11 changed files with 405 additions and 10 deletions
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11
arch/powerpc/kernel/setup_32.c
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@@ -47,6 +47,11 @@
#include <asm/kgdb.h>
#endif
#ifdef CONFIG_FTRACE
extern void _mcount(void);
EXPORT_SYMBOL(_mcount);
#endif
extern void bootx_init(unsigned long r4, unsigned long phys);
int boot_cpuid;
@@ -81,7 +86,7 @@ int ucache_bsize;
* from the address that it was linked at, so we must use RELOC/PTRRELOC
* to access static data (including strings). -- paulus
*/
unsigned long __init early_init(unsigned long dt_ptr)
notrace unsigned long __init early_init(unsigned long dt_ptr)
{
unsigned long offset = reloc_offset();
struct cpu_spec *spec;
@@ -111,7 +116,7 @@ unsigned long __init early_init(unsigned long dt_ptr)
* This is called very early on the boot process, after a minimal
* MMU environment has been set up but before MMU_init is called.
*/
void __init machine_init(unsigned long dt_ptr, unsigned long phys)
notrace void __init machine_init(unsigned long dt_ptr, unsigned long phys)
{
/* Enable early debugging if any specified (see udbg.h) */
udbg_early_init();
@@ -133,7 +138,7 @@ void __init machine_init(unsigned long dt_ptr, unsigned long phys)
#ifdef CONFIG_BOOKE_WDT
/* Checks wdt=x and wdt_period=xx command-line option */
int __init early_parse_wdt(char *p)
notrace int __init early_parse_wdt(char *p)
{
if (p && strncmp(p, "0", 1) != 0)
booke_wdt_enabled = 1;