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parisc: add ftrace (function and graph tracer) functionality

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This patch adds the ftrace debugging functionality to the parisc kernel.
It will currently only work with 64bit kernels, because the gcc options -pg
and -ffunction-sections can't be enabled at the same time and -ffunction-sections
is still needed to be able to link 32bit kernels.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
This commit is contained in:
Helge Deller
2009-02-09 00:43:36 +01:00
committed by Kyle McMartin
parent 803094f480
commit d75f054a2c
11 changed files with 269 additions and 4 deletions
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3
arch/parisc/kernel/time.c
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@@ -24,6 +24,7 @@
#include <linux/profile.h>
#include <linux/clocksource.h>
#include <linux/platform_device.h>
#include <linux/ftrace.h>
#include <asm/uaccess.h>
#include <asm/io.h>
@@ -53,7 +54,7 @@ static unsigned long clocktick __read_mostly; /* timer cycles per tick */
* held off for an arbitrarily long period of time by interrupts being
* disabled, so we may miss one or more ticks.
*/
irqreturn_t timer_interrupt(int irq, void *dev_id)
irqreturn_t __irq_entry timer_interrupt(int irq, void *dev_id)
{
unsigned long now;
unsigned long next_tick;