diff options
| author | Robin Getz <robin.getz@analog.com> | 2007-07-25 03:03:28 (GMT) |
|---|---|---|
| committer | Bryan Wu <bryan.wu@analog.com> | 2007-07-25 03:03:28 (GMT) |
| commit | 518039bc24cbb9ce34665814fe120eac50bedd9a (patch) | |
| tree | 6b089a05025ae224d6636b6dc9d95e7c9e4677eb /arch/blackfin/kernel/irqchip.c | |
| parent | f16295e7e7f2a2a15876f570f10d6dc8f1f36ab8 (diff) | |
| download | linux-518039bc24cbb9ce34665814fe120eac50bedd9a.tar.xz | |
Blackfin arch: Add ability to expend the hardware trace buffer
Add ability to expend the hardware trace buffer via a configurable
software buffer - so you can have lots of history when a crash occurs.
The interesting way we do printk in the traps.c confusese the checking
script
Signed-off-by: Robin Getz <robin.getz@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Diffstat (limited to 'arch/blackfin/kernel/irqchip.c')
| -rw-r--r-- | arch/blackfin/kernel/irqchip.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/irqchip.c b/arch/blackfin/kernel/irqchip.c index 1fc001c7..462ae41 100644 --- a/arch/blackfin/kernel/irqchip.c +++ b/arch/blackfin/kernel/irqchip.c @@ -34,6 +34,7 @@ #include <linux/kallsyms.h> #include <linux/interrupt.h> #include <linux/irq.h> +#include <asm/trace.h> static unsigned long irq_err_count; static spinlock_t irq_controller_lock; @@ -144,4 +145,12 @@ void __init init_IRQ(void) } init_arch_irq(); + +#ifdef CONFIG_DEBUG_BFIN_HWTRACE_EXPAND + /* Now that evt_ivhw is set up, turn this on */ + trace_buff_offset = 0; + bfin_write_TBUFCTL(BFIN_TRACE_ON); + printk(KERN_INFO "Hardware Trace expanded to %ik\n", + 1 << CONFIG_DEBUG_BFIN_HWTRACE_EXPAND_LEN); +#endif } |