| From: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| Date: Thu, 23 Jan 2014 14:45:59 +0100 |
| Subject: leds: trigger: disable CPU trigger on -RT |
| |
| as it triggers: |
| |CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141 |
| |[<c0014aa4>] (unwind_backtrace+0x0/0xf8) from [<c0012788>] (show_stack+0x1c/0x20) |
| |[<c0012788>] (show_stack+0x1c/0x20) from [<c043c8dc>] (dump_stack+0x20/0x2c) |
| |[<c043c8dc>] (dump_stack+0x20/0x2c) from [<c004c5e8>] (__might_sleep+0x13c/0x170) |
| |[<c004c5e8>] (__might_sleep+0x13c/0x170) from [<c043f270>] (__rt_spin_lock+0x28/0x38) |
| |[<c043f270>] (__rt_spin_lock+0x28/0x38) from [<c043fa00>] (rt_read_lock+0x68/0x7c) |
| |[<c043fa00>] (rt_read_lock+0x68/0x7c) from [<c036cf74>] (led_trigger_event+0x2c/0x5c) |
| |[<c036cf74>] (led_trigger_event+0x2c/0x5c) from [<c036e0bc>] (ledtrig_cpu+0x54/0x5c) |
| |[<c036e0bc>] (ledtrig_cpu+0x54/0x5c) from [<c000ffd8>] (arch_cpu_idle_exit+0x18/0x1c) |
| |[<c000ffd8>] (arch_cpu_idle_exit+0x18/0x1c) from [<c00590b8>] (cpu_startup_entry+0xa8/0x234) |
| |[<c00590b8>] (cpu_startup_entry+0xa8/0x234) from [<c043b2cc>] (rest_init+0xb8/0xe0) |
| |[<c043b2cc>] (rest_init+0xb8/0xe0) from [<c061ebe0>] (start_kernel+0x2c4/0x380) |
| |
| |
| Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> |
| --- |
| drivers/leds/trigger/Kconfig | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/drivers/leds/trigger/Kconfig |
| +++ b/drivers/leds/trigger/Kconfig |
| @@ -69,7 +69,7 @@ config LEDS_TRIGGER_BACKLIGHT |
| |
| config LEDS_TRIGGER_CPU |
| bool "LED CPU Trigger" |
| - depends on LEDS_TRIGGERS |
| + depends on LEDS_TRIGGERS && !PREEMPT_RT_BASE |
| help |
| This allows LEDs to be controlled by active CPUs. This shows |
| the active CPUs across an array of LEDs so you can see which |