42 lines
1.9 KiB
Diff
42 lines
1.9 KiB
Diff
From 81f4ffcdae05eb7da91f27b342f2c49422f484d3 Mon Sep 17 00:00:00 2001
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From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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Date: Thu, 23 Jan 2014 14:45:59 +0100
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Subject: [PATCH 306/365] leds: trigger: disable CPU trigger on -RT
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as it triggers:
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|CPU: 0 PID: 0 Comm: swapper Not tainted 3.12.8-rt10 #141
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|[<c0014aa4>] (unwind_backtrace+0x0/0xf8) from [<c0012788>] (show_stack+0x1c/0x20)
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|[<c0012788>] (show_stack+0x1c/0x20) from [<c043c8dc>] (dump_stack+0x20/0x2c)
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|[<c043c8dc>] (dump_stack+0x20/0x2c) from [<c004c5e8>] (__might_sleep+0x13c/0x170)
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|[<c004c5e8>] (__might_sleep+0x13c/0x170) from [<c043f270>] (__rt_spin_lock+0x28/0x38)
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|[<c043f270>] (__rt_spin_lock+0x28/0x38) from [<c043fa00>] (rt_read_lock+0x68/0x7c)
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|[<c043fa00>] (rt_read_lock+0x68/0x7c) from [<c036cf74>] (led_trigger_event+0x2c/0x5c)
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|[<c036cf74>] (led_trigger_event+0x2c/0x5c) from [<c036e0bc>] (ledtrig_cpu+0x54/0x5c)
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|[<c036e0bc>] (ledtrig_cpu+0x54/0x5c) from [<c000ffd8>] (arch_cpu_idle_exit+0x18/0x1c)
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|[<c000ffd8>] (arch_cpu_idle_exit+0x18/0x1c) from [<c00590b8>] (cpu_startup_entry+0xa8/0x234)
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|[<c00590b8>] (cpu_startup_entry+0xa8/0x234) from [<c043b2cc>] (rest_init+0xb8/0xe0)
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|[<c043b2cc>] (rest_init+0xb8/0xe0) from [<c061ebe0>] (start_kernel+0x2c4/0x380)
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Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
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---
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drivers/leds/trigger/Kconfig | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/drivers/leds/trigger/Kconfig b/drivers/leds/trigger/Kconfig
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index d5e4ba3303c1..6c3a40922bfe 100644
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--- a/drivers/leds/trigger/Kconfig
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+++ b/drivers/leds/trigger/Kconfig
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@@ -69,7 +69,7 @@ config LEDS_TRIGGER_BACKLIGHT
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config LEDS_TRIGGER_CPU
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bool "LED CPU Trigger"
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- depends on LEDS_TRIGGERS
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+ depends on LEDS_TRIGGERS && !PREEMPT_RT_BASE
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help
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This allows LEDs to be controlled by active CPUs. This shows
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the active CPUs across an array of LEDs so you can see which
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--
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2.28.0
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