From: Alexandre Belloni <alexandre.belloni@free-electrons.com>
To: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>,
Nicolas Ferre <nicolas.ferre@atmel.com>,
Boris Brezillon <boris.brezillon@free-electrons.com>,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org,
David Dueck <davidcdueck@googlemail.com>
Subject: Re: [PATCH 1/3] clocksource: atmel-st: Remove irq handler when clock event is unused
Date: Mon, 20 Jul 2015 21:37:26 +0200 [thread overview]
Message-ID: <20150720193726.GJ15539@piout.net> (raw)
In-Reply-To: <alpine.DEB.2.11.1507201103550.18576@nanos>
On 20/07/2015 at 11:04:30 +0200, Thomas Gleixner wrote :
> That's why I used setup/remove_irq() in the stale RT changes.
>
Hum, actually, you hit the same thing with setup/remove_irq (and I'm not sure
to follow why):
BUG: sleeping function called from invalid context at mm/slab.c:2863
in_atomic(): 1, irqs_disabled(): 128, pid: 596, name: sh
CPU: 0 PID: 596 Comm: sh Tainted: G W 4.1.0-rc4+ #122
Hardware name: Atmel AT91RM9200
[<c000ebd4>] (unwind_backtrace) from [<c000ca64>] (show_stack+0x10/0x14)
[<c000ca64>] (show_stack) from [<c008a0c8>] (__kmalloc+0x38/0x104)
[<c008a0c8>] (__kmalloc) from [<c00d8770>] (__proc_create+0x11c/0x194)
[<c00d8770>] (__proc_create) from [<c00d8b44>] (proc_mkdir_data+0x30/0x9c)
[<c00d8b44>] (proc_mkdir_data) from [<c0042a00>] (register_handler_proc+0xfc/0x10c)
[<c0042a00>] (register_handler_proc) from [<c003f0b0>] (__setup_irq+0x438/0x518)
[<c003f0b0>] (__setup_irq) from [<c003f1e8>] (setup_irq+0x58/0x84)
[<c003f1e8>] (setup_irq) from [<c02de298>] (atmel_st_request_irq+0x4c/0x84)
[<c02de298>] (atmel_st_request_irq) from [<c02de338>] (clkevt32k_set_periodic+0x14/0x54)
[<c02de338>] (clkevt32k_set_periodic) from [<c00509a0>] (clockevents_switch_state+0x1c/0x58)
[<c00509a0>] (clockevents_switch_state) from [<c0050584>] (__clockevents_unbind+0xb8/0xfc)
[<c0050584>] (__clockevents_unbind) from [<c0054954>] (smp_call_function_single+0x34/0x44)
[<c0054954>] (smp_call_function_single) from [<c00506b0>] (sysfs_unbind_tick_dev+0xe8/0x114)
[<c00506b0>] (sysfs_unbind_tick_dev) from [<c00e1748>] (kernfs_fop_write+0x118/0x174)
[<c00e1748>] (kernfs_fop_write) from [<c008df00>] (__vfs_write+0x24/0xdc)
[<c008df00>] (__vfs_write) from [<c008e5f8>] (vfs_write+0xa4/0x128)
[<c008e5f8>] (vfs_write) from [<c008ecf4>] (SyS_write+0x40/0x78)
[<c008ecf4>] (SyS_write) from [<c000a240>] (ret_fast_syscall+0x0/0x30)
--
Alexandre Belloni, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
next prev parent reply other threads:[~2015-07-20 19:37 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-17 19:33 [PATCH 0/3] clocksource: at91: Remove irq handler when clock event is unused Alexandre Belloni
2015-07-17 19:33 ` [PATCH 1/3] clocksource: atmel-st: " Alexandre Belloni
2015-07-18 8:12 ` Thomas Gleixner
2015-07-18 22:23 ` Alexandre Belloni
2015-07-20 9:04 ` Thomas Gleixner
2015-07-20 19:37 ` Alexandre Belloni [this message]
2015-07-20 20:46 ` Thomas Gleixner
2015-08-02 9:10 ` Thomas Gleixner
2015-08-02 9:40 ` Peter Zijlstra
2015-08-03 13:30 ` Boris Brezillon
2015-08-03 14:36 ` Thomas Gleixner
2015-08-03 20:07 ` Boris Brezillon
2015-07-17 19:33 ` [PATCH 2/3] clocksource: atmel-pit: drop at91sam926x_pit_common_init Alexandre Belloni
2015-07-17 19:33 ` [PATCH 3/3] clocksource: atmel-pit: Remove irq handler when clock event is unused Alexandre Belloni
2015-07-18 8:20 ` Thomas Gleixner
2015-07-18 22:18 ` Alexandre Belloni
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