From: Allen Pais <allen.pais@oracle.com>
To: Kirill Tkhai <tkhai@yandex.ru>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"sparclinux@vger.kernel.org" <sparclinux@vger.kernel.org>,
"davem@davemloft.net" <davem@davemloft.net>,
"bigeasy@linutronix.de" <bigeasy@linutronix.de>
Subject: Re: [PATCH 3/4] sparc64: convert spinlock_t to raw_spinlock_t in mmu_context_t
Date: Wed, 12 Feb 2014 13:01:52 +0530 [thread overview]
Message-ID: <52FB2368.4060406@oracle.com> (raw)
In-Reply-To: <341392153219@web17g.yandex.ru>
On Wednesday 12 February 2014 02:43 AM, Kirill Tkhai wrote:
>
>
> 06.01.2014, 07:56, "Allen Pais" <allen.pais@oracle.com>:
>> In the attempt of get PREEMPT_RT working on sparc64 using
>> linux-stable-rt version 3.10.22-rt19+, the kernel crash
>> with the following trace:
>>
>> [ 1487.027884] I7: <rt_mutex_setprio+0x3c/0x2c0>
>> [ 1487.027885] Call Trace:
>> [ 1487.027887] [00000000004967dc] rt_mutex_setprio+0x3c/0x2c0
>> [ 1487.027892] [00000000004afe20] task_blocks_on_rt_mutex+0x180/0x200
>> [ 1487.027895] [0000000000819114] rt_spin_lock_slowlock+0x94/0x300
>> [ 1487.027897] [0000000000817ebc] __schedule+0x39c/0x53c
>> [ 1487.027899] [00000000008185fc] schedule+0x1c/0xc0
>> [ 1487.027908] [000000000048fff4] smpboot_thread_fn+0x154/0x2e0
>> [ 1487.027913] [000000000048753c] kthread+0x7c/0xa0
>> [ 1487.027920] [00000000004060c4] ret_from_syscall+0x1c/0x2c
>> [ 1487.027922] [0000000000000000] (null)
>> - spin_unlock_irqrestore(&mm->context.lock, flags);
>> + raw_spin_unlock_irqrestore(&mm->context.lock, flags);
>> }
>
> We also should do the same in update_mmu_cache_pmd().
>
I have already done this. I should have updated the patch. the issue still
persists though.
- Allen
next prev parent reply other threads:[~2014-02-12 7:32 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-06 3:55 [PATCH 0/4] PREEMPT_RT support for sparc64 Allen Pais
2014-01-06 3:55 ` [PATCH 1/4] sparc64: use generic rwsem spinlocks rt Allen Pais
2014-01-06 3:55 ` [PATCH 2/4] sparc64: allow forced irq threading Allen Pais
2014-01-06 3:55 ` [PATCH 3/4] sparc64: convert spinlock_t to raw_spinlock_t in mmu_context_t Allen Pais
2014-02-11 21:13 ` Kirill Tkhai
2014-02-12 7:31 ` Allen Pais [this message]
2014-01-06 3:55 ` [PATCH 4/4] sparc64: convert ctx_alloc_lock raw_spinlock_t Allen Pais
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