3 messages, 1 author, 2013-03-08 · open the first message on its own page
From: Vineeth <hidden>
Date: 2013-01-30 02:20:09
Hi, I've added a VDSO patch on my 2.6.32 kernel. When i enabled PREMPT_RT i am getting the below oops messages. What is the reason for this ? When googled, it was mentioned in many places that it is caused by the get_cpu()/put_cpu() preempt disabled region. Can someone help me to understand this ? Thanks
From: Vineeth <hidden>
Date: 2013-01-30 02:29:39
Hi, I've added a VDSO patch on my 2.6.32 kernel. When i enabled PREMPT_RT i am getting the below oops messages. What is the reason for this ? When googled, it was mentioned in many places that it is caused by the get_cpu()/put_cpu() preempt disabled region. Can someone help me to understand this ? BUG: sleeping function called from invalid context at kernel/rtmutex.c:684 pcnt: 10002 0 in_atomic(): 1, irqs_disabled(): 1, pid: 0, name: swapper Call Trace: [c0771d40] [c000750c] show_stack+0x44/0x160 (unreliable) [c0771d70] [c0021114] __might_sleep+0xe4/0x108 [c0771d80] [c05700bc] rt_spin_lock+0x38/0xb4 [c0771d90] [c005a3b0] ntp_tick_length+0x20/0x54 [c0771db0] [c00594e8] update_wall_time+0xb0/0xa3c [c0771e20] [c0040bc0] do_timer+0x38/0x4c [c0771e30] [c005f2c4] tick_do_update_jiffies64+0x1cc/0x2a8 [c0771e70] [c005f494] tick_check_idle+0xf4/0x120 [c0771ea0] [c0039a50] irq_enter+0x68/0x7c [c0771eb0] [c000ae78] timer_interrupt+0xb0/0x168 [c0771ed0] [c000e84c] ret_from_except+0x0/0x18 [c0771f90] [c000874c] cpu_idle+0x58/0xf4 [c0771fb0] [c0002330] rest_init+0xa0/0xb0 [c0771fc0] [c06fc9d4] start_kernel+0x320/0x334 [c0771ff0] [c00003f0] skpinv+0x308/0x344 Thanks
From: vneethv <hidden>
Date: 2013-03-08 07:05:32
huh..My VDSO patch was not the culprit..! the issue was with spin_lock_irqsave calls...! modify the same to raw_spin_lock_irqsave..problem solved..! the rtpatch was not applied properly. -- View this message in context: http://linuxppc.10917.n7.nabble.com/PREMPT-RT-tp68107p69101.html Sent from the linuxppc-dev mailing list archive at Nabble.com.