Messages in this thread | | | From | "Jakub W. Jozwicki" <> | Subject | Re: [PATCH 2.6.25.10] pm_qos_params: change spinlock to rwlock | Date | Sun, 13 Jul 2008 15:05:25 +0200 |
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Sunday, 13 of July 2008 10:28:16 Andrew Morton napisał(a): > On Sun, 13 Jul 2008 01:19:19 +0200 "Jakub W. Jozwicki" <jozwicki@aster.pl> wrote: > > Concurrent calls to pm_qos_requirement shouldn't block each other. This > > patch changes spinlock to rwlock and fixes issues with PREEMPT_RT. > > "fixes issues" is nowhere near an adequate description. > > Please provide complete descriptions for kernel patches. That includes > describing the mysterious "issue" in full! > > Thanks.
[ 114.647010] BUG: sleeping function called from invalid context swapper(0) at kernel/rtmutex.c:742 [ 114.647010] in_atomic():1 [00000001], irqs_disabled():0 [ 114.647010] Pid: 0, comm: swapper Not tainted 2.6.25.10-rtXXX #10 [ 114.647010] [<c0120fc4>] __might_sleep+0xf1/0xf8 [ 114.647010] [<c045499c>] __rt_spin_lock+0x24/0x61 [ 114.647010] [<c04549e1>] rt_spin_lock+0x8/0xa [ 114.647010] [<c013ec8d>] pm_qos_requirement+0x10/0x29 [ 114.647010] [<c038ef36>] menu_select+0x5d/0x7f [ 114.647010] [<c038e4d8>] cpuidle_idle_call+0x47/0x9b [ 114.647010] [<c038e491>] ? cpuidle_idle_call+0x0/0x9b [ 114.647010] [<c01060ff>] cpu_idle+0xaf/0x106 [ 114.647010] [<c0441c87>] rest_init+0x67/0x69 [ 114.647010] ======================= [ 115.649517] BUG: sleeping function called from invalid context swapper(0) at kernel/rtmutex.c:742 [ 115.649517] in_atomic():1 [00000001], irqs_disabled():0 [ 115.649517] Pid: 0, comm: swapper Not tainted 2.6.25.10-rtXXX #10 [ 115.649517] [<c0120fc4>] __might_sleep+0xf1/0xf8 [ 115.649517] [<c045499c>] __rt_spin_lock+0x24/0x61 [ 115.649517] [<c04549e1>] rt_spin_lock+0x8/0xa [ 115.649517] [<c013ec8d>] pm_qos_requirement+0x10/0x29 [ 115.649517] [<c038ef36>] menu_select+0x5d/0x7f [ 115.649517] [<c038e4d8>] cpuidle_idle_call+0x47/0x9b [ 115.649517] [<c038e491>] ? cpuidle_idle_call+0x0/0x9b [ 115.649517] [<c01060ff>] cpu_idle+0xaf/0x106 [ 115.649517] [<c0441c87>] rest_init+0x67/0x69 [ 115.649517] ======================= [ 116.650040] BUG: sleeping function called from invalid context swapper(0) at kernel/rtmutex.c:742 [ 116.650040] in_atomic():1 [00000001], irqs_disabled():0 [ 116.650040] Pid: 0, comm: swapper Not tainted 2.6.25.10-rtXXX #10 [ 116.650040] [<c0120fc4>] __might_sleep+0xf1/0xf8 [ 116.650040] [<c045499c>] __rt_spin_lock+0x24/0x61 [ 116.650040] [<c04549e1>] rt_spin_lock+0x8/0xa [ 116.650040] [<c013ec8d>] pm_qos_requirement+0x10/0x29 [ 116.650040] [<c038ef36>] menu_select+0x5d/0x7f [ 116.650040] [<c038e4d8>] cpuidle_idle_call+0x47/0x9b [ 116.650040] [<c038e491>] ? cpuidle_idle_call+0x0/0x9b [ 116.650040] [<c01060ff>] cpu_idle+0xaf/0x106 [ 116.650040] [<c0441c87>] rest_init+0x67/0x69 [ 116.650040] =======================
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