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author | Robert Richter <robert.richter@amd.com> | 2011-05-20 09:46:54 +0200 |
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committer | Robert Richter <robert.richter@amd.com> | 2011-05-20 17:11:10 +0200 |
commit | 3d2606f42984613d324ad3047cf503bcddc3880a (patch) | |
tree | 31f471f989e5675b5154d59acaf37259400b6d77 /arch/cris/configs | |
parent | 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf (diff) | |
download | kernel_samsung_smdk4412-3d2606f42984613d324ad3047cf503bcddc3880a.zip kernel_samsung_smdk4412-3d2606f42984613d324ad3047cf503bcddc3880a.tar.gz kernel_samsung_smdk4412-3d2606f42984613d324ad3047cf503bcddc3880a.tar.bz2 |
oprofile, x86: Enable preemption during pci device setup in IBS init
IBS initialization is a mix of per-core register access and per-node
pci device setup. Register access should be pinned to the cpu, but pci
setup must run with preemption enabled.
This patch better separates the code into non-/preemptible sections
and fixes sleeping with preemption disabled. See bug message below.
Fixes also freeing the eilvt entry by introducing put_eilvt().
BUG: sleeping function called from invalid context at mm/slub.c:824
in_atomic(): 1, irqs_disabled(): 0, pid: 32357, name: modprobe
INFO: lockdep is turned off.
Pid: 32357, comm: modprobe Not tainted 2.6.39-rc7+ #14
Call Trace:
[<ffffffff8104bdc8>] __might_sleep+0x112/0x117
[<ffffffff81129693>] kmem_cache_alloc_trace+0x4b/0xe7
[<ffffffff81278f14>] kzalloc.constprop.0+0x29/0x2b
[<ffffffff81278f4c>] pci_get_subsys+0x36/0x78
[<ffffffff81022689>] ? setup_APIC_eilvt+0xfb/0x139
[<ffffffff81278fa4>] pci_get_device+0x16/0x18
[<ffffffffa06c8b5d>] op_amd_init+0xd3/0x211 [oprofile]
[<ffffffffa064d000>] ? 0xffffffffa064cfff
[<ffffffffa064d298>] op_nmi_init+0x21e/0x26a [oprofile]
[<ffffffffa064d062>] oprofile_arch_init+0xe/0x26 [oprofile]
[<ffffffffa064d010>] oprofile_init+0x10/0x42 [oprofile]
[<ffffffff81002099>] do_one_initcall+0x7f/0x13a
[<ffffffff81096524>] sys_init_module+0x132/0x281
[<ffffffff814cc682>] system_call_fastpath+0x16/0x1b
Reported-by: Dave Jones <davej@redhat.com>
Cc: <stable@kernel.org> [2.6.37.x]
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/cris/configs')
0 files changed, 0 insertions, 0 deletions