When checking driver-core tree, found crazying warnings on my setups.
[ 216.025849] calling acpi_processor_init+0x0/0x81 @ 1
[ 216.045332] ACPI: Requesting acpi_cpufreq
[ 216.047454] Monitor-Mwait will be used to enter C-1 state
[ 216.047912] Monitor-Mwait will be used to enter C-3 state
[ 216.065270] ACPI: acpi_idle registered with cpuidle
[ 216.068241] kobject (ffff8870364a1940): tried to init an initialized object, something is seriously wrong.
[ 216.085287] Pid: 1, comm: swapper/0 Not tainted 3.3.0-rc2-tip-yh-02428-ge663840-dirty #247
[ 216.105041] Call Trace:
[ 216.105192] [<ffffffff813a9c06>] kobject_init+0x33/0x83
[ 216.124880] [<ffffffff813aa1f8>] kobject_init_and_add+0x23/0x57
[ 216.125158] [<ffffffff819f3a08>] cpuidle_add_sysfs+0x49/0x62
[ 216.144850] [<ffffffff819f2a28>] __cpuidle_register_device+0xe6/0x10e
[ 216.145182] [<ffffffff819f2ea4>] cpuidle_register_device+0x25/0x4d
[ 216.164912] [<ffffffff81cb5774>] acpi_processor_power_init+0x13e/0x16c
[ 216.165205] [<ffffffff81427620>] ? acpi_processor_get_throttling_info+0x128/0x158
[ 216.185012] [<ffffffff81c68ae5>] acpi_processor_start+0x62/0x11d
[ 216.204861] [<ffffffff81cb55ff>] acpi_processor_add+0x1b0/0x1e7
[ 216.205144] [<ffffffff81402a7e>] acpi_device_probe+0x4e/0x11c
[ 216.225063] [<ffffffff8148f0e7>] really_probe+0x99/0x126
[ 216.225328] [<ffffffff8148f2a3>] driver_probe_device+0x3b/0x56
[ 216.244846] [<ffffffff8148f31d>] __driver_attach+0x5f/0x82
[ 216.245101] [<ffffffff8148f2be>] ? driver_probe_device+0x56/0x56
[ 216.264668] [<ffffffff8148db80>] bus_for_each_dev+0x5c/0x88
[ 216.264942] [<ffffffff8148eea7>] driver_attach+0x1e/0x20
[ 216.284639] [<ffffffff8148eaec>] bus_add_driver+0xca/0x21d
[ 216.284903] [<ffffffff81095827>] ? local_clock+0xf/0x3c
[ 216.304580] [<ffffffff82814177>] ? acpi_fan_init+0x18/0x18
[ 216.304849] [<ffffffff8148f79b>] driver_register+0x91/0xfe
[ 216.324545] [<ffffffff82814177>] ? acpi_fan_init+0x18/0x18
[ 216.324813] [<ffffffff81403705>] acpi_bus_register_driver+0x43/0x45
[ 216.344563] [<ffffffff828141a7>] acpi_processor_init+0x30/0x81
[ 216.344845] [<ffffffff82814177>] ? acpi_fan_init+0x18/0x18
[ 216.364590] [<ffffffff810001e7>] do_one_initcall+0x57/0x134
[ 216.364868] [<ffffffff827e6f8c>] kernel_init+0x146/0x1c0
[ 216.384512] [<ffffffff81d03aa4>] kernel_thread_helper+0x4/0x10
[ 216.384819] [<ffffffff81cfbb5d>] ? retint_restore_args+0xe/0xe
[ 216.404578] [<ffffffff827e6e46>] ? start_kernel+0x3ab/0x3ab
[ 216.424530] [<ffffffff81d03aa0>] ? gs_change+0xb/0xb
[ 216.424793] ------------[ cut here ]------------
[ 216.425038] WARNING: at fs/sysfs/dir.c:502 sysfs_add_one+0x97/0xab()
[ 216.444480] Hardware name: Sun Fire X4800
[ 216.444668] sysfs: cannot create duplicate filename '/devices/system/cpu/cpu0/cpuidle'
...
It turns out acpi_processor_power_init() get called two time in acpi_processor_add and acpi_processor_start.
Found several lines are duplicated in those two functions even related commit move them.
The related patches are ok. Not sure how it could happen, looks like git problem.
-v2: add back acpi_processor_load_module(pr) to acpi_processor_load_start
Signed-off-by: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/processor_driver.c | 18 +-----------------
1 file changed, 1 insertion(+), 17 deletions(-)
Index: linux-2.6/drivers/acpi/processor_driver.c
===================================================================
--- linux-2.6.orig/drivers/acpi/processor_driver.c
+++ linux-2.6/drivers/acpi/processor_driver.c
@@ -474,6 +474,7 @@ static __ref int acpi_processor_start(st
#ifdef CONFIG_CPU_FREQ
acpi_processor_ppc_has_changed(pr, 0);
+ acpi_processor_load_module(pr);
#endif
acpi_processor_get_throttling_info(pr);
acpi_processor_get_limit_info(pr);
@@ -579,23 +580,6 @@ static int __cpuinit acpi_processor_add(
goto err_free_cpumask;
}
-#ifdef CONFIG_CPU_FREQ
- acpi_processor_ppc_has_changed(pr, 0);
- acpi_processor_load_module(pr);
-#endif
- acpi_processor_get_throttling_info(pr);
- acpi_processor_get_limit_info(pr);
-
- if (!cpuidle_get_driver() || cpuidle_get_driver() == &acpi_idle_driver)
- acpi_processor_power_init(pr, device);
-
- pr->cdev = thermal_cooling_device_register("Processor", device,
- &processor_cooling_ops);
- if (IS_ERR(pr->cdev)) {
- result = PTR_ERR(pr->cdev);
- goto err_remove_sysfs;
- }
-
/*
* Do not start hotplugged CPUs now, but when they
* are onlined the first time
--
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