edac: edac_mc no longer deals with kobjects directly

There are no more embedded kobjects in struct mem_ctl_info. Remove a header and
a comment that does not reflect the code anymore.

Signed-off-by: Shaun Ruffell <sruffell@digium.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
sb_edac: add a missing /n on a debug message

[   17.024963] EDAC DEBUG: get_memory_layout: TOHM: 132.160 GB (0x0000002043ffffff)<7>[   17.024971] EDAC DEBUG: get_memory_layout: SAD#0 DRAM up to 33.792 GB (0x0000000840000000) Interleave: 8:6 reg=0x000083c3

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
i7core_edac: fix erroneous size of static array

Remove size from lookup arrays and mark them as const.

Reviewed-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Niklas Söderlund <niso@kth.se>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
i7core_edac: fix kernel crash on unloading i7core_edac.

It is easy to trigger this crash on 3.7.0:

root@intel_westmere_ep-3:~# modprobe -r i7core_edac
EDAC PCI: Removed device 0 for i7core_edac EDAC PCI controller: DEV 0000:fe:03.0
EDAC MC: Removed device 1 for i7core_edac.c i7 core #1: DEV 0000:fe:03.0
EDAC PCI: Removed device 1 for i7core_edac EDAC PCI controller: DEV 0000:ff:03.0
EDAC MC: Removed device 0 for i7core_edac.c i7 core #0: DEV 0000:ff:03.0
BUG: unable to handle kernel NULL pointer dereference at 0000000000000110
IP: [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
PGD 1eaae7067 PUD 1e96e4067 PMD 0
Oops: 0000 [#1] PREEMPT SMP
Modules linked in: minix acpi_cpufreq freq_table mperf ioatdma processor edac_core(-) iTCO_wdt coretemp evdev hwmon lpc_ich dca mfd_core crc32c_intel ioapic [last unloaded: i7core_edac]
CPU 3
Pid: 1268, comm: modprobe Not tainted 3.7.0-WR5.0.1.0_standard+ #30 Intel Corporation S5520HC/S5520HC
RIP: 0010:[<ffffffff82069ee9>]  [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
RSP: 0018:ffff8801eb12de28  EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000000000f0 RCX: 00000000ffffffff
RDX: ffff88012b452800 RSI: 0000000000000002 RDI: 00000000000000f0
RBP: ffff8801eb12de68 R08: 0000000000000000 R09: ffffea0004ad1118
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801eb12dee8 R14: ffff88012b452800 R15: 000000000060e518
FS:  00007f9ea95a9700(0000) GS:ffff8801efc20000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000110 CR3: 00000001262f1000 CR4: 00000000000007e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process modprobe (pid: 1268, threadinfo ffff8801eb12c000, task ffff8801e8421690)
Stack:
  ffff88012c802a00 ffff88012b445ec0 ffff88012c802300 ffff88012b452800
  0000000000000000 ffff8801eb12dee8 000000000060e080 000000000060e518
  ffff8801eb12de78 ffffffff82069f56 ffff8801eb12dea8 ffffffff824ead7c
Call Trace:
  [<ffffffff82069f56>] blocking_notifier_call_chain+0x16/0x20
  [<ffffffff824ead7c>] device_del+0x3c/0x1d0
  [<ffffffffa00095a8>] edac_mc_sysfs_exit+0x1c/0x2f [edac_core]
  [<ffffffffa000961c>] edac_exit+0x4f/0x56 [edac_core]
  [<ffffffff820a3d2a>] sys_delete_module+0x17a/0x240
  [<ffffffff8212da7c>] ? vm_munmap+0x5c/0x80
  [<ffffffff82877682>] system_call_fastpath+0x16/0x1b
Code: 90 90 55 48 89 e5 48 83 ec 40 48 89 5d d8 4c 89 65 e0 4c 89 6d e8 4c 89 75 f0 4c 89 7d f8 66 66 66 66 90 31 c0 49 89 d6 48 89 fb <48> 8b 57 20 49 89 f5 41 89 cf 4c 8d 67 20 48 85 d2 74 2c 4c 89
RIP  [<ffffffff82069ee9>] __blocking_notifier_call_chain+0x29/0x80
  RSP <ffff8801eb12de28>
CR2: 0000000000000110
---[ end trace b69acf12ccad1c0d ]---

Usually, edac_subsys is grabbed one time by pci at initialization.
But edac_subsys may be released several times if multiple pci MCs exist.
The fix just makes the operations balanced.

Signed-off-by: Lans Zhang <jia.zhang@windriver.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Introduce THERMAL_TREND_RAISE_FULL and THERMAL_TREND_DROP_FULL

These two new thermal_trend types are used to tell the governor
that the temeprature is raising/dropping quickly.

Thermal cooling governors should handle this situation and make
proper decisions, e.g. set cooling state to upper/lower limit directly
instead of one step each time.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Introduce THERMAL_TREND_RAISE/DROP_FULL support for step_wise governor

step_wise governor should set the device cooling state to
upper/lower limit directly when THERMAL_TREND_RAISE/DROP_FULL.

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
step_wise: Unify the code for both throttle and dethrottle

Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Thermal: exynos: Add sysfs node supporting exynos's emulation mode.

This patch supports exynos's emulation mode with newly created sysfs node.
Exynos 4x12 (4212, 4412) and 5 series provide emulation mode for thermal
management unit. Thermal emulation mode supports software debug for TMU's
operation. User can set temperature manually with software code and TMU
will read current temperature from user value not from sensor's value.
This patch includes also documentary placed under Documentation/thermal/.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal: rcar: add .get_trip_type/temp and .notify support

This patch adds .get_trip_type(), .get_trip_temp(), and .notify()
on rcar_thermal_zone_ops.
Driver will try platform power OFF if it reached to
critical temperature.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
drivers/thermal/spear_thermal.c: use devm_clk_get

devm_clk_get allocates a resource that is released when a driver detaches.
This patch uses devm_clk_get for data that is allocated in the probe
function of a platform device and is only released in the remove function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal: exynos: Use of_match_ptr() macro

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal: db8500: Use of_match_ptr() macro in db8500_thermal.c

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Hongbo Zhang <hongbo.zhang@stericsson.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
thermal: db8500: Use of_match_ptr() macro in db8500_cpufreq_cooling.c

This eliminates having an #ifdef returning NULL for the case
when OF is disabled.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Reviewed-by: Hongbo Zhang <hongbo.zhang@stericsson.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
block: delete super ancient PC-XT driver for 1980's hardware

This driver was for the 8 bit ISA cards that were installed in
the PC-XT machines of 1980 vintage.  They supported the dual
ribbon cable MFM drives of 10-20MB capacity, and ran at a 3:1
interleave, giving performance on the order of 128kB/s.

By the introduction of the PC-AT (286) these controllers were
already scrapped in favour of 16 bit controllers with some onboard
RAM that could support a 1:1 interleave.

The git history doesn't show any evidence of runtime fixes that
would reflect active usage; instead just the usual tree-wide API
type changes/cleanups.  Going back to in-source changelogs, the
last "runtime" fix that is evident is something I did over a
dozen years ago[1] -- and even back then, the hardware was long
since unavailable, so that ancient fix was also not runtime tested.

The time is long overdue for this to get flushed, so lets get
rid of it before anyone wastes more time doing builds and sparse
checks etc. on long since dead code.

[1] http://lkml.indiana.edu/hypermail/linux/kernel/0102.2/0027.html

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
cfq-iosched: Properly name all references to IO class

Currently CFQ has three IO classes, RT, BE and IDLE. At many a places we
are calling workloads belonging to these classes as "prio". This gets
very confusing as one starts to associate it with ioprio.

So this patch just does bunch of renaming so that reading code becomes
easier. All reference to RT, BE and IDLE workload are done using keyword
"class" and all references to subclass, SYNC, SYNC-IDLE, ASYNC are made
using keyword "type".

This makes me feel much better while I am reading the code. There is no
functionality change due to this patch.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
cfq-iosched: More renaming to better represent wl_class and wl_type

Some more renaming. Again making the code uniform w.r.t use of
wl_class/class to represent IO class (RT, BE, IDLE) and using
wl_type/type to represent subclass (SYNC, SYNC-IDLE, ASYNC).

At places this patch shortens the string "workload" to "wl".
Renamed "saved_workload" to "saved_wl_type". Renamed
"saved_serving_class" to "saved_wl_class".

For uniformity with "saved_wl_*" variables, renamed "serving_class"
to "serving_wl_class" and renamed "serving_type" to "serving_wl_type".

Again, just trying to improve upon code uniformity and improve
readability. No functional change.

v2:
- Restored the usage of keyword "service" based on Jeff Moyer's feedback.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
cfq-iosched: Rename "service_tree" to "st" at some places

At quite a few places we use the keyword "service_tree". At some places,
especially local variables, I have abbreviated it to "st".

Also at couple of places moved binary operator "+" from beginning of line
to end of previous line, as per Tejun's feedback.

v2:
 Reverted most of the service tree name change based on Jeff Moyer's feedback.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
cfq-iosched: Rename few functions related to selecting workload

choose_service_tree() selects/sets both wl_class and wl_type.  Rename it to
choose_wl_class_and_type() to make it very clear.

cfq_choose_wl() only selects and sets wl_type. It is easy to confuse
it with choose_st(). So rename it to cfq_choose_wl_type() to make
it clear what does it do.

Just renaming. No functionality change.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
cfq-iosched: Get rid of unnecessary local variable

Use of local varibale "n" seems to be unnecessary. Remove it. This brings
it inline with function __cfq_group_st_add(), which is also doing the
similar operation of adding a group to a rb tree.

No functionality change here.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
cfq-iosched: Print sync-noidle information in blktrace messages

Currently we attach a character "S" or "A" to the cfqq<pid>, to represent
whether queues is sync or async. Add one more character "N" to represent
whether it is sync-noidle queue or sync queue. So now three different
type of queues will look as follows.

cfq1234S   --> sync queus
cfq1234SN  --> sync noidle queue
cfq1234A   --> Async queue

Previously S/A classification was being printed only if group scheduling
was enabled. This patch also makes sure that this classification is
displayed even if group idling is disabled.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Acked-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>