linux-toradex.git/arch/arm/kernel, branch tegra Linux kernel for Apalis and Colibri modules arm: smp: sched: clean-up and silence cpu hot-plugging debug 2016-06-22T13:29:36+00:00 Marcel Ziswiler marcel.ziswiler@toradex.com 2016-06-03T07:40:44+00:00 c874ed0f80fc422baa7b4c8905ef8970f6b708e7 Clean-up and silence those annoying CPU hot-plugging debug messages. Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com> Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com> 
Clean-up and silence those annoying CPU hot-plugging debug messages.

Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Acked-by: Dominik Sliwa <dominik.sliwa@toradex.com>
ARM: 8158/1: LLVMLinux: use static inline in ARM ftrace.h 2016-03-21T09:52:19+00:00 Behan Webster behanw@converseincode.com 2014-09-24T00:06:46+00:00 2cce0692e2b2f5a34332d4d105eb7d5a6ddeb4d3 With compilers which follow the C99 standard (like modern versions of gcc and clang), "extern inline" does the wrong thing (emits code for an externally linkable version of the inline function). In this case using static inline and removing the NULL version of return_address in return_address.c does the right thing. Signed-off-by: Behan Webster <behanw@converseincode.com> Reviewed-by: Mark Charlebois <charlebm@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> (cherry picked from commit aeea3592a13bf12861943e44fc48f1f270941f8d) 
With compilers which follow the C99 standard (like modern versions of gcc and
clang), "extern inline" does the wrong thing (emits code for an externally
linkable version of the inline function). In this case using static inline
and removing the NULL version of return_address in return_address.c does
the right thing.

Signed-off-by: Behan Webster <behanw@converseincode.com>
Reviewed-by: Mark Charlebois <charlebm@gmail.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit aeea3592a13bf12861943e44fc48f1f270941f8d)
ARM: 7115/4: move __exception and friends to asm/exception.h 2012-11-26T15:54:33+00:00 Jamie Iles jamie@jamieiles.com 2011-10-08T10:20:42+00:00 b796c0373ef4bb04d166f3d87b7422991fd810cb The definition of __exception_irq_entry for CONFIG_FUNCTION_GRAPH_TRACER=y needs linux/ftrace.h, but this creates a circular dependency with it's current home in asm/system.h. Create asm/exception.h and update all current users. v4: - rebase to rmk/for-next v3: - remove redundant includes of linux/ftrace.h v2: - document the usage restricitions of __exception* Cc: Zoltan Devai <zdevai@gmail.com> Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> 
The definition of __exception_irq_entry for
CONFIG_FUNCTION_GRAPH_TRACER=y needs linux/ftrace.h, but this creates a
circular dependency with it's current home in asm/system.h. Create
asm/exception.h and update all current users.

v4:	- rebase to rmk/for-next
v3:	- remove redundant includes of linux/ftrace.h
v2:	- document the usage restricitions of __exception*

Cc: Zoltan Devai <zdevai@gmail.com>
Signed-off-by: Jamie Iles <jamie@jamieiles.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arm: tegra: Add ATAG_SERIAL parsing 2012-08-04T00:50:07+00:00 Dan Willemsen dwillemsen@nvidia.com 2011-09-15T00:15:50+00:00 18634fbff1f64df29af12a8b2ce335fc27019b27 Bug 973078 Change-Id: I2860402c887db414717ce313101dc09e8b327f99 Signed-off-by: Chinmay Kamat <ckamat@nvidia.com> Reviewed-on: http://git-master/r/108699 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Stephen Warren <swarren@nvidia.com> GVS: Gerrit_Virtual_Submit Tested-by: Nitin Kumbhar <nkumbhar@nvidia.com> Reviewed-by: Dan Willemsen <dwillemsen@nvidia.com> 
Bug 973078

Change-Id: I2860402c887db414717ce313101dc09e8b327f99
Signed-off-by: Chinmay Kamat <ckamat@nvidia.com>
Reviewed-on: http://git-master/r/108699
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Stephen Warren <swarren@nvidia.com>
GVS: Gerrit_Virtual_Submit
Tested-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-by: Dan Willemsen <dwillemsen@nvidia.com>
ARM: 7017/1: Use generic BUG() handler 2012-08-02T01:10:12+00:00 Vishal Singh vissingh@nvidia.com 2012-07-27T06:58:00+00:00 ee9e01c5345ff373fa1f64024dde5f06d80d498f ARM uses its own BUG() handler which makes its output slightly different from other archtectures. One of the problems is that the ARM implementation doesn't report the function with the BUG() in it, but always reports the PC being in __bug(). The generic implementation doesn't have this problem. Currently we get something like: kernel BUG at fs/proc/breakme.c:35! Unable to handle kernel NULL pointer dereference at virtual address 00000000 ... PC is at __bug+0x20/0x2c With this patch it displays: kernel BUG at fs/proc/breakme.c:35! Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP ... PC is at write_breakme+0xd0/0x1b4 This implementation uses an undefined instruction to implement BUG, and sets up a bug table containing the relevant information. Many versions of gcc do not support %c properly for ARM (inserting a # when they shouldn't) so we work around this using distasteful macro magic. v1: Initial version to replace existing ARM BUG() implementation with something more similar to other architectures. v2: Add Thumb support, remove backtrace whitespace output changes. Change to use macros instead of requiring the asm %d flag to work (thanks to Dave Martin <dave.martin@linaro.org>) v3: Remove old BUG() implementation in favor of this one. Remove the Backtrace: message (will submit this separately). Rebase to linux-2.6.git master. v4: Allow BUGS in modules (these were not reported correctly in v3) (thanks to Stephen Boyd <sboyd@codeaurora.org> for suggesting that.) Remove __bug() as this is no longer needed. v5: Add %progbits as the section flags. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Tested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> (cherry picked from commit 87e040b6456fd3416a1f6831c1eedaef5c0a94ff) Change-Id: Ic7692288dff6e4a15c732eb030295bd196a87fb4 Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com> Reviewed-on: http://git-master/r/117356 Reviewed-by: Automatic_Commit_Validation_User Tested-by: Vishal Singh <vissingh@nvidia.com> Reviewed-by: Sandeep Trasi <strasi@nvidia.com> (cherry picked from commit 6708ffd0b44f4d09d8fe745471641545655091fb) Reviewed-on: http://git-master/r/119328 Reviewed-by: Bob Johnston <bjohnston@nvidia.com> Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> 
ARM uses its own BUG() handler which makes its output slightly different
from other archtectures.

One of the problems is that the ARM implementation doesn't report the
function
with the BUG() in it, but always reports the PC being in __bug(). The
generic
implementation doesn't have this problem.

Currently we get something like:

kernel BUG at fs/proc/breakme.c:35!
Unable to handle kernel NULL pointer dereference at virtual address
00000000
...
PC is at __bug+0x20/0x2c

With this patch it displays:

kernel BUG at fs/proc/breakme.c:35!
Internal error: Oops - undefined instruction: 0 [#1] PREEMPT SMP
...
PC is at write_breakme+0xd0/0x1b4

This implementation uses an undefined instruction to implement BUG, and
sets up
a bug table containing the relevant information. Many versions of gcc do
not
support %c properly for ARM (inserting a # when they shouldn't) so we
work
around this using distasteful macro magic.

v1: Initial version to replace existing ARM BUG() implementation with
something
more similar to other architectures.

v2: Add Thumb support, remove backtrace whitespace output changes.
Change to
use macros instead of requiring the asm %d flag to work (thanks to
Dave Martin <dave.martin@linaro.org>)

v3: Remove old BUG() implementation in favor of this one.
Remove the Backtrace: message (will submit this separately).
Rebase to linux-2.6.git master.

v4: Allow BUGS in modules (these were not reported correctly in v3)
(thanks to Stephen Boyd <sboyd@codeaurora.org> for suggesting that.)
Remove __bug() as this is no longer needed.

v5: Add %progbits as the section flags.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Stephen Boyd <sboyd@codeaurora.org>
Tested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
(cherry picked from commit 87e040b6456fd3416a1f6831c1eedaef5c0a94ff)

Change-Id: Ic7692288dff6e4a15c732eb030295bd196a87fb4
Signed-off-by: Manoj Chourasia <mchourasia@nvidia.com>
Reviewed-on: http://git-master/r/117356
Reviewed-by: Automatic_Commit_Validation_User
Tested-by: Vishal Singh <vissingh@nvidia.com>
Reviewed-by: Sandeep Trasi <strasi@nvidia.com>
(cherry picked from commit 6708ffd0b44f4d09d8fe745471641545655091fb)
Reviewed-on: http://git-master/r/119328
Reviewed-by: Bob Johnston <bjohnston@nvidia.com>
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
ARM: tegra: move secondary start kernel message 2012-07-27T16:59:57+00:00 Jake Park jakep@nvidia.com 2012-07-24T04:59:45+00:00 7e7cb6ad913a379204c1858d2a409fa748592895 Using printk before CPU online can make hang or kernel panic. Bug 1017539 Bug 1019700 Signed-off-by: Jake Park <jakep@nvidia.com> Reviewed-on: http://git-master/r/117924 (cherry picked from commit 9d7426fdc7e8c70079d37f529517932370355ac6) Change-Id: Ib55ee06dcaf92af63f8d72ee74939c72dda4296c Reviewed-on: http://git-master/r/118141 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com> Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com> Reviewed-by: Sang-Hun Lee <sanlee@nvidia.com> Tested-by: Sang-Hun Lee <sanlee@nvidia.com> 
Using printk before CPU online can make hang or kernel panic.

Bug 1017539
Bug 1019700

Signed-off-by: Jake Park <jakep@nvidia.com>
Reviewed-on: http://git-master/r/117924
(cherry picked from commit 9d7426fdc7e8c70079d37f529517932370355ac6)

Change-Id: Ib55ee06dcaf92af63f8d72ee74939c72dda4296c
Reviewed-on: http://git-master/r/118141
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Peter Boonstoppel <pboonstoppel@nvidia.com>
Reviewed-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-by: Sang-Hun Lee <sanlee@nvidia.com>
Tested-by: Sang-Hun Lee <sanlee@nvidia.com>
ARM: tegra: define/enable ARCH_HAS_SUSPEND_PAGETABLE 2012-05-22T01:46:54+00:00 Chris Johnson cwj@nvidia.com 2012-02-15T01:27:08+00:00 52effd517ca3520d10311be1885f860414928e6f For Tegra, the CPU suspend code path installs its own 1:1 pagetable setup once at init time. This pagetable is used by all CPUs doing suspend/resume. We want to use the common ARM code for CPU suspend/resume, but don't want the MMU reenable code to patch the current pagetable as it's shared (and could cause problems if the pagetable loads/stores were were interleaved). The installed pagetable already covers the cpu_resume_turn_mmu_on VA, so we're able to just use the existing pagetable. This sets up the CONFIG option to skip this part of the MMU reenable. Bug 929856 Change-Id: Ibbac258122df6def7f7a2d511778a6f11d474938 Signed-off-by: Chris Johnson <cwj@nvidia.com> Reviewed-on: http://git-master/r/92350 Reviewed-by: Sang-Hun Lee <sanlee@nvidia.com> Tested-by: Sang-Hun Lee <sanlee@nvidia.com> Reviewed-by: Thomas Cherry <tcherry@nvidia.com> Reviewed-by: Krishna Reddy <vdumpa@nvidia.com> Reviewed-by: Ahung Cheng <ahcheng@nvidia.com> Tested-by: Ahung Cheng <ahcheng@nvidia.com> Reviewed-on: http://git-master/r/103205 Reviewed-by: Simone Willett <swillett@nvidia.com> Tested-by: Simone Willett <swillett@nvidia.com> 
For Tegra, the CPU suspend code path installs its own 1:1 pagetable
setup once at init time. This pagetable is used by all CPUs doing
suspend/resume.

We want to use the common ARM code for CPU suspend/resume, but don't
want the MMU reenable code to patch the current pagetable as it's
shared (and could cause problems if the pagetable loads/stores were
were interleaved).

The installed pagetable already covers the cpu_resume_turn_mmu_on
VA, so we're able to just use the existing pagetable. This sets up
the CONFIG option to skip this part of the MMU reenable.

Bug 929856

Change-Id: Ibbac258122df6def7f7a2d511778a6f11d474938
Signed-off-by: Chris Johnson <cwj@nvidia.com>
Reviewed-on: http://git-master/r/92350
Reviewed-by: Sang-Hun Lee <sanlee@nvidia.com>
Tested-by: Sang-Hun Lee <sanlee@nvidia.com>
Reviewed-by: Thomas Cherry <tcherry@nvidia.com>
Reviewed-by: Krishna Reddy <vdumpa@nvidia.com>
Reviewed-by: Ahung Cheng <ahcheng@nvidia.com>
Tested-by: Ahung Cheng <ahcheng@nvidia.com>
Reviewed-on: http://git-master/r/103205
Reviewed-by: Simone Willett <swillett@nvidia.com>
Tested-by: Simone Willett <swillett@nvidia.com>
Revert "ARM: pm: force non-zero return value from __cpu_suspend when aborting" 2012-04-19T14:42:13+00:00 Sang-Hun Lee sanlee@nvidia.com 2012-04-16T17:55:33+00:00 2ef69e26274348c6d4ab744f86b9cf76f9bfa8d8 This reverts commit 037bc840859c0d52abedeb576888714698f04bcf. Bug 967887 Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com> Change-Id: I89fa9aad8e56628ebb8932c694d37ab92daaab22 Reviewed-on: http://git-master/r/96796 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> 
This reverts commit 037bc840859c0d52abedeb576888714698f04bcf.

Bug 967887

Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com>
Change-Id: I89fa9aad8e56628ebb8932c694d37ab92daaab22
Reviewed-on: http://git-master/r/96796
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Revert "ARM: pm: preallocate a page table for suspend/resume" 2012-04-19T14:41:54+00:00 Sang-Hun Lee sanlee@nvidia.com 2012-04-16T17:55:16+00:00 4e1769f2438a00e67f71c887ce0f50efbcb9fc41 This reverts commit 55f0f45a45263ba26bd473f50f867d29dd836e46. Bug 967887 Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com> Change-Id: I036e0bd4e391a17dec8fa0fe86da7eb6b98d503a Reviewed-on: http://git-master/r/96795 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> 
This reverts commit 55f0f45a45263ba26bd473f50f867d29dd836e46.

Bug 967887

Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com>
Change-Id: I036e0bd4e391a17dec8fa0fe86da7eb6b98d503a
Reviewed-on: http://git-master/r/96795
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>
Revert "ARM: pm: only use preallocated page table during resume" 2012-04-19T14:41:37+00:00 Sang-Hun Lee sanlee@nvidia.com 2012-04-16T17:55:04+00:00 d37014951a2e983935311582d72ad1fd48db6f5c This reverts commit 46d9f14943770c24603ef7cdfd8eb2dbcd3c1248. Bug 967887 Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com> Change-Id: Iee732d8137043240902201d7783d2c3fede98fbe Reviewed-on: http://git-master/r/96794 Reviewed-by: Automatic_Commit_Validation_User Reviewed-by: Varun Wadekar <vwadekar@nvidia.com> 
This reverts commit 46d9f14943770c24603ef7cdfd8eb2dbcd3c1248.

Bug 967887

Signed-off-by: Sang-Hun Lee <sanlee@nvidia.com>
Change-Id: Iee732d8137043240902201d7783d2c3fede98fbe
Reviewed-on: http://git-master/r/96794
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Varun Wadekar <vwadekar@nvidia.com>