08 Oct, 2016
1 commit
-
When doing an nmi backtrace of many cores, most of which are idle, the
output is a little overwhelming and very uninformative. Suppress
messages for cpus that are idling when they are interrupted and just
emit one line, "NMI backtrace for N skipped: idling at pc 0xNNN".We do this by grouping all the cpuidle code together into a new
.cpuidle.text section, and then checking the address of the interrupted
PC to see if it lies within that section.This commit suitably tags x86 and tile idle routines, and only adds in
the minimal framework for other architectures.Link: http://lkml.kernel.org/r/1472487169-14923-5-git-send-email-cmetcalf@mellanox.com
Signed-off-by: Chris Metcalf
Acked-by: Peter Zijlstra (Intel)
Tested-by: Peter Zijlstra (Intel)
Tested-by: Daniel Thompson [arm]
Tested-by: Petr Mladek
Cc: Aaron Tomlin
Cc: Peter Zijlstra (Intel)
Cc: "Rafael J. Wysocki"
Cc: Russell King
Cc: Thomas Gleixner
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
05 Aug, 2016
1 commit
-
Pull metag architecture updates from James Hogan:
"Just a few minor fixes:- Fix another incorrect inline asm register constraint, which has
been lying quietly for 5 and a half years before finally causing
build breakage during this merge window.- Removal of duplicated KERN_INFO from Joe Perches
- Typo fixes from Andrea Gelmini"
* tag 'metag-for-v4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix __cmpxchg_u32 asm constraint for CMP
metag: Remove duplicate KERN_ prefix
metag: Fix typos
04 Aug, 2016
1 commit
-
The dma-mapping core and the implementations do not change the DMA
attributes passed by pointer. Thus the pointer can point to const data.
However the attributes do not have to be a bitfield. Instead unsigned
long will do fine:1. This is just simpler. Both in terms of reading the code and setting
attributes. Instead of initializing local attributes on the stack
and passing pointer to it to dma_set_attr(), just set the bits.2. It brings safeness and checking for const correctness because the
attributes are passed by value.Semantic patches for this change (at least most of them):
virtual patch
virtual context@r@
identifier f, attrs;@@
f(...,
- struct dma_attrs *attrs
+ unsigned long attrs
, ...)
{
...
}@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)and
// Options: --all-includes
virtual patch
virtual context@r@
identifier f, attrs;
type t;@@
t f(..., struct dma_attrs *attrs);@@
identifier r.f;
@@
f(...,
- NULL
+ 0
)Link: http://lkml.kernel.org/r/1468399300-5399-2-git-send-email-k.kozlowski@samsung.com
Signed-off-by: Krzysztof Kozlowski
Acked-by: Vineet Gupta
Acked-by: Robin Murphy
Acked-by: Hans-Christian Noren Egtvedt
Acked-by: Mark Salter [c6x]
Acked-by: Jesper Nilsson [cris]
Acked-by: Daniel Vetter [drm]
Reviewed-by: Bart Van Assche
Acked-by: Joerg Roedel [iommu]
Acked-by: Fabien Dessenne [bdisp]
Reviewed-by: Marek Szyprowski [vb2-core]
Acked-by: David Vrabel [xen]
Acked-by: Konrad Rzeszutek Wilk [xen swiotlb]
Acked-by: Joerg Roedel [iommu]
Acked-by: Richard Kuo [hexagon]
Acked-by: Geert Uytterhoeven [m68k]
Acked-by: Gerald Schaefer [s390]
Acked-by: Bjorn Andersson
Acked-by: Hans-Christian Noren Egtvedt [avr32]
Acked-by: Vineet Gupta [arc]
Acked-by: Robin Murphy [arm64 and dma-iommu]
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
31 Jul, 2016
1 commit
-
Pull DeviceTree updates from Rob Herring:
- remove most of_platform_populate() calls in arch code. Now the DT
core code calls it in the default case and platforms only need to
call it if they have special needs- use pr_fmt on all the DT core print statements
- CoreSight binding doc improvements to block name descriptions
- add dt_to_config script which can parse dts files and list
corresponding kernel config options- fix memory leak hit with a PowerMac DT
- correct a bunch of STMicro compatible strings to use the correct
vendor prefix- fix DA9052 PMIC binding doc to match what is actually used in dts
files* tag 'devicetree-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (35 commits)
documentation: da9052: Update regulator bindings names to match DA9052/53 DTS expectations
xtensa: Partially Revert "xtensa: Remove unnecessary of_platform_populate with default match table"
xtensa: Fix build error due to missing include file
MIPS: ath79: Add missing include file
Fix spelling errors in Documentation/devicetree
ARM: dts: fix STMicroelectronics compatible strings
powerpc/dts: fix STMicroelectronics compatible strings
Documentation: dt: i2c: use correct STMicroelectronics vendor prefix
scripts/dtc: dt_to_config - kernel config options for a devicetree
of: fdt: mark unflattened tree as detached
of: overlay: add resolver error prints
coresight: document binding acronyms
Documentation/devicetree: document cavium-pip rx-delay/tx-delay properties
of: use pr_fmt prefix for all console printing
of/irq: Mark initialised interrupt controllers as populated
of: fix memory leak related to safe_name()
Revert "of/platform: export of_default_bus_match_table"
of: unittest: use of_platform_default_populate() to populate default bus
memory: omap-gpmc: use of_platform_default_populate() to populate default bus
bus: uniphier-system-bus: use of_platform_default_populate() to populate default bus
...
15 Jul, 2016
2 commits
-
Fix typos in metag architecture.
[james.hogan@imgtec.com: squashed patches and fixed "detailed"]
Signed-off-by: Andrea Gelmini
Signed-off-by: James Hogan -
Install the callbacks via the state machine and let the core invoke
the callbacks on the already online CPUs.Signed-off-by: Richard Cochran
Signed-off-by: Anna-Maria Gleixner
Reviewed-by: Sebastian Andrzej Siewior
Cc: Alexander Shishkin
Cc: Arnaldo Carvalho de Melo
Cc: James Hogan
Cc: Linus Torvalds
Cc: Peter Zijlstra
Cc: Thomas Gleixner
Cc: linux-metag@vger.kernel.org
Cc: rt@linutronix.de
Link: http://lkml.kernel.org/r/20160713153336.717395164@linutronix.de
Signed-off-by: Ingo Molnar
24 Jun, 2016
1 commit
-
After patch "of/platform: Add common method to populate default bus",
it is possible for arch code to remove unnecessary callers of
of_platform_populate with default match table.Cc: James Hogan
Signed-off-by: Kefeng Wang
Signed-off-by: Rob Herring
26 May, 2016
1 commit
-
Pull perf updates from Ingo Molnar:
"Mostly tooling and PMU driver fixes, but also a number of late updates
such as the reworking of the call-chain size limiting logic to make
call-graph recording more robust, plus tooling side changes for the
new 'backwards ring-buffer' extension to the perf ring-buffer"* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
perf record: Read from backward ring buffer
perf record: Rename variable to make code clear
perf record: Prevent reading invalid data in record__mmap_read
perf evlist: Add API to pause/resume
perf trace: Use the ptr->name beautifier as default for "filename" args
perf trace: Use the fd->name beautifier as default for "fd" args
perf report: Add srcline_from/to branch sort keys
perf evsel: Record fd into perf_mmap
perf evsel: Add overwrite attribute and check write_backward
perf tools: Set buildid dir under symfs when --symfs is provided
perf trace: Only auto set call-graph to "dwarf" when syscalls are being traced
perf annotate: Sort list of recognised instructions
perf annotate: Fix identification of ARM blt and bls instructions
perf tools: Fix usage of max_stack sysctl
perf callchain: Stop validating callchains by the max_stack sysctl
perf trace: Fix exit_group() formatting
perf top: Use machine->kptr_restrict_warned
perf trace: Warn when trying to resolve kernel addresses with kptr_restrict=1
perf machine: Do not bail out if not managing to read ref reloc symbol
perf/x86/intel/p4: Trival indentation fix, remove space
...
21 May, 2016
1 commit
-
We need to call exit_thread from copy_process in a fail path. So make it
accept task_struct as a parameter.[v2]
* s390: exit_thread_runtime_instr doesn't make sense to be called for
non-current tasks.
* arm: fix the comment in vfp_thread_copy
* change 'me' to 'tsk' for task_struct
* now we can change only archs that actually have exit_thread[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jiri Slaby
Cc: "David S. Miller"
Cc: "H. Peter Anvin"
Cc: "James E.J. Bottomley"
Cc: Aurelien Jacquiot
Cc: Benjamin Herrenschmidt
Cc: Catalin Marinas
Cc: Chen Liqin
Cc: Chris Metcalf
Cc: Chris Zankel
Cc: David Howells
Cc: Fenghua Yu
Cc: Geert Uytterhoeven
Cc: Guan Xuetao
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Heiko Carstens
Cc: Helge Deller
Cc: Ingo Molnar
Cc: Ivan Kokshaysky
Cc: James Hogan
Cc: Jeff Dike
Cc: Jesper Nilsson
Cc: Jiri Slaby
Cc: Jonas Bonn
Cc: Koichi Yasutake
Cc: Lennox Wu
Cc: Ley Foon Tan
Cc: Mark Salter
Cc: Martin Schwidefsky
Cc: Matt Turner
Cc: Max Filippov
Cc: Michael Ellerman
Cc: Michal Simek
Cc: Mikael Starvik
Cc: Paul Mackerras
Cc: Peter Zijlstra
Cc: Ralf Baechle
Cc: Rich Felker
Cc: Richard Henderson
Cc: Richard Kuo
Cc: Richard Weinberger
Cc: Russell King
Cc: Steven Miao
Cc: Thomas Gleixner
Cc: Tony Luck
Cc: Vineet Gupta
Cc: Will Deacon
Cc: Yoshinori Sato
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
17 May, 2016
3 commits
-
We will use it to count how many addresses are in the entry->ip[] array,
excluding PERF_CONTEXT_{KERNEL,USER,etc} entries, so that we can really
return the number of entries specified by the user via the relevant
sysctl, kernel.perf_event_max_contexts, or via the per event
perf_event_attr.sample_max_stack knob.This way we keep the perf_sample->ip_callchain->nr meaning, that is the
number of entries, be it real addresses or PERF_CONTEXT_ entries, while
honouring the max_stack knobs, i.e. the end result will be max_stack
entries if we have at least that many entries in a given stack trace.Cc: David Ahern
Cc: Frederic Weisbecker
Cc: Jiri Olsa
Cc: Namhyung Kim
Cc: Peter Zijlstra
Link: http://lkml.kernel.org/n/tip-s8teto51tdqvlfhefndtat9r@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
This makes perf_callchain_{user,kernel}() receive the max stack
as context for the perf_callchain_entry, instead of accessing
the global sysctl_perf_event_max_stack.Cc: Adrian Hunter
Cc: Alexander Shishkin
Cc: Alexei Starovoitov
Cc: Brendan Gregg
Cc: David Ahern
Cc: Frederic Weisbecker
Cc: He Kuang
Cc: Jiri Olsa
Cc: Linus Torvalds
Cc: Masami Hiramatsu
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Thomas Gleixner
Cc: Vince Weaver
Cc: Wang Nan
Cc: Zefan Li
Link: http://lkml.kernel.org/n/tip-kolmn1yo40p7jhswxwrc7rrd@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo -
Pull metag architecture updates from James Hogan:
"Three minor fixes:- removal of stale comment
- fix build for Meta1 when perf events are enabled
- fix inline asm constraint in atomics"* tag 'metag-for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: Fix atomic_*_return inline asm constraints
metag: perf: fix build on Meta1
metag: ftrace: remove the misleading comment for ftrace_dyn_arch_init
03 May, 2016
1 commit
-
Meta1 doesn't support PERF_ICORE or PERF_CHAN registers resulting in
build errors due to missing definitions. Fix this with an ifdef matching
the one in asm/metag_mem.h.The build errors (found by a randconfig):
arch/metag/kernel/perf/perf_event.c: In function 'metag_pmu_enable_counter':
arch/metag/kernel/perf/perf_event.c:639: error: 'PERF_ICORE0' undeclared (first use in this function)
arch/metag/kernel/perf/perf_event.c:639: error: (Each undeclared identifier is reported only once
arch/metag/kernel/perf/perf_event.c:639: error: for each function it appears in.)
arch/metag/kernel/perf/perf_event.c:643: error: 'PERF_CHAN0' undeclared (first use in this function)Signed-off-by: James Hogan
Cc: linux-metag@vger.kernel.org
30 Apr, 2016
1 commit
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ftrace_dyn_arch_init no longer in kstop_machine, so remove the
corresponding comment.Signed-off-by: Li Bin
Signed-off-by: James Hogan
27 Apr, 2016
1 commit
-
The default remains 127, which is good for most cases, and not even hit
most of the time, but then for some cases, as reported by Brendan, 1024+
deep frames are appearing on the radar for things like groovy, ruby.And in some workloads putting a _lower_ cap on this may make sense. One
that is per event still needs to be put in place tho.The new file is:
# cat /proc/sys/kernel/perf_event_max_stack
127Chaging it:
# echo 256 > /proc/sys/kernel/perf_event_max_stack
# cat /proc/sys/kernel/perf_event_max_stack
256But as soon as there is some event using callchains we get:
# echo 512 > /proc/sys/kernel/perf_event_max_stack
-bash: echo: write error: Device or resource busy
#Because we only allocate the callchain percpu data structures when there
is a user, which allows for changing the max easily, its just a matter
of having no callchain users at that point.Reported-and-Tested-by: Brendan Gregg
Reviewed-by: Frederic Weisbecker
Acked-by: Alexei Starovoitov
Acked-by: David Ahern
Cc: Adrian Hunter
Cc: Alexander Shishkin
Cc: He Kuang
Cc: Jiri Olsa
Cc: Linus Torvalds
Cc: Masami Hiramatsu
Cc: Milian Wolff
Cc: Namhyung Kim
Cc: Peter Zijlstra
Cc: Stephane Eranian
Cc: Thomas Gleixner
Cc: Vince Weaver
Cc: Wang Nan
Cc: Zefan Li
Link: http://lkml.kernel.org/r/20160426002928.GB16708@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo
26 Mar, 2016
1 commit
-
KASAN needs to know whether the allocation happens in an IRQ handler.
This lets us strip everything below the IRQ entry point to reduce the
number of unique stack traces needed to be stored.Move the definition of __irq_entry to so that the
users don't need to pull in . Also introduce the
__softirq_entry macro which is similar to __irq_entry, but puts the
corresponding functions to the .softirqentry.text section.Signed-off-by: Alexander Potapenko
Acked-by: Steven Rostedt
Cc: Christoph Lameter
Cc: Pekka Enberg
Cc: David Rientjes
Cc: Joonsoo Kim
Cc: Andrey Konovalov
Cc: Dmitry Vyukov
Cc: Andrey Ryabinin
Cc: Konstantin Serebryany
Cc: Dmitry Chernenkov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
02 Mar, 2016
1 commit
-
Let the non boot cpus call into idle with the corresponding hotplug state, so
the hotplug core can handle the further bringup. That's a first step to
convert the boot side of the hotplugged cpus to do all the synchronization
with the other side through the state machine. For now it'll only start the
hotplug thread and kick the full bringup of the cpu.Signed-off-by: Thomas Gleixner
Cc: linux-arch@vger.kernel.org
Cc: Rik van Riel
Cc: Rafael Wysocki
Cc: "Srivatsa S. Bhat"
Cc: Peter Zijlstra
Cc: Arjan van de Ven
Cc: Sebastian Siewior
Cc: Rusty Russell
Cc: Steven Rostedt
Cc: Oleg Nesterov
Cc: Tejun Heo
Cc: Andrew Morton
Cc: Paul McKenney
Cc: Linus Torvalds
Cc: Paul Turner
Link: http://lkml.kernel.org/r/20160226182341.614102639@linutronix.de
Signed-off-by: Thomas Gleixner
21 Jan, 2016
1 commit
-
Signed-off-by: Christoph Hellwig
Cc: James Hogan
Cc: Christian Borntraeger
Cc: Joerg Roedel
Cc: Sebastian Ott
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
15 Jan, 2016
1 commit
-
Pull livepatching updates from Jiri Kosina:
- RO/NX attribute fixes for patch module relocations from Josh
Poimboeuf. As part of this effort, module.c has been cleaned up as
well and livepatching is piggy-backing on this cleanup. Rusty is OK
with this whole lot going through livepatching tree.- symbol disambiguation support from Chris J Arges. That series is
alsoReviewed-by: Miroslav Benes
but this came in only after I've alredy pushed out. Didn't want to
rebase because of that, hence I am mentioning it here.- symbol lookup fix from Miroslav Benes
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
livepatch: Cleanup module page permission changes
module: keep percpu symbols in module's symtab
module: clean up RO/NX handling.
module: use a structure to encapsulate layout.
gcov: use within_module() helper.
module: Use the same logic for setting and unsetting RO/NX
livepatch: function,sympos scheme in livepatch sysfs directory
livepatch: add sympos as disambiguator field to klp_reloc
livepatch: add old_sympos as disambiguator field to klp_func
24 Dec, 2015
1 commit
-
There is no need to worry about module and __init text disappearing
case, because that ftrace has a module notifier that is called when
a module is being unloaded and before the text goes away and this
code grabs the ftrace_lock mutex and removes the module functions
from the ftrace list, such that it will no longer do any
modifications to that module's text, the update to make functions
be traced or not is done under the ftrace_lock mutex as well.
And by now, __init section codes should not been modified
by ftrace, because it is black listed in recordmcount.c and
ignored by ftrace.Link: http://lkml.kernel.org/r/1449367378-29430-3-git-send-email-huawei.libin@huawei.com
Cc: linux-metag@vger.kernel.org
Acked-by: James Hogan
Suggested-by: Steven Rostedt
Signed-off-by: Li Bin
Signed-off-by: Steven Rostedt
05 Dec, 2015
1 commit
-
Makes it easier to handle init vs core cleanly, though the change is
fairly invasive across random architectures.It simplifies the rbtree code immediately, however, while keeping the
core data together in the same cachline (now iff the rbtree code is
enabled).Acked-by: Peter Zijlstra
Reviewed-by: Josh Poimboeuf
Signed-off-by: Rusty Russell
Signed-off-by: Jiri Kosina
11 Nov, 2015
1 commit
-
Pull metag arch updates from James Hogan:
"A fix for 4KiB stacks with SMP, and a change of maintenance status to
'Odd Fixes'"* tag 'metag-for-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
MAINTAINERS: Change Meta arch port status to Odd Fixes
metag: Turn irq_ctx_* macros into static inlines
metag: SMP: Fix 4KiB stack setup on secondary CPUs
16 Sep, 2015
2 commits
-
Most interrupt flow handlers do not use the irq argument. Those few
which use it can retrieve the irq number from the irq descriptor.Remove the argument.
Search and replace was done with coccinelle and some extra helper
scripts around it. Thanks to Julia for her help!Signed-off-by: Thomas Gleixner
Cc: Julia Lawall
Cc: Jiang Liu -
Back in early 2008, 4KiB stack support was added to reduce memory
consumption on workloads with lots of threads, using a separate IRQ
stack per CPU to alleviate stack pressure. However the SMP code added a
year and a half later didn't set up the IRQ stack when bringing up
secondary CPUs, resulting in a crash when SMP is configured with 4KiB
stacks, as soon as the first interrupt arrived on a secondary CPU.Fix with calls to irq_ctx_exit()/irq_ctx_exit() when bringing up/down a
CPU.Signed-off-by: James Hogan
Cc: linux-metag@vger.kernel.org
14 Jul, 2015
1 commit
-
This is a preparatory patch for moving irq_data struct members.
Signed-off-by: Jiang Liu
Signed-off-by: Thomas Gleixner
Signed-off-by: James Hogan
24 Apr, 2015
1 commit
-
Pull Metag architecture updates from James Hogan:
"Just the one change for v4.1-rc1. A minor cleanup of copy_thread()"* tag 'metag-for-v4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: copy_thread(): rename 'arg' argument to 'kthread_arg'
16 Apr, 2015
1 commit
-
Pull exec domain removal from Richard Weinberger:
"This series removes execution domain support from Linux.The idea behind exec domains was to support different ABIs. The
feature was never complete nor stable. Let's rip it out and make the
kernel signal handling code less complicated"* 'exec_domain_rip_v2' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (27 commits)
arm64: Removed unused variable
sparc: Fix execution domain removal
Remove rest of exec domains.
arch: Remove exec_domain from remaining archs
arc: Remove signal translation and exec_domain
xtensa: Remove signal translation and exec_domain
xtensa: Autogenerate offsets in struct thread_info
x86: Remove signal translation and exec_domain
unicore32: Remove signal translation and exec_domain
um: Remove signal translation and exec_domain
tile: Remove signal translation and exec_domain
sparc: Remove signal translation and exec_domain
sh: Remove signal translation and exec_domain
s390: Remove signal translation and exec_domain
mn10300: Remove signal translation and exec_domain
microblaze: Remove signal translation and exec_domain
m68k: Remove signal translation and exec_domain
m32r: Remove signal translation and exec_domain
m32r: Autogenerate offsets in struct thread_info
frv: Remove signal translation and exec_domain
...
13 Apr, 2015
1 commit
-
Signed-off-by: Richard Weinberger
16 Mar, 2015
1 commit
-
The 'arg' argument to copy_thread() is only ever used when forking a new
kernel thread. Hence, rename it to 'kthread_arg' for clarity.Signed-off-by: Alex Dowad
Signed-off-by: James Hogan
12 Mar, 2015
1 commit
-
This commit removes the open-coded CPU-offline notification with new
common code. This change avoids calling scheduler code using RCU from
an offline CPU that RCU is ignoring. This commit is compatible with
the existing code in not checking for timeout during a prior offline
for a given CPU.Signed-off-by: Paul E. McKenney
Cc: James Hogan
Cc:
13 Feb, 2015
1 commit
-
If an attacker can cause a controlled kernel stack overflow, overwriting
the restart block is a very juicy exploit target. This is because the
restart_block is held in the same memory allocation as the kernel stack.Moving the restart block to struct task_struct prevents this exploit by
making the restart_block harder to locate.Note that there are other fields in thread_info that are also easy
targets, at least on some architectures.It's also a decent simplification, since the restart code is more or less
identical on all architectures.[james.hogan@imgtec.com: metag: align thread_info::supervisor_stack]
Signed-off-by: Andy Lutomirski
Cc: Thomas Gleixner
Cc: Al Viro
Cc: "H. Peter Anvin"
Cc: Ingo Molnar
Cc: Kees Cook
Cc: David Miller
Acked-by: Richard Weinberger
Cc: Richard Henderson
Cc: Ivan Kokshaysky
Cc: Matt Turner
Cc: Vineet Gupta
Cc: Russell King
Cc: Catalin Marinas
Cc: Will Deacon
Cc: Haavard Skinnemoen
Cc: Hans-Christian Egtvedt
Cc: Steven Miao
Cc: Mark Salter
Cc: Aurelien Jacquiot
Cc: Mikael Starvik
Cc: Jesper Nilsson
Cc: David Howells
Cc: Richard Kuo
Cc: "Luck, Tony"
Cc: Geert Uytterhoeven
Cc: Michal Simek
Cc: Ralf Baechle
Cc: Jonas Bonn
Cc: "James E.J. Bottomley"
Cc: Helge Deller
Cc: Benjamin Herrenschmidt
Cc: Paul Mackerras
Acked-by: Michael Ellerman (powerpc)
Tested-by: Michael Ellerman (powerpc)
Cc: Martin Schwidefsky
Cc: Heiko Carstens
Cc: Chen Liqin
Cc: Lennox Wu
Cc: Chris Metcalf
Cc: Guan Xuetao
Cc: Chris Zankel
Cc: Max Filippov
Cc: Oleg Nesterov
Cc: Guenter Roeck
Signed-off-by: James Hogan
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
27 Aug, 2014
1 commit
-
Replace __get_cpu_var uses for address calculation with this_cpu_ptr().
Acked-by: James Hogan
Signed-off-by: Christoph Lameter
Signed-off-by: Tejun Heo
14 Aug, 2014
1 commit
-
Pull metag architecture updates from James Hogan:
"Just a couple of minor static analysis fixes, removal of a NULL check
that should never happen, and fix an error check where an unsigned
value was being checked to see if it was negative"* tag 'metag-for-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/metag:
metag: cachepart: Fix failure check
metag: hugetlbpage: Remove null pointer checks that could never happen
10 Aug, 2014
1 commit
-
Pull arch signal handling cleanup from Richard Weinberger:
"This patch series moves all remaining archs to the get_signal(),
signal_setup_done() and sigsp() functions.Currently these archs use open coded variants of the said functions.
Further, unused parameters get removed from get_signal_to_deliver(),
tracehook_signal_handler() and signal_delivered().At the end of the day we save around 500 lines of code."
* 'signal-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/misc: (43 commits)
powerpc: Use sigsp()
openrisc: Use sigsp()
mn10300: Use sigsp()
mips: Use sigsp()
microblaze: Use sigsp()
metag: Use sigsp()
m68k: Use sigsp()
m32r: Use sigsp()
hexagon: Use sigsp()
frv: Use sigsp()
cris: Use sigsp()
c6x: Use sigsp()
blackfin: Use sigsp()
avr32: Use sigsp()
arm64: Use sigsp()
arc: Use sigsp()
sas_ss_flags: Remove nested ternary if
Rip out get_signal_to_deliver()
Clean up signal_delivered()
tracehook_signal_handler: Remove sig, info, ka and regs
...
06 Aug, 2014
1 commit
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Use sigsp() instead of the open coded variant.
Signed-off-by: Richard Weinberger
Acked-by: James Hogan
05 Aug, 2014
1 commit
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Pull perf changes from Ingo Molnar:
"Kernel side changes:- Consolidate the PMU interrupt-disabled code amongst architectures
(Vince Weaver)- misc fixes
Tooling changes (new features, user visible changes):
- Add support for pagefault tracing in 'trace', please see multiple
examples in the changeset messages (Stanislav Fomichev).- Add pagefault statistics in 'trace' (Stanislav Fomichev)
- Add header for columns in 'top' and 'report' TUI browsers (Jiri
Olsa)- Add pagefault statistics in 'trace' (Stanislav Fomichev)
- Add IO mode into timechart command (Stanislav Fomichev)
- Fallback to syscalls:* when raw_syscalls:* is not available in the
perl and python perf scripts. (Daniel Bristot de Oliveira)- Add --repeat global option to 'perf bench' to be used in benchmarks
such as the existing 'futex' one, that was modified to use it
instead of a local option. (Davidlohr Bueso)- Fix fd -> pathname resolution in 'trace', be it using /proc or a
vfs_getname probe point. (Arnaldo Carvalho de Melo)- Add suggestion of how to set perf_event_paranoid sysctl, to help
non-root users trying tools like 'trace' to get a working
environment. (Arnaldo Carvalho de Melo)- Updates from trace-cmd for traceevent plugin_kvm plus args cleanup
(Steven Rostedt, Jan Kiszka)- Support S/390 in 'perf kvm stat' (Alexander Yarygin)
Tooling infrastructure changes:
- Allow reserving a row for header purposes in the hists browser
(Arnaldo Carvalho de Melo)- Various fixes and prep work related to supporting Intel PT (Adrian
Hunter)- Introduce multiple debug variables control (Jiri Olsa)
- Add callchain and additional sample information for python scripts
(Joseph Schuchart)- More prep work to support Intel PT: (Adrian Hunter)
- Polishing 'script' BTS output
- 'inject' can specify --kallsym
- VDSO is per machine, not a global var
- Expose data addr lookup functions previously private to 'script'
- Large mmap fixes in events processing- Include standard stringify macros in power pc code (Sukadev
Bhattiprolu)Tooling cleanups:
- Convert open coded equivalents to asprintf() (Andy Shevchenko)
- Remove needless reassignments in 'trace' (Arnaldo Carvalho de Melo)
- Cache the is_exit syscall test in 'trace) (Arnaldo Carvalho de
Melo)- No need to reimplement err() in 'perf bench sched-messaging', drop
barf(). (Davidlohr Bueso).- Remove ev_name argument from perf_evsel__hists_browse, can be
obtained from the other parameters. (Jiri Olsa)Tooling fixes:
- Fix memory leak in the 'sched-messaging' perf bench test.
(Davidlohr Bueso)- The -o and -n 'perf bench mem' options are mutually exclusive, emit
error when both are specified. (Davidlohr Bueso)- Fix scrollbar refresh row index in the ui browser, problem exposed
now that headers will be added and will be allowed to be switched
on/off. (Jiri Olsa)- Handle the num array type in python properly (Sebastian Andrzej
Siewior)- Fix wrong condition for allocation failure (Jiri Olsa)
- Adjust callchain based on DWARF debug info on powerpc (Sukadev
Bhattiprolu)- Fix a risk for doing free on uninitialized pointer in traceevent
lib (Rickard Strandqvist)- Update attr test with PERF_FLAG_FD_CLOEXEC flag (Jiri Olsa)
- Enable close-on-exec flag on perf file descriptor (Yann Droneaud)
- Fix build on gcc 4.4.7 (Arnaldo Carvalho de Melo)
- Event ordering fixes (Jiri Olsa)"
* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (123 commits)
Revert "perf tools: Fix jump label always changing during tracing"
perf tools: Fix perf usage string leftover
perf: Check permission only for parent tracepoint event
perf record: Store PERF_RECORD_FINISHED_ROUND only for nonempty rounds
perf record: Always force PERF_RECORD_FINISHED_ROUND event
perf inject: Add --kallsyms parameter
perf tools: Expose 'addr' functions so they can be reused
perf session: Fix accounting of ordered samples queue
perf powerpc: Include util/util.h and remove stringify macros
perf tools: Fix build on gcc 4.4.7
perf tools: Add thread parameter to vdso__dso_findnew()
perf tools: Add dso__type()
perf tools: Separate the VDSO map name from the VDSO dso name
perf tools: Add vdso__new()
perf machine: Fix the lifetime of the VDSO temporary file
perf tools: Group VDSO global variables into a structure
perf session: Add ability to skip 4GiB or more
perf session: Add ability to 'skip' a non-piped event stream
perf tools: Pass machine to vdso__dso_findnew()
perf tools: Add dso__data_size()
...
19 Jul, 2014
1 commit
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Nothing sets function_trace_stop to disable function tracing anymore.
Remove the check for it in the arch code.Acked-by: James Hogan
Signed-off-by: Steven Rostedt
18 Jul, 2014
1 commit
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[linux-3.16-rc5/arch/metag/kernel/cachepart.c:102]: (style) Checking if
unsigned variable 'thread_cache_size' is less than zero.Source code is
if (thread_cache_size < 0)
pr_emerg("Can't read %s cache size\n",
cache_type ? "DCACHE" : "ICACHE");but
unsigned int thread_cache_size;
Function get_thread_cache_size returns an error code
as (unsigned int) -1.Change get_thread_cache_size() to return signed int, and its result is
stored into signed int variable.Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=80361
Reported-by: David Binderman
Signed-off-by: Andrey Utkin
Signed-off-by: James Hogan
19 Jun, 2014
1 commit
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Transition to using the new generic PERF_PMU_CAP_NO_INTERRUPT method for
failing a sampling event when no PMU interrupt is available.Signed-off-by: Vince Weaver
Acked-by: James Hogan
Signed-off-by: Peter Zijlstra
Cc: Arnaldo Carvalho de Melo
Cc: Paul Mackerras
Cc: linux-metag@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1406150202050.16738@vincent-weaver-1.umelst.maine.edu
Signed-off-by: Ingo Molnar
30 Apr, 2014
1 commit
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Unify the various architectures __dtb_start and __dtb_end definitions
moving them into of_fdt.h.Signed-off-by: Rob Herring
Acked-by: Vineet Gupta
Acked-by: James Hogan
Tested-by: Michal Simek
Cc: Ralf Baechle
Cc: Jonas Bonn
Cc: Chris Zankel
Cc: Max Filippov
Cc: linux-metag@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux@lists.openrisc.net
Cc: linux-xtensa@linux-xtensa.org
Tested-by: Grant Likely
Tested-by: Stephen Chivers
