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Rename core files so there is a clearer separation between the RTC core and
the RTC drivers.
Signed-off-by: Alexandre Belloni <[email protected]>
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To version 2.15
Signed-off-by: Steve French <[email protected]>
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We can not append small padding buffers as separate iovs when encryption is
used. For this case we must flatten the request into a single buffer
containing both the data from all the iovs as well as the padding bytes.
This is at least needed for 4.20 as well due to compounding changes.
CC: Stable <[email protected]>
Signed-off-by: Ronnie Sahlberg <[email protected]>
Signed-off-by: Steve French <[email protected]>
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In cas of probe failure, devres may free the memory allocated for
rtc->nvram before devm_rtc_release_device() is called. This leads to
rtc_nvram_unregister using it after being freed which may lead to a crash.
This has been shown to happen after commit 461e557b9727 ("rtc: nvmem: use
devm_nvmem_register()")
Reported-by: kernel test robot <[email protected]>
Signed-off-by: Alexandre Belloni <[email protected]>
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a9e7f6544b9c
Zhipeng Xie, Xie XiuQi and Sargun Dhillon reported lockups in the
scheduler under high loads, starting at around the v4.18 time frame,
and Zhipeng Xie tracked it down to bugs in the rq->leaf_cfs_rq_list
manipulation.
Do a (manual) revert of:
a9e7f6544b9c ("sched/fair: Fix O(nr_cgroups) in load balance path")
It turns out that the list_del_leaf_cfs_rq() introduced by this commit
is a surprising property that was not considered in followup commits
such as:
9c2791f936ef ("sched/fair: Fix hierarchical order in rq->leaf_cfs_rq_list")
As Vincent Guittot explains:
"I think that there is a bigger problem with commit a9e7f6544b9c and
cfs_rq throttling:
Let take the example of the following topology TG2 --> TG1 --> root:
1) The 1st time a task is enqueued, we will add TG2 cfs_rq then TG1
cfs_rq to leaf_cfs_rq_list and we are sure to do the whole branch in
one path because it has never been used and can't be throttled so
tmp_alone_branch will point to leaf_cfs_rq_list at the end.
2) Then TG1 is throttled
3) and we add TG3 as a new child of TG1.
4) The 1st enqueue of a task on TG3 will add TG3 cfs_rq just before TG1
cfs_rq and tmp_alone_branch will stay on rq->leaf_cfs_rq_list.
With commit a9e7f6544b9c, we can del a cfs_rq from rq->leaf_cfs_rq_list.
So if the load of TG1 cfs_rq becomes NULL before step 2) above, TG1
cfs_rq is removed from the list.
Then at step 4), TG3 cfs_rq is added at the beginning of rq->leaf_cfs_rq_list
but tmp_alone_branch still points to TG3 cfs_rq because its throttled
parent can't be enqueued when the lock is released.
tmp_alone_branch doesn't point to rq->leaf_cfs_rq_list whereas it should.
So if TG3 cfs_rq is removed or destroyed before tmp_alone_branch
points on another TG cfs_rq, the next TG cfs_rq that will be added,
will be linked outside rq->leaf_cfs_rq_list - which is bad.
In addition, we can break the ordering of the cfs_rq in
rq->leaf_cfs_rq_list but this ordering is used to update and
propagate the update from leaf down to root."
Instead of trying to work through all these cases and trying to reproduce
the very high loads that produced the lockup to begin with, simplify
the code temporarily by reverting a9e7f6544b9c - which change was clearly
not thought through completely.
This (hopefully) gives us a kernel that doesn't lock up so people
can continue to enjoy their holidays without worrying about regressions. ;-)
[ mingo: Wrote changelog, fixed weird spelling in code comment while at it. ]
Analyzed-by: Xie XiuQi <[email protected]>
Analyzed-by: Vincent Guittot <[email protected]>
Reported-by: Zhipeng Xie <[email protected]>
Reported-by: Sargun Dhillon <[email protected]>
Reported-by: Xie XiuQi <[email protected]>
Tested-by: Zhipeng Xie <[email protected]>
Tested-by: Sargun Dhillon <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Acked-by: Vincent Guittot <[email protected]>
Cc: <[email protected]> # v4.13+
Cc: Bin Li <[email protected]>
Cc: Mike Galbraith <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Tejun Heo <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Fixes: a9e7f6544b9c ("sched/fair: Fix O(nr_cgroups) in load balance path")
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Ingo Molnar <[email protected]>
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checkpatch.pl reports the following:
WARNING: struct kgdb_arch should normally be const
#28: FILE: arch/mips/kernel/kgdb.c:397:
+struct kgdb_arch arch_kgdb_ops = {
This report makes sense, as all other ops struct, this
one should also be const. This patch does the change.
Cc: Vineet Gupta <[email protected]>
Cc: Russell King <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Michal Simek <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Ley Foon Tan <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: [email protected]
Acked-by: Daniel Thompson <[email protected]>
Acked-by: Paul Burton <[email protected]>
Signed-off-by: Christophe Leroy <[email protected]>
Acked-by: Borislav Petkov <[email protected]>
Acked-by: Michael Ellerman <[email protected]> (powerpc)
Signed-off-by: Daniel Thompson <[email protected]>
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MIPS is the only architecture modifying arch_kgdb_ops during init.
This patch makes the init static, so that it can be changed to
const in following patch, as recommended by checkpatch.pl
Suggested-by: Paul Burton <[email protected]>
Acked-by: Daniel Thompson <[email protected]>
Acked-by: Paul Burton <[email protected]>
Signed-off-by: Christophe Leroy <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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defcmd_in_progress is the state trace for command group processing
- within a command group or not - usable is an indicator if a command
set is valid (allocated/non-empty) - so use a bool for those binary
indication here.
Signed-off-by: Nicholas Mc Guire <[email protected]>
Reviewed-by: Daniel Thompson <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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If you have a CPU that fails to round up and then run 'btc' you'll end
up crashing in kdb becaue we dereferenced NULL. Let's add a check.
It's wise to also set the task to NULL when leaving the debugger so
that if we fail to round up on a later entry into the debugger we
won't backtrace a stale task.
Signed-off-by: Douglas Anderson <[email protected]>
Acked-by: Daniel Thompson <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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If we're using the default implementation of kgdb_roundup_cpus() that
uses smp_call_function_single_async() we can end up hanging
kgdb_roundup_cpus() if we try to round up a CPU that failed to round
up before.
Specifically smp_call_function_single_async() will try to wait on the
csd lock for the CPU that we're trying to round up. If the previous
round up never finished then that lock could still be held and we'll
just sit there hanging.
There's not a lot of use trying to round up a CPU that failed to round
up before. Let's keep a flag that indicates whether the CPU started
but didn't finish to round up before. If we see that flag set then
we'll skip the next round up.
In general we have a few goals here:
- We never want to end up calling smp_call_function_single_async()
when the csd is still locked. This is accomplished because
flush_smp_call_function_queue() unlocks the csd _before_ invoking
the callback. That means that when kgdb_nmicallback() runs we know
for sure the the csd is no longer locked. Thus when we set
"rounding_up = false" we know for sure that the csd is unlocked.
- If there are no timeouts rounding up we should never skip a round
up.
NOTE #1: In general trying to continue running after failing to round
up CPUs doesn't appear to be supported in the debugger. When I
simulate this I find that kdb reports "Catastrophic error detected"
when I try to continue. I can overrule and continue anyway, but it
should be noted that we may be entering the land of dragons here.
Possibly the "Catastrophic error detected" was added _because_ of the
future failure to round up, but even so this is an area of the code
that hasn't been strongly tested.
NOTE #2: I did a bit of testing before and after this change. I
introduced a 10 second hang in the kernel while holding a spinlock
that I could invoke on a certain CPU with 'taskset -c 3 cat /sys/...".
Before this change if I did:
- Invoke hang
- Enter debugger
- g (which warns about Catastrophic error, g again to go anyway)
- g
- Enter debugger
...I'd hang the rest of the 10 seconds without getting a debugger
prompt. After this change I end up in the debugger the 2nd time after
only 1 second with the standard warning about 'Timed out waiting for
secondary CPUs.'
I'll also note that once the CPU finished waiting I could actually
debug it (aka "btc" worked)
I won't promise that everything works perfectly if the errant CPU
comes back at just the wrong time (like as we're entering or exiting
the debugger) but it certainly seems like an improvement.
NOTE #3: setting 'kgdb_info[cpu].rounding_up = false' is in
kgdb_nmicallback() instead of kgdb_call_nmi_hook() because some
implementations override kgdb_call_nmi_hook(). It shouldn't hurt to
have it in kgdb_nmicallback() in any case.
NOTE #4: this logic is really only needed because there is no API call
like "smp_try_call_function_single_async()" or "smp_csd_is_locked()".
If such an API existed then we'd use it instead, but it seemed a bit
much to add an API like this just for kgdb.
Signed-off-by: Douglas Anderson <[email protected]>
Acked-by: Daniel Thompson <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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When I had lockdep turned on and dropped into kgdb I got a nice splat
on my system. Specifically it hit:
DEBUG_LOCKS_WARN_ON(current->hardirq_context)
Specifically it looked like this:
sysrq: SysRq : DEBUG
------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(current->hardirq_context)
WARNING: CPU: 0 PID: 0 at .../kernel/locking/lockdep.c:2875 lockdep_hardirqs_on+0xf0/0x160
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.19.0 #27
pstate: 604003c9 (nZCv DAIF +PAN -UAO)
pc : lockdep_hardirqs_on+0xf0/0x160
...
Call trace:
lockdep_hardirqs_on+0xf0/0x160
trace_hardirqs_on+0x188/0x1ac
kgdb_roundup_cpus+0x14/0x3c
kgdb_cpu_enter+0x53c/0x5cc
kgdb_handle_exception+0x180/0x1d4
kgdb_compiled_brk_fn+0x30/0x3c
brk_handler+0x134/0x178
do_debug_exception+0xfc/0x178
el1_dbg+0x18/0x78
kgdb_breakpoint+0x34/0x58
sysrq_handle_dbg+0x54/0x5c
__handle_sysrq+0x114/0x21c
handle_sysrq+0x30/0x3c
qcom_geni_serial_isr+0x2dc/0x30c
...
...
irq event stamp: ...45
hardirqs last enabled at (...44): [...] __do_softirq+0xd8/0x4e4
hardirqs last disabled at (...45): [...] el1_irq+0x74/0x130
softirqs last enabled at (...42): [...] _local_bh_enable+0x2c/0x34
softirqs last disabled at (...43): [...] irq_exit+0xa8/0x100
---[ end trace adf21f830c46e638 ]---
Looking closely at it, it seems like a really bad idea to be calling
local_irq_enable() in kgdb_roundup_cpus(). If nothing else that seems
like it could violate spinlock semantics and cause a deadlock.
Instead, let's use a private csd alongside
smp_call_function_single_async() to round up the other CPUs. Using
smp_call_function_single_async() doesn't require interrupts to be
enabled so we can remove the offending bit of code.
In order to avoid duplicating this across all the architectures that
use the default kgdb_roundup_cpus(), we'll add a "weak" implementation
to debug_core.c.
Looking at all the people who previously had copies of this code,
there were a few variants. I've attempted to keep the variants
working like they used to. Specifically:
* For arch/arc we passed NULL to kgdb_nmicallback() instead of
get_irq_regs().
* For arch/mips there was a bit of extra code around
kgdb_nmicallback()
NOTE: In this patch we will still get into trouble if we try to round
up a CPU that failed to round up before. We'll try to round it up
again and potentially hang when we try to grab the csd lock. That's
not new behavior but we'll still try to do better in a future patch.
Suggested-by: Daniel Thompson <[email protected]>
Signed-off-by: Douglas Anderson <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: Russell King <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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The function kgdb_roundup_cpus() was passed a parameter that was
documented as:
> the flags that will be used when restoring the interrupts. There is
> local_irq_save() call before kgdb_roundup_cpus().
Nobody used those flags. Anyone who wanted to temporarily turn on
interrupts just did local_irq_enable() and local_irq_disable() without
looking at them. So we can definitely remove the flags.
Signed-off-by: Douglas Anderson <[email protected]>
Cc: Vineet Gupta <[email protected]>
Cc: Russell King <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: Will Deacon <[email protected]>
Cc: Richard Kuo <[email protected]>
Cc: Ralf Baechle <[email protected]>
Cc: Paul Burton <[email protected]>
Cc: James Hogan <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Michael Ellerman <[email protected]>
Cc: Yoshinori Sato <[email protected]>
Cc: Rich Felker <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Acked-by: Will Deacon <[email protected]>
Signed-off-by: Daniel Thompson <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig file consolidation from Masahiro Yamada:
"Consolidation of bus (PCI, PCMCIA, EISA, RapidIO) config entries by
Christoph Hellwig.
Currently, every architecture that wants to provide common peripheral
busses needs to add some boilerplate code and include the right
Kconfig files. This series instead just selects the presence (when
needed) and then handles everything in the bus-specific Kconfig file
under drivers/"
* tag 'kconfig-v4.21-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
pcmcia: remove per-arch PCMCIA config entry
eisa: consolidate EISA Kconfig entry in drivers/eisa
rapidio: consolidate RAPIDIO config entry in drivers/rapidio
pcmcia: allow PCMCIA support independent of the architecture
PCI: consolidate the PCI_SYSCALL symbol
PCI: consolidate the PCI_DOMAINS and PCI_DOMAINS_GENERIC config options
PCI: consolidate PCI config entry in drivers/pci
MIPS: remove the HT_PCI config option
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kconfig updates from Masahiro Yamada:
- support -y option for merge_config.sh to avoid downgrading =y to =m
- remove S_OTHER symbol type, and touch include/config/*.h files correctly
- fix file name and line number in lexer warnings
- fix memory leak when EOF is encountered in quotation
- resolve all shift/reduce conflicts of the parser
- warn no new line at end of file
- make 'source' statement more strict to take only string literal
- rewrite the lexer and remove the keyword lookup table
- convert to SPDX License Identifier
- compile C files independently instead of including them from zconf.y
- fix various warnings of gconfig
- misc cleanups
* tag 'kconfig-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (39 commits)
kconfig: surround dbg_sym_flags with #ifdef DEBUG to fix gconf warning
kconfig: split images.c out of qconf.cc/gconf.c to fix gconf warnings
kconfig: add static qualifiers to fix gconf warnings
kconfig: split the lexer out of zconf.y
kconfig: split some C files out of zconf.y
kconfig: convert to SPDX License Identifier
kconfig: remove keyword lookup table entirely
kconfig: update current_pos in the second lexer
kconfig: switch to ASSIGN_VAL state in the second lexer
kconfig: stop associating kconf_id with yylval
kconfig: refactor end token rules
kconfig: stop supporting '.' and '/' in unquoted words
treewide: surround Kconfig file paths with double quotes
microblaze: surround string default in Kconfig with double quotes
kconfig: use T_WORD instead of T_VARIABLE for variables
kconfig: use specific tokens instead of T_ASSIGN for assignments
kconfig: refactor scanning and parsing "option" properties
kconfig: use distinct tokens for type and default properties
kconfig: remove redundant token defines
kconfig: rename depends_list to comment_option_list
...
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git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull Kbuild updates from Masahiro Yamada:
"Kbuild core:
- remove unneeded $(call cc-option,...) switches
- consolidate Clang compiler flags into CLANG_FLAGS
- announce the deprecation of SUBDIRS
- fix single target build for external module
- simplify the dependencies of 'prepare' stage targets
- allow fixdep to directly write to .*.cmd files
- simplify dependency generation for CONFIG_TRIM_UNUSED_KSYMS
- change if_changed_rule to accept multi-line recipe
- move .SECONDARY special target to scripts/Kbuild.include
- remove redundant 'set -e'
- improve parallel execution for CONFIG_HEADERS_CHECK
- misc cleanups
Treewide fixes and cleanups
- set Clang flags correctly for PowerPC boot images
- fix UML build error with CONFIG_GCC_PLUGINS
- remove unneeded patterns from .gitignore files
- refactor firmware/Makefile
- remove unneeded rules for *offsets.s
- avoid unneeded regeneration of intermediate .s files
- clean up ./Kbuild
Modpost:
- remove unused -M, -K options
- fix false positive warnings about section mismatch
- use simple devtable lookup instead of linker magic
- misc cleanups
Coccinelle:
- relax boolinit.cocci checks for overall consistency
- fix warning messages of boolinit.cocci
Other tools:
- improve -dirty check of scripts/setlocalversion
- add a tool to generate compile_commands.json from .*.cmd files"
* tag 'kbuild-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (51 commits)
kbuild: remove unused cmd_gentimeconst
kbuild: remove $(obj)/ prefixes in ./Kbuild
treewide: add intermediate .s files to targets
treewide: remove explicit rules for *offsets.s
firmware: refactor firmware/Makefile
firmware: remove unnecessary patterns from .gitignore
scripts: remove unnecessary ihex2fw and check-lc_ctypes from .gitignore
um: remove unused filechk_gen_header in Makefile
scripts: add a tool to produce a compile_commands.json file
kbuild: add -Werror=implicit-int flag unconditionally
kbuild: add -Werror=strict-prototypes flag unconditionally
kbuild: add -fno-PIE flag unconditionally
scripts: coccinelle: Correct warning message
scripts: coccinelle: only suggest true/false in files that already use them
kbuild: handle part-of-module correctly for *.ll and *.symtypes
kbuild: refactor part-of-module
kbuild: refactor quiet_modtag
kbuild: remove redundant quiet_modtag for $(obj-m)
kbuild: refactor Makefile.asm-generic
user/Makefile: Fix typo and capitalization in comment section
...
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gen_crc64table requires linux include files to be installed in
/usr/include/linux. This is a new requrement so hosts that could
previously build the kernel, now cannot.
gen_crc64table makes this requirement by including <linux/swab.h>, but
nothing from that header is actaully used.
So remove the #include, so that the linux headers no longer need to be
installed.
Fixes: feba04fd2cf8 ("lib: add crc64 calculation routines")
Signed-off-by: NeilBrown <[email protected]>
Acked-by: Coly Li <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
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Pull documentation update from Jonathan Corbet:
"A fairly normal cycle for documentation stuff. We have a new document
on perf security, more Italian translations, more improvements to the
memory-management docs, improvements to the pathname lookup
documentation, and the usual array of smaller fixes.
As is often the case, there are a few reaches outside of
Documentation/ to adjust kerneldoc comments"
* tag 'docs-5.0' of git://git.lwn.net/linux: (38 commits)
docs: improve pathname-lookup document structure
configfs: fix wrong name of struct in documentation
docs/mm-api: link slab_common.c to "The Slab Cache" section
slab: make kmem_cache_create{_usercopy} description proper kernel-doc
doc:process: add links where missing
docs/core-api: make mm-api.rst more structured
x86, boot: documentation whitespace fixup
Documentation: devres: note checking needs when converting
doc:it: add some process/* translations
doc:it: fixes in process/1.Intro
Documentation: convert path-lookup from markdown to resturctured text
Documentation/admin-guide: update admin-guide index.rst
Documentation/admin-guide: introduce perf-security.rst file
scripts/kernel-doc: Fix struct and struct field attribute processing
Documentation: dev-tools: Fix typos in index.rst
Correct gen_init_cpio tool's documentation
Document /proc/pid PID reuse behavior
Documentation: update path-lookup.md for parallel lookups
Documentation: Use "while" instead of "whilst"
dmaengine: Add mailing list address to the documentation
...
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup updates from Tejun Heo:
- Waiman's cgroup2 cpuset support has been finally merged closing one
of the last remaining feature gaps.
- cgroup.procs could show non-leader threads when cgroup2 threaded mode
was used in certain ways. I forgot to push the fix during the last
cycle.
- A patch to fix mount option parsing when all mount options have been
consumed by someone else (LSM).
- cgroup_no_v1 boot param can now block named cgroup1 hierarchies too.
* 'for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup: Add named hierarchy disabling to cgroup_no_v1 boot param
cgroup: fix parsing empty mount option string
cpuset: Remove set but not used variable 'cs'
cgroup: fix CSS_TASK_ITER_PROCS
cgroup: Add .__DEBUG__. prefix to debug file names
cpuset: Minor cgroup2 interface updates
cpuset: Expose cpuset.cpus.subpartitions with cgroup_debug
cpuset: Add documentation about the new "cpuset.sched.partition" flag
cpuset: Use descriptive text when reading/writing cpuset.sched.partition
cpuset: Expose cpus.effective and mems.effective on cgroup v2 root
cpuset: Make generate_sched_domains() work with partition
cpuset: Make CPU hotplug work with partition
cpuset: Track cpusets that use parent's effective_cpus
cpuset: Add an error state to cpuset.sched.partition
cpuset: Add new v2 cpuset.sched.partition flag
cpuset: Simply allocation and freeing of cpumasks
cpuset: Define data structures to support scheduling partition
cpuset: Enable cpuset controller in default hierarchy
cgroup: remove unnecessary unlikely()
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git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu
Pull percpu update from Dennis Zhou:
"Michael Cree noted generic UP Alpha has been broken since v3.18. This
is a small fix for locking in UP percpu code that fixes the issue"
* 'for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
percpu: convert spin_lock_irq to spin_lock_irqsave.
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Pull Xtensa updates from Max Filippov:
- switch to generated syscall table
- switch ptrace to regsets, use regsets for core dumps
- complete tracehook implementation
- add syscall tracepoints support
- add jumplabels support
- add memtest support
- drop unused/duplicated code from entry.S, ptrace.c, coprocessor.S,
elf.h and syscall.h
- clean up warnings caused by WSR/RSR macros
- clean up DTC warnings about SPI controller node names in xtfpga.dtsi
- simplify coprocessor.S
- get rid of explicit 'l32r' instruction usage in assembly
* tag 'xtensa-20181228' of git://github.com/jcmvbkbc/linux-xtensa: (25 commits)
xtensa: implement jump_label support
xtensa: implement syscall tracepoints
xtensa: implement tracehook functions and enable HAVE_ARCH_TRACEHOOK
xtensa: enable CORE_DUMP_USE_REGSET
xtensa: implement TIE regset
xtensa: implement task_user_regset_view
xtensa: call do_syscall_trace_{enter,leave} selectively
xtensa: use NO_SYSCALL instead of -1
xtensa: define syscall_get_arch()
Move EM_XTENSA to uapi/linux/elf-em.h
xtensa: support memtest
xtensa: don't use l32r opcode directly
xtensa: xtfpga.dtsi: fix dtc warnings about SPI
xtensa: don't clear cpenable unconditionally on release
xtensa: simplify coprocessor.S
xtensa: clean up WSR*/RSR*/get_sr/set_sr
xtensa: drop unused declarations from elf.h
xtensa: clean up syscall.h
xtensa: drop unused coprocessor helper functions
xtensa: drop custom PTRACE_{PEEK,POKE}{TEXT,DATA}
...
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git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux
Pull nds32 updates from Greentime Hu:
- Perf support
- Power management support
- FPU support
- Hardware prefetcher support
- Build error fixed
- Performance enhancement
* tag 'nds32-for-linus-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux:
nds32: support hardware prefetcher
nds32: Fix the items of hwcap_str ordering issue.
math-emu/soft-fp.h: (_FP_ROUND_ZERO) cast 0 to void to fix warning
math-emu/op-2.h: Use statement expressions to prevent negative constant shift
nds32: support denormalized result through FP emulator
nds32: Support FP emulation
nds32: nds32 FPU port
nds32: Remove duplicated include from pm.c
nds32: Power management for nds32
nds32: Add document for NDS32 PMU.
nds32: Add perf call-graph support.
nds32: Perf porting
nds32: Fix bug in bitfield.h
nds32: Fix gcc 8.0 compiler option incompatible.
nds32: Fill all TLB entries with kernel image mapping
nds32: Remove the redundant assignment
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|
In probe_gdrom(), the buffer pointed by 'gd.cd_info' is allocated through
kzalloc() and is used to hold the information of the gdrom device. To
register and unregister the device, the pointer 'gd.cd_info' is passed to
the functions register_cdrom() and unregister_cdrom(), respectively.
However, this buffer is not freed after it is used, which can cause a
memory leak bug.
This patch simply frees the buffer 'gd.cd_info' in exit_gdrom() to fix the
above issue.
Signed-off-by: Wenwen Wang <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull Kselftest updates from Shuah Khan:
- fixes and improvements to the framework, and individual tests
- a new media test for IR encoders from Sean Young
- a new watchdog test option to find time left on a timer
* tag 'linux-kselftest-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
selftests: Fix test errors related to lib.mk khdr target
fix dma-buf/udmabuf selftest
selftests: watchdog: fix spelling mistake "experies" -> "expires"
selftests: watchdog: Add gettimeleft command line arg
selftests: do not macro-expand failed assertion expressions
selftests/ftrace: Fix invalid SPDX identifiers
selftests: gpio: Find libmount with pkg-config if available
selftests: firmware: add CONFIG_FW_LOADER_USER_HELPER_FALLBACK to config
selftests: firmware: remove use of non-standard diff -Z option
media: rc: self test for IR encoders and decoders
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver updates from Greg KH:
"Here is the big set of char and misc driver patches for 4.21-rc1.
Lots of different types of driver things in here, as this tree seems
to be the "collection of various driver subsystems not big enough to
have their own git tree" lately.
Anyway, some highlights of the changes in here:
- binderfs: is it a rule that all driver subsystems will eventually
grow to have their own filesystem? Binder now has one to handle the
use of it in containerized systems.
This was discussed at the Plumbers conference a few months ago and
knocked into mergable shape very fast by Christian Brauner. Who
also has signed up to be another binder maintainer, showing a
distinct lack of good judgement :)
- binder updates and fixes
- mei driver updates
- fpga driver updates and additions
- thunderbolt driver updates
- soundwire driver updates
- extcon driver updates
- nvmem driver updates
- hyper-v driver updates
- coresight driver updates
- pvpanic driver additions and reworking for more device support
- lp driver updates. Yes really, it's _finally_ moved to the proper
parallal port driver model, something I never thought I would see
happen. Good stuff.
- other tiny driver updates and fixes.
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (116 commits)
MAINTAINERS: add another Android binder maintainer
intel_th: msu: Fix an off-by-one in attribute store
stm class: Add a reference to the SyS-T document
stm class: Fix a module refcount leak in policy creation error path
char: lp: use new parport device model
char: lp: properly count the lp devices
char: lp: use first unused lp number while registering
char: lp: detach the device when parallel port is removed
char: lp: introduce list to save port number
bus: qcom: remove duplicated include from qcom-ebi2.c
VMCI: Use memdup_user() rather than duplicating its implementation
char/rtc: Use of_node_name_eq for node name comparisons
misc: mic: fix a DMA pool free failure
ptp: fix an IS_ERR() vs NULL check
genwqe: Fix size check
binder: implement binderfs
binder: fix use-after-free due to ksys_close() during fdget()
bus: fsl-mc: remove duplicated include files
bus: fsl-mc: explicitly define the fsl_mc_command endianness
misc: ti-st: make array read_ver_cmd static, shrinks object size
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg KH:
"Here is the "big" set of driver core patches for 4.21-rc1.
It's not really big, just a number of small changes for some reported
issues, some documentation updates to hopefully make it harder for
people to abuse the driver model, and some other minor cleanups.
All of these have been in linux-next for a while with no reported
issues"
* tag 'driver-core-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
mm, memory_hotplug: update a comment in unregister_memory()
component: convert to DEFINE_SHOW_ATTRIBUTE
sysfs: Disable lockdep for driver bind/unbind files
driver core: Add missing dev->bus->need_parent_lock checks
kobject: return error code if writing /sys/.../uevent fails
driver core: Move async_synchronize_full call
driver core: platform: Respect return code of platform_device_register_full()
kref/kobject: Improve documentation
drivers/base/memory.c: Use DEVICE_ATTR_RO and friends
driver core: Replace simple_strto{l,ul} by kstrtou{l,ul}
kernfs: Improve kernfs_notify() poll notification latency
kobject: Fix warnings in lib/kobject_uevent.c
kobject: drop unnecessary cast "%llu" for u64
driver core: fix comments for device_block_probing()
driver core: Replace simple_strtol by kstrtoint
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging/IIO driver updates from Greg KH:
"Here is the big staging and iio driver pull request for 4.21-rc1.
Lots and lots of tiny patches here, nothing major at all. Which is
good, tiny cleanups is nice to see. No new huge driver removal or
addition, this release cycle, although there are lots of good IIO
driver changes, addtions, and movement from staging into the "real"
part of the kernel, which is always great.
Full details are in the shortlog, and all of these have been in
linux-next for a while with no reported issues"
* tag 'staging-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (553 commits)
staging: mt7621-mmc: Correct spelling mistakes in comments
staging: wilc1000: fix missing read_write setting when reading data
mt7621-mmc: char * array declaration might be better as static const
mt7621-mmc: return statement in void function unnecessary
mt7621-mmc: Alignment should match open parenthesis
mt7621-mmc: Removed unnecessary blank lines
mt7621-mmc: Fix some coding style issues
staging: android: ashmem: doc: Fix spelling
staging: rtl8188eu: cleanup brace coding style issues
staging: rtl8188eu: add spaces around '&' in rtw_mlme_ext.c
staging: rtl8188eu: change return type of is_basicrate() to bool
staging: rtl8188eu: simplify null array initializations
staging: rtl8188eu: change order of declarations to improve readability
staging: rtl8188eu: make some arrays static in rtw_mlme_ext.c
staging: rtl8188eu: constify some arrays
staging: rtl8188eu: convert unsigned char arrays to u8
staging: rtl8188eu: remove redundant declaration in rtw_mlme_ext.c
staging: rtl8188eu: remove unused arrays WFD_OUI and WMM_INFO_OUI
staging: rtl8188eu: remove unnecessary parentheses in rtw_mlme_ext.c
staging: rtl8188eu: remove unnecessary comments in rtw_mlme_ext.c
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver updates from Greg KH:
"Here is the large TTY/Serial driver set of patches for 4.21-rc1.
A number of small serial driver changes along with some good tty core
fixes for long-reported issues with locking. There is also a new
console font added to the tree, for high-res screens, so that should
be helpful for many.
The last patch in the series is a revert of an older one in the tree,
it came late but it resolves a reported issue that linux-next was
having for some people.
Full details are in the shortlog, and all of these, with the exception
of the revert, have been in linux-next for a while with no reported
issues"
* tag 'tty-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (85 commits)
Revert "serial: 8250: Default SERIAL_OF_PLATFORM to SERIAL_8250"
serial: sccnxp: Allow to use non-standard baud rates
serial: sccnxp: Adds a delay between sequential read/write cycles
tty: serial: qcom_geni_serial: Fix UART hang
tty: serial: qcom_geni_serial: Fix wrap around of TX buffer
serial: max310x: Fix tx_empty() callback
dt-bindings: serial: sh-sci: Document r8a774c0 bindings
dt-bindings: serial: sh-sci: Document r8a774a1 bindings
Fonts: New Terminus large console font
dt-bindings: serial: lpuart: add imx8qxp compatible string
serial: uartps: Fix interrupt mask issue to handle the RX interrupts properly
serial: uartps: Fix error path when alloc failed
serial: uartps: Check if the device is a console
serial: uartps: Add the device_init_wakeup
tty: serial: samsung: Increase maximum baudrate
tty: serial: samsung: Properly set flags in autoCTS mode
tty: Use of_node_name_{eq,prefix} for node name comparisons
tty/serial: do not free trasnmit buffer page under port lock
serial: 8250: Rate limit serial port rx interrupts during input overruns
dt-bindings: serial: 8250: Add rate limit for serial port input overruns
...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB/PHY updates from Greg KH:
"Here is the big set of USB and PHY driver patches for 4.21-rc1.
All of the usual bits are in here:
- loads of USB gadget driver updates and additions
- new device ids
- phy driver updates
- xhci reworks and new features
- typec updates
Full details are in the shortlog.
All of these have been in linux-next for a long time with no reported
issues"
* tag 'usb-4.21-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (142 commits)
USB: serial: option: add Fibocom NL678 series
cdc-acm: fix abnormal DATA RX issue for Mediatek Preloader.
usb: r8a66597: Fix a possible concurrency use-after-free bug in r8a66597_endpoint_disable()
usb: typec: tcpm: Extend the matching rules on PPS APDO selection
usb: typec: Improve Alt Mode documentation
usb: musb: dsps: fix runtime pm for peripheral mode
usb: musb: dsps: fix otg state machine
USB: serial: pl2303: add ids for Hewlett-Packard HP POS pole displays
usb: renesas_usbhs: add support for RZ/G2E
usb: ehci-omap: Fix deferred probe for phy handling
usb: roles: Add a description for the class to Kconfig
usb: renesas_usbhs: mark PM functions as __maybe_unused
usb: core: Remove unnecessary memset()
usb: host: isp1362-hcd: convert to DEFINE_SHOW_ATTRIBUTE
phy: qcom-qmp: Expose provided clocks to DT
dt-bindings: phy-qcom-qmp: Move #clock-cells to child
phy: qcom-qmp: Utilize fully-specified DT registers
dt-bindings: phy-qcom-qmp: Fix register underspecification
phy: ti: fix semicolon.cocci warnings
phy: dphy: Add configuration helpers
...
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi
Pull HSI update from Sebastian Reichel:
"omap-ssi: use DEFINE_SHOW_ATTRIBUTE"
* tag 'hsi-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-hsi:
HSI: omap_ssi: Change to use DEFINE_SHOW_ATTRIBUTE macro
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git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel:
- New core support:
- battery internal resistance
- battery OCV capacity lookup table
- support for custom sysfs attributes
- Convert all drivers to use power-supply core support for custom sysfs
attributes
- bq24190-charger: bq24196 support
- axp20x-charger: AXP813 support
- sc27xx-battery: new fuel gauge driver
- gpio-poweroff: support for specific active and inactive delays
- Misc fixes
* tag 'for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: (53 commits)
power: supply: bq25890: fix BAT_COMP field definition
power: supply: gpio-charger: Do not use deprecated POWER_SUPPLY_TYPE_USB_*
power: supply: ds2781: switch to devm_power_supply_register
power: supply: ds2780: switch to devm_power_supply_register
power: supply: ds2781: fix race-condition in bin attribute registration
power: supply: ds2780: fix race-condition in bin attribute registration
power: supply: pcf50633: fix race-condition in sysfs registration
power: supply: charger-manager: fix race-condition in sysfs registration
power: supply: charger-manager: simplify generation of sysfs attribute group name
power: supply: bq24257: fix race-condition in sysfs registration
power: supply: bq24190_charger: fix race-condition in sysfs registration
power: supply: lp8788: fix race-condition in sysfs registration
power: supply: ds2781: fix race-condition in sysfs registration
power: supply: ds2780: fix race-condition in sysfs registration
power: supply: bq2415x: fix race-condition in sysfs registration
power: supply: core: add support for custom sysfs attributes
power: supply: sc27xx: Save last battery capacity
power: reset: at91-poweroff: move shdwc related data to one structure
power: supply: sc27xx: Add suspend/resume interfaces
power: supply: sc27xx: Add fuel gauge low voltage alarm
...
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull Devicetree updates from Rob Herring:
"The biggest highlight here is the start of using json-schema for DT
bindings. Being able to validate bindings has been discussed for years
with little progress.
- Initial support for DT bindings using json-schema language. This is
the start of converting DT bindings from free-form text to a
structured format.
- Reworking of initrd address initialization. This moves to using the
phys address instead of virt addr in the DT parsing code. This
rework was motivated by CONFIG_DEV_BLK_INITRD causing unnecessary
rebuilding of lots of files.
- Fix stale phandle entries in phandle cache
- DT overlay validation improvements. This exposed several memory
leak bugs which have been fixed.
- Use node name and device_type helper functions in DT code
- Last remaining conversions to using %pOFn printk specifier instead
of device_node.name directly
- Create new common RTC binding doc and move all trivial RTC devices
out of trivial-devices.txt.
- New bindings for Freescale MAG3110 magnetometer, Cadence Sierra
PHY, and Xen shared memory
- Update dtc to upstream version v1.4.7-57-gf267e674d145"
* tag 'devicetree-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (68 commits)
of: __of_detach_node() - remove node from phandle cache
of: of_node_get()/of_node_put() nodes held in phandle cache
gpio-omap.txt: add reg and interrupts properties
dt-bindings: mrvl,intc: fix a trivial typo
dt-bindings: iio: magnetometer: add dt-bindings for freescale mag3110
dt-bindings: Convert trivial-devices.txt to json-schema
dt-bindings: arm: mrvl: amend Browstone compatible string
dt-bindings: arm: Convert Tegra board/soc bindings to json-schema
dt-bindings: arm: Convert ZTE board/soc bindings to json-schema
dt-bindings: arm: Add missing Xilinx boards
dt-bindings: arm: Convert Xilinx board/soc bindings to json-schema
dt-bindings: arm: Convert VIA board/soc bindings to json-schema
dt-bindings: arm: Convert ST STi board/soc bindings to json-schema
dt-bindings: arm: Convert SPEAr board/soc bindings to json-schema
dt-bindings: arm: Convert CSR SiRF board/soc bindings to json-schema
dt-bindings: arm: Convert QCom board/soc bindings to json-schema
dt-bindings: arm: Convert TI nspire board/soc bindings to json-schema
dt-bindings: arm: Convert TI davinci board/soc bindings to json-schema
dt-bindings: arm: Convert Calxeda board/soc bindings to json-schema
dt-bindings: arm: Convert Altera board/soc bindings to json-schema
...
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO updates from Linus Walleij:
"This is the bulk of GPIO changes for the v4.21 kernel series.
Core changes:
- Some core changes are already in outside of this pull request as
they came through the regulator tree, most notably
devm_gpiod_unhinge() that removes devres refcount management from a
GPIO descriptor. This is needed in subsystems such as regulators
where the regulator core need to take over the reference counting
and lifecycle management for a GPIO descriptor.
- We dropped devm_gpiochip_remove() and devm_gpio_chip_match() as
nothing needs it. We can bring it back if need be.
- Add a global TODO so people see where we are going. This helps
setting the direction now that we are two GPIO maintainers.
- Handle the MMC CD/WP properties in the device tree core. (The bulk
of patches activating this code is already merged through the
MMC/SD tree.)
- Augment gpiochip_request_own_desc() to pass a flag so we as
gpiochips can request lines as active low or open drain etc even
from ourselves.
New drivers:
- New driver for Cadence GPIO blocks.
- New driver for Atmel SAMA5D2 PIOBU GPIO lines.
Driver improvements:
- A major refactoring of the PCA953x driver - this driver has been
around for ages, and is now modernized to reduce code duplication
that has stacked up and is using regmap to read write and cache
registers.
- Intel drivers are now maintained in a separate tree and start with
a round of cleanups and unifications"
* tag 'gpio-v4.21-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (99 commits)
gpio: sama5d2-piobu: Depend on OF_GPIO
gpio: Add Cadence GPIO driver
dt-bindings: gpio: Add bindings for Cadence GPIO
gpiolib-acpi: remove unused variable 'err', cleans up build warning
gpio: mxs: read pin level directly instead of using .get
gpio: aspeed: remove duplicated statement
gpio: add driver for SAMA5D2 PIOBU pins
dt-bindings: arm: atmel: describe SECUMOD usage as a GPIO controller
gpio/mmc/of: Respect polarity in the device tree
dt-bindings: gpio: rcar: Add r8a774c0 (RZ/G2E) support
memory: omap-gpmc: Get the header of the enum
ARM: omap1: Fix new user of gpiochip_request_own_desc()
gpio: pca953x: Add regmap dependency for PCA953x driver
gpio: raspberrypi-exp: decrease refcount on firmware dt node
gpiolib: Fix return value of gpio_to_desc() stub if !GPIOLIB
gpio: pca953x: Restore registers after suspend/resume cycle
gpio: pca953x: Zap single use of pca953x_read_single()
gpio: pca953x: Zap ad-hoc reg_output cache
gpio: pca953x: Zap ad-hoc reg_direction cache
gpio: pca953x: Perform basic regmap conversion
...
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Pull more drm updates from Dave Airlie:
"Daniel collected a couple of pulls after I want on holidays, back for
a couple of days, so may as well send them out.
This has exynos and etnaviv work for 4.21.
exynos:
- plane alpha and blending configurability
etnaviv:
- mostly cleanups in prep for new features"
* tag 'drm-next-2018-12-27' of git://anongit.freedesktop.org/drm/drm:
drm/etnaviv: remove lastctx member from gpu struct
drm/etnaviv: replace header include with forward declaration
drm/etnaviv: remove unnecessary local irq disable
drm/exynos: fimd: Make pixel blend mode configurable
drm/exynos: fimd: Make plane alpha configurable
drm/etnaviv: Replace drm_dev_unref with drm_dev_put
drm/etnaviv: consolidate hardware fence handling in etnaviv_gpu
drm/etnaviv: kill active fence tracking
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck:
"The big change in this series is for the most part automatic:
Introducing SENSOR[_DEVICE]_ATTR_{RO,RW,WO} variants and conversion of
various drivers to use it. This is similar to DEVICE_ATTR variants.
Other than that, we have
- Some conversions of S_<PERMS> with octal values, also automated
- Added support for Hygon Dhyana CPUs to k10temp driver
- Added support for STLM75 to lm75 driver
- B57891S0103 to ntc_thermistor
- Added pm-runtime support to ina3221 driver
- Support for PowerPC On-Chip Controller (OCC)
- Various minor bug fices and improvements"
* tag 'hwmon-for-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (80 commits)
hwmon: (lm80) fix a missing check of bus read in lm80 probe
hwmon: (lm80) fix a missing check of the status of SMBus read
hwmon: (asus_atk0110) Fix debugfs_simple_attr.cocci warnings
hwmon: (ftsteutates) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (fschmd) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (emc6w201) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (emc2103) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (emc1403) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (ds620) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (ds1621) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (dell-smm-hwmon) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (da9055-hwmon) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (da9052-hwmon) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (coretemp) Replace S_<PERMS> with octal values
hwmon: (asus_atk0110) Replace S_<PERMS> with octal values
hwmon: (aspeed-pwm-tacho) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (applesmc) Replace S_<PERMS> with octal values
hwmon: (amc6821) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (adt7x10) Use permission specific SENSOR[_DEVICE]_ATTR variants
hwmon: (adt7475) Use permission specific SENSOR[_DEVICE]_ATTR variants
...
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Pull VFIO updates from Alex Williamson:
- Replace global vfio-pci lock with per bus lock to allow concurrent
open and release (Alex Williamson)
- Declare mdev function as static (Paolo Cretaro)
- Convert char to u8 in mdev/mtty sample driver (Nathan Chancellor)
* tag 'vfio-v4.21-rc1' of git://github.com/awilliam/linux-vfio:
vfio-mdev/samples: Use u8 instead of char for handle functions
vfio/mdev: add static modifier to add_mdev_supported_type
vfio/pci: Parallelize device open and release
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Prepare input updates for 4.21 merge window.
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This adds ELAN0501 to the ACPI table to support Elan touchpad found in ASUS
Aspire F5-573G.
Signed-off-by: Patrick Dreyer <[email protected]>
Cc: [email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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If the user attempts to update Atmel device with an invalid configuration
cfg file, error handling code is trying to free cfg file memory which is
not allocated yet hence results into kernel crash.
This patch fixes the order of memory free operations.
Signed-off-by: Sanjeev Chugh <[email protected]>
Fixes: a4891f105837 ("Input: atmel_mxt_ts - zero terminate config firmware file")
Cc: [email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>
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Merge misc updates from Andrew Morton:
- large KASAN update to use arm's "software tag-based mode"
- a few misc things
- sh updates
- ocfs2 updates
- just about all of MM
* emailed patches from Andrew Morton <[email protected]>: (167 commits)
kernel/fork.c: mark 'stack_vm_area' with __maybe_unused
memcg, oom: notify on oom killer invocation from the charge path
mm, swap: fix swapoff with KSM pages
include/linux/gfp.h: fix typo
mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm
hugetlbfs: Use i_mmap_rwsem to fix page fault/truncate race
hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
memory_hotplug: add missing newlines to debugging output
mm: remove __hugepage_set_anon_rmap()
include/linux/vmstat.h: remove unused page state adjustment macro
mm/page_alloc.c: allow error injection
mm: migrate: drop unused argument of migrate_page_move_mapping()
blkdev: avoid migration stalls for blkdev pages
mm: migrate: provide buffer_migrate_page_norefs()
mm: migrate: move migrate_page_lock_buffers()
mm: migrate: lock buffers before migrate_page_move_mapping()
mm: migration: factor out code to compute expected number of page references
mm, page_alloc: enable pcpu_drain with zone capability
kmemleak: add config to select auto scan
mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init
...
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Pull MMC updates from Ulf Hansson:
"This time, this pull request contains changes crossing subsystems and
archs/platforms, which is mainly because of a bigger modernization of
moving from legacy GPIO to GPIO descriptors for MMC (by Linus
Walleij).
Additionally, once again, I am funneling changes to
drivers/misc/cardreader/* and drivers/memstick/* through my MMC tree,
mostly due to that we lack a maintainer for these.
Summary:
MMC core:
- Cleanup BKOPS support
- Introduce MMC_CAP_SYNC_RUNTIME_PM
- slot-gpio: Delete legacy slot GPIO handling
MMC host:
- alcor: Add new mmc host driver for Alcor Micro PCI based cardreader
- bcm2835: Several improvements to better recover from errors
- jz4740: Rework and fixup pre|post_req support
- mediatek: Add support for SDIO IRQs
- meson-gx: Improve clock phase management
- meson-gx: Stop descriptor on errors
- mmci: Complete the sbc error path by sending a stop command
- renesas_sdhi/tmio: Fixup reset/resume operations
- renesas_sdhi: Add support for r8a774c0 and R7S9210
- renesas_sdhi: Whitelist R8A77990 SDHI
- renesas_sdhi: Fixup eMMC HS400 compatibility issues for H3 and M3-W
- rtsx_usb_sdmmc: Re-work card detection/removal support
- rtsx_usb_sdmmc: Re-work runtime PM support
- sdhci: Fix timeout loops for some variant drivers
- sdhci: Improve support for error handling due to failing commands
- sdhci-acpi/pci: Disable LED control for Intel BYT-based controllers
- sdhci_am654: Add new SDHCI variant driver to support TI's AM654 SOCs
- sdhci-of-esdhc: Add support for eMMC HS400 mode
- sdhci-omap: Fixup reset support
- sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures
- sdhci-msm: Fixup sporadic write transfers issues for SDR104/HS200
- sdhci-msm: Fixup dynamical clock gating issues
- various: Complete converting all hosts into using slot GPIO descriptors
Other:
- Move GPIO mmc platform data for mips/sh/arm to GPIO descriptors
- Add new Alcor Micro cardreader PCI driver
- Support runtime power management for memstick rtsx_usb_ms driver
- Use USB remote wakeups for card detection for rtsx_usb misc driver"
* tag 'mmc-v4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc: (99 commits)
mmc: mediatek: Add MMC_CAP_SDIO_IRQ support
mmc: renesas_sdhi_internal_dmac: Whitelist r8a774c0
dt-bindings: mmc: renesas_sdhi: Add r8a774c0 support
mmc: core: Cleanup BKOPS support
mmc: core: Drop redundant check in mmc_send_hpi_cmd()
mmc: sdhci-omap: Workaround errata regarding SDR104/HS200 tuning failures (i929)
dt-bindings: sdhci-omap: Add note for cpu_thermal
mmc: sdhci-acpi: Disable LED control for Intel BYT-based controllers
mmc: sdhci-pci: Disable LED control for Intel BYT-based controllers
mmc: sdhci: Add quirk to disable LED control
mmc: mmci: add variant property to set command stop bit
misc: alcor_pci: fix spelling mistake "invailid" -> "invalid"
mmc: meson-gx: add signal resampling
mmc: meson-gx: align default phase on soc vendor tree
mmc: meson-gx: remove useless lock
mmc: meson-gx: make sure the descriptor is stopped on errors
mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver
dt-bindings: mmc: sdhci-of-arasan: Add deprecated message for AM65
dt-bindings: mmc: sdhci-am654: Document bindings for the host controllers on TI's AM654 SOCs
mmc: sdhci-msm: avoid unused function warning
...
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm updates from Dan Williams:
"The vast bulk of this update is the new support for the security
capabilities of some nvdimms.
The userspace tooling for this capability is still a work in progress,
but the changes survive the existing libnvdimm unit tests. The changes
also pass manual checkout on hardware and the new nfit_test emulation
of the security capability.
The touches of the security/keys/ files have received the necessary
acks from Mimi and David. Those changes were necessary to allow for a
new generic encrypted-key type, and allow the nvdimm sub-system to
lookup key material referenced by the libnvdimm-sysfs interface.
Summary:
- Add support for the security features of nvdimm devices that
implement a security model similar to ATA hard drive security. The
security model supports locking access to the media at
device-power-loss, to be unlocked with a passphrase, and
secure-erase (crypto-scramble).
Unlike the ATA security case where the kernel expects device
security to be managed in a pre-OS environment, the libnvdimm
security implementation allows key provisioning and key-operations
at OS runtime. Keys are managed with the kernel's encrypted-keys
facility to provide data-at-rest security for the libnvdimm key
material. The usage model mirrors fscrypt key management, but is
driven via libnvdimm sysfs.
- Miscellaneous updates for api usage and comment fixes"
* tag 'libnvdimm-for-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (21 commits)
libnvdimm/security: Quiet security operations
libnvdimm/security: Add documentation for nvdimm security support
tools/testing/nvdimm: add Intel DSM 1.8 support for nfit_test
tools/testing/nvdimm: Add overwrite support for nfit_test
tools/testing/nvdimm: Add test support for Intel nvdimm security DSMs
acpi/nfit, libnvdimm/security: add Intel DSM 1.8 master passphrase support
acpi/nfit, libnvdimm/security: Add security DSM overwrite support
acpi/nfit, libnvdimm: Add support for issue secure erase DSM to Intel nvdimm
acpi/nfit, libnvdimm: Add enable/update passphrase support for Intel nvdimms
acpi/nfit, libnvdimm: Add disable passphrase support to Intel nvdimm.
acpi/nfit, libnvdimm: Add unlock of nvdimm support for Intel DIMMs
acpi/nfit, libnvdimm: Add freeze security support to Intel nvdimm
acpi/nfit, libnvdimm: Introduce nvdimm_security_ops
keys-encrypted: add nvdimm key format type to encrypted keys
keys: Export lookup_user_key to external users
acpi/nfit, libnvdimm: Store dimm id as a member to struct nvdimm
libnvdimm, namespace: Replace kmemdup() with kstrndup()
libnvdimm, label: Switch to bitmap_zalloc()
ACPI/nfit: Adjust annotation for why return 0 if fail to find NFIT at start
libnvdimm, bus: Check id immediately following ida_simple_get
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git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper updates from Mike Snitzer:
- Eliminate a couple indirect calls from bio-based DM core.
- Fix DM to allow reads that exceed readahead limits by setting
io_pages in the backing_dev_info.
- A couple code cleanups in request-based DM.
- Fix various DM targets to check for device sector overflow if
CONFIG_LBDAF is not set.
- Use u64 instead of sector_t to store iv_offset in DM crypt; sector_t
isn't large enough on 32bit when CONFIG_LBDAF is not set.
- Performance fixes to DM's kcopyd and the snapshot target focused on
limiting memory use and workqueue stalls.
- Fix typos in the integrity and writecache targets.
- Log which algorithm is used for dm-crypt's encryption and
dm-integrity's hashing.
- Fix false -EBUSY errors in DM raid target's handling of check/repair
messages.
- Fix DM flakey target's corrupt_bio_byte feature to reliably corrupt
the Nth byte in a bio's payload.
* tag 'for-4.21/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: do not allow readahead to limit IO size
dm raid: fix false -EBUSY when handling check/repair message
dm rq: cleanup leftover code from recently removed q->mq_ops branching
dm verity: log the hash algorithm implementation
dm crypt: log the encryption algorithm implementation
dm integrity: fix spelling mistake in workqueue name
dm flakey: Properly corrupt multi-page bios.
dm: Check for device sector overflow if CONFIG_LBDAF is not set
dm crypt: use u64 instead of sector_t to store iv_offset
dm kcopyd: Fix bug causing workqueue stalls
dm snapshot: Fix excessive memory usage and workqueue stalls
dm bufio: update comment in dm-bufio.c
dm writecache: fix typo in error msg for creating writecache_flush_thread
dm: remove indirect calls from __send_changing_extent_only()
dm mpath: only flush workqueue when needed
dm rq: remove unused arguments from rq_completed()
dm: avoid indirect call in __dm_make_request
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Pull rdma updates from Jason Gunthorpe:
"This has been a fairly typical cycle, with the usual sorts of driver
updates. Several series continue to come through which improve and
modernize various parts of the core code, and we finally are starting
to get the uAPI command interface cleaned up.
- Various driver fixes for bnxt_re, cxgb3/4, hfi1, hns, i40iw, mlx4,
mlx5, qib, rxe, usnic
- Rework the entire syscall flow for uverbs to be able to run over
ioctl(). Finally getting past the historic bad choice to use
write() for command execution
- More functional coverage with the mlx5 'devx' user API
- Start of the HFI1 series for 'TID RDMA'
- SRQ support in the hns driver
- Support for new IBTA defined 2x lane widths
- A big series to consolidate all the driver function pointers into a
big struct and have drivers provide a 'static const' version of the
struct instead of open coding initialization
- New 'advise_mr' uAPI to control device caching/loading of page
tables
- Support for inline data in SRPT
- Modernize how umad uses the driver core and creates cdev's and
sysfs files
- First steps toward removing 'uobject' from the view of the drivers"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (193 commits)
RDMA/srpt: Use kmem_cache_free() instead of kfree()
RDMA/mlx5: Signedness bug in UVERBS_HANDLER()
IB/uverbs: Signedness bug in UVERBS_HANDLER()
IB/mlx5: Allocate the per-port Q counter shared when DEVX is supported
IB/umad: Start using dev_groups of class
IB/umad: Use class_groups and let core create class file
IB/umad: Refactor code to use cdev_device_add()
IB/umad: Avoid destroying device while it is accessed
IB/umad: Simplify and avoid dynamic allocation of class
IB/mlx5: Fix wrong error unwind
IB/mlx4: Remove set but not used variable 'pd'
RDMA/iwcm: Don't copy past the end of dev_name() string
IB/mlx5: Fix long EEH recover time with NVMe offloads
IB/mlx5: Simplify netdev unbinding
IB/core: Move query port to ioctl
RDMA/nldev: Expose port_cap_flags2
IB/core: uverbs copy to struct or zero helper
IB/rxe: Reuse code which sets port state
IB/rxe: Make counters thread safe
IB/mlx5: Use the correct commands for UMEM and UCTX allocation
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Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: smarpqi, lpfc, qedi,
megaraid_sas, libsas, zfcp, mpt3sas, hisi_sas.
Additionally, we have a pile of annotation, unused variable and minor
updates.
The big API change is the updates for Christoph's DMA rework which
include removing the DISABLE_CLUSTERING flag.
And finally there are a couple of target tree updates"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (259 commits)
scsi: isci: request: mark expected switch fall-through
scsi: isci: remote_node_context: mark expected switch fall-throughs
scsi: isci: remote_device: Mark expected switch fall-throughs
scsi: isci: phy: Mark expected switch fall-through
scsi: iscsi: Capture iscsi debug messages using tracepoints
scsi: myrb: Mark expected switch fall-throughs
scsi: megaraid: fix out-of-bound array accesses
scsi: mpt3sas: mpt3sas_scsih: Mark expected switch fall-through
scsi: fcoe: remove set but not used variable 'port'
scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown()
scsi: smartpqi: fix build warnings
scsi: smartpqi: update driver version
scsi: smartpqi: add ofa support
scsi: smartpqi: increase fw status register read timeout
scsi: smartpqi: bump driver version
scsi: smartpqi: add smp_utils support
scsi: smartpqi: correct lun reset issues
scsi: smartpqi: correct volume status
scsi: smartpqi: do not offline disks for transient did no connect conditions
scsi: smartpqi: allow for larger raid maps
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Pull DMA mapping updates from Christoph Hellwig:
"A huge update this time, but a lot of that is just consolidating or
removing code:
- provide a common DMA_MAPPING_ERROR definition and avoid indirect
calls for dma_map_* error checking
- use direct calls for the DMA direct mapping case, avoiding huge
retpoline overhead for high performance workloads
- merge the swiotlb dma_map_ops into dma-direct
- provide a generic remapping DMA consistent allocator for
architectures that have devices that perform DMA that is not cache
coherent. Based on the existing arm64 implementation and also used
for csky now.
- improve the dma-debug infrastructure, including dynamic allocation
of entries (Robin Murphy)
- default to providing chaining scatterlist everywhere, with opt-outs
for the few architectures (alpha, parisc, most arm32 variants) that
can't cope with it
- misc sparc32 dma-related cleanups
- remove the dma_mark_clean arch hook used by swiotlb on ia64 and
replace it with the generic noncoherent infrastructure
- fix the return type of dma_set_max_seg_size (Niklas Söderlund)
- move the dummy dma ops for not DMA capable devices from arm64 to
common code (Robin Murphy)
- ensure dma_alloc_coherent returns zeroed memory to avoid kernel
data leaks through userspace. We already did this for most common
architectures, but this ensures we do it everywhere.
dma_zalloc_coherent has been deprecated and can hopefully be
removed after -rc1 with a coccinelle script"
* tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping: (73 commits)
dma-mapping: fix inverted logic in dma_supported
dma-mapping: deprecate dma_zalloc_coherent
dma-mapping: zero memory returned from dma_alloc_*
sparc/iommu: fix ->map_sg return value
sparc/io-unit: fix ->map_sg return value
arm64: default to the direct mapping in get_arch_dma_ops
PCI: Remove unused attr variable in pci_dma_configure
ia64: only select ARCH_HAS_DMA_COHERENT_TO_PFN if swiotlb is enabled
dma-mapping: bypass indirect calls for dma-direct
vmd: use the proper dma_* APIs instead of direct methods calls
dma-direct: merge swiotlb_dma_ops into the dma_direct code
dma-direct: use dma_direct_map_page to implement dma_direct_map_sg
dma-direct: improve addressability error reporting
swiotlb: remove dma_mark_clean
swiotlb: remove SWIOTLB_MAP_ERROR
ACPI / scan: Refactor _CCA enforcement
dma-mapping: factor out dummy DMA ops
dma-mapping: always build the direct mapping code
dma-mapping: move dma_cache_sync out of line
dma-mapping: move various slow path functions out of line
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