Ingo Molnar [Wed, 3 Jun 2015 10:39:26 +0000 (12:39 +0200)]
Documentation/features: Explain kernel feature descriptions and add visualization script
The previous patches added arch support matrices for more than 40 generic kernel features
that need per architecture support.
The structure of the feature descriptions is the following:
Each feature has its own directory under Documentation/features/subsystem_name/feature_name/,
and the arch-support.txt file shows its current arch porting status.
For example, lockdep support is shown the following way:
triton:~/tip> cat Documentation/features/locking/lockdep/arch-support.txt
#
# Feature name: lockdep
# Kconfig: LOCKDEP_SUPPORT
# description: arch supports the runtime locking correctness debug facility
#
-----------------------
| arch |status|
-----------------------
| alpha: | TODO |
| arc: | ok |
| arm: | ok |
| arm64: | ok |
| avr32: | ok |
| blackfin: | ok |
| c6x: | TODO |
| cris: | TODO |
| frv: | TODO |
| h8300: | TODO |
| hexagon: | ok |
| ia64: | TODO |
| m32r: | TODO |
| m68k: | TODO |
| metag: | ok |
| microblaze: | ok |
| mips: | ok |
| mn10300: | TODO |
| nios2: | TODO |
| openrisc: | TODO |
| parisc: | TODO |
| powerpc: | ok |
| s390: | ok |
| score: | ok |
| sh: | ok |
| sparc: | ok |
| tile: | ok |
| um: | ok |
| unicore32: | ok |
| x86: | ok |
| xtensa: | ok |
-----------------------
For generic kernel features that need architecture support, the
arch-support.txt file in each feature directory shows the arch
support matrix, for all upstream Linux architectures.
The meaning of entries in the tables is:
| ok | # feature supported by the architecture
|TODO| # feature not yet supported by the architecture
| .. | # feature cannot be supported by the hardware
This directory structure can be used in the future to add other
files - such as porting guides, testing description, etc.
The Documentation/features/ hierarchy may also include generic
kernel features that works on every architecture, in that case
the arch-support.txt file will list every architecture as
supported.
To list an architecture's unsupported features, just do something
like:
triton:~/tip> git grep -lE 'x86.*TODO' Documentation/features/*/*/arch-support.txt
Documentation/features/lib/strncasecmp/arch-support.txt
Documentation/features/time/arch-tick-broadcast/arch-support.txt
which will print the list of not yet supported features.
The Documentation/features/list-arch.sh script will print the current
support matrix of one architecture:
triton:~/tip> Documentation/features/list-arch.sh
#
# Kernel feature support matrix of the 'x86' architecture:
#
core/ BPF-JIT : ok | HAVE_BPF_JIT # arch supports BPF JIT optimizations
core/ generic-idle-thread : ok | GENERIC_SMP_IDLE_THREAD # arch makes use of the generic SMP idle thread facility
core/ jump-labels : ok | HAVE_ARCH_JUMP_LABEL # arch supports live patched, high efficiency branches
core/ tracehook : ok | HAVE_ARCH_TRACEHOOK # arch supports tracehook (ptrace) register handling APIs
debug/ gcov-profile-all : ok | ARCH_HAS_GCOV_PROFILE_ALL # arch supports whole-kernel GCOV code coverage profiling
debug/ KASAN : ok | HAVE_ARCH_KASAN # arch supports the KASAN runtime memory checker
debug/ kgdb : ok | HAVE_ARCH_KGDB # arch supports the kGDB kernel debugger
debug/ kprobes : ok | HAVE_KPROBES # arch supports live patched kernel probe
debug/ kprobes-on-ftrace : ok | HAVE_KPROBES_ON_FTRACE # arch supports combined kprobes and ftrace live patching
debug/ kretprobes : ok | HAVE_KRETPROBES # arch supports kernel function-return probes
debug/ optprobes : ok | HAVE_OPTPROBES # arch supports live patched optprobes
debug/ stackprotector : ok | HAVE_CC_STACKPROTECTOR # arch supports compiler driven stack overflow protection
debug/ uprobes : ok | ARCH_SUPPORTS_UPROBES # arch supports live patched user probes
debug/ user-ret-profiler : ok | HAVE_USER_RETURN_NOTIFIER # arch supports user-space return from system call profiler
io/ dma-api-debug : ok | HAVE_DMA_API_DEBUG # arch supports DMA debug facilities
io/ dma-contiguous : ok | HAVE_DMA_CONTIGUOUS # arch supports the DMA CMA (continuous memory allocator)
io/ dma_map_attrs : ok | HAVE_DMA_ATTRS # arch provides dma_*map*_attrs() APIs
io/ sg-chain : ok | ARCH_HAS_SG_CHAIN # arch supports chained scatter-gather lists
lib/ strncasecmp : TODO | __HAVE_ARCH_STRNCASECMP # arch provides an optimized strncasecmp() function
locking/ cmpxchg-local : ok | HAVE_CMPXCHG_LOCAL # arch supports the this_cpu_cmpxchg() API
locking/ lockdep : ok | LOCKDEP_SUPPORT # arch supports the runtime locking correctness debug facility
locking/ queued-rwlocks : ok | ARCH_USE_QUEUED_RWLOCKS # arch supports queued rwlocks
locking/ queued-spinlocks : ok | ARCH_USE_QUEUED_SPINLOCKS # arch supports queued spinlocks
locking/ rwsem-optimized : ok | Optimized asm/rwsem.h # arch provides optimized rwsem APIs
perf/ kprobes-event : ok | HAVE_REGS_AND_STACK_ACCESS_API # arch supports kprobes with perf events
perf/ perf-regs : ok | HAVE_PERF_REGS # arch supports perf events register access
perf/ perf-stackdump : ok | HAVE_PERF_USER_STACK_DUMP # arch supports perf events stack dumps
sched/ numa-balancing : ok | ARCH_SUPPORTS_NUMA_BALANCING # arch supports NUMA balancing
seccomp/ seccomp-filter : ok | HAVE_ARCH_SECCOMP_FILTER # arch supports seccomp filters
time/ arch-tick-broadcast : TODO | ARCH_HAS_TICK_BROADCAST # arch provides tick_broadcast()
time/ clockevents : ok | GENERIC_CLOCKEVENTS # arch support generic clock events
time/ context-tracking : ok | HAVE_CONTEXT_TRACKING # arch supports context tracking for NO_HZ_FULL
time/ irq-time-acct : ok | HAVE_IRQ_TIME_ACCOUNTING # arch supports precise IRQ time accounting
time/ modern-timekeeping : ok | !ARCH_USES_GETTIMEOFFSET # arch does not use arch_gettimeoffset() anymore
time/ virt-cpuacct : ok | HAVE_VIRT_CPU_ACCOUNTING # arch supports precise virtual CPU time accounting
vm/ ELF-ASLR : ok | ARCH_HAS_ELF_RANDOMIZE # arch randomizes the stack, heap and binary images of ELF binaries
vm/ huge-vmap : ok | HAVE_ARCH_HUGE_VMAP # arch supports the ioremap_pud_enabled() and ioremap_pmd_enabled() VM APIs
vm/ ioremap_prot : ok | HAVE_IOREMAP_PROT # arch has ioremap_prot()
vm/ numa-memblock : ok | HAVE_MEMBLOCK_NODE_MAP # arch supports NUMA aware memblocks
vm/ PG_uncached : ok | ARCH_USES_PG_UNCACHED # arch supports the PG_uncached page flag
vm/ pmdp_splitting_flush : ok | __HAVE_ARCH_PMDP_SPLITTING_FLUSH # arch supports the pmdp_splitting_flush() VM API
vm/ pte_special : ok | __HAVE_ARCH_PTE_SPECIAL # arch supports the pte_special()/pte_mkspecial() VM APIs
vm/ THP : ok | HAVE_ARCH_TRANSPARENT_HUGEPAGE # arch supports transparent hugepages
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:44 +0000 (12:37 +0200)]
Documentation/features/core: Add feature description and arch support status file for 'BPF-JIT'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:43 +0000 (12:37 +0200)]
Documentation/features/locking: Add feature description and arch support status file for 'queued-rwlocks'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:42 +0000 (12:37 +0200)]
Documentation/features/locking: Add feature description and arch support status file for 'queued-spinlocks'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:40 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'gcov-profile-all'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:39 +0000 (12:37 +0200)]
Documentation/features/locking: Add feature description and arch support status file for 'cmpxchg-local'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:38 +0000 (12:37 +0200)]
Documentation/features/perf: Add feature description and arch support status file for 'perf-stackdump'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:37 +0000 (12:37 +0200)]
Documentation/features/perf: Add feature description and arch support status file for 'perf-regs'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:36 +0000 (12:37 +0200)]
Documentation/features/io: Add feature description and arch support status file for 'dma-api-debug'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:35 +0000 (12:37 +0200)]
Documentation/features/perf: Add feature description and arch support status file for 'kprobes-event'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:34 +0000 (12:37 +0200)]
Documentation/features/core: Add feature description and arch support status file for 'generic-idle-thread'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:33 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'user-ret-profiler'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:32 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'kretprobes'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:31 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'uprobes'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:29 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'kprobes-on-ftrace'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:28 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'optprobes'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:27 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'kprobes'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:26 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'arch-tick-broadcast'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:25 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'ELF-ASLR'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:24 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'clockevents'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:23 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'kgdb'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:22 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'context-tracking'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:21 +0000 (12:37 +0200)]
Documentation/features/seccomp: Add feature description and arch support status file for 'seccomp-filter'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:19 +0000 (12:37 +0200)]
Documentation/features/core: Add feature description and arch support status file for 'jump-labels'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:18 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'stackprotector'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:17 +0000 (12:37 +0200)]
Documentation/features/locking: Add feature description and arch support status file for 'lockdep'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:16 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'ioremap_prot'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:15 +0000 (12:37 +0200)]
Documentation/features/core: Add feature description and arch support status file for 'tracehook'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:14 +0000 (12:37 +0200)]
Documentation/features/io: Add feature description and arch support status file for 'dma_map_attrs'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:13 +0000 (12:37 +0200)]
Documentation/features/io: Add feature description and arch support status file for 'dma-contiguous'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:12 +0000 (12:37 +0200)]
Documentation/features/sched: Add feature description and arch support status file for 'numa-balancing'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:10 +0000 (12:37 +0200)]
Documentation/features/locking: Add feature description and arch support status file for 'rwsem-optimized'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:09 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'THP'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:07 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'irq-time-acct'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:05 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'virt-cpuacct'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:04 +0000 (12:37 +0200)]
Documentation/features/time: Add feature description and arch support status file for 'modern-timekeeping'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:03 +0000 (12:37 +0200)]
Documentation/features/debug: Add feature description and arch support status file for 'KASAN'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:02 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'pmdp_splitting_flush'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:01 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'pte_special'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:37:00 +0000 (12:37 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'huge-vmap'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:36:59 +0000 (12:36 +0200)]
Documentation/features/io: Add feature description and arch support status file for 'sg-chain'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:36:57 +0000 (12:36 +0200)]
Documentation/features/lib: Add feature description and arch support status file for 'strncasecmp'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:36:56 +0000 (12:36 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'PG_uncached'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Ingo Molnar [Wed, 3 Jun 2015 10:36:55 +0000 (12:36 +0200)]
Documentation/features/vm: Add feature description and arch support status file for 'numa-memblock'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Linus Torvalds [Tue, 2 Jun 2015 17:58:34 +0000 (10:58 -0700)]
Merge tag 'please-pull-rusty' of git://git./linux/kernel/git/aegl/linux
Pull ia64 fix from Tony Luck:
"Fix some build warnings for ia64 - cpu_callin_map doesn't need to be
volatile"
* tag 'please-pull-rusty' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux:
ia64: make cpu_callin_map non-volatile.
Sasha Levin [Wed, 28 Jan 2015 20:30:43 +0000 (15:30 -0500)]
vfs: read file_handle only once in handle_to_path
We used to read file_handle twice. Once to get the amount of extra
bytes, and once to fetch the entire structure.
This may be problematic since we do size verifications only after the
first read, so if the number of extra bytes changes in userspace between
the first and second calls, we'll have an incoherent view of
file_handle.
Instead, read the constant size once, and copy that over to the final
structure without having to re-read it again.
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jan Kara [Tue, 2 Jun 2015 15:10:28 +0000 (17:10 +0200)]
lib: Fix strnlen_user() to not touch memory after specified maximum
If the specified maximum length of the string is a multiple of unsigned
long, we would load one long behind the specified maximum. If that
happens to be in a next page, we can hit a page fault although we were
not expected to.
Fix the off-by-one bug in the test whether we are at the end of the
specified range.
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Rusty Russell [Mon, 1 Jun 2015 06:23:53 +0000 (15:53 +0930)]
ia64: make cpu_callin_map non-volatile.
cpumask_test_cpu() doesn't take volatile, unlike the obsoleted
cpu_isset. The only place ia64 really cares is the spin waiting for a
bit; udelay() is probably a barrier but insert barrier() to be sure.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Linus Torvalds [Tue, 2 Jun 2015 03:51:18 +0000 (20:51 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Various VTI tunnel (mark handling, PMTU) bug fixes from Alexander
Duyck and Steffen Klassert.
2) Revert ethtool PHY query change, it wasn't correct. The PHY address
selected by the driver running the PHY to MAC connection decides
what PHY address GET ethtool operations return information from.
3) Fix handling of sequence number bits for encryption IV generation in
ESP driver, from Herbert Xu.
4) UDP can return -EAGAIN when we hit a bad checksum on receive, even
when there are other packets in the receive queue which is wrong.
Just respect the error returned from the generic socket recv
datagram helper. From Eric Dumazet.
5) Fix BNA driver firmware loading on big-endian systems, from Ivan
Vecera.
6) Fix regression in that we were inheriting the congestion control of
the listening socket for new connections, the intended behavior
always was to use the default in this case. From Neal Cardwell.
7) Fix NULL deref in brcmfmac driver, from Arend van Spriel.
8) OTP parsing fix in iwlwifi from Liad Kaufman.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (26 commits)
vti6: Add pmtu handling to vti6_xmit.
Revert "net: core: 'ethtool' issue with querying phy settings"
bnx2x: Move statistics implementation into semaphores
xen: netback: read hotplug script once at start of day.
xen: netback: fix printf format string warning
Revert "netfilter: ensure number of counters is >0 in do_replace()"
net: dsa: Properly propagate errors from dsa_switch_setup_one
tcp: fix child sockets to use system default congestion control if not set
udp: fix behavior of wrong checksums
sfc: free multiple Rx buffers when required
bna: fix soft lock-up during firmware initialization failure
bna: remove unreasonable iocpf timer start
bna: fix firmware loading on big-endian machines
bridge: fix br_multicast_query_expired() bug
via-rhine: Resigning as maintainer
brcmfmac: avoid null pointer access when brcmf_msgbuf_get_pktid() fails
mac80211: Fix mac80211.h docbook comments
iwlwifi: nvm: fix otp parsing in 8000 hw family
iwlwifi: pcie: fix tracking of cmd_in_flight
ip_vti/ip6_vti: Preserve skb->mark after rcv_cb call
...
Linus Torvalds [Tue, 2 Jun 2015 03:44:51 +0000 (20:44 -0700)]
Merge git://git./linux/kernel/git/davem/sparc
Pull Sparc fixes from David Miller:
1) Setup the core/threads/sockets bitmaps correctly so that 'lscpus'
and friends operate properly. Frtom Chris Hyser.
2) The bit that normally means "Cached Virtually" on sun4v systems,
actually changes meaning in M7 and later chips. Fix from Khalid
Aziz.
3) One some PCI-E systems we need to probe different OF properties to
fill in the PCI slot information properly, from Eric Snowberg.
4) Kill an extraneous memset after kzalloc(), from Christophe Jaillet.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
sparc64: pci slots information is not populated in sysfs
sparc: kernel: GRPCI2: Remove a useless memset
sparc64: Setup sysfs to mark LDOM sockets, cores and threads correctly
Linus Torvalds [Tue, 2 Jun 2015 01:49:45 +0000 (18:49 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio fix from Michael Tsirkin:
"Last-minute virtio fix for 4.1
This tweaks an exported user-space header to fix build breakage for
userspace using it"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
include/uapi/linux/virtio_balloon.h: include linux/virtio_types.h
David S. Miller [Mon, 1 Jun 2015 23:56:43 +0000 (16:56 -0700)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf
Pablo Neira Ayuso says:
====================
Netfilter fix for net
The following patch reverts the ebtables chunk that enforces counters that was
introduced in the recently applied
d26e2c9ffa38 ('Revert "netfilter: ensure
number of counters is >0 in do_replace()"') since this breaks ebtables.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 1 Jun 2015 23:06:29 +0000 (16:06 -0700)]
Merge tag 'wireless-drivers-for-davem-2015-06-01' of git://git./linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
iwlwifi:
* fix OTP parsing 8260
* fix powersave handling for 8260
brcmfmac:
* fix null pointer crash
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Steffen Klassert [Fri, 29 May 2015 18:28:26 +0000 (11:28 -0700)]
vti6: Add pmtu handling to vti6_xmit.
We currently rely on the PMTU discovery of xfrm.
However if a packet is localy sent, the PMTU mechanism
of xfrm tries to to local socket notification what
might not work for applications like ping that don't
check for this. So add pmtu handling to vti6_xmit to
report MTU changes immediately.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 1 Jun 2015 21:43:50 +0000 (14:43 -0700)]
Revert "net: core: 'ethtool' issue with querying phy settings"
This reverts commit
f96dee13b8e10f00840124255bed1d8b4c6afd6f.
It isn't right, ethtool is meant to manage one PHY instance
per netdevice at a time, and this is selected by the SET
command. Therefore by definition the GET command must only
return the settings for the configured and selected PHY.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yuval Mintz [Mon, 1 Jun 2015 12:08:18 +0000 (15:08 +0300)]
bnx2x: Move statistics implementation into semaphores
Commit
dff173de84958 ("bnx2x: Fix statistics locking scheme") changed the
bnx2x locking around statistics state into using a mutex - but the lock
is being accessed via a timer which is forbidden.
[If compiled with CONFIG_DEBUG_MUTEXES, logs show a warning about
accessing the mutex in interrupt context]
This moves the implementation into using a semaphore [with size '1']
instead.
Signed-off-by: Yuval Mintz <Yuval.Mintz@qlogic.com>
Signed-off-by: Ariel Elior <Ariel.Elior@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ian Campbell [Mon, 1 Jun 2015 10:30:24 +0000 (11:30 +0100)]
xen: netback: read hotplug script once at start of day.
When we come to tear things down in netback_remove() and generate the
uevent it is possible that the xenstore directory has already been
removed (details below).
In such cases netback_uevent() won't be able to read the hotplug
script and will write a xenstore error node.
A recent change to the hypervisor exposed this race such that we now
sometimes lose it (where apparently we didn't ever before).
Instead read the hotplug script configuration during setup and use it
for the lifetime of the backend device.
The apparently more obvious fix of moving the transition to
state=Closed in netback_remove() to after the uevent does not work
because it is possible that we are already in state=Closed (in
reaction to the guest having disconnected as it shutdown). Being
already in Closed means the toolstack is at liberty to start tearing
down the xenstore directories. In principal it might be possible to
arrange to unregister the device sooner (e.g on transition to Closing)
such that xenstore would still be there but this state machine is
fragile and prone to anger...
A modern Xen system only relies on the hotplug uevent for driver
domains, when the backend is in the same domain as the toolstack it
will run the necessary setup/teardown directly in the correct sequence
wrt xenstore changes.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ian Campbell [Mon, 1 Jun 2015 10:30:04 +0000 (11:30 +0100)]
xen: netback: fix printf format string warning
drivers/net/xen-netback/netback.c: In function ‘xenvif_tx_build_gops’:
drivers/net/xen-netback/netback.c:1253:8: warning: format ‘%lu’ expects argument of type ‘long unsigned int’, but argument 5 has type ‘int’ [-Wformat=]
(txreq.offset&~PAGE_MASK) + txreq.size);
^
PAGE_MASK's type can vary by arch, so a cast is needed.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
----
v2: Cast to unsigned long, since PAGE_MASK can vary by arch.
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bernhard Thaler [Thu, 28 May 2015 08:26:18 +0000 (10:26 +0200)]
Revert "netfilter: ensure number of counters is >0 in do_replace()"
This partially reverts commit
1086bbe97a07 ("netfilter: ensure number of
counters is >0 in do_replace()") in net/bridge/netfilter/ebtables.c.
Setting rules with ebtables does not work any more with
1086bbe97a07 place.
There is an error message and no rules set in the end.
e.g.
~# ebtables -t nat -A POSTROUTING --src 12:34:56:78:9a:bc -j DROP
Unable to update the kernel. Two possible causes:
1. Multiple ebtables programs were executing simultaneously. The ebtables
userspace tool doesn't by default support multiple ebtables programs
running
Reverting the ebtables part of
1086bbe97a07 makes this work again.
Signed-off-by: Bernhard Thaler <bernhard.thaler@wvnet.at>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Mikko Rapeli [Sat, 30 May 2015 15:39:25 +0000 (17:39 +0200)]
include/uapi/linux/virtio_balloon.h: include linux/virtio_types.h
Fixes userspace compilation error:
error: unknown type name ‘__virtio16’
__virtio16 tag;
Signed-off-by: Mikko Rapeli <mikko.rapeli@iki.fi>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Khalid Aziz [Wed, 27 May 2015 16:00:46 +0000 (10:00 -0600)]
sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
sparc: Resolve conflict between sparc v9 and M7 on usage of bit 9 of TTE
Bit 9 of TTE is CV (Cacheable in V-cache) on sparc v9 processor while
the same bit 9 is MCDE (Memory Corruption Detection Enable) on M7
processor. This creates a conflicting usage of the same bit. Kernel
sets TTE.cv bit on all pages for sun4v architecture which works well
for sparc v9 but enables memory corruption detection on M7 processor
which is not the intent. This patch adds code to determine if kernel
is running on M7 processor and takes steps to not enable memory
corruption detection in TTE erroneously.
Signed-off-by: Khalid Aziz <khalid.aziz@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Snowberg [Wed, 27 May 2015 15:59:19 +0000 (11:59 -0400)]
sparc64: pci slots information is not populated in sysfs
Add PCI slot numbers within sysfs for PCIe hardware. Larger
PCIe systems with nested PCI bridges and slots further
down on these bridges were not being populated within sysfs.
This will add ACPI style PCI slot numbers for these systems
since the OF 'slot-names' information is not available on
all PCIe platforms.
Signed-off-by: Eric Snowberg <eric.snowberg@oracle.com>
Reviewed-by: Bob Picco <bob.picco@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Christophe Jaillet [Fri, 1 May 2015 12:05:39 +0000 (14:05 +0200)]
sparc: kernel: GRPCI2: Remove a useless memset
grpci2priv is allocated using kzalloc, so there is no need to memset it.
Signed-off-by: Christophe Jaillet <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Florian Fainelli [Fri, 29 May 2015 17:29:46 +0000 (10:29 -0700)]
net: dsa: Properly propagate errors from dsa_switch_setup_one
While shuffling some code around, dsa_switch_setup_one() was introduced,
and it was modified to return either an error code using ERR_PTR() or a
NULL pointer when running out of memory or failing to setup a switch.
This is a problem for its caler: dsa_switch_setup() which uses IS_ERR()
and expects to find an error code, not a NULL pointer, so we still try
to proceed with dsa_switch_setup() and operate on invalid memory
addresses. This can be easily reproduced by having e.g: the bcm_sf2
driver built-in, but having no such switch, such that drv->setup will
fail.
Fix this by using PTR_ERR() consistently which is both more informative
and avoids for the caller to use IS_ERR_OR_NULL().
Fixes: df197195a5248 ("net: dsa: split dsa_switch_setup into two functions")
Reported-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Neal Cardwell [Fri, 29 May 2015 17:47:07 +0000 (13:47 -0400)]
tcp: fix child sockets to use system default congestion control if not set
Linux 3.17 and earlier are explicitly engineered so that if the app
doesn't specifically request a CC module on a listener before the SYN
arrives, then the child gets the system default CC when the connection
is established. See tcp_init_congestion_control() in 3.17 or earlier,
which says "if no choice made yet assign the current value set as
default". The change ("net: tcp: assign tcp cong_ops when tcp sk is
created") altered these semantics, so that children got their parent
listener's congestion control even if the system default had changed
after the listener was created.
This commit returns to those original semantics from 3.17 and earlier,
since they are the original semantics from 2007 in
4d4d3d1e8 ("[TCP]:
Congestion control initialization."), and some Linux congestion
control workflows depend on that.
In summary, if a listener socket specifically sets TCP_CONGESTION to
"x", or the route locks the CC module to "x", then the child gets
"x". Otherwise the child gets current system default from
net.ipv4.tcp_congestion_control. That's the behavior in 3.17 and
earlier, and this commit restores that.
Fixes: 55d8694fa82c ("net: tcp: assign tcp cong_ops when tcp sk is created")
Cc: Florian Westphal <fw@strlen.de>
Cc: Daniel Borkmann <dborkman@redhat.com>
Cc: Glenn Judd <glenn.judd@morganstanley.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Sat, 30 May 2015 16:16:53 +0000 (09:16 -0700)]
udp: fix behavior of wrong checksums
We have two problems in UDP stack related to bogus checksums :
1) We return -EAGAIN to application even if receive queue is not empty.
This breaks applications using edge trigger epoll()
2) Under UDP flood, we can loop forever without yielding to other
processes, potentially hanging the host, especially on non SMP.
This patch is an attempt to make things better.
We might in the future add extra support for rt applications
wanting to better control time spent doing a recv() in a hostile
environment. For example we could validate checksums before queuing
packets in socket receive queue.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 1 Jun 2015 02:01:07 +0000 (19:01 -0700)]
Linux 4.1-rc6
Daniel Pieczko [Fri, 29 May 2015 11:25:54 +0000 (12:25 +0100)]
sfc: free multiple Rx buffers when required
When Rx packet data must be dropped, all the buffers
associated with that Rx packet must be freed. Extend
and rename efx_free_rx_buffer() to efx_free_rx_buffers()
and loop through all the fragments.
By doing so this patch fixes a possible memory leak.
Signed-off-by: Shradha Shah <sshah@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 31 May 2015 23:00:34 +0000 (16:00 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fix from Al Viro:
"Off-by-one in d_walk()/__dentry_kill() race fix.
It's very hard to hit; possible in the same conditions as the original
bug, except that you need the skipped branch to contain all the
remaining evictables, so that the d_walk()-calling loop in
d_invalidate() decides there's nothing more to do and doesn't go for
another pass - otherwise that next pass will sweep the sucker.
So it's not too urgent, but seeing that the fix is obvious and the
original commit has spread into all -stable branches..."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
d_walk() might skip too much
Linus Torvalds [Sun, 31 May 2015 19:20:59 +0000 (12:20 -0700)]
Merge branch 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Three fixes this time around:
- fix a memory leak which occurs when probing performance monitoring
unit interrupts
- fix handling of non-PMD aligned end of RAM causing boot failures
- fix missing syscall trace exit path with syscall tracing enabled
causing a kernel oops in the audit code"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: 8357/1: perf: fix memory leak when probing PMU PPIs
ARM: fix missing syscall trace exit
ARM: 8356/1: mm: handle non-pmd-aligned end of RAM
Linus Torvalds [Sun, 31 May 2015 19:03:42 +0000 (12:03 -0700)]
Merge branch 'upstream' of git://git./linux/kernel/git/ralf/linux
Pull MIPS fixes from Ralf Baechle:
"MIPS fixes for 4.1 all across the tree"
* 'upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/ralf/linux:
MIPS: strnlen_user.S: Fix a CPU_DADDI_WORKAROUNDS regression
MIPS: BMIPS: Fix bmips_wr_vec()
MIPS: ath79: fix build problem if CONFIG_BLK_DEV_INITRD is not set
MIPS: Fuloong 2E: Replace CONFIG_USB_ISP1760_HCD by CONFIG_USB_ISP1760
MIPS: irq: Use DECLARE_BITMAP
ttyFDC: Fix to use native endian MMIO reads
MIPS: Fix CDMM to use native endian MMIO reads
Linus Torvalds [Sun, 31 May 2015 18:39:25 +0000 (11:39 -0700)]
Merge branch 'turbostat' of git://git./linux/kernel/git/lenb/linux
Pull turbostat tool fixes from Len Brown:
"Just one minor kernel dependency in this batch -- added a #define to
msr-index.h"
* 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux:
tools/power turbostat: update version number to 4.7
tools/power turbostat: allow running without cpu0
tools/power turbostat: correctly decode of ENERGY_PERFORMANCE_BIAS
tools/power turbostat: enable turbostat to support Knights Landing (KNL)
tools/power turbostat: correctly display more than 2 threads/core
Linus Torvalds [Sun, 31 May 2015 18:31:42 +0000 (11:31 -0700)]
Merge git://git./linux/kernel/git/nab/target-pending
Pull SCSI target fixes from Nicholas Bellinger:
"These are mostly minor fixes, with the exception of the following that
address fall-out from recent v4.1-rc1 changes:
- regression fix related to the big fabric API registration changes
and configfs_depend_item() usage, that required cherry-picking one
of HCH's patches from for-next to address the issue for v4.1 code.
- remaining TCM-USER -v2 related changes to enforce full CDB
passthrough from Andy + Ilias.
Also included is a target_core_pscsi driver fix from Andy that
addresses a long standing issue with a Scsi_Host reference being
leaked on PSCSI device shutdown"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
iser-target: Fix error path in isert_create_pi_ctx()
target: Use a PASSTHROUGH flag instead of transport_types
target: Move passthrough CDB parsing into a common function
target/user: Only support full command pass-through
target/user: Update example code for new ABI requirements
target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST
target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem
target: Drop signal_pending checks after interruptible lock acquire
target: Add missing parentheses
target: Fix bidi command handling
target/user: Disallow full passthrough (pass_level=0)
ISCSI: fix minor memory leak
Linus Torvalds [Sun, 31 May 2015 18:24:49 +0000 (11:24 -0700)]
Merge tag 'hwmon-for-linus-v4.1-rc6' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Some late hwmon patches, all headed for -stable
- fix sysfs attribute initialization in nct6775 and nct6683 drivers
- do not attempt to auto-detect tmp435 on I2C address 0x37
- ensure iio channel is of type IIO_VOLTAGE in ntc_thermistor driver"
* tag 'hwmon-for-linus-v4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (nct6683) Add missing sysfs attribute initialization
hwmon: (nct6775) Add missing sysfs attribute initialization
hwmon: (tmp401) Do not auto-detect chip on I2C address 0x37
hwmon: (ntc_thermistor) Ensure iio channel is of type IIO_VOLTAGE
David S. Miller [Sun, 31 May 2015 06:46:54 +0000 (23:46 -0700)]
Merge branch 'bna-fixes'
Ivan Vecera says:
====================
bna: misc bugfixes
These patches fix several bugs found during device initialization debugging.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Thu, 28 May 2015 21:10:08 +0000 (23:10 +0200)]
bna: fix soft lock-up during firmware initialization failure
Bug in the driver initialization causes soft-lockup if firmware
initialization timeout is reached. Polling function bfa_ioc_poll_fwinit()
incorrectly calls bfa_nw_iocpf_timeout() when the timeout is reached.
The problem is that bfa_nw_iocpf_timeout() calls again
bfa_ioc_poll_fwinit()... etc. The bfa_ioc_poll_fwinit() should directly
send timeout event for iocpf and the same should be done if firmware
download into HW fails.
Cc: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Thu, 28 May 2015 21:10:07 +0000 (23:10 +0200)]
bna: remove unreasonable iocpf timer start
Driver starts iocpf timer prior bnad_ioceth_enable() call and this is
unreasonable. This piece of code probably originates from Brocade/Qlogic
out-of-box driver during initial import into upstream. This driver uses
only one timer and queue to implement multiple timers and this timer is
started at this place. The upstream driver uses multiple timers instead
of this.
Cc: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Vecera [Thu, 28 May 2015 21:10:06 +0000 (23:10 +0200)]
bna: fix firmware loading on big-endian machines
Firmware required by bna is stored in appropriate files as sequence
of LE32 integers. After loading by request_firmware() they need to be
byte-swapped on big-endian arches. Without this conversion the NIC
is unusable on big-endian machines.
Cc: Rasesh Mody <rasesh.mody@qlogic.com>
Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Sun, 31 May 2015 06:37:46 +0000 (23:37 -0700)]
Merge tag 'mac80211-for-davem-2015-05-28' of git://git./linux/kernel/git/jberg/mac80211
Johannes Berg says:
====================
This just has a single docbook build fix. In my confusion
I'd already sent the same fix for -next, but Ben Hutchings
noted it's necessary in 4.1.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Eric Dumazet [Thu, 28 May 2015 11:42:54 +0000 (04:42 -0700)]
bridge: fix br_multicast_query_expired() bug
br_multicast_query_expired() querier argument is a pointer to
a struct bridge_mcast_querier :
struct bridge_mcast_querier {
struct br_ip addr;
struct net_bridge_port __rcu *port;
};
Intent of the code was to clear port field, not the pointer to querier.
Fixes: 2cd4143192e8 ("bridge: memorize and export selected IGMP/MLD querier port")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Acked-by: Linus Lüssing <linus.luessing@c0d3.blue>
Cc: Linus Lüssing <linus.luessing@web.de>
Cc: Steinar H. Gunderson <sesse@samfundet.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Roland Dreier [Sat, 30 May 2015 06:12:10 +0000 (23:12 -0700)]
iser-target: Fix error path in isert_create_pi_ctx()
We don't assign pi_ctx to desc->pi_ctx until we're certain to succeed
in the function. That means the cleanup path should use the local
pi_ctx variable, not desc->pi_ctx.
This was detected by Coverity (CID
1260062).
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Andy Grover [Tue, 19 May 2015 21:44:41 +0000 (14:44 -0700)]
target: Use a PASSTHROUGH flag instead of transport_types
It seems like we only care if a transport is passthrough or not. Convert
transport_type to a flags field and replace TRANSPORT_PLUGIN_* with a
flag, TRANSPORT_FLAG_PASSTHROUGH.
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Andy Grover [Tue, 19 May 2015 21:44:40 +0000 (14:44 -0700)]
target: Move passthrough CDB parsing into a common function
Aside from whether they handle BIDI ops or not, parsing of the CDB by
kernel and user SCSI passthrough modules should be identical. Move this
into a new passthrough_parse_cdb() and call it from tcm-pscsi and tcm-user.
Reported-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Andy Grover [Tue, 19 May 2015 21:44:39 +0000 (14:44 -0700)]
target/user: Only support full command pass-through
After much discussion, give up on only passing a subset of SCSI commands
to userspace and pass them all. Based on what pscsi is doing, make sure
to set SCF_SCSI_DATA_CDB for I/O ops, and define attributes identical to
pscsi.
Make hw_block_size configurable via dev param.
Remove mention of command filtering from tcmu-design.txt.
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Andy Grover [Tue, 19 May 2015 21:44:38 +0000 (14:44 -0700)]
target/user: Update example code for new ABI requirements
We now require that the userspace handler set a bit if the command is not
handled.
Update calls to tcmu_hdr_get_op for v2.
Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Ilias Tsitsimpis <iliastsi@arrikto.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Andy Grover [Fri, 22 May 2015 21:07:44 +0000 (14:07 -0700)]
target/pscsi: Don't leak scsi_host if hba is VIRTUAL_HOST
See https://bugzilla.redhat.com/show_bug.cgi?id=
1025672
We need to put() the reference to the scsi host that we got in
pscsi_configure_device(). In VIRTUAL_HOST mode it is associated with
the dev_virt, not the hba_virt.
Signed-off-by: Andy Grover <agrover@redhat.com>
Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Christoph Hellwig [Sun, 3 May 2015 06:50:52 +0000 (08:50 +0200)]
target: Fix se_tpg_tfo->tf_subsys regression + remove tf_subsystem
There is just one configfs subsystem in the target code, so we might as
well add two helpers to reference / unreference it from the core code
instead of passing pointers to it around.
This fixes a regression introduced for v4.1-rc1 with commit
9ac8928e6,
where configfs_depend_item() callers using se_tpg_tfo->tf_subsys would
fail, because the assignment from the original target_core_subsystem[]
is no longer happening at target_register_template() time.
(Fix target_core_exit_configfs pointer dereference - Sagi)
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Himanshu Madhani <himanshu.madhani@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Guenter Roeck [Thu, 28 May 2015 16:12:23 +0000 (09:12 -0700)]
hwmon: (nct6683) Add missing sysfs attribute initialization
The following error message is seen when loading the nct6683 driver
with DEBUG_LOCK_ALLOC enabled.
BUG: key
ffff88040b2f0030 not in .data!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 186 at kernel/locking/lockdep.c:2988
lockdep_init_map+0x469/0x630()
DEBUG_LOCKS_WARN_ON(1)
Caused by a missing call to sysfs_attr_init() when initializing
sysfs attributes.
Reported-by: Alexey Orishko <alexey.orishko@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # v3.18+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Guenter Roeck [Thu, 28 May 2015 16:08:09 +0000 (09:08 -0700)]
hwmon: (nct6775) Add missing sysfs attribute initialization
The following error message is seen when loading the nct6775 driver
with DEBUG_LOCK_ALLOC enabled.
BUG: key
ffff88040b2f0030 not in .data!
------------[ cut here ]------------
WARNING: CPU: 0 PID: 186 at kernel/locking/lockdep.c:2988
lockdep_init_map+0x469/0x630()
DEBUG_LOCKS_WARN_ON(1)
Caused by a missing call to sysfs_attr_init() when initializing
sysfs attributes.
Reported-by: Alexey Orishko <alexey.orishko@gmail.com>
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # v3.12+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Linus Torvalds [Sat, 30 May 2015 00:09:39 +0000 (17:09 -0700)]
Merge tag 'acpi-pci-4.1-rc6' of git://git./linux/kernel/git/rafael/linux-pm
Pull PCI / ACPI fix from Rafael Wysocki:
"This fixes a bug uncovered by a recent driver core change that
modified the implementation of the ACPI_COMPANION_SET() macro to
strictly rely on its second argument to be either NULL or a valid
pointer to struct acpi_device.
As it turns out, pcibios_root_bridge_prepare() on x86 and ia64 works
with the assumption that the only code path calling pci_create_root_bus()
is pci_acpi_scan_root() and therefore the sysdata argument passed to
it will always match the expectations of pcibios_root_bridge_prepare().
That need not be the case, however, and in particular it is not the
case for the Xen pcifront driver that passes a pointer to its own
private data strcture as sysdata to pci_scan_bus_parented() which then
passes it to pci_create_root_bus() and it ends up being used incorrectly
by pcibios_root_bridge_prepare()"
* tag 'acpi-pci-4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PCI / ACPI: Do not set ACPI companions for host bridges with parents
Linus Torvalds [Fri, 29 May 2015 23:45:45 +0000 (16:45 -0700)]
Merge tag 'xfs-for-linus-4.1-rc6' of git://git./linux/kernel/git/dgc/linux-xfs
Pull xfs fixes from Dave Chinner:
"This is a little larger than I'd like late in the release cycle, but
all the fixes are for regressions introduced in the 4.1-rc1 merge, or
are needed back in -stable kernels fairly quickly as they are
filesystem corruption or userspace visible correctness issues.
Changes in this update:
- regression fix for new rename whiteout code
- regression fixes for new superblock generic per-cpu counter code
- fix for incorrect error return sign introduced in 3.17
- metadata corruption fixes that need to go back to -stable kernels"
* tag 'xfs-for-linus-4.1-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: fix broken i_nlink accounting for whiteout tmpfile inode
xfs: xfs_iozero can return positive errno
xfs: xfs_attr_inactive leaves inconsistent attr fork state behind
xfs: extent size hints can round up extents past MAXEXTLEN
xfs: inode and free block counters need to use __percpu_counter_compare
percpu_counter: batch size aware __percpu_counter_compare()
xfs: use percpu_counter_read_positive for mp->m_icount
Linus Torvalds [Fri, 29 May 2015 21:48:58 +0000 (14:48 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Arnd Bergmann:
"Two weeks worth of small bug fixes this time, nothing sticking out
this time:
- one defconfig change to adapt to a modified Kconfig symbol
- two fixes for i.MX for backwards compatibility with older DT files
that was accidentally broken
- one regression fix for irq handling on pxa
- three small dt files on omap, and one each for imx and exynos"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: multi_v7_defconfig: Replace CONFIG_USB_ISP1760_HCD by CONFIG_USB_ISP1760
ARM: imx6: gpc: don't register power domain if DT data is missing
ARM: imx6: allow booting with old DT
ARM: dts: set display clock correctly for exynos4412-trats2
ARM: pxa: pxa_cplds: signedness bug in probe
ARM: dts: Fix WLAN interrupt line for AM335x EVM-SK
ARM: dts: omap3-devkit8000: Fix NAND DT node
ARM: dts: am335x-boneblack: disable RTC-only sleep
ARM: dts: fix imx27 dtb build rule
ARM: dts: imx27: only map 4 Kbyte for fec registers
Linus Torvalds [Fri, 29 May 2015 21:39:24 +0000 (14:39 -0700)]
Merge tag 'dm-4.1-fixes-3' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device-mapper fixes from Mike Snitzer:
"Quite a few fixes for DM's blk-mq support thanks to extra DM multipath
testing from Junichi Nomura and Bart Van Assche.
Also fix a casting bug in dm_merge_bvec() that could cause only a
single page to be added to a bio (Joe identified this while testing
dm-cache writeback)"
* tag 'dm-4.1-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: fix casting bug in dm_merge_bvec()
dm: fix reload failure of 0 path multipath mapping on blk-mq devices
dm: fix false warning in free_rq_clone() for unmapped requests
dm: requeue from blk-mq dm_mq_queue_rq() using BLK_MQ_RQ_QUEUE_BUSY
dm mpath: fix leak of dm_mpath_io structure in blk-mq .queue_rq error path
dm: fix NULL pointer when clone_and_map_rq returns !DM_MAPIO_REMAPPED
dm: run queue on re-queue
Guenter Roeck [Wed, 27 May 2015 23:11:48 +0000 (16:11 -0700)]
hwmon: (tmp401) Do not auto-detect chip on I2C address 0x37
I2C address 0x37 may be used by EEPROMs, which can result in false
positives. Do not attempt to detect a chip at this address.
Reviewed-by: Jean Delvare <jdelvare@suse.de>
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Linus Torvalds [Fri, 29 May 2015 20:28:57 +0000 (13:28 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge misc fixes from Andrew Morton:
"10 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
scripts/gdb: fix lx-lsmod refcnt
omfs: fix potential integer overflow in allocator
omfs: fix sign confusion for bitmap loop counter
omfs: set error return when d_make_root() fails
fs, omfs: add NULL terminator in the end up the token list
MAINTAINERS: update CAPABILITIES pattern
fs/binfmt_elf.c:load_elf_binary(): return -EINVAL on zero-length mappings
tracing/mm: don't trace mm_page_pcpu_drain on offline cpus
tracing/mm: don't trace mm_page_free on offline cpus
tracing/mm: don't trace kmem_cache_free on offline cpus
Linus Torvalds [Fri, 29 May 2015 18:24:28 +0000 (11:24 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/rusty/linux
Pull fixes for cpumask and modules from Rusty Russell:
"** NOW WITH TESTING! **
Two fixes which got lost in my recent distraction. One is a weird
cpumask function which needed to be rewritten, the other is a module
bug which is cc:stable"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
cpumask_set_cpu_local_first => cpumask_local_spread, lament
module: Call module notifier on failure after complete_formation()
Maciej W. Rozycki [Thu, 28 May 2015 16:46:49 +0000 (17:46 +0100)]
MIPS: strnlen_user.S: Fix a CPU_DADDI_WORKAROUNDS regression
Correct a regression introduced with
8453eebd [MIPS: Fix strnlen_user()
return value in case of overlong strings.] causing assembler warnings
and broken code generated in __strnlen_kernel_nocheck_asm:
arch/mips/lib/strnlen_user.S: Assembler messages:
arch/mips/lib/strnlen_user.S:64: Warning: Macro instruction expanded into multiple instructions in a branch delay slot
with the CPU_DADDI_WORKAROUNDS option set, resulting in the function
looping indefinitely upon mounting NFS root.
Use conditional assembly to avoid a microMIPS code size regression.
Using $at unconditionally would cause such a regression as there are no
16-bit instruction encodings available for ALU operations using this
register. Using $v1 unconditionally would produce short microMIPS
encodings, but would prevent this register from being used across calls
to this function.
The extra LI operation introduced is free, replacing a NOP originally
scheduled into the delay slot of the branch that follows.
Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10205/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Petri Gynther [Wed, 27 May 2015 06:25:08 +0000 (23:25 -0700)]
MIPS: BMIPS: Fix bmips_wr_vec()
bmips_wr_vec() copies exception vector code from start to dst.
The call to dma_cache_wback() needs to flush (end-start) bytes,
starting at dst, from write-back cache to memory.
Signed-off-by: Petri Gynther <pgynther@google.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Kevin Cernekee <cernekee@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10193/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Laurent Fasnacht [Wed, 27 May 2015 17:50:00 +0000 (19:50 +0200)]
MIPS: ath79: fix build problem if CONFIG_BLK_DEV_INITRD is not set
initrd_start is defined in init/do_mounts_initrd.c, which is only
included in kernel if CONFIG_BLK_DEV_INITRD=y.
Signed-off-by: Laurent Fasnacht <l@libres.ch>
Cc: linux-mips@linux-mips.org
Cc: trivial@kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/10198/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Linus Torvalds [Fri, 29 May 2015 17:52:15 +0000 (10:52 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"This is made up 4 groups of fixes detailed below.
vgem:
Due to some misgivings about possible bad use cases this allow,
backout a chunk of the interface to stop those use cases for now.
radeon:
Fix for an oops regression in the audio code, and a partial revert
for a fix that was cauing problems.
nouveau:
regression fix for Fermi, and display-less Maxwell boot fixes.
drm core:
a fix for i915 cursor vblank waiting in the atomic helpers"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/gr/gm204: remove a stray printk
drm/nouveau/devinit/gm100-: force devinit table execution on boards without PDISP
drm/nouveau/devinit/gf100: make the force-post condition more obvious
drm/nouveau/gr/gf100-: fix wrong constant definition
drm/radeon: partially revert "fix VM_CONTEXT*_PAGE_TABLE_END_ADDR handling"
drm/radeon/audio: make sure connector is valid in hotplug case
Revert "drm/radeon: only mark audio as connected if the monitor supports it (v3)"
drm/radeon: don't share plls if monitors differ in audio support
drm/vgem: drop DRIVER_PRIME (v2)
drm/plane-helper: Adapt cursor hack to transitional helpers