- 23 2月, 2017 38 次提交
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由 Vlastimil Babka 提交于
SLAB as part of its bootstrap pre-creates one kmalloc cache that can fit the kmem_cache_node management structure, and puts it into the generic kmalloc cache array (e.g. for 128b objects). The name of this cache is "kmalloc-node", which is confusing for readers of /proc/slabinfo as the cache is used for generic allocations (and not just the kmem_cache_node struct) and it appears as the kmalloc-128 cache is missing. An easy solution is to use the kmalloc-<size> name when pre-creating the cache, which we can get from the kmalloc_info array. Example /proc/slabinfo before the patch: ... kmalloc-256 1647 1984 256 16 1 : tunables 120 60 8 : slabdata 124 124 828 kmalloc-192 1974 1974 192 21 1 : tunables 120 60 8 : slabdata 94 94 133 kmalloc-96 1332 1344 128 32 1 : tunables 120 60 8 : slabdata 42 42 219 kmalloc-64 2505 5952 64 64 1 : tunables 120 60 8 : slabdata 93 93 715 kmalloc-32 4278 4464 32 124 1 : tunables 120 60 8 : slabdata 36 36 346 kmalloc-node 1352 1376 128 32 1 : tunables 120 60 8 : slabdata 43 43 53 kmem_cache 132 147 192 21 1 : tunables 120 60 8 : slabdata 7 7 0 After the patch: ... kmalloc-256 1672 2160 256 16 1 : tunables 120 60 8 : slabdata 135 135 807 kmalloc-192 1992 2016 192 21 1 : tunables 120 60 8 : slabdata 96 96 203 kmalloc-96 1159 1184 128 32 1 : tunables 120 60 8 : slabdata 37 37 116 kmalloc-64 2561 4864 64 64 1 : tunables 120 60 8 : slabdata 76 76 785 kmalloc-32 4253 4340 32 124 1 : tunables 120 60 8 : slabdata 35 35 270 kmalloc-128 1256 1280 128 32 1 : tunables 120 60 8 : slabdata 40 40 39 kmem_cache 125 147 192 21 1 : tunables 120 60 8 : slabdata 7 7 0 [vbabka@suse.cz: export the whole kmalloc_info structure instead of just a name accessor, per Christoph Lameter] Link: http://lkml.kernel.org/r/54e80303-b814-4232-66d4-95b34d3eb9d0@suse.cz Link: http://lkml.kernel.org/r/20170203181008.24898-1-vbabka@suse.czSigned-off-by: NVlastimil Babka <vbabka@suse.cz> Reviewed-by: NMatthew Wilcox <mawilcox@microsoft.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: David Rientjes <rientjes@google.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: Christoph Lameter <cl@linux.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Borislav Petkov 提交于
We wish to know who is doing such a thing. slab.c does this. Link: http://lkml.kernel.org/r/20170116091643.15260-1-bp@alien8.deSigned-off-by: NBorislav Petkov <bp@suse.de> Acked-by: NMichal Hocko <mhocko@suse.com> Acked-by: NVlastimil Babka <vbabka@suse.cz> Cc: Christoph Lameter <cl@linux.com> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Grygorii Maistrenko 提交于
In case CONFIG_SLUB_DEBUG_ON=n, find_mergeable() gets debug features from commandline but never checks if there are features from the SLAB_NEVER_MERGE set. As a result selected by slub_debug caches are always mergeable if they have been created without a custom constructor set or without one of the SLAB_* debug features on. This moves the SLAB_NEVER_MERGE check below the flags update from commandline to make sure it won't merge the slab cache if one of the debug features is on. Link: http://lkml.kernel.org/r/20170101124451.GA4740@lp-laptop-dSigned-off-by: NGrygorii Maistrenko <grygoriimkd@gmail.com> Reviewed-by: NPekka Enberg <penberg@kernel.org> Acked-by: NDavid Rientjes <rientjes@google.com> Acked-by: NChristoph Lameter <cl@linux.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Prarit Bhargava 提交于
When CONFIG_BOOTPARAM_HOTPLUG_CPU0 is enabled, the socket containing the boot cpu can be replaced. During the hot add event, the message NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter. is output implying that the NMI watchdog was disabled at some point. This is not the case and the message has caused confusion for users of systems that support the removal of the boot cpu socket. The watchdog code is coded to assume that cpu 0 is always the first cpu to initialize the watchdog, and the last to stop its watchdog thread. That is not the case for initializing if cpu 0 has been removed and added. The removal case has never been correct because the smpboot code will remove the watchdog threads starting with the lowest cpu number. This patch adds watchdog_cpus to track the number of cpus with active NMI watchdog threads so that the first and last thread can be used to set and clear the value of firstcpu_err. firstcpu_err is set when the first watchdog thread is enabled, and cleared when the last watchdog thread is disabled. Link: http://lkml.kernel.org/r/1480425321-32296-1-git-send-email-prarit@redhat.comSigned-off-by: NPrarit Bhargava <prarit@redhat.com> Acked-by: NDon Zickus <dzickus@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Tejun Heo <tj@kernel.org> Cc: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@linux.intel.com> Cc: Joshua Hunt <johunt@akamai.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Babu Moger <babu.moger@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Cong Wang 提交于
posix_acl_update_mode() could possibly clear 'acl', if so we leak the memory pointed by 'acl'. Save this pointer before calling posix_acl_update_mode() and release the memory if 'acl' really gets cleared. Link: http://lkml.kernel.org/r/1486678332-2430-1-git-send-email-xiyou.wangcong@gmail.comSigned-off-by: NCong Wang <xiyou.wangcong@gmail.com> Reported-by: NMark Salyzyn <salyzyn@android.com> Reviewed-by: NJan Kara <jack@suse.cz> Reviewed-by: NGreg Kurz <groug@kaod.org> Cc: Eric Van Hensbergen <ericvh@gmail.com> Cc: Ron Minnich <rminnich@sandia.gov> Cc: Latchesar Ionkov <lucho@ionkov.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tetsuo Handa 提交于
IOPRIO_WHO_USER case in sys_ioprio_set()/sys_ioprio_get() are using while_each_thread(), which is unsafe under RCU lock according to commit 0c740d0a ("introduce for_each_thread() to replace the buggy while_each_thread()"). Use for_each_thread() (via for_each_process_thread()) which is safe under RCU lock. Link: http://lkml.kernel.org/r/201702011947.DBD56740.OMVHOLOtSJFFFQ@I-love.SAKURA.ne.jp Link: http://lkml.kernel.org/r/1486041779-4401-1-git-send-email-penguin-kernel@I-love.SAKURA.ne.jpSigned-off-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Jens Axboe <axboe@kernel.dk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Davidlohr Bueso 提交于
Given that the arch does not add its own implementations, simply use the asm-generic/current.h (generic-y) header instead of duplicating code. Link: http://lkml.kernel.org/r/1485992878-4780-4-git-send-email-dave@stgolabs.netSigned-off-by: NDavidlohr Bueso <dbueso@suse.de> Cc: "James E.J. Bottomley" <jejb@parisc-linux.org> Cc: Helge Deller <deller@gmx.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Eric Ren 提交于
Commit 743b5f14 ("ocfs2: take inode lock in ocfs2_iop_set/get_acl()") results in a deadlock, as the author "Tariq Saeed" realized shortly after the patch was merged. The discussion happened here https://oss.oracle.com/pipermail/ocfs2-devel/2015-September/011085.html The reason why taking cluster inode lock at vfs entry points opens up a self deadlock window, is explained in the previous patch of this series. So far, we have seen two different code paths that have this issue. 1. do_sys_open may_open inode_permission ocfs2_permission ocfs2_inode_lock() <=== take PR generic_permission get_acl ocfs2_iop_get_acl ocfs2_inode_lock() <=== take PR 2. fchmod|fchmodat chmod_common notify_change ocfs2_setattr <=== take EX posix_acl_chmod get_acl ocfs2_iop_get_acl <=== take PR ocfs2_iop_set_acl <=== take EX Fixes them by adding the tracking logic (in the previous patch) for these funcs above, ocfs2_permission(), ocfs2_iop_[set|get]_acl(), ocfs2_setattr(). Link: http://lkml.kernel.org/r/20170117100948.11657-3-zren@suse.comSigned-off-by: NEric Ren <zren@suse.com> Reviewed-by: NJunxiao Bi <junxiao.bi@oracle.com> Reviewed-by: NJoseph Qi <jiangqi903@gmail.com> Cc: Mark Fasheh <mfasheh@versity.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Eric Ren 提交于
We are in the situation that we have to avoid recursive cluster locking, but there is no way to check if a cluster lock has been taken by a precess already. Mostly, we can avoid recursive locking by writing code carefully. However, we found that it's very hard to handle the routines that are invoked directly by vfs code. For instance: const struct inode_operations ocfs2_file_iops = { .permission = ocfs2_permission, .get_acl = ocfs2_iop_get_acl, .set_acl = ocfs2_iop_set_acl, }; Both ocfs2_permission() and ocfs2_iop_get_acl() call ocfs2_inode_lock(PR): do_sys_open may_open inode_permission ocfs2_permission ocfs2_inode_lock() <=== first time generic_permission get_acl ocfs2_iop_get_acl ocfs2_inode_lock() <=== recursive one A deadlock will occur if a remote EX request comes in between two of ocfs2_inode_lock(). Briefly describe how the deadlock is formed: On one hand, OCFS2_LOCK_BLOCKED flag of this lockres is set in BAST(ocfs2_generic_handle_bast) when downconvert is started on behalf of the remote EX lock request. Another hand, the recursive cluster lock (the second one) will be blocked in in __ocfs2_cluster_lock() because of OCFS2_LOCK_BLOCKED. But, the downconvert never complete, why? because there is no chance for the first cluster lock on this node to be unlocked - we block ourselves in the code path. The idea to fix this issue is mostly taken from gfs2 code. 1. introduce a new field: struct ocfs2_lock_res.l_holders, to keep track of the processes' pid who has taken the cluster lock of this lock resource; 2. introduce a new flag for ocfs2_inode_lock_full: OCFS2_META_LOCK_GETBH; it means just getting back disk inode bh for us if we've got cluster lock. 3. export a helper: ocfs2_is_locked_by_me() is used to check if we have got the cluster lock in the upper code path. The tracking logic should be used by some of the ocfs2 vfs's callbacks, to solve the recursive locking issue cuased by the fact that vfs routines can call into each other. The performance penalty of processing the holder list should only be seen at a few cases where the tracking logic is used, such as get/set acl. You may ask what if the first time we got a PR lock, and the second time we want a EX lock? fortunately, this case never happens in the real world, as far as I can see, including permission check, (get|set)_(acl|attr), and the gfs2 code also do so. [sfr@canb.auug.org.au remove some inlines] Link: http://lkml.kernel.org/r/20170117100948.11657-2-zren@suse.comSigned-off-by: NEric Ren <zren@suse.com> Reviewed-by: NJunxiao Bi <junxiao.bi@oracle.com> Reviewed-by: NJoseph Qi <jiangqi903@gmail.com> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Mark Fasheh <mfasheh@versity.com> Cc: Joel Becker <jlbec@evilplan.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Davidlohr Bueso 提交于
... it's already using the generic version anyways, so just drop the file as do the other archs that do not implement their own version of the current macro. Link: http://lkml.kernel.org/r/1485992878-4780-5-git-send-email-dave@stgolabs.netSigned-off-by: NDavidlohr Bueso <dbueso@suse.de> Cc: Chen Liqin <liqin.linux@gmail.com> Cc: Lennox Wu <lennox.wu@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Sudip Mukherjee 提交于
Some m32r builds were having a warning: arch/m32r/include/asm/cmpxchg.h:191:3: warning: value computed is not used arch/m32r/include/asm/cmpxchg.h:68:3: warning: value computed is not used Taking the idea from commit e001bbae ("ARM: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations") the m32r implementation is changed to use a similar construct with a compound expression instead of a typecast, which causes the compiler to not complain about an unused result. Link: http://lkml.kernel.org/r/1484432664-7015-1-git-send-email-sudipm.mukherjee@gmail.comSigned-off-by: NSudip Mukherjee <sudip.mukherjee@codethink.co.uk> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Davidlohr Bueso 提交于
Given that the arch does not add its own implementations, simply use the asm-generic/current.h (generic-y) header instead of duplicating code. Link: http://lkml.kernel.org/r/1482896994-25863-1-git-send-email-dave@stgolabs.netSigned-off-by: NDavidlohr Bueso <dbueso@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Hou Tao 提交于
Kconfig files under arch/ directory are ignored by all_kconfigs(), so include them for tags generation. Link: http://lkml.kernel.org/r/1486206053-38223-1-git-send-email-houtao1@huawei.comSigned-off-by: NHou Tao <houtao1@huawei.com> Cc: Michal Marek <mmarek@suse.com> Cc: Joe Perches <joe@perches.com> Cc: Mathieu Maret <mathieu.maret@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Cheah Kok Cheong 提交于
If no duplicates found, inform user. Link: http://lkml.kernel.org/r/1486391275-2843-1-git-send-email-thrust73@gmail.comSigned-off-by: NCheah Kok Cheong <thrust73@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tobias Klauser 提交于
Adjust checkstack.pl for the nios2 architecture. Link: http://lkml.kernel.org/r/20170116113052.15034-1-tklauser@distanz.chSigned-off-by: NTobias Klauser <tklauser@distanz.ch> Cc: Ley Foon Tan <lftan@altera.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Jean Delvare 提交于
* Add a few blank lines to improve readability. * Don't call cut 3 times when once is enough. * Drop a useless semicolon. Link: http://lkml.kernel.org/r/20170104140356.162abab2@endymionSigned-off-by: NJean Delvare <jdelvare@suse.de> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Fix up some incorrect typo-words. [akpm@linux-foundation.org: "licencing" is valid British spelling and should be kept, per Joe] Link: http://lkml.kernel.org/r/1486409689-23335-1-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Colin Ian King 提交于
Lately I've been cleaning up spelling mistakes in kernel error messages and here are some of the more common spelling mistakes that I've found which probably should be added to this list so we don't keep on seeing them appearing again. Link: http://lkml.kernel.org/r/20161209173326.17662-1-colin.king@canonical.comSigned-off-by: NColin Ian King <colin.king@canonical.com> Acked-by: NKees Cook <keescook@chromium.org> Cc: Joe Perches <joe@perches.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Daniel Thompson 提交于
Currently the tools/vm Makefile has a rather arbitrary implicit build rule; page-types is the first value in TARGETS so lets just build that one! Additionally there is no install rule and this is needed for make -C tools vm_install to work properly. Provide a more sensible implicit build rule and a new install rule. Note that the variables names used by the install rule (DESTDIR and sbindir) are copied from prior-art in tools/power/cpupower. Link: http://lkml.kernel.org/r/20170113165630.27541-1-daniel.thompson@linaro.orgSigned-off-by: NDaniel Thompson <daniel.thompson@linaro.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Miles Chen 提交于
Add comment for failure to check a map error to help driver developers. Link: http://lkml.kernel.org/r/1484622289-22085-1-git-send-email-miles.chen@mediatek.comSigned-off-by: NMiles Chen <miles.chen@mediatek.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dave Jiang 提交于
pmd_fault() and related functions really only need the vmf parameter since the additional parameters are all included in the vmf struct. Remove the additional parameter and simplify pmd_fault() and friends. Link: http://lkml.kernel.org/r/1484085142-2297-8-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NDave Jiang <dave.jiang@intel.com> Reviewed-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: NJan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Dave Jiang 提交于
Instead of passing in multiple parameters in the pmd_fault() handler, a vmf can be passed in just like a fault() handler. This will simplify code and remove the need for the actual pmd fault handlers to allocate a vmf. Related functions are also modified to do the same. [dave.jiang@intel.com: fix issue with xfs_tests stall when DAX option is off] Link: http://lkml.kernel.org/r/148469861071.195597.3619476895250028518.stgit@djiang5-desk3.ch.intel.com Link: http://lkml.kernel.org/r/1484085142-2297-7-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NDave Jiang <dave.jiang@intel.com> Reviewed-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: NJan Kara <jack@suse.cz> Cc: Dave Chinner <david@fromorbit.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Add tracepoints to dax_pmd_insert_mapping(), following the same logging conventions as the tracepoints in dax_iomap_pmd_fault(). Here is an example PMD fault showing the new tracepoints: big-1504 [001] .... 326.960743: xfs_filemap_pmd_fault: dev 259:0 ino 0x1003 big-1504 [001] .... 326.960753: dax_pmd_fault: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 big-1504 [001] .... 326.960981: dax_pmd_insert_mapping: dev 259:0 ino 0x1003 shared write address 0x10505000 length 0x200000 pfn 0x100600 DEV|MAP radix_entry 0xc000e big-1504 [001] .... 326.960986: dax_pmd_fault_done: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 NOPAGE Link: http://lkml.kernel.org/r/1484085142-2297-6-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: NJan Kara <jack@suse.cz> Acked-by: NSteven Rostedt <rostedt@goodmis.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Add tracepoints to dax_pmd_load_hole(), following the same logging conventions as the tracepoints in dax_iomap_pmd_fault(). Here is an example PMD fault showing the new tracepoints: read_big-1478 [004] .... 238.242188: xfs_filemap_pmd_fault: dev 259:0 ino 0x1003 read_big-1478 [004] .... 238.242191: dax_pmd_fault: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10400000 vm_start 0x10200000 vm_end 0x10600000 pgoff 0x200 max_pgoff 0x1400 read_big-1478 [004] .... 238.242390: dax_pmd_load_hole: dev 259:0 ino 0x1003 shared address 0x10400000 zero_page ffffea0002c20000 radix_entry 0x1e read_big-1478 [004] .... 238.242392: dax_pmd_fault_done: dev 259:0 ino 0x1003 shared ALLOW_RETRY|KILLABLE|USER address 0x10400000 vm_start 0x10200000 vm_end 0x10600000 pgoff 0x200 max_pgoff 0x1400 NOPAGE Link: http://lkml.kernel.org/r/1484085142-2297-5-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: NJan Kara <jack@suse.cz> Acked-by: NSteven Rostedt <rostedt@goodmis.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Add the new include/trace/events/fs_dax.h tracepoint header, the existing include/linux/dax.h header, update Matthew's email address and add myself as a maintainer for filesystem DAX. Link: http://lkml.kernel.org/r/1484085142-2297-4-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Suggested-by: NMatthew Wilcox <mawilcox@microsoft.com> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Jan Kara <jack@suse.cz> Cc: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Tracepoints are the standard way to capture debugging and tracing information in many parts of the kernel, including the XFS and ext4 filesystems. Create a tracepoint header for FS DAX and add the first DAX tracepoints to the PMD fault handler. This allows the tracing for DAX to be done in the same way as the filesystem tracing so that developers can look at them together and get a coherent idea of what the system is doing. I added both an entry and exit tracepoint because future patches will add tracepoints to child functions of dax_iomap_pmd_fault() like dax_pmd_load_hole() and dax_pmd_insert_mapping(). We want those messages to be wrapped by the parent function tracepoints so the code flow is more easily understood. Having entry and exit tracepoints for faults also allows us to easily see what filesystems functions were called during the fault. These filesystem functions get executed via iomap_begin() and iomap_end() calls, for example, and will have their own tracepoints. For PMD faults we primarily want to understand the type of mapping, the fault flags, the faulting address and whether it fell back to 4k faults. If it fell back to 4k faults the tracepoints should let us understand why. I named the new tracepoint header file "fs_dax.h" to allow for device DAX to have its own separate tracing header in the same directory at some point. Here is an example output for these events from a successful PMD fault: big-1441 [005] .... 32.582758: xfs_filemap_pmd_fault: dev 259:0 ino 0x1003 big-1441 [005] .... 32.582776: dax_pmd_fault: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 big-1441 [005] .... 32.583292: dax_pmd_fault_done: dev 259:0 ino 0x1003 shared WRITE|ALLOW_RETRY|KILLABLE|USER address 0x10505000 vm_start 0x10200000 vm_end 0x10700000 pgoff 0x200 max_pgoff 0x1400 NOPAGE Link: http://lkml.kernel.org/r/1484085142-2297-3-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Suggested-by: NDave Chinner <david@fromorbit.com> Reviewed-by: NJan Kara <jack@suse.cz> Acked-by: NSteven Rostedt <rostedt@goodmis.org> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Ross Zwisler 提交于
Patch series "DAX tracepoints, mm argument simplification", v4. This contains both my DAX tracepoint code and Dave Jiang's MM argument simplifications. Dave's code was written with my tracepoint code as a baseline, so it seemed simplest to keep them together in a single series. This patch (of 7): Add __print_flags_u64() and the helper trace_print_flags_seq_u64() in the same spirit as __print_symbolic_u64() and trace_print_symbols_seq_u64(). These functions allow us to print symbols associated with flags that are 64 bits wide even on 32 bit machines. These will be used by the DAX code so that we can print the flags set in a pfn_t such as PFN_SG_CHAIN, PFN_SG_LAST, PFN_DEV and PFN_MAP. Without this new function I was getting errors like the following when compiling for i386: include/linux/pfn_t.h:13:22: warning: large integer implicitly truncated to unsigned type [-Woverflow] #define PFN_SG_CHAIN (1ULL << (BITS_PER_LONG_LONG - 1)) ^ Link: http://lkml.kernel.org/r/1484085142-2297-2-git-send-email-ross.zwisler@linux.intel.comSigned-off-by: NRoss Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: NSteven Rostedt <rostedt@goodmis.org> Cc: Dave Chinner <david@fromorbit.com> Cc: Dave Jiang <dave.jiang@intel.com> Cc: Jan Kara <jack@suse.cz> Cc: Matthew Wilcox <mawilcox@microsoft.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty由 Linus Torvalds 提交于
Pull tty/serial driver updates from Greg KH: "Here is the big tty/serial driver patchset for 4.11-rc1. Not much here, but a lot of little fixes and individual serial driver updates all over the subsystem. Majority are for the sh-sci driver and platform (the arch-specific changes have acks from the maintainer). The start of the "serial bus" code is here as well, but nothing is converted to use it yet. That work is still ongoing, hopefully will start to show up across different subsystems for 4.12 (bluetooth is one major place that will be used.) All of these have been in linux-next for a while with no reported issues" * tag 'tty-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (109 commits) tty: pl011: Work around QDF2400 E44 stuck BUSY bit atmel_serial: Use the fractional divider when possible tty: Remove extra include in HVC console tty framework serial: exar: Enable MSI support serial: exar: Move register defines from uapi header to consumer site serial: pci: Remove unused pci_boards entries serial: exar: Move Commtech adapters to 8250_exar as well serial: exar: Fix feature control register constants serial: exar: Fix initialization of EXAR registers for ports > 0 serial: exar: Fix mapping of port I/O resources serial: sh-sci: fix hardware RX trigger level setting tty/serial: atmel: ensure state is restored after suspending serial: 8250_dw: Avoid "too much work" from bogus rx timeout interrupt serdev: ttyport: check whether tty_init_dev() fails serial: 8250_pci: make pciserial_detach_ports() static ARM: dts: STiH410-b2260: Enable HW flow-control ARM: dts: STiH407-family: Use new Pinctrl groups ARM: dts: STiH407-pinctrl: Add Pinctrl group for HW flow-control ARM: dts: STiH410-b2260: Identify the UART RTS line dt-bindings: serial: Update 'uart-has-rtscts' description ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging由 Linus Torvalds 提交于
Pull staging/iio driver updates from Greg KH: "Here is the big staging and iio driver patchsets for 4.11-rc1. We almost broke even this time around, with only a few thousand lines added overall, as we removed the old and obsolete i4l code, but added some new drivers for the RPi platform, as well as adding some new IIO drivers. All of these have been in linux-next for a while with no reported issues" * tag 'staging-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (669 commits) Staging: vc04_services: Fix the "space prohibited" code style errors Staging: vc04_services: Fix the "wrong indent" code style errors staging: octeon: Use net_device_stats from struct net_device Staging: rtl8192u: ieee80211: ieee80211.h - style fix Staging: rtl8192u: ieee80211: ieee80211_tx.c - style fix Staging: rtl8192u: ieee80211: rtl819x_BAProc.c - style fix Staging: rtl8192u: ieee80211: ieee80211_module.c - style fix Staging: rtl8192u: ieee80211: rtl819x_TSProc.c - style fix Staging: rtl8192u: r8192U.h - style fix Staging: rtl8192u: r8192U_core.c - style fix Staging: rtl8192u: r819xU_cmdpkt.c - style fix staging: rtl8192u: blank lines aren't necessary before a close brace '}' staging: rtl8192u: Adding space after enum and struct definition staging: rtl8192u: Adding space after struct definition Staging: ks7010: Add required and preferred spaces around operators Staging: ks7010: ks*: Remove redundant blank lines Staging: ks7010: ks*: Add missing blank lines after declarations staging: visorbus, replace init_timer with setup_timer staging: vt6656: rxtx.c Removed multiple dereferencing staging: vt6656: Alignment match open parenthesis ...
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由 Linus Torvalds 提交于
Merge tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core updates from Greg KH: "Here is the "small" driver core patches for 4.11-rc1. Not much here, some firmware documentation and self-test updates, a debugfs code formatting issue, and a new feature for call_usermodehelper to make it more robust on systems that want to lock it down in a more secure way. All of these have been linux-next for a while now with no reported issues" * tag 'driver-core-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: kernfs: handle null pointers while printing node name and path Introduce STATIC_USERMODEHELPER to mediate call_usermodehelper() Make static usermode helper binaries constant kmod: make usermodehelper path a const string firmware: revamp firmware documentation selftests: firmware: send expected errors to /dev/null selftests: firmware: only modprobe if driver is missing platform: Print the resource range if device failed to claim kref: prefer atomic_inc_not_zero to atomic_add_unless debugfs: improve formatting of debugfs_real_fops()
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc由 Linus Torvalds 提交于
Pull char/misc driver updates from Greg KH: "Here is the big char/misc driver patchset for 4.11-rc1. Lots of different driver subsystems updated here: rework for the hyperv subsystem to handle new platforms better, mei and w1 and extcon driver updates, as well as a number of other "minor" driver updates. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (169 commits) goldfish: Sanitize the broken interrupt handler x86/platform/goldfish: Prevent unconditional loading vmbus: replace modulus operation with subtraction vmbus: constify parameters where possible vmbus: expose hv_begin/end_read vmbus: remove conditional locking of vmbus_write vmbus: add direct isr callback mode vmbus: change to per channel tasklet vmbus: put related per-cpu variable together vmbus: callback is in softirq not workqueue binder: Add support for file-descriptor arrays binder: Add support for scatter-gather binder: Add extra size to allocator binder: Refactor binder_transact() binder: Support multiple /dev instances binder: Deal with contexts in debugfs binder: Support multiple context managers binder: Split flat_binder_object auxdisplay: ht16k33: remove private workqueue auxdisplay: ht16k33: rework input device initialization ...
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb由 Linus Torvalds 提交于
Pull USB/PHY updates from Greg KH: "Here is the big USB and PHY driver updates for 4.11-rc1. Nothing major, just the normal amount of churn in the usb gadget and dwc and xhci controllers, new device ids, new phy drivers, a new usb-serial driver, and a few other minor changes in different USB drivers. All have been in linux-next for a long time with no reported issues" * tag 'usb-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (265 commits) usb: cdc-wdm: remove logically dead code USB: serial: keyspan: drop header file USB: serial: io_edgeport: drop io-tables header file usb: musb: add code comment for clarification usb: misc: add USB251xB/xBi Hi-Speed Hub Controller Driver usb: misc: usbtest: remove redundant check on retval < 0 USB: serial: upd78f0730: sort device ids USB: serial: upd78f0730: add ID for EVAL-ADXL362Z ohci-hub: fix typo in dbg_port macro usb: musb: dsps: Manage CPPI 4.1 DMA interrupt in DSPS usb: musb: tusb6010: Clean up tusb_omap_dma structure usb: musb: cppi_dma: Clean up cppi41_dma_controller structure usb: musb: cppi_dma: Clean up cppi structure usb: musb: cppi41: Detect aborted transfers in cppi41_dma_callback() usb: musb: dma: Add a DMA completion platform callback drivers: usb: usbip: Add missing break statement to switch usb: mtu3: remove redundant dev_err call in get_ssusb_rscs() USB: serial: mos7840: fix another NULL-deref at open USB: serial: console: clean up sanity checks USB: serial: console: fix uninitialised spinlock ...
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux由 Linus Torvalds 提交于
Pull arm64 updates from Will Deacon: - Errata workarounds for Qualcomm's Falkor CPU - Qualcomm L2 Cache PMU driver - Qualcomm SMCCC firmware quirk - Support for DEBUG_VIRTUAL - CPU feature detection for userspace via MRS emulation - Preliminary work for the Statistical Profiling Extension - Misc cleanups and non-critical fixes * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (74 commits) arm64/kprobes: consistently handle MRS/MSR with XZR arm64: cpufeature: correctly handle MRS to XZR arm64: traps: correctly handle MRS/MSR with XZR arm64: ptrace: add XZR-safe regs accessors arm64: include asm/assembler.h in entry-ftrace.S arm64: fix warning about swapper_pg_dir overflow arm64: Work around Falkor erratum 1003 arm64: head.S: Enable EL1 (host) access to SPE when entered at EL2 arm64: arch_timer: document Hisilicon erratum 161010101 arm64: use is_vmalloc_addr arm64: use linux/sizes.h for constants arm64: uaccess: consistently check object sizes perf: add qcom l2 cache perf events driver arm64: remove wrong CONFIG_PROC_SYSCTL ifdef ARM: smccc: Update HVC comment to describe new quirk parameter arm64: do not trace atomic operations ACPI/IORT: Fix the error return code in iort_add_smmu_platform_device() ACPI/IORT: Fix iort_node_get_id() mapping entries indexing arm64: mm: enable CONFIG_HOLES_IN_ZONE for NUMA perf: xgene: Include module.h ...
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git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc由 Linus Torvalds 提交于
Pull ARC updates from Vineet Gupta: - Intc imporvements [Yuriy] - VDK platform updates [Alexey] * tag 'arc-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc: ARC: [plat-*] ARC_HAS_COH_CACHES no longer relevant ARCv2: intc: Delete useless comments in Device Trees ARCv2: IDU-intc: Delete deprecated parameters in Device Trees ARCv2: IDU-intc: mask all common interrupts by default ARCv2: IDU-intc: Use build registers for getting numbers of interrupts ARCv2: intc: Set default priority for all core interrupts ARCv2: intc: Use runtime value of irq count for setting up intc ARCv2: intc: Rework the build time irq count information ARC: [intc-*]: confine NR_CPU_IRQS to intc code ARCv2: intc: Use ARC_REG_STATUS32 for addressing STATUS32 reg arc: vdk: Add support of UIO arc: vdk: Add support of MMC controller arc: vdk: Disable halt on reset
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux由 Linus Torvalds 提交于
Pull powerpc updates from Michael Ellerman: "Highlights include: - Support for direct mapped LPC on POWER9, giving Linux direct access to devices that may be on there such as a UART. - Memory hotplug support for the Power9 Radix MMU. - Add new AUX vectors describing the processor's cache geometry, to be used by glibc. - The ability for a guest to ask the hypervisor to resize the guest's hash table, and in addition support for doing so automatically when memory is hotplugged into/out-of the guest. This allows the hash table to be sized based on the current memory usage of the guest, rather than the maximum possible memory usage. - Implementation of optprobes (kprobe optimisation) for powerpc. In addition there's the topic branch shared with the KVM tree, which includes support for guests to use the Radix MMU on Power9. Thanks to: Alistair Popple, Andrew Donnellan, Aneesh Kumar K.V, Anju T, Anton Blanchard, Benjamin Herrenschmidt, Chris Packham, Daniel Axtens, Daniel Borkmann, David Gibson, Finn Thain, Gautham R. Shenoy, Gavin Shan, Greg Kurz, Joel Stanley, John Allen, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring, Michael Neuling, Nathan Fontenot, Naveen N. Rao, Nicholas Piggin, Paul Mackerras, Ravi Bangoria, Reza Arbab, Shailendra Singh, Vaibhav Jain, Wei Yongjun" * tag 'powerpc-4.11-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (129 commits) powerpc/mm/radix: Skip ptesync in pte update helpers powerpc/mm/radix: Use ptep_get_and_clear_full when clearing pte for full mm powerpc/mm/radix: Update pte update sequence for pte clear case powerpc/mm: Update PROTFAULT handling in the page fault path powerpc/xmon: Fix data-breakpoint powerpc/mm: Fix build break with BOOK3S_64=n and MEMORY_HOTPLUG=y powerpc/mm: Fix build break when CMA=n && SPAPR_TCE_IOMMU=y powerpc/mm: Fix build break with RADIX=y & HUGETLBFS=n powerpc/pseries: Fix typo in parameter description powerpc/kprobes: Remove kprobe_exceptions_notify() kprobes: Introduce weak variant of kprobe_exceptions_notify() powerpc/ftrace: Fix confusing help text for DISABLE_MPROFILE_KERNEL powerpc/powernv: Fix opal_exit tracepoint opcode powerpc: Add a prototype for mcount() so it can be versioned powerpc: Drop GPL from of_node_to_nid() export to match other arches powerpc/kprobes: Optimize kprobe in kretprobe_trampoline() powerpc/kprobes: Implement Optprobes powerpc/kprobes: Fixes for kprobe_lookup_name() on BE powerpc: Add helper to check if offset is within relative branch range powerpc/bpf: Introduce __PPC_SH64() ...
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git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux由 Linus Torvalds 提交于
Pull s390 updates from Martin Schwidefsky: - New entropy generation for the pseudo random number generator. - Early boot printk output via sclp to help debug crashes on boot. This needs to be enabled with a kernel parameter. - Add proper no-execute support with a bit in the page table entry. - Bug fixes and cleanups. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (65 commits) s390/syscall: fix single stepped system calls s390/zcrypt: make ap_bus explicitly non-modular s390/zcrypt: Removed unneeded debug feature directory creation. s390: add missing "do {} while (0)" loop constructs to multiline macros s390/mm: add cond_resched call to kernel page table dumper s390: get rid of MACHINE_HAS_PFMF and MACHINE_HAS_HPAGE s390/mm: make memory_block_size_bytes available for !MEMORY_HOTPLUG s390: replace ACCESS_ONCE with READ_ONCE s390: Audit and remove any remaining unnecessary uses of module.h s390: mm: Audit and remove any unnecessary uses of module.h s390: kernel: Audit and remove any unnecessary uses of module.h s390/kdump: Use "LINUX" ELF note name instead of "CORE" s390: add no-execute support s390: report new vector facilities s390: use correct input data address for setup_randomness s390/sclp: get rid of common response code handling s390/sclp: don't add new lines to each printed string s390/sclp: make early sclp code readable s390/sclp: disable early sclp code as soon as the base sclp driver is active s390/sclp: move early printk code to drivers ...
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next由 Linus Torvalds 提交于
Pull networking updates from David Miller: "Highlights: 1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini Varadhan. 2) Simplify classifier state on sk_buff in order to shrink it a bit. From Willem de Bruijn. 3) Introduce SIPHASH and it's usage for secure sequence numbers and syncookies. From Jason A. Donenfeld. 4) Reduce CPU usage for ICMP replies we are going to limit or suppress, from Jesper Dangaard Brouer. 5) Introduce Shared Memory Communications socket layer, from Ursula Braun. 6) Add RACK loss detection and allow it to actually trigger fast recovery instead of just assisting after other algorithms have triggered it. From Yuchung Cheng. 7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot. 8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert. 9) Export MPLS packet stats via netlink, from Robert Shearman. 10) Significantly improve inet port bind conflict handling, especially when an application is restarted and changes it's setting of reuseport. From Josef Bacik. 11) Implement TX batching in vhost_net, from Jason Wang. 12) Extend the dummy device so that VF (virtual function) features, such as configuration, can be more easily tested. From Phil Sutter. 13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric Dumazet. 14) Add new bpf MAP, implementing a longest prefix match trie. From Daniel Mack. 15) Packet sample offloading support in mlxsw driver, from Yotam Gigi. 16) Add new aquantia driver, from David VomLehn. 17) Add bpf tracepoints, from Daniel Borkmann. 18) Add support for port mirroring to b53 and bcm_sf2 drivers, from Florian Fainelli. 19) Remove custom busy polling in many drivers, it is done in the core networking since 4.5 times. From Eric Dumazet. 20) Support XDP adjust_head in virtio_net, from John Fastabend. 21) Fix several major holes in neighbour entry confirmation, from Julian Anastasov. 22) Add XDP support to bnxt_en driver, from Michael Chan. 23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan. 24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi. 25) Support GRO in IPSEC protocols, from Steffen Klassert" * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits) Revert "ath10k: Search SMBIOS for OEM board file extension" net: socket: fix recvmmsg not returning error from sock_error bnxt_en: use eth_hw_addr_random() bpf: fix unlocking of jited image when module ronx not set arch: add ARCH_HAS_SET_MEMORY config net: napi_watchdog() can use napi_schedule_irqoff() tcp: Revert "tcp: tcp_probe: use spin_lock_bh()" net/hsr: use eth_hw_addr_random() net: mvpp2: enable building on 64-bit platforms net: mvpp2: switch to build_skb() in the RX path net: mvpp2: simplify MVPP2_PRS_RI_* definitions net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT net: mvpp2: remove unused register definitions net: mvpp2: simplify mvpp2_bm_bufs_add() net: mvpp2: drop useless fields in mvpp2_bm_pool and related code net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue' net: mvpp2: release reference to txq_cpu[] entry after unmapping net: mvpp2: handle too large value in mvpp2_rx_time_coal_set() net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set() net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set ...
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git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux由 Linus Torvalds 提交于
Pull gcc-plugins updates from Kees Cook: "This includes infrastructure updates and the structleak plugin, which performs forced initialization of certain structures to avoid possible information exposures to userspace. Summary: - infrastructure updates (gcc-common.h) - introduce structleak plugin for forced initialization of some structures" * tag 'gcc-plugins-v4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: gcc-plugins: Add structleak for more stack initialization gcc-plugins: consolidate on PASS_INFO macro gcc-plugins: add PASS_INFO and build_const_char_string()
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- 22 2月, 2017 2 次提交