- 31 10月, 2011 1 次提交
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由 Paul Gortmaker 提交于
The changed files were only including linux/module.h for the EXPORT_SYMBOL infrastructure, and nothing else. Revector them onto the isolated export header for faster compile times. Nothing to see here but a whole lot of instances of: -#include <linux/module.h> +#include <linux/export.h> This commit is only changing the kernel dir; next targets will probably be mm, fs, the arch dirs, etc. Signed-off-by: NPaul Gortmaker <paul.gortmaker@windriver.com>
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- 05 11月, 2010 1 次提交
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由 Jesper Juhl 提交于
We can optimize kernel/relay.c::relay_alloc_page_array() slightly by using vzalloc. The patch makes these changes: - use vzalloc instead of vmalloc+memset. - remove redundant local variable 'array'. - declare local 'pa_size' as const. Cuts down nicely on both source and object-code size. Signed-off-by: NJesper Juhl <jj@chaosbits.net> Acked-by: NPekka Enberg <penberg@kernel.org> Acked-by: NMathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 5月, 2010 1 次提交
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由 Akinobu Mita 提交于
By the previous modification, the cpu notifier can return encapsulate errno value. This converts the cpu notifiers for kernel/*.c Signed-off-by: NAkinobu Mita <akinobu.mita@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 22 5月, 2010 1 次提交
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由 Jens Axboe 提交于
This patch adds F_GETPIPE_SZ and F_SETPIPE_SZ fcntl() actions for growing and shrinking the size of a pipe and adjusts pipe.c and splice.c (and relay and network splice) usage to work with these larger (or smaller) pipes. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 07 3月, 2010 1 次提交
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由 Dan Carpenter 提交于
"ret" needs to be signed or the error handling for splice_to_pipe() won't work correctly. Signed-off-by: NDan Carpenter <error27@gmail.com> Cc: Tom Zanussi <zanussi@comcast.net> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 16 12月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 9月, 2009 1 次提交
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由 Alexey Dobriyan 提交于
* mark struct vm_area_struct::vm_ops as const * mark vm_ops in AGP code But leave TTM code alone, something is fishy there with global vm_ops being used. Signed-off-by: NAlexey Dobriyan <adobriyan@gmail.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 03 4月, 2009 1 次提交
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由 Aravind Srinivasan 提交于
Fix possible loss/corruption of produced subbufs in relay_subbufs_consumed(). When buf->subbufs_produced wraps around after UINT_MAX and buf->subbufs_consumed is still < UINT_MAX, the condition if (buf->subbufs_consumed > buf->subbufs_produced) will be true even for certain valid values of subbufs_consumed. This may lead to loss or corruption of produced subbufs. Signed-off-by: NAravind Srinivasan <raa.aars@gmail.com> Cc: Tom Zanussi <tzanussi@gmail.com> Cc: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 19 2月, 2009 1 次提交
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由 Ingo Molnar 提交于
Impact: new timer API Based on an idea from Martin Josefsson with the help of Patrick McHardy and Stephen Hemminger: introduce the mod_timer_pending() API which is a mod_timer() offspring that is an invariant on already removed timers. (regular mod_timer() re-activates non-pending timers.) This is useful for the networking code in that it can allow unserialized mod_timer_pending() timer-forwarding calls, but a single del_timer*() will stop the timer from being reactivated again. Also while at it: - optimize the regular mod_timer() path some more, the timer-stat and a debug check was needlessly duplicated in __mod_timer(). - make the exports come straight after the function, as most other exports in timer.c already did. - eliminate __mod_timer() as an external API, change the users to mod_timer(). The regular mod_timer() code path is not impacted significantly, due to inlining optimizations and due to the simplifications. Based-on-patch-from: Stephen Hemminger <shemminger@vyatta.com> Acked-by: NStephen Hemminger <shemminger@vyatta.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Patrick McHardy <kaber@trash.net> Cc: netdev@vger.kernel.org Cc: Oleg Nesterov <oleg@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 19 1月, 2009 1 次提交
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由 Jiri Slaby 提交于
One fail path in relay_late_setup_files() omits mutex_unlock(&relay_channels_mutex); Add it. Signed-off-by: NJiri Slaby <jirislaby@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 30 12月, 2008 1 次提交
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由 Ingo Molnar 提交于
Impact: turn boot crash into boot warning This BUG() can trigger: [ 16.684131] initcall fail_page_alloc_debugfs+0x0/0xc1 returned 0 after 0 usecs [ 16.692035] calling kmemtrace_setup_late+0x0/0xd5 @ 1 [ 16.700087] relay_late_setup_files: CPU 1 has no buffer, it must have! [ 16.704044] ------------[ cut here ]------------ [ 16.708030] kernel BUG at kernel/relay.c:680! [ 16.708030] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC [ 16.708030] last sysfs file: [ 16.708030] [ 16.708030] Pid: 1, comm: swapper Not tainted (2.6.28-tip-03903-g9a39f58-dirty #13207) System Product Name [ 16.708030] EIP: 0060:[<c01604ae>] EFLAGS: 00010246 CPU: 1 [ 16.708030] EIP is at relay_late_setup_files+0x8c/0x176 Reduce it to a more reportable WARN_ONCE(). Signed-off-by: NIngo Molnar <mingo@elte.hu>
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- 11 12月, 2008 1 次提交
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由 Tom Zanussi 提交于
Running kmemtraced, which uses splice() on relayfs, causes a hard lock on x86-64 SMP. As described by Tom Zanussi: It looks like you hit the same problem as described here: commit 8191ecd1 splice: fix infinite loop in generic_file_splice_read() relay uses the same loop but it never got noticed or fixed. Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Tested-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NTom Zanussi <tzanussi@gmail.com> Signed-off-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 18 11月, 2008 1 次提交
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由 Lai Jiangshan 提交于
relay_open() will close allocated buffers when failed. but if cpu offlined, some buffer will not be closed. this patch fixed it. and did cleanup for relay_reset() too. Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 06 8月, 2008 1 次提交
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由 Tom Zanussi 提交于
In relay's current read implementation, if the buffer is completely full but hasn't triggered the buffer-full condition (i.e. the last write didn't cross the subbuffer boundary) and the last subbuffer is exactly full, the subbuffer accounting code erroneously finds nothing available. This patch fixes the problem. Signed-off-by: NTom Zanussi <tzanussi@gmail.com> Cc: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Pekka Enberg <penberg@cs.helsinki.fi> Cc: Jens Axboe <jens.axboe@oracle.com> Cc: Mathieu Desnoyers <compudj@krystal.dyndns.org> Cc: Andrea Righi <righi.andrea@gmail.com> Cc: <stable@kernel.org> [2.6.25.x, 2.6.26.x] Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 27 7月, 2008 1 次提交
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Allows one to create and use a channel with no associated files. Files can be initialized later. This is useful in scenarios such as logging in early code, before VFS is up. Therefore, such channels can be created and used as soon as kmem_cache_init() completed. This is needed by kmemtrace to do tracing in early kernel code. [kosaki.motohiro@jp.fujitsu.com: build fix] Signed-off-by: NEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: NKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 28 5月, 2008 1 次提交
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由 Tom Zanussi 提交于
Splice isn't always incrementing the ppos correctly, which broke relay splice. Signed-off-by: NTom Zanussi <zanussi@comcast.net> Tested-by: NDan Williams <dan.j.williams@intel.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 08 5月, 2008 1 次提交
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由 Jens Axboe 提交于
This reverts commit c3270e57.
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- 29 4月, 2008 2 次提交
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由 Masami Hiramatsu 提交于
Use vmalloc() and memset() instead of kcalloc() to allocate a page* array when the array size is bigger than one page. This enables relayfs to support bigger relay buffers than 64MB on 4k-page system, 512MB on 16k-page system. [akpm@linux-foundation.org: cleanup] Signed-off-by: NMasami Hiramatsu <mhiramat@redhat.com> Cc: David Wilder <dwilder@us.ibm.com> Reviewed-by: NTom Zanussi <zanussi@comcast.net> Reviewed-by: NPekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tom Zanussi 提交于
Splice isn't always incrementing the ppos correctly, which broke relay splice. Signed-off-by: NTom Zanussi <zanussi@comcast.net> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 26 3月, 2008 2 次提交
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由 Jens Axboe 提交于
relay doesn't reference the pages it adds, however we need a non-NULL hook or splice_to_pipe() can oops. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Lai Jiangshan 提交于
I found that relay files can be read by pread(2). I fix it, for relay files are not capable of seeking. Signed-off-by: NLai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 17 3月, 2008 1 次提交
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由 Jens Axboe 提交于
If subbuf_pages was larger than the max number of pages the pipe buffer will hold, subbuf_splice_actor() would happily go beyond the array size. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 07 2月, 2008 1 次提交
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由 Nick Piggin 提交于
Convert relay from nopage to fault. Remove redundant vma range checks. Switch from OOM to SIGBUS if the resource is not available. Signed-off-by: NNick Piggin <npiggin@suse.de> Cc: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 04 2月, 2008 1 次提交
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由 Nick Piggin 提交于
Drivers that register a ->fault handler, but do not range-check the offset argument, must set VM_DONTEXPAND in the vm_flags in order to prevent an expanding mremap from overflowing the resource. I've audited the tree and attempted to fix these problems (usually by adding VM_DONTEXPAND where it is not obvious). Signed-off-by: NNick Piggin <npiggin@suse.de> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 19 10月, 2007 1 次提交
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由 Daniel Walker 提交于
Signed-off-by: NDaniel Walker <dwalker@mvista.com> Cc: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 01 8月, 2007 1 次提交
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由 Jesper Juhl 提交于
Coverity spotted what looks like a real possible case of using a variable after it has been freed. The problem is in kernel/relay.c::relay_open_buf() If the code hits "goto free_buf;" it ends up in this code : free_buf: relay_destroy_buf(buf); <--- calls kfree() on 'buf'. free_name: kfree(tmpname); end: return buf; <-- use after free of 'buf'. I read through the callers and they all handle a NULL return from this function as an error (and hitting the 'free_buf' label only happens on failure to chan->cb->create_buf_file(), so that looks like a clear error to me). The patch simply sets 'buf' to NULL after the call to relay_destroy_buf(buf); - as far as I can see that should take care of the problem. The patch also corrects a reference to a documentation file while I was at it. Note from Mathieu: the documentation reference change should have been done in a separate patch, but I guess no one will really care. Signed-off-by: NJesper Juhl <jesper.juhl@gmail.com> Acked-by: N"David J. Wilder" <wilder@us.ibm.com> Tested-by: N"David J. Wilder" <wilder@us.ibm.com> Signed-off-by: NMathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Cc: Tom Zanussi <zanussi@us.ibm.com> Cc: Karim Yaghmour <karim@opersys.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 20 7月, 2007 1 次提交
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由 Adrian Bunk 提交于
Signed-off-by: NAdrian Bunk <bunk@stusta.de> Cc: Tom Zanussi <zanussi@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 13 7月, 2007 2 次提交
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由 Tom Zanussi 提交于
Change comment from kerneldoc to normal. Signed-off-by: NTom Zanussi <zanussi@us.ibm.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Tom Zanussi 提交于
The current code that sets the read position in subbuf_splice_actor may give erroneous results if the buffer size isn't a power of 2. This patch fixes the problem. Signed-off-by: NTom Zanussi <zanussi@us.ibm.com> Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 10 7月, 2007 4 次提交
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由 Jens Axboe 提交于
The name 'pin' was badly chosen, it doesn't pin a pipe buffer in the most commonly used sense in the kernel. So change the name to 'confirm', after debating this issue with Hugh Dickins a bit. A good return from ->confirm() means that the buffer is really there, and that the contents are good. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
It cleans up the relay splice implementation a lot, and gets rid of a lot of internal pipe knowledge that should not be in there. Plus fixes for padding and partial first page (and lots more) from Tom Zanussi. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Jens Axboe 提交于
We need to move even more stuff into the header so that folks can use the splice_to_pipe() implementation instead of open-coding a lot of pipe knowledge (see relay implementation), so move to our own header file finally. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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由 Tom Zanussi 提交于
Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 29 6月, 2007 2 次提交
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由 Masami Hiramatsu 提交于
When I use relayfs with "overwrite" mode, read() still sets incorrect number of consumed bytes. Signed-off-by: NMasami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Acked-by: NTom Zanussi <zanussi@us.ibm.com> Acked-by: NDavid Wilder <dwilder@us.ibm.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 David Wilder 提交于
Fix a bug in the relay read interface causing the number of consumed bytes to be set incorrectly. Signed-off-by: NTom Zanussi <zanussi@us.ibm.com> Signed-off-by: NDavid Wilder <dwilder@us.ibm.com> Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 10 5月, 2007 2 次提交
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由 Rafael J. Wysocki 提交于
Since nonboot CPUs are now disabled after tasks and devices have been frozen and the CPU hotplug infrastructure is used for this purpose, we need special CPU hotplug notifications that will help the CPU-hotplug-aware subsystems distinguish normal CPU hotplug events from CPU hotplug events related to a system-wide suspend or resume operation in progress. This patch introduces such notifications and causes them to be used during suspend and resume transitions. It also changes all of the CPU-hotplug-aware subsystems to take these notifications into consideration (for now they are handled in the same way as the corresponding "normal" ones). [oleg@tv-sign.ru: cleanups] Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl> Cc: Gautham R Shenoy <ego@in.ibm.com> Cc: Pavel Machek <pavel@ucw.cz> Signed-off-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tom Zanussi 提交于
relay doesn't need to use schedule_delayed_work() for waking readers when a simple timer will do. Signed-off-by: NTom Zanussi <zanussi@comcast.net> Cc: Satyam Sharma <satyam.sharma@gmail.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 09 5月, 2007 1 次提交
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由 Michael Opdenacker 提交于
Signed-off-by: NMichael Opdenacker <michael@free-electrons.com> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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- 02 3月, 2007 1 次提交
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由 Randy Dunlap 提交于
Fix kernel-doc warnings in 2.6.20-git15 (lib/, mm/, kernel/, include/). Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 12 2月, 2007 1 次提交
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由 Robert P. J. Day 提交于
A variety of (mostly) innocuous fixes to the embedded kernel-doc content in source files, including: * make multi-line initial descriptions single line * denote some function names, constants and structs as such * change erroneous opening '/*' to '/**' in a few places * reword some text for clarity Signed-off-by: NRobert P. J. Day <rpjday@mindspring.com> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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