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2011-05-23perf tools: Fix sample size bit operationsFrederic Weisbecker1-16/+16
What we want is to count the number of bits in the mask, not some other random operation written in the middle of the night. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1306148788-6179-2-git-send-email-fweisbec@gmail.com [ Fixed perf_event__names[] alignment which was nearby and hurting my eyes ... ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-23perf tools: Fix ommitted mmap data update on remapFrederic Weisbecker1-13/+26
Commit eac9eacee16 "perf tools: Check we are able to read the event size on mmap" brought a check to ensure we can read the size of the event before dereferencing it, and do a remap otherwise to move the buffer forward. However that remap was ommitting all the necessary work to update the new page offset, head, and to unmap previous pages, etc... To fix this, gather all the code that fetches the event in a seperate helper which does all the necessary checks about the header/event size and tells us anytime a remap is needed. Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1306148788-6179-3-git-send-email-fweisbec@gmail.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-23apm-emulation: apm_mutex breaks ACK; remove itPaul Parsons1-5/+0
apm_mutex is locked by a process (e.g. apm -s) at the start of apm_ioctl() and remains locked while pm_suspend() is called. Any subsequent process trying to ACK the suspend (e.g. apmd) is then blocked at the start of apm_ioctl(), causing the suspend to be delayed for 5 seconds in apm_suspend_notifier() while the ACK times out. In short, ACKs don't work. The driver's data structures are sufficiently protected by assorted locks. And pm_suspend() has its own mutex to prevent reentrancy. Consequently there is no obvious requirement for apm_mutex, which evolved from earlier BKL calls. So let's remove it. Signed-off-by: Paul Parsons <lost.distance@yahoo.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-23Merge branches 'doc', 'multitouch', 'upstream' and 'upstream-fixes' into ↵Jiri Kosina6300-86086/+197511
for-linus
2011-05-23watchdog: Change the default timeout and configure nmi watchdog period based ↵Mandeep Singh Baines3-7/+18
on watchdog_thresh Before the conversion of the NMI watchdog to perf event, the watchdog timeout was 5 seconds. Now it is 60 seconds. For my particular application, netbooks, 5 seconds was a better timeout. With a short timeout, we catch faults earlier and are able to send back a panic. With a 60 second timeout, the user is unlikely to wait and will instead hit the power button, causing us to lose the panic info. This change configures the NMI period to watchdog_thresh and sets the softlockup_thresh to watchdog_thresh * 2. In addition, watchdog_thresh was reduced to 10 seconds as suggested by Ingo Molnar. Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1306127423-3347-4-git-send-email-msb@chromium.org Signed-off-by: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20110517071642.GF22305@elte.hu>
2011-05-23watchdog: Disable watchdog when thresh is zeroMandeep Singh Baines4-23/+20
This restores the previous behavior of softlock_thresh. Currently, setting watchdog_thresh to zero causes the watchdog kthreads to consume a lot of CPU. In addition, the logic of proc_dowatchdog_thresh and proc_dowatchdog_enabled has been factored into proc_dowatchdog. Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1306127423-3347-3-git-send-email-msb@chromium.org Signed-off-by: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20110517071018.GE22305@elte.hu>
2011-05-23watchdog: Only disable/enable watchdog if neccessaryMandeep Singh Baines1-8/+12
Don't take any action on an unsuccessful write to /proc. Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1306127423-3347-2-git-send-email-msb@chromium.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-23watchdog: Fix rounding bug in get_sample_period()Mandeep Singh Baines1-1/+1
In get_sample_period(), softlockup_thresh is integer divided by 5 before the multiplication by NSEC_PER_SEC. This results in softlockup_thresh being rounded down to the nearest integer multiple of 5. For example, a softlockup_thresh of 4 rounds down to 0. Signed-off-by: Mandeep Singh Baines <msb@chromium.org> Cc: Marcin Slusarz <marcin.slusarz@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Link: http://lkml.kernel.org/r/1306127423-3347-1-git-send-email-msb@chromium.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-23b43: fix comment typo reqest -> requestJim Cromie1-2/+2
Recent trivial fix corrected 'occured', but left 'reqest'. codespell needs another dictionary entry. cc: Lucas De Marchi <lucas.demarchi@profusion.mobi> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-23HID: hid-multitouch: cosmetic changes, sort classes and devicesBenjamin Tissoires2-48/+54
This patch sorts the defs for the MT_CLS. I choose to split generic classes and device specific ones to be able to add more generic classes in the future. It also put eGalax devices at their right place (alphabetically) in mt_devices. Signed-off-by: Benjamin Tissoires <benjamin.tissoires@enac.fr> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2011-05-23sh: Ignore R_SH_NONE module relocations.Paul Mundt1-0/+2
Some modules may end up with R_SH_NONE relocs with the right combination of compiler/kernel config (specifically dwarf unwinder), so simply trap and ignore them instead of letting them get down to the error path. Reported-by: Carmelo AMOROSO <carmelo.amoroso@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23sh_mobile: Add MSTP clock for MERAMDamian1-1/+3
Signed-off-by: Damian Hobson-Garcia <dhobsong@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23SH: SE7751: Fix pcibios_map_platform_irq prototype.Ralf Baechle1-1/+1
Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23Merge branch 'for-linus' of ↵Linus Torvalds27-386/+603
git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: nilfs2: use mark_buffer_dirty to mark btnode or meta data dirty nilfs2: always set back pointer to host inode in mapping->host nilfs2: get rid of NILFS_I_NILFS nilfs2: use list_first_entry nilfs2: use empty_aops for gc-inodes nilfs2: implement resize ioctl nilfs2: add truncation routine of segment usage file nilfs2: add routine to move secondary super block nilfs2: add ioctl which limits range of segment to be allocated nilfs2: zero fill unused portion of super root block nilfs2: super root size should change depending on inode size nilfs2: get rid of private page allocator nilfs2: merge list_del()/list_add_tail() to list_move_tail()
2011-05-23sh: remove warning and warning_symbol from struct stacktrace_opsRichard Weinberger5-56/+0
Both warning and warning_symbol are nowhere used. Let's get rid of them. Signed-off-by: Richard Weinberger <richard@nod.at> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23sh: wire up sys_sendmmsg.Paul Mundt4-2/+6
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23clocksource: sh_tmu: Runtime PM supportMagnus Damm1-2/+10
Add Runtime PM support to the TMU driver. The hardware device is enabled as long as the clocksource or the clockevent portion of the driver is used. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23clocksource: sh_tmu: __clocksource_updatefreq_hz() updateMagnus Damm1-11/+8
This patch updates the clocksource part of the TMU driver to make use of the __clocksource_updatefreq_hz() function. Without this patch the old code uses clocksource_register() together with a hack that assumes a never changing clock rate (see clk_enable(), clk_get_rate() and clk_disable()). The patch uses clocksource_register_hz() with 1 Hz as initial value, then lets the ->enable() callback update the value with __clocksource_updatefreq_hz() once the struct clk has been enabled and the frequency is stable. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23clocksource: sh_cmt: Runtime PM supportMagnus Damm1-2/+10
Add Runtime PM support to the CMT driver. The hardware device is enabled as long as the clocksource or the clockevent portion of the driver is used. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23clocksource: sh_cmt: __clocksource_updatefreq_hz() updateMagnus Damm1-12/+7
This patch updates the clocksource part of the CMT driver to make use of the __clocksource_updatefreq_hz() function. Without this patch the old code uses clocksource_register() together with a hack that assumes a never changing clock rate (see clk_enable(), clk_get_rate() and clk_disable()). The patch uses clocksource_register_hz() with 1 Hz as initial value, then lets the ->enable() callback update the value with __clocksource_updatefreq_hz() once the struct clk has been enabled and the frequency is stable. Signed-off-by: Magnus Damm <damm@opensource.se> Acked-by: John Stultz <johnstul@us.ibm.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6Linus Torvalds5-7/+7
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide-2.6: ide/ide-scan-pci.c: Use for_each_pci_dev(). ide: Use linux/mutex.h IDE: ide-floppy, remove unnecessary NULL check drivers/ide/pmac.c: Remove unnecessary casts of pci_get_drvdata ide: fix use after free in ide-acpi
2011-05-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6Linus Torvalds55-1684/+1553
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-next-2.6: (28 commits) sparc32: fix build, fix missing cpu_relax declaration SCHED_TTWU_QUEUE is not longer needed since sparc32 now implements IPI sparc32,leon: Remove unnecessary page_address calls in LEON DMA API. sparc: convert old cpumask API into new one sparc32, sun4d: Implemented SMP IPIs support for SUN4D machines sparc32, sun4m: Implemented SMP IPIs support for SUN4M machines sparc32,leon: Implemented SMP IPIs for LEON CPU sparc32: implement SMP IPIs using the generic functions sparc32,leon: SMP power down implementation sparc32,leon: added some SMP comments sparc: add {read,write}*_be routines sparc32,leon: don't rely on bootloader to mask IRQs sparc32,leon: operate on boot-cpu IRQ controller registers sparc32: always define boot_cpu_id sparc32: removed unused code, implemented by generic code sparc32: avoid build warning at mm/percpu.c:1647 sparc32: always register a PROM based early console sparc32: probe for cpu info only during startup sparc: consolidate show_cpuinfo in cpu.c sparc32,leon: implement genirq CPU affinity ...
2011-05-23Merge branch 'for-linus' of git://neil.brown.name/mdLinus Torvalds8-534/+535
* 'for-linus' of git://neil.brown.name/md: md: allow resync_start to be set while an array is active. md/raid10: reformat some loops with less indenting. md/raid10: remove unused variable. md/raid10: make more use of 'slot' in raid10d. md/raid10: some tidying up in fix_read_error md/raid1: improve handling of pages allocated for write-behind. md/raid1: try fix_sync_read_error before process_checks. md/raid1: tidy up new functions: process_checks and fix_sync_read_error. md/raid1: split out two sub-functions from sync_request_write md: make error_handler functions more uniform and correct. md/multipath: discard ->working_disks in favour of ->degraded md/raid1: clean up read_balance. md: simplify raid10 read_balance md/bitmap: fix saving of events_cleared and other state. md: reject a re-add request that cannot be honoured. md: Fix race when creating a new md device.
2011-05-23wireless: fix fatal kernel-doc error + warning in mac80211.hRandy Dunlap1-1/+2
Fix new kernel-doc Error and Warning in <net/mac80211.h>: Error(linux-2.6.39-git5/include/net/mac80211.h:550): cannot understand prototype: 'struct ieee80211_sched_scan_ies ' Warning(linux-2.6.39-git5/include/net/mac80211.h:2289): No description found for parameter 'sta' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23x86: setup_smep needs to be __cpuinitLinus Torvalds1-2/+2
The setup_smep function gets calle at resume time too, and is thus not a pure __init function. When marked as __init, it gets thrown out after the kernel has initialized, and when the kernel is suspended and resumed, the code will no longer be around, and we'll get a nice "kernel tried to execute NX-protected page" oops because the page is no longer marked executable. Reported-and-tested-by: Parag Warudkar <parag.lkml@gmail.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: "H. Peter Anvin" <hpa@linux.intel.com> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23Remove prefetch() from <linux/skbuff.h> and "netlabel_addrlist.h"Linus Torvalds2-8/+7
Commit e66eed651fd1 ("list: remove prefetching from regular list iterators") removed the include of prefetch.h from list.h. The skbuff list traversal still had them. Quoth David Miller: "Please just remove the prefetches. Those are modelled after list.h as I intend to eventually convert SKB list handling to "struct list_head" but we're not there yet. Therefore if we kill prefetches from list.h we should kill it from these things in skbuff.h too." Requested-by: David Miller <davem@davemloft.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23Add appropriate <linux/prefetch.h> include for prefetch usersPaul Gortmaker38-0/+38
After discovering that wide use of prefetch on modern CPUs could be a net loss instead of a win, net drivers which were relying on the implicit inclusion of prefetch.h via the list headers showed up in the resulting cleanup fallout. Give them an explicit include via the following $0.02 script. ========================================= #!/bin/bash MANUAL="" for i in `git grep -l 'prefetch(.*)' .` ; do grep -q '<linux/prefetch.h>' $i if [ $? = 0 ] ; then continue fi ( echo '?^#include <linux/?a' echo '#include <linux/prefetch.h>' echo . echo w echo q ) | ed -s $i > /dev/null 2>&1 if [ $? != 0 ]; then echo $i needs manual fixup MANUAL="$i $MANUAL" fi done echo ------------------- 8\<---------------------- echo vi $MANUAL ========================================= Signed-off-by: Paul <paul.gortmaker@windriver.com> [ Fixed up some incorrect #include placements, and added some non-network drivers and the fib_trie.c case - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-23sparc32: fix build, fix missing cpu_relax declarationSam Ravnborg1-0/+1
Fix following sparc (32 bit) build error: CC arch/sparc/kernel/asm-offsets.s In file included from include/linux/seqlock.h:29:0, from include/linux/time.h:8, from include/linux/timex.h:56, from include/linux/sched.h:57, from arch/sparc/kernel/asm-offsets.c:13: include/linux/spinlock.h: In function 'spin_unlock_wait': include/linux/spinlock.h:360:2: error: implicit declaration of function 'cpu_relax' Most likely caused by commit e66eed651fd1 ("list: remove prefetching from regular list iterators") due to include changes. Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23dmaengine: shdma: synchronize RCU before freeing, simplify spinlockGuennadi Liakhovetski1-8/+8
List elements, deleted using list_del_rcu(), cannot be freed without synchronising RCU. Further, the spinlock, used to protect the RCU writer, is called in process context, so, we don't have to save flags. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23dmaengine: shdma: add runtime- and system-level power managementGuennadi Liakhovetski2-0/+69
This patch extends and fixes runtime power management in the shdma driver to support powering down the DMA controller and adds support for system-level suspend and resume. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23dmaengine: shdma: fix lockingGuennadi Liakhovetski1-36/+68
Close multiple theoretical races, especially the one in .device_free_chan_resources(). Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23sh: sh-sci: sh7377 and sh73a0 build fixesMagnus Damm1-8/+8
Fix sh7377 and sh73a0 build failure: drivers/tty/serial/sh-sci.c: In function 'scif_txfill': drivers/tty/serial/sh-sci.c:338: error: implicit declaration of function 'sci_SCTFDR_in' drivers/tty/serial/sh-sci.c: In function 'scif_rxfill': drivers/tty/serial/sh-sci.c:351: error: implicit declaration of function 'sci_SCRFDR_in' make[3]: *** [drivers/tty/serial/sh-sci.o] Error 1 make[2]: *** [drivers/tty/serial] Error 2 make[1]: *** [drivers/tty] Error 2 make: *** [drivers] Error 2 Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23sh: cosmetic improvement: use an existing pointerGuennadi Liakhovetski1-3/+3
Use an existing local variable, instead of calculating the pointer multiple times explicitly. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Simon Horman <horms@verge.net.au> Cc: Magnus Damm <damm@opensource.se> Reviewed-by: Simon Horman <horms@verge.net.au> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23serial: sh-sci: suspend/resume wakeup support V2Magnus Damm1-1/+1
This patch adds wakeup support to the sh-sci driver. The serial core deals with all details but defaults to wakeup disabled. So to make use of this feature enable wakeup in sysfs: echo enabled > /sys/class/tty/ttySC0/power/wakeup Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23serial: sh-sci: Runtime PM supportMagnus Damm1-0/+14
Add support for Runtime PM in the sh-sci driver. Signed-off-by: Magnus Damm <damm@opensource.se> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2011-05-23Merge branch 'sh/genirq-threading' into sh-latestPaul Mundt2-0/+6
2011-05-23Merge branch 'master' of ↵Paul Mundt3123-106398/+191780
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into sh-latest
2011-05-23bnx2x: allow device properly initialize after hotplugDmitry Kravkov1-43/+24
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23bnx2x: fix DMAE timeout according to hw specificationsDmitry Kravkov1-1/+1
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23bnx2x: properly handle CFC DEL in cnic flowVladislav Zolotarov1-1/+2
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23bnx2x: call dev_kfree_skb_any instead of dev_kfree_skbVladislav Zolotarov2-3/+3
replace function calls when possible call in both irq/non-irq contexts Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com> Signed-off-by: Eilon Greenstein <eilong@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: filter: move forward declarations to avoid compile warningsHeiko Carstens1-3/+4
Get rid of this compile warning: In file included from arch/s390/kernel/compat_linux.c:37:0: include/linux/filter.h:139:23: warning: 'struct sk_buff' declared inside parameter list Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23pktgen: refactor pg_init() codeWANG Cong1-7/+12
This also shrinks the object size a little. text data bss dec hex filename 28834 186 8 29028 7164 net/core/pktgen.o 28816 186 8 29010 7152 net/core/pktgen.o.AFTER Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: "David Miller" <davem@davemloft.net>, Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23pktgen: use vzalloc_node() instead of vmalloc_node() + memset()WANG Cong1-2/+1
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: skb_trim explicitely check the linearity instead of data_lenEmmanuel Grumbach1-1/+1
The purpose of the check on data_len is to check linearity, so use the inline helper for this. No overhead and more explicit. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23ipv4: Give backtrace in ip_rt_bug().Dave Jones1-0/+1
Add a stack backtrace to the ip_rt_bug path for debugging Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: avoid synchronize_rcu() in dev_deactivate_manyEric Dumazet1-2/+15
dev_deactivate_many() issues one synchronize_rcu() call after qdiscs set to noop_qdisc. This call is here to make sure they are no outstanding qdisc-less dev_queue_xmit calls before returning to caller. But in dismantle phase, we dont have to wait, because we wont activate again the device, and we are going to wait one rcu grace period later in rollback_registered_many(). After this patch, device dismantle uses one synchronize_net() and one rcu_barrier() call only, so we have a ~30% speedup and a smaller RTNL latency. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Patrick McHardy <kaber@trash.net>, CC: Ben Greear <greearb@candelatech.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: remove synchronize_net() from netdev_set_master()Eric Dumazet2-3/+2
In the old days, we used to access dev->master in __netif_receive_skb() in a rcu_read_lock section. So one synchronize_net() call was needed in netdev_set_master() to make sure another cpu could not use old master while/after we release it. We now use netdev_rx_handler infrastructure and added one synchronize_net() call in bond_release()/bond_release_all() Remove the obsolete synchronize_net() from netdev_set_master() and add one in bridge del_nbp() after its netdev_rx_handler_unregister() call. This makes enslave -d a bit faster. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> CC: Jiri Pirko <jpirko@redhat.com> CC: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23rtnetlink: ignore NETDEV_RELEASE and NETDEV_JOIN eventAmerigo Wang1-0/+2
These two events are not expected to be caught by userspace. Signed-off-by: WANG Cong <amwang@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-23net: rename NETDEV_BONDING_DESLAVE to NETDEV_RELEASEAmerigo Wang3-5/+5
s/NETDEV_BONDING_DESLAVE/NETDEV_RELEASE/ as Andy suggested. Signed-off-by: WANG Cong <amwang@redhat.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: Neil Horman <nhorman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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