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2007-10-10[MAC80211]: Add get_unaligned to ieee80211_get_radiotap_lenAndy Green1-1/+2
ieee80211_get_radiotap_len() tries to dereference radiotap length without taking care that it is completely unaligned and get_unaligned() is required. Signed-off-by: Andy Green <andy@warmcat.com> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: use more GFP_KERNEL instead of GFP_ATOMICMichael Wu1-5/+5
This patch replaces atomic allocations with regular ones where possible. Merged with "revert some GFP_ATOMIC -> GFP_KERNEL changes" from Michael Wu: > Some of the allocations made with GFP_ATOMIC really were necessary. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: implement ERP info change notificationsDaniel Drake5-10/+51
zd1211rw and bcm43xx are interested in being notified when ERP IE conditions change, so that they can reprogram a register which affects how control frames are transmitted. This patch adds an interface similar to the one that can be found in softmac. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: improved short preamble handlingDaniel Drake8-30/+88
Similarly to CTS protection, whether short preambles are used for 802.11b transmissions should be a per-subif setting, not device global. For STAs, this patch makes short preamble handling automatic based on the ERP IE. For APs, hostapd still uses the prism ioctls, but the write ioctl has been restricted to AP-only subifs. ieee80211_txrx_data.short_preamble (an unused field) was removed. Unfortunately, some API changes were required for the following functions: - ieee80211_generic_frame_duration - ieee80211_rts_duration - ieee80211_ctstoself_duration - ieee80211_rts_get - ieee80211_ctstoself_get Affected drivers were updated accordingly. Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: Add LONG_RETRY flag to ieee80211_tx_controlIvo van Doorn2-1/+8
mac80211 informs the driver what the short and long retry values are through set_retry_limit(), but when packets are being transmitted it did not inform the driver which of the 2 retry limits should actually be used. Instead it sends the actual value, but for drivers that can only set the retry limit and the register and in the descriptor need to indicate which of the limits should be used this is not really useful. This patch will add a IEEE80211_TXCTL_LONG_RETRY_LIMIT flag to the ieee80211_tx_control structure. By default the short retry limit should be used but if the flag is set the long retry should be used. This does not prevent the driver to ignore the request for "no retry" packets, but at least those will be send out with the short retry limit. But there is no perfect cure for this problem.. :( Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: STA reassociation improvementsDaniel Drake2-2/+17
My cheapy D-Link AP behaves strangely w.r.t reassociations. The following sequence of commands causes me to lose association and to be unable to regain it: ifconfig eth8 down ifconfig eth8 up iwconfig eth8 essid <x> This is because mac80211 tries to reassociate, rather than just associate. My AP replies with an association response (not a reassociation response...) denying the association with code 12: "Association denied due to reason outside the scope of this standard" mac80211 tries this reassociation another 4 times or so before finally giving up. I see 2 problems here: 1. bringing the interface down and up again should be resetting interface state i.e. after the interface is brought down, it should have no memory of if or where it was previously associated 2. after the first reassociation fails, mac80211 should fall back to standard association for the next attempt Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: improve locking of sta_info related structuresMichael Wu8-136/+109
The sta_info code has some awkward locking which prevents some driver callbacks from being allowed to sleep. This patch makes the locking more focused so code that calls driver callbacks are allowed to sleep. It also converts sta_lock to a rwlock. Signed-off-by: Michael Wu <flamingice@sourmilk.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: introduce util.cJohannes Berg4-447/+472
Introduce a new file util.c and move a whole bunch of functions into it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: reorder interface related functionsJohannes Berg1-606/+599
This patch groups a whole bunch of functions together to make ieee80211.c more maintainable. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: move some rate control functions out of ieee80211.cJohannes Berg4-43/+48
I think these can go with rate control just as well and it makes ieee80211.c more readable. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: split out some key functions from ieee80211.cJohannes Berg4-62/+78
into a new file key.c which doesn't have much code right now but it makes ieee80211.c easier to read. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: remove some unnecessary includesJohannes Berg1-4/+0
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: split TX path into own fileJohannes Berg4-1849/+1884
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: rx cleanups (2)Johannes Berg1-14/+28
Some more outdenting to make the code more readable. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: fix bug for per-sta statsJohannes Berg1-6/+7
pre_rx handlers can't really touch sta since for IBSS it might not be assigned yet, it can create sta info structs on-the-fly. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: split up __ieee80211_rxJohannes Berg1-74/+83
The really indented part that does the huge switch on the interface type is a nuisance. Put it into an own function 'prepare_for_handlers'. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: split ieee80211_rx_h_check handlerJohannes Berg1-1/+11
The ieee80211_rx_h_check handler really does two things, it's a lot easier to understand if it's split into ieee80211_rx_h_check and ieee80211_rx_h_load_key, and it may be possible in the future to optimise the key loading to not do it for each interface. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: rx cleanups (1)Johannes Berg1-97/+101
Make some really indented code more readable by outdenting. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: move QoS rx handlers into rx.cJohannes Berg4-71/+60
This patch moves the QoS handlers into rx.c making it possible to compile wme.c only when NET_SCHED is defined. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-10[MAC80211]: split RX handlers into own fileJohannes Berg5-1365/+1400
Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Jiri Benc <jbenc@suse.cz> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2007-10-09Linux 2.6.23v2.6.23Linus Torvalds1-1/+1
2007-10-09Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds6-11/+12
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Au1000: set the PCI controller IO base [MIPS] Alchemy: Fix USB initialization. [MIPS] IP32: Fix fatal typo in address computation.
2007-10-09NLM: Fix a memory leak in nlmsvc_testlockTrond Myklebust1-1/+3
The recent fix for a circular lock dependency unfortunately introduced a potential memory leak in the event where the call to nlmsvc_lookup_host fails for some reason. Thanks to Roel Kluin for spotting this. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-09sata_mv: correct S/G table limitsJeff Garzik1-3/+6
The recent mv_fill_sg() rewrite, to fix a data corruption problem related to IOMMU virtual merging, forgot to account for the potentially-increased size of the scatter/gather table after its run. Additionally, the DMA boundary is reduced from 0xffffffff to 0xffff to more closely match the needs of mv_fill_sg(). Signed-off-by: Jeff Garzik <jgarzik@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-09[MIPS] Au1000: set the PCI controller IO baseFlorian Fainelli1-0/+1
The PCI controller IO base was not set in the au1000 pci code. Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-09[MIPS] Alchemy: Fix USB initialization.Florian Fainelli4-10/+10
This patch fixes a wrong ifdef in the board setup code, leading to the GPIO pin not being pulled high, and thus the USB switch not being powered at all. This finishes the rename of CONFIG_USB_OHCI to CONFIG_USB_OHCI_HCD, which started in 2005 (before 2.6.12-rc2), then probably because things were working anyway for most people got forgotten. [Ralf: Paolo's original patch didn't fix the module case, Florian's patch only fixed MTX1 etc. so this is a combined patch plus some cleanups.] Cc: Giuseppe Patanè <giuseppe.patane@tvblob.com> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-09[MIPS] IP32: Fix fatal typo in address computation.Giuseppe Sacco1-1/+1
Signed-off-by: Giuseppe Sacco <eppesuig@debian.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2007-10-08Correct Makefile rule for generating custom keymapMaarten Bressers1-1/+1
When building a custom keymap, after setting GENERATE_KEYMAP := 1 in drivers/char/Makefile, the kernel build fails like this: CC drivers/char/vt.o make[2]: *** No rule to make target `drivers/char/%.map', needed by `drivers/char/defkeymap.c'. Stop. make[1]: *** [drivers/char] Error 2 make: *** [drivers] Error 2 This was caused by commit af8b128719f5248e542036ea994610a29d0642a6, which deleted a necessary colon from the Makefile rule that generates the keymap, since that rule contains both a target and a target-pattern. The following patch puts the colon back: Signed-off-by: Maarten Bressers <mbres@gentoo.org> Cc: Yoichi Yuasa <yoichi_yuasa@tripeaks.co.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08ISDN: Fix data access out of array boundsKarsten Keil1-2/+3
Fix against access random data bytes outside the dev->chanmap array. Thanks to Oliver Neukum for pointing me to this issue. Signed-off-by: Karsten Keil <kkeil@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08Merge branch 'master' of ↵Linus Torvalds6-13/+22
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 * 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [IPv6]: Fix ICMPv6 redirect handling with target multicast address [PKT_SCHED] cls_u32: error code isn't been propogated properly [ROSE]: Fix rose.ko oops on unload [TCP]: Fix fastpath_cnt_hint when GSO skb is partially ACKed
2007-10-08AIO: fix cleanup in io_submit_one(...)Yan Zheng1-1/+1
When IOCB_FLAG_RESFD flag is set and iocb->aio_resfd is incorrect, statement 'goto out_put_req' is executed. At label 'out_put_req', aio_put_req(..) is called, which requires 'req->ki_filp' set. Signed-off-by: Yan Zheng<yanzheng@21cn.com> Cc: Zach Brown <zach.brown@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08fix page release issue in filemap_faultYan Zheng1-0/+1
find_lock_page increases page's usage count, we should decrease it before return VM_FAULT_SIGBUS Signed-off-by: Yan Zheng<yanzheng@21cn.com> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08fix VM_CAN_NONLINEAR check in sys_remap_file_pagesYan Zheng1-1/+1
The test for VM_CAN_NONLINEAR always fails Signed-off-by: Yan Zheng<yanzheng@21cn.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08mm: set_page_dirty_balance() vs ->page_mkwrite()Peter Zijlstra3-5/+10
All the current page_mkwrite() implementations also set the page dirty. Which results in the set_page_dirty_balance() call to _not_ call balance, because the page is already found dirty. This allows us to dirty a _lot_ of pages without ever hitting balance_dirty_pages(). Not good (tm). Force a balance call if ->page_mkwrite() was successful. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-08[IPv6]: Fix ICMPv6 redirect handling with target multicast addressBrian Haley1-4/+5
When the ICMPv6 Target address is multicast, Linux processes the redirect instead of dropping it. The problem is in this code in ndisc_redirect_rcv(): if (ipv6_addr_equal(dest, target)) { on_link = 1; } else if (!(ipv6_addr_type(target) & IPV6_ADDR_LINKLOCAL)) { ND_PRINTK2(KERN_WARNING "ICMPv6 Redirect: target address is not link-local.\n"); return; } This second check will succeed if the Target address is, for example, FF02::1 because it has link-local scope. Instead, it should be checking if it's a unicast link-local address, as stated in RFC 2461/4861 Section 8.1: - The ICMP Target Address is either a link-local address (when redirected to a router) or the same as the ICMP Destination Address (when redirected to the on-link destination). I know this doesn't explicitly say unicast link-local address, but it's implied. This bug is preventing Linux kernels from achieving IPv6 Logo Phase II certification because of a recent error that was found in the TAHI test suite - Neighbor Disovery suite test 206 (v6LC.2.3.6_G) had the multicast address in the Destination field instead of Target field, so we were passing the test. This won't be the case anymore. The patch below fixes this problem, and also fixes ndisc_send_redirect() to not send an invalid redirect with a multicast address in the Target field. I re-ran the TAHI Neighbor Discovery section to make sure Linux passes all 245 tests now. Signed-off-by: Brian Haley <brian.haley@hp.com> Acked-by: David L Stevens <dlstevens@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-07[PKT_SCHED] cls_u32: error code isn't been propogated properlyStephen Hemminger1-1/+1
Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-07[ROSE]: Fix rose.ko oops on unloadAlexey Dobriyan3-8/+13
Commit a3d384029aa304f8f3f5355d35f0ae274454f7cd aka "[AX.25]: Fix unchecked rose_add_loopback_neigh uses" transformed rose_loopback_neigh var into statically allocated one. However, on unload it will be kfree's which can't work. Steps to reproduce: modprobe rose rmmod rose BUG: unable to handle kernel NULL pointer dereference at virtual address 00000008 printing eip: c014c664 *pde = 00000000 Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC Modules linked in: rose ax25 fan ufs loop usbhid rtc snd_intel8x0 snd_ac97_codec ehci_hcd ac97_bus uhci_hcd thermal usbcore button processor evdev sr_mod cdrom CPU: 0 EIP: 0060:[<c014c664>] Not tainted VLI EFLAGS: 00210086 (2.6.23-rc9 #3) EIP is at kfree+0x48/0xa1 eax: 00000556 ebx: c1734aa0 ecx: f6a5e000 edx: f7082000 esi: 00000000 edi: f9a55d20 ebp: 00200287 esp: f6a5ef28 ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068 Process rmmod (pid: 1823, ti=f6a5e000 task=f7082000 task.ti=f6a5e000) Stack: f9a55d20 f9a5200c 00000000 00000000 00000000 f6a5e000 f9a5200c f9a55a00 00000000 bf818cf0 f9a51f3f f9a55a00 00000000 c0132c60 65736f72 00000000 f69f9630 f69f9528 c014244a f6a4e900 00200246 f7082000 c01025e6 00000000 Call Trace: [<f9a5200c>] rose_rt_free+0x1d/0x49 [rose] [<f9a5200c>] rose_rt_free+0x1d/0x49 [rose] [<f9a51f3f>] rose_exit+0x4c/0xd5 [rose] [<c0132c60>] sys_delete_module+0x15e/0x186 [<c014244a>] remove_vma+0x40/0x45 [<c01025e6>] sysenter_past_esp+0x8f/0x99 [<c012bacf>] trace_hardirqs_on+0x118/0x13b [<c01025b6>] sysenter_past_esp+0x5f/0x99 ======================= Code: 05 03 1d 80 db 5b c0 8b 03 25 00 40 02 00 3d 00 40 02 00 75 03 8b 5b 0c 8b 73 10 8b 44 24 18 89 44 24 04 9c 5d fa e8 77 df fd ff <8b> 56 08 89 f8 e8 84 f4 fd ff e8 bd 32 06 00 3b 5c 86 60 75 0f EIP: [<c014c664>] kfree+0x48/0xa1 SS:ESP 0068:f6a5ef28 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-07[TCP]: Fix fastpath_cnt_hint when GSO skb is partially ACKedIlpo Järvinen1-0/+3
When only GSO skb was partially ACKed, no hints are reset, therefore fastpath_cnt_hint must be tweaked too or else it can corrupt fackets_out. The corruption to occur, one must have non-trivial ACK/SACK sequence, so this bug is not very often that harmful. There's a fackets_out state reset in TCP because fackets_out is known to be inaccurate and that fixes the issue eventually anyway. In case there was also at least one skb that got fully ACKed, the fastpath_skb_hint is set to NULL which causes a recount for fastpath_cnt_hint (the old value won't be accessed anymore), thus it can safely be decremented without additional checking. Reported by Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-07Driver core: fix SYSF_DEPRECATED breakage for nested classdevsDmitry Torokhov1-3/+7
We should only reparent to a class former class devices that form the base of class hierarchy. Nested devices should still grow from their real parents. Signed-off-by: Dmitry Torokhov <dtor@mail.ru> Tested-by: Andrey Borzenkov <arvidjaar@mail.ru> Tested-by: Anssi Hannula <anssi.hannula@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07Merge branch 'for-linus' of ↵Linus Torvalds1-1/+2
git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: firewire: point to migration document
2007-10-07Add manufacturer and card id of teltonica pcmcia modemsAttila Kinali1-0/+1
Add the manufacturer and card id of teltonica pcmcia modems to serial_cs.c Signed-off-by: Attila Kinali <attila@kinali.ch> Acked-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07sysrq docs: document sequence that actually worksPavel Machek1-1/+1
Document sequence of keypresses that actually works. Yes, this changed year-or-so ago. Signed-off-by: Pavel Machek <pavel@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07fix bogus reporting of signals by auditAl Viro1-11/+11
Async signals should not be reported as sent by current in audit log. As it is, we call audit_signal_info() too early in check_kill_permission(). Note that check_kill_permission() has that test already - it needs to know if it should apply current-based permission checks. So the solution is to move the call of audit_signal_info() between those. Bogosity in question is easily reproduced - add a rule watching for e.g. kill(2) from specific process (so that audit_signal_info() would not short-circuit to nothing), say load_policy, watch the bogus OBJ_PID entry in audit logs claiming that write(2) on selinuxfs file issued by load_policy(8) had somehow managed to send a signal to syslogd... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Steve Grubb <sgrubb@redhat.com> Acked-by: Eric Paris <eparis@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07Move kasprintf.o to obj-yAlexey Dobriyan1-2/+2
Modulat lguest started giving linking errors MODPOST 1 modules ERROR: "kasprintf" [drivers/lguest/lg.ko] undefined! Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Cc: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07lockstat: documentationPeter Zijlstra2-0/+122
Provide some documentation for CONFIG_LOCK_STAT. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: "Randy.Dunlap" <rdunlap@xenotime.net> Cc: Rob Landley <rob@landley.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07Longhaul: add auto enabled "revid_errata" optionRafal Bilski1-3/+57
VIA C3 Ezra-T has RevisionID equal to 1, but it needs RevisionKey to be 0 or CPU will ignore new frequency and will continue to work at old frequency. New "revid_errata" option will force RevisionKey to be set to 0, whatever RevisionID is. Additionaly "Longhaul" will not silently ignore unsuccessful transition. It will try to check if "revid_errata" or "disable_acpi_c3" options need to be enabled for this processor/system. Same for Longhaul ver. 2 support. It will be disabled if none of above options will work. Best case scenario (with patch apllied and v2 enabled): longhaul: VIA C3 'Ezra' [C5C] CPU detected. Longhaul v2 supported. longhaul: Using northbridge support. longhaul: VRM 8.5 longhaul: Max VID=1.350 Min VID=1.050, 13 possible voltage scales longhaul: f: 300000 kHz, index: 0, vid: 1050 mV [...] longhaul: Voltage scaling enabled. Worst case scenario: longhaul: VIA C3 'Ezra-T' [C5M] CPU detected. Powersaver supported. longhaul: Using northbridge support. longhaul: Using ACPI support. longhaul: VRM 8.5 longhaul: Claims to support voltage scaling but min & max are both 1.250. Voltage scaling disabled longhaul: Failed to set requested frequency! longhaul: Enabling "Ignore Revision ID" option. longhaul: Failed to set requested frequency! longhaul: Disabling ACPI C3 support. longhaul: Disabling "Ignore Revision ID" option. longhaul: Failed to set requested frequency! longhaul: Enabling "Ignore Revision ID" option. [akpm@linux-foundation.org: coding-style cleanups] Signed-off-by: Rafal Bilski <rafalbilski@interia.pl> Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07Fix timer_stats printout of events/secAnton Blanchard1-2/+3
When using /proc/timer_stats on ppc64 I noticed the events/sec field wasnt accurate. Sometimes the integer part was incorrect due to rounding (we werent taking the fractional seconds into consideration). The fraction part is also wrong, we need to pad the printf statement and take the bottom three digits of 1000 times the value. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07Don't do load-average calculations at even 5-second intervalsLinus Torvalds1-1/+1
It turns out that there are a few other five-second timers in the kernel, and if the timers get in sync, the load-average can get artificially inflated by events that just happen to coincide. So just offset the load average calculation it by a timer tick. Noticed by Anders Boström, for whom the coincidence started triggering on one of his machines with the JBD jiffies rounding code (JBD is one of the subsystems that also end up using a 5-second timer by default). Tested-by: Anders Boström <anders@bostrom.dyndns.org> Cc: Chuck Ebbert <cebbert@redhat.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07VT_WAITACTIVE: Avoid returning EINTR when not necessaryLinus Torvalds1-2/+2
We should generally prefer to return ERESTARTNOHAND rather than EINTR, so that processes with unhandled signals that get ignored don't return EINTR. This can help with X startup issues: Fatal server error: xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call although the real fix is having the X server always retry EINTR regardless (since EINTR does happen for signals that have handlers installed). Keithp has a patch for that. Regardless, ERESTARTNOHAND is the correct thing to use. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-07firewire: point to migration documentStefan Richter1-1/+2
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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