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* Pull percpu-dtc into release branchTony Luck2007-04-30
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| * [IA64] relax per-cpu TLB requirement to DTCChen, Kenneth W2007-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of pinning per-cpu TLB into a DTR, use DTC. This will free up one TLB entry for application, or even kernel if access pattern to per-cpu data area has high temporal locality. Since per-cpu is mapped at the top of region 7 address, we just need to add special case in alt_dtlb_miss. The physical address of per-cpu data is already conveniently stored in IA64_KR(PER_CPU_DATA). Latency for alt_dtlb_miss is not affected as we can hide all the latency. It was measured that alt_dtlb_miss handler has 23 cycles latency before and after the patch. The performance effect is massive for applications that put lots of tlb pressure on CPU. Workload environment like database online transaction processing or application uses tera-byte of memory would benefit the most. Measurement with industry standard database benchmark shown an upward of 1.6% gain. While smaller workloads like cpu, java also showing small improvement. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] remove per-cpu ia64_phys_stacked_size_p8Chen, Kenneth W2007-02-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's not efficient to use a per-cpu variable just to store how many physical stack register a cpu has. Ever since the incarnation of ia64 up till upcoming Montecito processor, that variable has "glued" to 96. Having a variable in memory means that the kernel is burning an extra cacheline access on every syscall and kernel exit path. Such "static" value is better served with the instruction patching utility exists today. Convert ia64_phys_stacked_size_p8 into dynamic insn patching. This also has a pleasant side effect of eliminating access to per-cpu area while psr.ic=0 in the kernel exit path. (fixable for per-cpu DTC work, but why bother?) There are some concerns with the default value that the instruc- tion encoded in the kernel image. It shouldn't be concerned. The reasons are: (1) cpu_init() is called at CPU initialization. In there, we find out physical stack register size from PAL and patch two instructions in kernel exit code. The code in question can not be executed before the patching is done. (2) current implementation stores zero in ia64_phys_stacked_size_p8, and that's what the current kernel exit path loads the value with. With the new code, it is equivalent that we store reg size 96 in ia64_phys_stacked_size_p8, thus creating a better safety net. Given (1) above can never fail, having (2) is just a bonus. All in all, this patch allow one less memory reference in the kernel exit path, thus reducing syscall and interrupt return latency; and avoid polluting potential useful data in the CPU cache. Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | Pull error-inject into release branchTony Luck2007-04-30
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| * | [IA64] Fix example error injection programTony Luck2007-02-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | Progam accessed using /sys/devices/system/node/node0/cpu%d/err_inject/ This path only exists for CONFIG_NUMA=y systems. Better to use /sys/devices/system/cpu/cpu%d/err_inject/ which is available on all systems. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Itanium MC Error Injection Tool: pal_mc_error_inject() interfaceFenghua Yu2007-01-29
| | | | | | | | | | | | | | | | | | | | | | | | This patch implements pal_mc_error_inject() interface in kernel. Both physical mode and virtual mode are supported. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Itanium MC Error Injection Tool: Makefile changesFenghua Yu2007-01-29
| | | | | | | | | | | | | | | | | | | | | This patch has Makefile changes. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Itanium MC Error Injection Tool: Driver sysfs interfaceFenghua Yu2007-01-29
| | | | | | | | | | | | | | | | | | | | | | | | This kernel driver patch provides sysfs interface for user application to call pal_mc_error_inject() procedure. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Itanium MC Error Injection Tool: Doc and sample applicationFenghua Yu2007-01-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch contains a documention and sample application. Since the sample application has ~1000 lines of code, it might not be suitable in a kernel documention in kenrel tree. If you think this is not good place to hold the sample application, please let me know and I'm open to other choices e.g. sourceforge etc. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Itanium MC Error Injection Tool: Kernel configurationFenghua Yu2007-01-29
| | | | | | | | | | | | | | | | | | | | | | | | This patch has kenrel configuration changes for the MC Error Injection Tool. Signed-off-by: Fenghua Yu <fenghua.yu@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | Merge branch 'for-linus' of ↵Linus Torvalds2007-04-30
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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: (56 commits) ieee1394: remove garbage from Kconfig ieee1394: more help in Kconfig ieee1394: ohci1394: Fix mistake in printk message. ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl register ieee1394: ohci1394: fix cosmetic problem in error logging ieee1394: eth1394: send async streams at S100 on 1394b buses ieee1394: eth1394: fix error path in module_init ieee1394: eth1394: correct return codes in hard_start_xmit ieee1394: eth1394: hard_start_xmit is called in atomic context ieee1394: eth1394: some conditions are unlikely ieee1394: eth1394: clean up fragment_overlap ieee1394: eth1394: don't use alloc_etherdev ieee1394: eth1394: omit useless set_mac_address callback ieee1394: eth1394: CONFIG_INET is always defined ieee1394: eth1394: allow MTU bigger than 1500 ieee1394: unexport highlevel_host_reset ieee1394: eth1394: contain host reset ieee1394: eth1394: shorter error messages ieee1394: eth1394: correct a memset argument ieee1394: eth1394: refactor .probe and .update ...
| * | | ieee1394: remove garbage from KconfigStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: more help in KconfigStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - s/Device Drivers/Controllers/ - clarify who needs pcilynx - don't recommend Y for raw1394; M is typically used Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: ohci1394: Fix mistake in printk message.Simon Arlott2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the "attempting to setting" message in ohci1394. Signed-off-by: Simon Arlott <simon@fire.lp0.eu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl ↵Bernhard Kauer2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | register Remove the unneeded code that clears, sets and again clears the rcvPhyPkt bit in the ohci1394 LinkControl register in ohci_initialize(). Signed-off-by: Bernhard Kauer <kauer@os.inf.tu-dresden.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: ohci1394: fix cosmetic problem in error loggingStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | If posted write failed, an "Unhandled interrupt(s) 0x00000100" message was logged by mistake. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: send async streams at S100 on 1394b busesStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | eth1394 did not work on buses consisting of S100B...S400B hardware because it attempted to send GASP packets at S800. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: fix error path in module_initAkinobu Mita2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes some error handlings in eth1394: - check return value of kmem_cache_create() - cleanup resources if hpsb_register_protocol() fails Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (whitespace)
| * | | ieee1394: eth1394: correct return codes in hard_start_xmitStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch actually doesn't change anything because there was always 0 == NETDEV_TX_OK returned before. TODO: Return NETDEV_TX_BUSY in error case and test in different error conditions. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: hard_start_xmit is called in atomic contextStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: some conditions are unlikelyStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: clean up fragment_overlapStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | offset > fi->offset + fi->len - 1 == !(offset < fi->offset + fi->len) offset + len - 1 < fi->offset == !(offset + len > fi->offset) !(A || B) == (!A && !B) Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: don't use alloc_etherdevStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: omit useless set_mac_address callbackStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | We can't reconfigure the MAC address, hence we don't need the callback. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: CONFIG_INET is always definedStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | because CONFIG_IEEE1394_ETH1394 depends on it. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: allow MTU bigger than 1500Stefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | RFC 2734 says: "IP-capable nodes may operate with an MTU size larger than the default [1500 octets], but the means by which a larger MTU is configured are beyond the scope of this document." Allow users to set an MTU bigger than 1500. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: unexport highlevel_host_resetAdrian Bunk2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | highlevel_host_reset no longer has any modular users. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: contain host resetStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call only eth1394's own host reset handler from .tx_timeout, not the reset hooks of all other IEEE 1394 drivers. A minor drawback of this patch is that ether1394_host_reset by timeout is not serialized against ether1394_host_reset by bus reset. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: shorter error messagesStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: correct a memset argumentStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | The old argument calculated the correct value in a wrong way. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: refactor .probe and .updateStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Move common code into an extra function. This implicitly adds a missing node_info->fifo = CSR1212_INVALID_ADDR_SPACE; to .update. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: .probe and .update may sleepStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: coding styleStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Adjust white space and line wraps. Remove unnecessary parentheses and braces, unused macros, and some of the more redundant comments. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: Move common recv_init code to helper functionJean Delvare2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There is some common code between ether1394_open and ether1394_add_host which can be moved to a separate helper function for a slightly smaller eth1394 driver (-160 bytes on i386.) Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: don't autoload by hotplug when ohci1394 startsStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Until now, ieee1394 put an IP-over-1394 capability entry into each new host's config ROM. As soon as the controller was initialized --- i.e. right after modprobe ohci1394 --- this entry triggered a hotplug event which typically caused auto-loading of eth1394. This irritated or annoyed many users and distributors. Of course they could blacklist eth1394, but then ieee1394 wrongly advertized IP-over- 1394 capability to the FireWire bus. Therefore - remove the offending kernel config option IEEE1394_CONFIG_ROM_IP1394, - let eth1394 add the ROM entry by itself, i.e. only after eth1394 was loaded. This fixes http://bugzilla.kernel.org/show_bug.cgi?id=7793 . To emulate the behaviour of older kernels, simply add the following to to /etc/modprobe.conf: install ohci1394 /sbin/modprobe eth1394; \ /sbin/modprobe --ignore-install ohci1394 Note, autoloading of eth1394 when an _external_ IP-over-1394 capable device is discovered is _not_ affected by this patch. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: reduce excessive function inliningStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Shrinks eth1394.ko by about 5%. Many of these functions have only one caller and are therefore auto- inlined anyway. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: clean up host removalStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | ether1394_add_host() guarantees that hi->dev != NULL if hi != NULL. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: eth1394: unregister address space in failure caseStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Warn if hpsb_allocate_and_register_addrspace() failed. Unregister the address space if something else failed. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: send async streams at S100Stefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The comment says it all. This affects only asynchronous streams sent via raw1394; the eth1394 driver has own code and needs an own fix. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: SPIN_LOCK_UNLOCKED cleanupMilind Arun Choudhary2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | SPIN_LOCK_UNLOCKED cleanup,use DEFINE_SPINLOCK instead Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: nodemgr: unify some error messagesStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | Shrinks object file size a little bit. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: nodemgr: less noise in dmesgStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Everytime when eth1394 or a libraw1394 client updates the configuration ROM, a certain sysfs attribute cannot be added since it already exists. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: unroll a weird macroStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a coding style touch-up for ieee1394's handle_incoming_packet(). A preprocessor macro contained hardwired variable names and, even worse, the 'break' keyword. This macro is now unrolled and removed. Also, all 'break's which had the effect of a return are replaced by return. And a FIXME comment is brought up to date. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: iso.c needs sched.hAndrew Morton2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | alpha: drivers/ieee1394/iso.c: In function 'hpsb_iso_xmit_sync': drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct' drivers/ieee1394/iso.c:440: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/ieee1394/iso.c:440: error: (Each undeclared identifier is reported only once drivers/ieee1394/iso.c:440: error: for each function it appears in.) drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'signal_pending' drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct' drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'schedule' drivers/ieee1394/iso.c: In function 'hpsb_iso_wake': drivers/ieee1394/iso.c:562: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
| * | | ieee1394: some more includesStefan Richter2007-04-29
| | | | | | | | | | | | | | | | Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: ieee1394_transactions needs sched.hTorsten Kaiser2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | drivers/ieee1394/ieee1394_transactions.c fails for me if CONFIG_SMP=n gcc complains: CC drivers/ieee1394/ieee1394_transactions.o drivers/ieee1394/ieee1394_transactions.c: In function 'hpsb_get_tlabel': drivers/ieee1394/ieee1394_transactions.c:183: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function) drivers/ieee1394/ieee1394_transactions.c:183: error: (Each undeclared identifier is reported only once Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added comment)
| * | | ieee1394: ieee1394_core printk formatRandy Dunlap2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix printk format string: drivers/ieee1394/ieee1394_core.c:702: warning: format '%d' expects type 'int', but argument 2 has type 'size_t' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: remove usage of skb_queue as packet queueStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This considerably reduces the memory requirements for a packet and eliminates ieee1394's dependency on CONFIG_NET. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: csr1212: log if devices have CRC errors in their ROMStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This will point out firmware bugs. I tested with 11 SBP-2 devices and one OS X PC and got these errors from two old CD-RWs only. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
| * | | ieee1394: csr1212: more sensible names for jump targetsStefan Richter2007-04-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Code beneath two labels called "fail" is actually also reached in case of success. Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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