- 27 12月, 2006 13 次提交
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由 Jesse Brandeburg 提交于
Allow the user to vary the size that copybreak works. Currently cb is enabled for packets < 256 bytes, but various tests indicate that this should be configurable for specific use cases. In addition, this parameter allows us to force never/always during testing to get full and predictable coverage of both code paths. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Bruce Allan 提交于
Assign the PBA to be large enough to contain at least 2 jumbo frames on all adapters. This dramatically increases performance on several adapters and fixes TX performance degradation issues where the PBA was misallocated in the old algorithm. Signed-off-by: NBruce Allan <bruce.w.allan@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jesse Brandeburg 提交于
the driver has (ancient) code for messing with TIPG from the 82542 days. Unfortunately this code was running on our current adapters and setting TIPG for fiber to be +1 over the copper value. This caused 1.45Mpps to be sent instead of 1.487Mpps. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jeff Kirsher 提交于
For older adapters we know that they are of the PCI bus type, so we can just set this. Signed-off-by: NJeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Bruce Allan 提交于
This bugfix makes sure that the driver data reflects the full new situation before the adapter is reinitialized. Signed-off-by: NBruce Allan <bruce.w.allan@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jeff Garzik 提交于
In rare occasions, ESB2 systems would end up started without the RX unit being turned on. Add a check that runs post-init to work around this issue. Originally from Jesse Brandeburg <jesse.brandeburg@intel.com>, rewritten to use feature flags by me. Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jesse Brandeburg 提交于
CONFIG_DEBUG_SLAB changes alignments of the data structures the slab allocators return. These break certain workarounds for TSO on the 82544. Since DEBUG_SLAB is relatively rare and not used for performance sensitive cases, the simplest fix is to disable TSO in this special situation. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jesse Brandeburg 提交于
If the user has forced gigabit speed, phy power management must be disabled; otherwise the NIC would try to negotiate to a linkspeed of 10/100 mbit on shutdown, which would lead to a total loss of link. This loss of link breaks Wake-on-Lan and IPMI. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jeff Garzik 提交于
Several bugs existed in how we handle manageability issues all over the driver. This patch consolidates all the managability release and init code in two single functions and call them from appropriate locations. This fixes several BMC packet redirect issues and powerup/down hiccups. Originally from Jesse Brandeburg <jesse.brandeburg@intel.com>, rewritten to use feature flags by me. Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jeff Garzik 提交于
The 82543 chip does not count tx_carrier_errors properly in FD mode; report zeros instead of garbage. Originally from Jesse Brandeburg <jesse.brandeburg@intel.com>, rewritten to use feature flags by me. Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jeff Garzik 提交于
Makes future changes a bit more readable. Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jesse Brandeburg 提交于
The dynamic interrupt rate control patches omitted proper counting for jumbo's and TSO resulting in suboptimal interrupt mitigation strategies. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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由 Jesse Brandeburg 提交于
The lower 2 bits of a user-supplied itr setting (via ethtool) need to be masked off: These lower two bits are used as control bits. Signed-off-by: NJesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com> Signed-off-by: NArjan van de Ven <arjan@linux.intel.com> Signed-off-by: NJeff Garzik <jeff@garzik.org>
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- 24 12月, 2006 6 次提交
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由 Linus Torvalds 提交于
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由 Linus Torvalds 提交于
This also adds he required page "writeback" flag handling, that cifs hasn't been doing and that the page dirty flag changes made obvious. Acked-by: NSteve French <smfltc@us.ibm.com> Acked-by: NDave Kleikamp <shaggy@linux.vnet.ibm.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 OGAWA Hirofumi 提交于
We use the fixmap for accessing pci config space in pci_mmcfg_read/write(). The problem is in pci_exp_set_dev_base(). It is caching a last accessed address to avoid calling set_fixmap_nocache() whenever pci_mmcfg_read/write() is used. static inline void pci_exp_set_dev_base(int bus, int devfn) { u32 dev_base = base | (bus << 20) | (devfn << 12); if (dev_base != mmcfg_last_accessed_device) { mmcfg_last_accessed_device = dev_base; set_fixmap_nocache(FIX_PCIE_MCFG, dev_base); } } cpu0 cpu1 --------------------------------------------------------------------------- pci_mmcfg_read("device-A") pci_exp_set_dev_base() set_fixmap_nocache() pci_mmcfg_read("device-B") pci_exp_set_dev_base() set_fixmap_nocache() pci_mmcfg_read("device-B") pci_exp_set_dev_base() /* doesn't flush tlb */ But if cpus accessed the above order, the second pci_mmcfg_read() on cpu0 doesn't flush the TLB, because "mmcfg_last_accessed_device" is device-B. So, second pci_mmcfg_read() on cpu0 accesses a device-A via a previous TLB cache. This problem became the cause of several strange behavior. This patches fixes this situation by adds "mmcfg_last_accessed_cpu" check. [ Alternatively, we could make a per-cpu mapping area or something. Not that it's probably worth it, but if we wanted to avoid all locking and instead just disable preemption, that would be the way to go. --Linus ] Signed-off-by: NOGAWA Hirofumi <hogawa@miraclelinux.com> Signed-off-by: NOGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ingo Molnar 提交于
Clark Williams reported that suspend doesnt work on his laptop on 2.6.20-rc1-rt kernels. The bug was introduced by the following cleanup commit: commit 112cecb2 Author: Siddha, Suresh B <suresh.b.siddha@intel.com> Date: Wed Dec 6 20:34:31 2006 -0800 [PATCH] suspend: don't change cpus_allowed for task initiating the suspend because with this change 'error' is not initialized to 0 anymore, if there are no other online CPUs. (i.e. if the system is single-CPU). the fix is the initialize it to 0. The really weird thing is that my version of gcc does not warn about this non-initialized variable situation ... (also fix the kernel printk in the error branch, it was missing a newline) Reported-by: NClark Williams <williams@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
Thanks to Len Brown for testing this fix, since while they have in the past, none of my machines run reiserfs at the moment. Cc: Vladimir V. Saveliev <vs@namesys.com> Acked-by: NLen Brown <lenb@kernel.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
Make cancel_dirty_page() act more like all the other dirty and writeback accounting functions: test for "mapping" being NULL, and do the NR_FILE_DIRY accounting purely based on mapping_cap_account_dirty()). Also, add it to the exports, so that modular filesystems can use it. Acked-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 23 12月, 2006 21 次提交
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6由 Linus Torvalds 提交于
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (68 commits) ACPI: replace kmalloc+memset with kzalloc ACPI: Add support for acpi_load_table/acpi_unload_table_id fbdev: update after backlight argument change ACPI: video: Add dev argument for backlight_device_register ACPI: Implement acpi_video_get_next_level() ACPI: Kconfig - depend on PM rather than selecting it ACPI: fix NULL check in drivers/acpi/osl.c ACPI: make drivers/acpi/ec.c:ec_ecdt static ACPI: prevent processor module from loading on failures ACPI: fix single linked list manipulation ACPI: ibm_acpi: allow clean removal ACPI: fix git automerge failure ACPI: ibm_acpi: respond to workqueue update ACPI: dock: add uevent to indicate change in device status ACPI: ec: Lindent once again ACPI: ec: Change #define to enums there possible. ACPI: ec: Style changes. ACPI: ec: Acquire Global Lock under EC mutex. ACPI: ec: Drop udelay() from poll mode. Loop by reading status field instead. ACPI: ec: Rename gpe_bit to gpe ...
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由 Marcel Holtmann 提交于
The function isdn_ppp_ccp_reset_alloc_state() sets ->timer.function and ->timer.data and later on calls add_timer() with no init_timer() ever done. Noted by Al Viro. Signed-off-by: NMarcel Holtmann <marcel@holtmann.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Linus Torvalds 提交于
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: [UDP]: Fix reversed logic in udp_get_port(). [IPV6]: Dumb typo in generic csum_ipv6_magic() [SCTP]: make 2 functions static [SCTP]: Fix typo adaption -> adaptation as per the latest API draft. [SCTP]: Don't export include/linux/sctp.h to userspace. [TCP]: Fix ambiguity in the `before' relation. [ATM] drivers/atm/fore200e.c: Cleanups. [ATM]: Remove dead ATM_TNETA1570 option. NetLabel: correctly fill in unused CIPSOv4 level and category mappings NetLabel: perform input validation earlier on CIPSOv4 DOI add ops
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由 Jens Axboe 提交于
The logic in cfq_allow_merge() wasn't clear enough - basically allow merging for the same queues only. Do a fast check for 'rq and bio both sync/async' before doing the cfqq hash lookup. This is verified to work with the fixed elv_try_merge() from commit bb4067e3. Signed-off-by: NJens Axboe <jens.axboe@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 David S. Miller 提交于
When this code was converted to use sk_for_each() the logic for the "best hash chain length" code was reversed, breaking everything. The original code was of the form: size = 0; do { if (++size >= best_size_so_far) goto next; } while ((sk = sk->next) != NULL); best_size_so_far = size; best = result; next:; and this got converted into: sk_for_each(sk2, node, head) if (++size < best_size_so_far) { best_size_so_far = size; best = result; } Which does something very very different from the original. Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Al Viro 提交于
... duh Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Adrian Bunk 提交于
This patch makes the following needlessly global functions static: - ipv6.c: sctp_inet6addr_event() - protocol.c: sctp_inetaddr_event() Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NSridhar Samudrala <sri@us.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ivan Skytte Jorgensen 提交于
Signed-off-by: NIvan Skytte Jorgensen <isj-sctp@i1.dk> Signed-off-by: NSridhar Samudrala <sri@us.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Sridhar Samudrala 提交于
This file contains protocol definitions and there are no SCTP apps that use this file. Signed-off-by: NSridhar Samudrala <sri@us.ibm.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Gerrit Renker 提交于
While looking at DCCP sequence numbers, I stumbled over a problem with the following definition of before in tcp.h: static inline int before(__u32 seq1, __u32 seq2) { return (__s32)(seq1-seq2) < 0; } Problem: This definition suffers from an an ambiguity, i.e. always before(a, (a + 2^31) % 2^32)) = 1 before((a + 2^31) % 2^32), a) = 1 In text: when the difference between a and b amounts to 2^31, a is always considered `before' b, the function can not decide. The reason is that implicitly 0 is `before' 1 ... 2^31-1 ... 2^31 Solution: There is a simple fix, by defining before in such a way that 0 is no longer `before' 2^31, i.e. 0 `before' 1 ... 2^31-1 By not using the middle between 0 and 2^32, before can be made unambiguous. This is achieved by testing whether seq2-seq1 > 0 (using signed 32-bit arithmetic). I attach a patch to codify this. Also the `after' relation is basically a redefinition of `before', it is now defined as a macro after before. Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Adrian Bunk 提交于
This patch contains the following transformations from custom functions to standard kernel version: - fore200e_kmalloc() -> kzalloc() - fore200e_kfree() -> kfree() - fore200e_swap() -> cpu_to_be32() Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Adrian Bunk 提交于
This patch removes the unconverted ATM_TNETA1570 option that also lacks any code in the kernel. Signed-off-by: NAdrian Bunk <bunk@stusta.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Paul Moore 提交于
Back when the original NetLabel patches were being changed to use Netlink attributes correctly some code was accidentially dropped which set all of the undefined CIPSOv4 level and category mappings to a sentinel value. The result is the mappings data in the kernel contains bogus mappings which always map to zero. This patch restores the old/correct behavior by initializing the mapping data to the correct sentinel value. Signed-off-by: NPaul Moore <paul.moore@hp.com> Signed-off-by: NJames Morris <jmorris@namei.org>
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由 Paul Moore 提交于
There are a couple of cases where the user input for a CIPSOv4 DOI add operation was not being done soon enough; the result was unexpected behavior which was resulting in oops/panics/lockups on some platforms. This patch moves the existing input validation code earlier in the code path to protect against bogus user input. Signed-off-by: NPaul Moore <paul.moore@hp.com> Signed-off-by: NJames Morris <jmorris@namei.org>
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由 Peter Zijlstra 提交于
- add flush_cache_page() for all those virtual indexed cache architectures. - handle s390. Signed-off-by: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Peter Korsgaard 提交于
The uartlite driver used to always enable the port even if request_port failed causing havoc. This patch fixes it. Signed-off-by: NPeter Korsgaard <jacmet@sunsite.dk> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Eric W. Biederman 提交于
This patch fixes the case when we reparent to a different thread in the same thread group. This modifies the code so that we do not send signals and do not change the signal to send to SIGCHLD unless we have change the thread group of our parents. It also suppresses sending pdeath_sig in this cas as well since the result of geppid doesn't change. Thanks to Oleg for spotting my bug of only fixing this for non-ptraced tasks. Signed-off-by: NEric W. Biederman <ebiederm@xmission.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Albert Cahalan <acahalan@gmail.com> Cc: Andrew Morton <akpm@osdl.org> Cc: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Coywolf Qi Hunt <qiyong@fc-cn.com> Acked-by: NOleg Nesterov <oleg@tv-sign.ru> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Andrew Morton 提交于
compile.h is created super-late in the build. But proc_misc.c want to include it, and it's generally not sane to have a header file in include/linux be created at the end of the build: it's either not present or, worse, wrong for most of the build. So the patch arranges for compile.h to be built at the start of the build process. It also consolidates the compile.h rules with those for version.h and utsname.h, so they all get built together. I hope. My chances of having got this right are about 2%. Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ingo Molnar 提交于
Fernando Lopez-Lezcano reported frequent scheduling latencies and audio xruns starting at the 2.6.18-rt kernel, and those problems persisted all until current -rt kernels. The latencies were serious and unjustified by system load, often in the milliseconds range. After a patient and heroic multi-month effort of Fernando, where he tested dozens of kernels, tried various configs, boot options, test-patches of mine and provided latency traces of those incidents, the following 'smoking gun' trace was captured by him: _------=> CPU# / _-----=> irqs-off | / _----=> need-resched || / _---=> hardirq/softirq ||| / _--=> preempt-depth |||| / ||||| delay cmd pid ||||| time | caller \ / ||||| \ | / IRQ_19-1479 1D..1 0us : __trace_start_sched_wakeup (try_to_wake_up) IRQ_19-1479 1D..1 0us : __trace_start_sched_wakeup <<...>-5856> (37 0) IRQ_19-1479 1D..1 0us : __trace_start_sched_wakeup (c01262ba 0 0) IRQ_19-1479 1D..1 0us : resched_task (try_to_wake_up) IRQ_19-1479 1D..1 0us : __spin_unlock_irqrestore (try_to_wake_up) ... <idle>-0 1...1 11us!: default_idle (cpu_idle) ... <idle>-0 0Dn.1 602us : smp_apic_timer_interrupt (c0103baf 1 0) ... <...>-5856 0D..2 618us : __switch_to (__schedule) <...>-5856 0D..2 618us : __schedule <<idle>-0> (20 162) <...>-5856 0D..2 619us : __spin_unlock_irq (__schedule) <...>-5856 0...1 619us : trace_stop_sched_switched (__schedule) <...>-5856 0D..1 619us : trace_stop_sched_switched <<...>-5856> (37 0) what is visible in this trace is that CPU#1 ran try_to_wake_up() for PID:5856, it placed PID:5856 on CPU#0's runqueue and ran resched_task() for CPU#0. But it decided to not send an IPI that no CPU - due to TS_POLLING. But CPU#0 never woke up after its NEED_RESCHED bit was set, and only rescheduled to PID:5856 upon the next lapic timer IRQ. The result was a 600+ usecs latency and a missed wakeup! the bug turned out to be an idle-wakeup bug introduced into the mainline kernel this summer via an optimization in the x86_64 tree: commit 495ab9c0 Author: Andi Kleen <ak@suse.de> Date: Mon Jun 26 13:59:11 2006 +0200 [PATCH] i386/x86-64/ia64: Move polling flag into thread_info_status During some profiling I noticed that default_idle causes a lot of memory traffic. I think that is caused by the atomic operations to clear/set the polling flag in thread_info. There is actually no reason to make this atomic - only the idle thread does it to itself, other CPUs only read it. So I moved it into ti->status. the problem is this type of change: if (!hlt_counter && boot_cpu_data.hlt_works_ok) { - clear_thread_flag(TIF_POLLING_NRFLAG); + current_thread_info()->status &= ~TS_POLLING; smp_mb__after_clear_bit(); while (!need_resched()) { local_irq_disable(); this changes clear_thread_flag() to an explicit clearing of TS_POLLING. clear_thread_flag() is defined as: clear_bit(flag, &ti->flags); and clear_bit() is a LOCK-ed atomic instruction on all x86 platforms: static inline void clear_bit(int nr, volatile unsigned long * addr) { __asm__ __volatile__( LOCK_PREFIX "btrl %1,%0" hence smp_mb__after_clear_bit() is defined as a simple compile barrier: #define smp_mb__after_clear_bit() barrier() but the explicit TS_POLLING clearing introduced by the patch: + current_thread_info()->status &= ~TS_POLLING; is not an atomic op! So the clearing of the TS_POLLING bit is freely reorderable with the reading of the NEED_RESCHED bit - and both now reside in different memory addresses. CPU idle wakeup very much depends on ordered memory ops, the clearing of the TS_POLLING flag must always be done before we test need_resched() and hit the idle instruction(s). [Symmetrically, the wakeup code needs to set NEED_RESCHED before it tests the TS_POLLING flag, so memory ordering is paramount.] Fernando's dual-core Athlon64 system has a sufficiently advanced memory ordering model so that it triggered this scenario very often. ( And it also turned out that the reason why these latencies never triggered on my testsystems is that i routinely use idle=poll, which was the only idle variant not affected by this bug. ) The fix is to change the smp_mb__after_clear_bit() to an smp_mb(), to act as an absolute barrier between the TS_POLLING write and the NEED_RESCHED read. This affects almost all idling methods (default, ACPI, APM), on all 3 x86 architectures: i386, x86_64, ia64. Signed-off-by: NIngo Molnar <mingo@elte.hu> Tested-by: NFernando Lopez-Lezcano <nando@ccrma.Stanford.EDU> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Hisashi Hifumi 提交于
In the current jbd code, if a buffer on BJ_SyncData list is dirty and not locked, the buffer is refiled to BJ_Locked list, submitted to the IO and waited for IO completion. But the fsstress test showed the case that when a buffer was already submitted to the IO just before the buffer_dirty(bh) check, the buffer was not waited for IO completion. Following patch solves this problem. If it is assumed that a buffer is submitted to the IO before the buffer_dirty(bh) check and still being written to disk, this buffer is refiled to BJ_Locked list. Signed-off-by: NHisashi Hifumi <hifumi.hisashi@oss.ntt.co.jp> Cc: Jan Kara <jack@ucw.cz> Cc: "Stephen C. Tweedie" <sct@redhat.com> Cc: <linux-ext4@vger.kernel.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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由 Ben Dooks 提交于
The general gpio driver includes seem to now depend on having <linux/workqueue.h> included before they are. Signed-off-by: NBen Dooks <ben-linux@fluff.org> Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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