- 17 Feb, 2006 9 commits
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Andi Kleen authored
Previously the numa hash code would be confused by holes in the node space and stop early. This is the first part of the fix for the non boot issue with empty nodes on Opterons. Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Andi Kleen authored
Code was refusing good SRATs because about 12K got lost somewhere. Allow less than 1MB of difference before rejecting it. Signed-off-by:
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Andi Kleen authored
But do it after everything else to risk less from recursive crashes. Signed-off-by:
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Andi Kleen authored
Otherwise it has no effect anyways. Signed-off-by:
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Andi Kleen authored
Many laptops have problems with ticking the local APIC timer in C2/C3. The code added earlier to use it by default on ATI didn't really work for them. Don't enable it when the system supports C2/C3. This doesn't fix the problem fully, but at least it's not worse than before. Signed-off-by:
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Andi Kleen authored
This caused a sigreturn with bad argument on a preemptible kernel to complain with Debug: sleeping function called from invalid context at /home/lsrc/quilt/linux/include/linux/rwsem.h:43 in_atomic():0, irqs_disabled():1 Call Trace: {__might_sleep+190} {profile_task_exit+21} {__do_exit+34} {do_wait+0} Signed-off-by: -
Andi Kleen authored
AMD SimNow!'s JIT doesn't like them at all in the guest. For distribution installation it's easiest if it's a boot time option. Also I moved the variable to a more appropiate place and make it independent from sysctl And marked __read_mostly which it is. Signed-off-by:
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Jan Beulich authored
Along with that, also suppress the memory touching altogether when the watchdog is not running, to eliminate needless crosstalk. Plus ad a call to it to make things consistent (one could also consider removing the call in enable_timer_nmi_watchdog()). Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Andi Kleen authored
... and enable 1394 by default. Signed-off-by:
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- 16 Feb, 2006 11 commits
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Linus Torvalds authored
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Kurt Hackel authored
Signed-off-by:
Kurt Hackel <Kurt.Hackel@oracle.com> Signed-off-by:
Mark Fasheh <mark.fasheh@oracle.com>
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Mark Fasheh authored
Disable automatic checkpointing of the journal - this is a relic from older ocfs2 days. Worth quite a bit of performance on longer running single node tests. Signed-off-by: -
Kurt Hackel authored
* fix a hang in recovery that occurred in dlmlock_remote. the $RECOVERY lock was never moved to the granted queue even after getting DLM_NORMAL back from the master node. Signed-off-by:
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Kurt Hackel authored
* add dlm_wait_for_node_death function to be used after receiving a network error. this will wait for the given timeout to allow the heartbeat callbacks to update the domain map. without this, some paths may spin and consume enough cpu that the heartbeat gets starved and never updates. Signed-off-by:
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Kurt Hackel authored
* fix a bug in dlm_convert_lock_handler where dlm_lockres_release_ast was being called even if no ast was ever reserved Signed-off-by:
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Kurt Hackel authored
* after successfully taking the $RECOVERY lock in EX mode, recheck to make sure that recovery has not already begun or completed on another node Signed-off-by:
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NeilBrown authored
If a tag is set for a node being deleted from a radix_tree, then that tag gets cleared from the parent of the node, even if it is set for some siblings of the node begin deleted. This patch changes the logic to include a test for any_tag_set similar to the logic a little futher down. Care is taken to ensure that 'nr_cleared_tags' remains equals to the number of entries in the 'tags' array which are set to '0' (which means that this tag is not set in the tree below pathp->node, and should be cleared at pathp->node and possibly above. [ Nick says: "Linus FYI, I was able to modify the radix tree test harness to catch the bug and can no longer trigger it after the fix. Resulting code passes all other harness tests as well of course." ] Signed-off-by:
Neil Brown <neilb@suse.de> Acked-by:
Nick Piggin <npiggin@suse.de> Signed-off-by:
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Linus Torvalds authored
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Linus Torvalds authored
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- 15 Feb, 2006 20 commits
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Bjorn Helgaas authored
Mention the "pci=nommconf" option in kernel-parameters.txt. Signed-off-by:
Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Andrew Morton authored
I get about 88 squillion of these when suspending an old ad450nx server. Cc: Pavel Roskin <proski@gnu.org> Cc: "Rafael J. Wysocki" <rjw@sisk.pl> Signed-off-by:
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Daniel Yeisley authored
The early initialization of cpu_to_node code as it is now only updates the cpu_to_node array, and does not update cpu_pda()->nodemember. This will cause numa_node_id() to return 0 on systems where CPU 0 is not on Node 0. This leads to a kernel panic in slab.c. I've tested the patch below on a 16 processor x86_64 ES7000-600 server, and no longer see the panic I saw with the original 2.6.16-rc3. Signed-off-by:
Dan Yeisley <dan.yeisley@unisys.com> Acked-by:
Andi Kleen <ak@muc.de> Signed-off-by:
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Roman Zippel authored
For two macros the arguments were expanded twice, change them to inline functions to avoid it. Signed-off-by:
Roman Zippel <zippel@linux-m68k.org> Acked-by:
Ingo Molnar <mingo@elte.hu> Acked-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
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Michael S. Tsirkin authored
Make new MADV_REMOVE, MADV_DONTFORK, MADV_DOFORK consistent across all arches. The idea is to make it possible to use them portably even before distros include them in libc headers. Move common flags to asm-generic/mman.h Signed-off-by:
Michael S. Tsirkin <mst@mellanox.co.il> Cc: Roland Dreier <rolandd@cisco.com> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by:
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Paul Jackson authored
Fix a latent bug in cpuset_exit() handling. If a task tried to allocate memory after calling cpuset_exit(), it oops'd in cpuset_update_task_memory_state() on a NULL cpuset pointer. So set the exiting tasks cpuset to the root cpuset instead of to NULL. A distro kernel hit this with an added kernel package that had just such a hook (allocating memory) in the exit code path. Signed-off-by:
Paul Jackson <pj@sgi.com> Signed-off-by:
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Andrew Morton authored
We're getting some softlockup false positives during heavy PIO operations. So poke the lockup detector. Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Benjamin LaHaise authored
Commit 296e0855: "kbuild: fix make -jN with multiple targets with O=..." causes a ~95% increase in build time for the kernel. Before: 4m21s after: 8m1.403s. Can we revert this until another approach is found? Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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Christian Trefzer authored
There were two mistakes in the register-read-on-(un)blank approach. - First, without proper register (un)locking the value read back will always be zero, and this is what I missed entirely until just now. Due to this, the logic could not be verified at all and I tried some bogus checks which are completely stupid. - Second, the LCD status bit will always be set to zero when the backlight has been turned off. Reading the value back during unblank will disable the LCD unconditionally, regardless of the state it is supposed to be in, since we set it to zero beforehand. So this is what we do now: - create a new variable in struct neofb_par, and use that to determine whether to read back registers (initialized to true) - before actually blanking the screen, read back the register to sense any possible change made through Fn key combo - use proper neoUnlock() / neoLock() to actually read something - every call to neofb_blank() determines if we read back next time: blanking disables readback, unblanking (FB_BLANK_UNBLANK) enables it This should give us a nice and clean state machine. Has been thoroughly tested on a Dell Latitude CPiA / NM220 Chip docked to a C/Dock2 with attached CRT in all possible combinations of LCD/CRT on/off. I changed the config via Fn key, let the console blank, unblanked by keypress - works flawlessly. Signed-off-by:
Christian Trefzer <ctrefzer@gmx.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by:
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Yasuyuki Kozakai authored
If skb->ip_summed is CHECKSUM_HW here, skb->csum includes checksum of actual IPv6 header and extension headers. Then such excess checksum must be subtruct when nf_conntrack calculates TCP/UDP checksum with pseudo IPv6 header. Spotted by Ben Skeggs. Signed-off-by:
Yasuyuki Kozakai <yasuyuki.kozakai@toshiba.co.jp> Signed-off-by:
Patrick McHardy <kaber@trash.net> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Yasuyuki Kozakai authored
Locally generated ICMPv6 errors should be associated with the conntrack of the original packet. Since the conntrack entry may not be in the hash tables (for the first packet), it must be manually attached. Signed-off-by:
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Yasuyuki Kozakai authored
TCP RSTs generated by the REJECT target should be associated with the conntrack of the original TCP packet. Since the conntrack entry is usually not is the hash tables, it must be manually attached. Signed-off-by:
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Yasuyuki Kozakai authored
Move registration of __nf_ct_attach to nf_conntrack_core to make it usable for IPv6 connection tracking as well. Signed-off-by:
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Yasuyuki Kozakai authored
NF_CONNTRACK_MARK is bool and depends on NF_CONNTRACK which is tristate. If a variable depends on NF_CONNTRACK_MARK and doesn't take care about NF_CONNTRACK, it can be y even if NF_CONNTRACK isn't y. NF_CT_ACCT have same issue, too. Signed-off-by:
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Patrick McHardy authored
nf_hook() is supposed to call the netfilter hook and return control of the packet back to the caller in case it may pass, the okfn is only used for queueing. Signed-off-by:
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Patrick McHardy authored
When a packet matching an IPsec policy is SNATed so it doesn't match any policy anymore it looses its xfrm bundle, which makes xfrm4_output_finish crash because of a NULL pointer dereference. This patch directs these packets to the original output path instead. Since the packets have already passed the POST_ROUTING hook, but need to start at the beginning of the original output path which includes another POST_ROUTING invocation, a flag is added to the IPCB to indicate that the packet was rerouted and doesn't need to pass the POST_ROUTING hook again. Signed-off-by:
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Oleg Nesterov authored
1. The tracee can go from ptrace_stop() to do_signal_stop() after __ptrace_unlink(p). 2. It is unsafe to __ptrace_unlink(p) while p->parent may wait for tasklist_lock in ptrace_detach(). Signed-off-by:
Oleg Nesterov <oleg@tv-sign.ru> Cc: Roland McGrath <roland@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Christoph Hellwig <hch@lst.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by:
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Oleg Nesterov authored
copy_process: attach_pid(p, PIDTYPE_PID, p->pid); attach_pid(p, PIDTYPE_TGID, p->tgid); What if kill_proc_info(p->pid) happens in between? copy_process() holds current->sighand.siglock, so we are safe in CLONE_THREAD case, because current->sighand == p->sighand. Otherwise, p->sighand is unlocked, the new process is already visible to the find_task_by_pid(), but have a copy of parent's 'struct pid' in ->pids[PIDTYPE_TGID]. This means that __group_complete_signal() may hang while doing do ... while (next_thread() != p) We can solve this problem if we reverse these 2 attach_pid()s: attach_pid() does wmb() group_send_sig_info() calls spin_lock(), which provides a read barrier. // Yes ? I don't think we can hit this race in practice, but still. Signed-off-by:
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Oleg Nesterov authored
There is a window after copy_process() unlocks ->sighand.siglock and before it adds the new thread to the thread list. In that window __group_complete_signal(SIGKILL) will not see the new thread yet, so this thread will start running while the whole thread group was supposed to exit. I beleive we have another good reason to place attach_pid(PID/TGID) under ->sighand.siglock. We can do the same for release_task()->__unhash_process() de_thread()->switch_exec_pids() After that we don't need tasklist_lock to iterate over the thread list, and we can simplify things, see for example do_sigaction() or sys_times(). Signed-off-by:
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Linus Torvalds authored
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