- 07 1月, 2011 4 次提交
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由 Nick Piggin 提交于
percpu_counter library generates quite nasty code, so unless you need to dynamically allocate counters or take fast approximate value, a simple per cpu set of counters is much better. The percpu_counter can never be made to work as well, because it has an indirection from pointer to percpu memory, and it can't use direct this_cpu_inc interfaces because it doesn't use static PER_CPU data, so code will always be worse. In the fastpath, it is the difference between this: incl %gs:nr_dentry # nr_dentry and this: movl percpu_counter_batch(%rip), %edx # percpu_counter_batch, movl $1, %esi #, movq $nr_dentry, %rdi #, call __percpu_counter_add # (plus I clobber registers) __percpu_counter_add: pushq %rbp # movq %rsp, %rbp #, subq $32, %rsp #, movq %rbx, -24(%rbp) #, movq %r12, -16(%rbp) #, movq %r13, -8(%rbp) #, movq %rdi, %rbx # fbc, fbc #APP # 216 "/home/npiggin/usr/src/linux-2.6/arch/x86/include/asm/thread_info.h" 1 movq %gs:kernel_stack,%rax #, pfo_ret__ # 0 "" 2 #NO_APP incl -8124(%rax) # <variable>.preempt_count movq 32(%rdi), %r12 # <variable>.counters, tcp_ptr__ #APP # 78 "lib/percpu_counter.c" 1 add %gs:this_cpu_off, %r12 # this_cpu_off, tcp_ptr__ # 0 "" 2 #NO_APP movslq (%r12),%r13 #* tcp_ptr__, tmp73 movslq %edx,%rax # batch, batch addq %rsi, %r13 # amount, count cmpq %rax, %r13 # batch, count jge .L27 #, negl %edx # tmp76 movslq %edx,%rdx # tmp76, tmp77 cmpq %rdx, %r13 # tmp77, count jg .L28 #, .L27: movq %rbx, %rdi # fbc, call _raw_spin_lock # addq %r13, 8(%rbx) # count, <variable>.count movq %rbx, %rdi # fbc, movl $0, (%r12) #,* tcp_ptr__ call _raw_spin_unlock # .L29: #APP # 216 "/home/npiggin/usr/src/linux-2.6/arch/x86/include/asm/thread_info.h" 1 movq %gs:kernel_stack,%rax #, pfo_ret__ # 0 "" 2 #NO_APP decl -8124(%rax) # <variable>.preempt_count movq -8136(%rax), %rax #, D.14625 testb $8, %al #, D.14625 jne .L32 #, .L31: movq -24(%rbp), %rbx #, movq -16(%rbp), %r12 #, movq -8(%rbp), %r13 #, leave ret .p2align 4,,10 .p2align 3 .L28: movl %r13d, (%r12) # count,* jmp .L29 # .L32: call preempt_schedule # .p2align 4,,6 jmp .L31 # .size __percpu_counter_add, .-__percpu_counter_add .p2align 4,,15 Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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由 Nick Piggin 提交于
The nr_unused counters count the number of objects on an LRU, and as such they are synchronized with LRU object insertion and removal and scanning, and protected under the LRU lock. Making it per-cpu does not actually get any concurrency improvements because of this lock, and summing the counter is much slower, and incrementing/decrementing it costs more code size and is slower too. These counters should stay per-LRU, which currently means global. Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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由 Nick Piggin 提交于
This is a nasty and error prone API. It is no longer used, remove it. Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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由 Nick Piggin 提交于
d_validate has been broken for a long time. kmem_ptr_validate does not guarantee that a pointer can be dereferenced if it can go away at any time. Even rcu_read_lock doesn't help, because the pointer might be queued in RCU callbacks but not executed yet. So the parent cannot be checked, nor the name hashed. The dentry pointer can not be touched until it can be verified under lock. Hashing simply cannot be used. Instead, verify the parent/child relationship by traversing parent's d_child list. It's slow, but only ncpfs and the destaged smbfs care about it, at this point. Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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- 05 1月, 2011 5 次提交
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由 Nick Piggin 提交于
This reverts commit 3825bdb7. You cannot dget() a dentry without having a reference, or holding a lock that guarantees it remains valid. Signed-off-by: NNick Piggin <npiggin@kernel.dk>
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由 Linus Torvalds 提交于
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6由 Linus Torvalds 提交于
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: ipv4/route.c: respect prefsrc for local routes bridge: stp: ensure mac header is set bridge: fix br_multicast_ipv6_rcv for paged skbs atl1: fix oops when changing tx/rx ring params drivers/atm/atmtcp.c: add missing atm_dev_put starfire: Fix dma_addr_t size test for MIPS tg3: fix return value check in tg3_read_vpd() Broadcom CNIC core network driver: fix mem leak on allocation failures in cnic_alloc_uio_rings() ISDN, Gigaset: Fix memory leak in do_disconnect_req() CAN: Use inode instead of kernel address for /proc file skfp: testing the wrong variable in skfp_driver_init() ppp: allow disabling multilink protocol ID compression ehea: Avoid changing vlan flags ueagle-atm: fix PHY signal initialization race
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由 Joel Sing 提交于
The preferred source address is currently ignored for local routes, which results in all local connections having a src address that is the same as the local dst address. Fix this by respecting the preferred source address when it is provided for local routes. This bug can be demonstrated as follows: # ifconfig dummy0 192.168.0.1 # ip route show table local | grep local.*dummy0 local 192.168.0.1 dev dummy0 proto kernel scope host src 192.168.0.1 # ip route change table local local 192.168.0.1 dev dummy0 \ proto kernel scope host src 127.0.0.1 # ip route show table local | grep local.*dummy0 local 192.168.0.1 dev dummy0 proto kernel scope host src 127.0.0.1 We now establish a local connection and verify the source IP address selection: # nc -l 192.168.0.1 3128 & # nc 192.168.0.1 3128 & # netstat -ant | grep 192.168.0.1:3128.*EST tcp 0 0 192.168.0.1:3128 192.168.0.1:33228 ESTABLISHED tcp 0 0 192.168.0.1:33228 192.168.0.1:3128 ESTABLISHED Signed-off-by: NJoel Sing <jsing@google.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Christoph Hellwig 提交于
The ->trim_fs has been removed meanwhile, so remove it from the documentation as well. Signed-off-by: NChristoph Hellwig <hch@lst.de> Reported-by: NRyusuke Konishi <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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- 04 1月, 2011 12 次提交
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由 Linus Torvalds 提交于
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: pxa: fix page table corruption on resume ARM: it8152: add IT8152_LAST_IRQ definition to fix build error ARM: pxa: PXA_ESERIES depends on FB_W100. ARM: 6605/1: Add missing include "asm/memory.h" ARM: 6540/1: Stop irqsoff trace on return to user ARM: 6537/1: update Nomadik, U300 and Ux500 maintainers ARM: 6536/1: Add missing SZ_{32,64,128} ARM: fix cache-feroceon-l2 after stack based kmap_atomic() ARM: fix cache-xsc3l2 after stack based kmap_atomic() ARM: get rid of kmap_high_l1_vipt() ARM: smp: avoid incrementing mm_users on CPU startup ARM: pxa: PXA_ESERIES depends on FB_W100.
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由 Andrew Morton 提交于
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=25702Reported-by: NMartin Ettl <ettl.martin@gmx.de> Cc: David Howells <dhowells@redhat.com> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Mimi Zohar 提交于
If security_filter_rule_init() doesn't return a rule, then not everything is as fine as the return code implies. This bug only occurs when the LSM (eg. SELinux) is disabled at runtime. Adding an empty LSM rule causes ima_match_rules() to always succeed, ignoring any remaining rules. default IMA TCB policy: # PROC_SUPER_MAGIC dont_measure fsmagic=0x9fa0 # SYSFS_MAGIC dont_measure fsmagic=0x62656572 # DEBUGFS_MAGIC dont_measure fsmagic=0x64626720 # TMPFS_MAGIC dont_measure fsmagic=0x01021994 # SECURITYFS_MAGIC dont_measure fsmagic=0x73636673 < LSM specific rule > dont_measure obj_type=var_log_t measure func=BPRM_CHECK measure func=FILE_MMAP mask=MAY_EXEC measure func=FILE_CHECK mask=MAY_READ uid=0 Thus without the patch, with the boot parameters 'tcb selinux=0', adding the above 'dont_measure obj_type=var_log_t' rule to the default IMA TCB measurement policy, would result in nothing being measured. The patch prevents the default TCB policy from being replaced. Signed-off-by: NMimi Zohar <zohar@us.ibm.com> Cc: James Morris <jmorris@namei.org> Acked-by: NSerge Hallyn <serge.hallyn@canonical.com> Cc: David Safford <safford@watson.ibm.com> Cc: <stable@kernel.org> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Florian Westphal 提交于
commit bf9ae538 (llc: use dev_hard_header) removed the skb_reset_mac_header call from llc_mac_hdr_init. This seems fine itself, but br_send_bpdu() invokes ebtables LOCAL_OUT. We oops in ebt_basic_match() because it assumes eth_hdr(skb) returns a meaningful result. Cc: acme@ghostprotocols.net References: https://bugzilla.kernel.org/show_bug.cgi?id=24532Signed-off-by: NFlorian Westphal <fw@strlen.de> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Linus Torvalds 提交于
Merge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf: Fix callchain hit bad cast on ascii display arch/x86/oprofile/op_model_amd.c: Perform initialisation on a single CPU watchdog: Improve initialisation error message and documentation
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6由 Linus Torvalds 提交于
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: [media] em28xx: radio_fops should also use unlocked_ioctl [media] wm8775: Revert changeset fcb97573 to avoid a regression [media] cx25840: Prevent device probe failure due to volume control ERANGE error
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git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx由 Linus Torvalds 提交于
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: dmaengine: provide dummy functions for DMA_ENGINE=n mv_xor: fix race in tasklet function
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由 Jan Beulich 提交于
The function can't be __init itself (being called from some sysfs handler), and hence none of the functions it calls can be either. Signed-off-by: NJan Beulich <jbeulich@novell.com> Acked-by: NRandy Dunlap <randy.dunlap@oracle.com> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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由 Tomas Winkler 提交于
use pskb_may_pull to access ipv6 header correctly for paged skbs It was omitted in the bridge code leading to crash in blind __skb_pull since the skb is cloned undonditionally we also simplify the the exit path this fixes bug https://bugzilla.kernel.org/show_bug.cgi?id=25202 Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 IEEE 802.11: authenticated Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 IEEE 802.11: associated (aid 2) Dec 15 14:36:40 User-PC hostapd: wlan0: STA 00:15:00:60:5d:34 RADIUS: starting accounting session 4D0608A3-00000005 Dec 15 14:36:41 User-PC kernel: [175576.120287] ------------[ cut here ]------------ Dec 15 14:36:41 User-PC kernel: [175576.120452] kernel BUG at include/linux/skbuff.h:1178! Dec 15 14:36:41 User-PC kernel: [175576.120609] invalid opcode: 0000 [#1] SMP Dec 15 14:36:41 User-PC kernel: [175576.120749] last sysfs file: /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/uevent Dec 15 14:36:41 User-PC kernel: [175576.121035] Modules linked in: approvals binfmt_misc bridge stp llc parport_pc ppdev arc4 iwlagn snd_hda_codec_realtek iwlcore i915 snd_hda_intel mac80211 joydev snd_hda_codec snd_hwdep snd_pcm snd_seq_midi drm_kms_helper snd_rawmidi drm snd_seq_midi_event snd_seq snd_timer snd_seq_device cfg80211 eeepc_wmi usbhid psmouse intel_agp i2c_algo_bit intel_gtt uvcvideo agpgart videodev sparse_keymap snd shpchp v4l1_compat lp hid video serio_raw soundcore output snd_page_alloc ahci libahci atl1c Dec 15 14:36:41 User-PC kernel: [175576.122712] Dec 15 14:36:41 User-PC kernel: [175576.122769] Pid: 0, comm: kworker/0:0 Tainted: G W 2.6.37-rc5-wl+ #3 1015PE/1016P Dec 15 14:36:41 User-PC kernel: [175576.123012] EIP: 0060:[<f83edd65>] EFLAGS: 00010283 CPU: 1 Dec 15 14:36:41 User-PC kernel: [175576.123193] EIP is at br_multicast_rcv+0xc95/0xe1c [bridge] Dec 15 14:36:41 User-PC kernel: [175576.123362] EAX: 0000001c EBX: f5626318 ECX: 00000000 EDX: 00000000 Dec 15 14:36:41 User-PC kernel: [175576.123550] ESI: ec512262 EDI: f5626180 EBP: f60b5ca0 ESP: f60b5bd8 Dec 15 14:36:41 User-PC kernel: [175576.123737] DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068 Dec 15 14:36:41 User-PC kernel: [175576.123902] Process kworker/0:0 (pid: 0, ti=f60b4000 task=f60a8000 task.ti=f60b0000) Dec 15 14:36:41 User-PC kernel: [175576.124137] Stack: Dec 15 14:36:41 User-PC kernel: [175576.124181] ec556500 f6d06800 f60b5be8 c01087d8 ec512262 00000030 00000024 f5626180 Dec 15 14:36:41 User-PC kernel: [175576.124181] f572c200 ef463440 f5626300 3affffff f6d06dd0 e60766a4 000000c4 f6d06860 Dec 15 14:36:41 User-PC kernel: [175576.124181] ffffffff ec55652c 00000001 f6d06844 f60b5c64 c0138264 c016e451 c013e47d Dec 15 14:36:41 User-PC kernel: [175576.124181] Call Trace: Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c01087d8>] ? sched_clock+0x8/0x10 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0138264>] ? enqueue_entity+0x174/0x440 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c016e451>] ? sched_clock_cpu+0x131/0x190 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c013e47d>] ? select_task_rq_fair+0x2ad/0x730 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0524fc1>] ? nf_iterate+0x71/0x90 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f83e4914>] ? br_handle_frame_finish+0x184/0x220 [bridge] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f83e4790>] ? br_handle_frame_finish+0x0/0x220 [bridge] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f83e46e9>] ? br_handle_frame+0x189/0x230 [bridge] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f83e4790>] ? br_handle_frame_finish+0x0/0x220 [bridge] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f83e4560>] ? br_handle_frame+0x0/0x230 [bridge] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c04ff026>] ? __netif_receive_skb+0x1b6/0x5b0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c04f7a30>] ? skb_copy_bits+0x110/0x210 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0503a7f>] ? netif_receive_skb+0x6f/0x80 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f82cb74c>] ? ieee80211_deliver_skb+0x8c/0x1a0 [mac80211] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f82cc836>] ? ieee80211_rx_handlers+0xeb6/0x1aa0 [mac80211] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c04ff1f0>] ? __netif_receive_skb+0x380/0x5b0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c016e242>] ? sched_clock_local+0xb2/0x190 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c012b688>] ? default_spin_lock_flags+0x8/0x10 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c05d83df>] ? _raw_spin_lock_irqsave+0x2f/0x50 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f82cd621>] ? ieee80211_prepare_and_rx_handle+0x201/0xa90 [mac80211] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f82ce154>] ? ieee80211_rx+0x2a4/0x830 [mac80211] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f815a8d6>] ? iwl_update_stats+0xa6/0x2a0 [iwlcore] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f8499212>] ? iwlagn_rx_reply_rx+0x292/0x3b0 [iwlagn] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c05d83df>] ? _raw_spin_lock_irqsave+0x2f/0x50 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f8483697>] ? iwl_rx_handle+0xe7/0x350 [iwlagn] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<f8486ab7>] ? iwl_irq_tasklet+0xf7/0x5c0 [iwlagn] Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c01aece1>] ? __rcu_process_callbacks+0x201/0x2d0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0150d05>] ? tasklet_action+0xc5/0x100 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0150a07>] ? __do_softirq+0x97/0x1d0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c05d910c>] ? nmi_stack_correct+0x2f/0x34 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0150970>] ? __do_softirq+0x0/0x1d0 Dec 15 14:36:41 User-PC kernel: [175576.124181] <IRQ> Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c01508f5>] ? irq_exit+0x65/0x70 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c05df062>] ? do_IRQ+0x52/0xc0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c01036b0>] ? common_interrupt+0x30/0x38 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c03a1fc2>] ? intel_idle+0xc2/0x160 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c04daebb>] ? cpuidle_idle_call+0x6b/0x100 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c0101dea>] ? cpu_idle+0x8a/0xf0 Dec 15 14:36:41 User-PC kernel: [175576.124181] [<c05d2702>] ? start_secondary+0x1e8/0x1ee Cc: David Miller <davem@davemloft.net> Cc: Johannes Berg <johannes@sipsolutions.net> Cc: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: NTomas Winkler <tomas.winkler@intel.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 J. K. Cliburn 提交于
Commit 3f5a2a71 zeroes out the statistics message block (SMB) and coalescing message block (CMB) when adapter ring resources are freed. This is desirable behavior, but, as a side effect, the commit leads to an oops when atl1_set_ringparam() attempts to alter the number of rx or tx elements in the ring buffer (by using ethtool -G, for example). We don't want SMB or CMB to change during this operation. Modify atl1_set_ringparam() to preserve SMB and CMB when changing ring parameters. Cc: stable@kernel.org Signed-off-by: NJay Cliburn <jcliburn@gmail.com> Reported-by: NTõnu Raitviir <jussuf@linux.ee> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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由 Ingo Molnar 提交于
Merge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/random-tracing into perf/urgent
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- 03 1月, 2011 16 次提交
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由 Aric D. Blumer 提交于
Before this patch, the following error would sometimes occur after a resume on pxa3xx: /path/to/mm/memory.c:144: bad pmd 8040542e. The problem was that a temporary page table mapping was being improperly restored. The PXA3xx resume code creates a temporary mapping of resume_turn_on_mmu to avoid a prefetch abort. The pxa3xx_resume_after_mmu code requires that the r1 register holding the address of this mapping not be modified, however, resume_turn_on_mmu does modify it. It is mostly correct in that r1 receives the base table address, but it may also get other bits in 13:0. This results in pxa3xx_resume_after_mmu restoring the original mapping to the wrong place, corrupting memory and leaving the temporary mapping in place. Signed-off-by: NMatt Reimer <mreimer@sdgsystems.com> Signed-off-by: NEric Miao <eric.y.miao@gmail.com>
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由 Mike Rapoport 提交于
The commit 6ac6b817 (ARM: pxa: encode IRQ number into .nr_irqs) removed definition of ITE_LAST_IRQ which caused the following build error: CC arch/arm/common/it8152.o arch/arm/common/it8152.c: In function 'it8152_init_irq': arch/arm/common/it8152.c:86: error: 'IT8152_LAST_IRQ' undeclared (first use in this function) arch/arm/common/it8152.c:86: error: (Each undeclared identifier is reported only once arch/arm/common/it8152.c:86: error: for each function it appears in.) make[2]: *** [arch/arm/common/it8152.o] Error 1 Defining the IT8152_LAST_IRQ in the arch/arm/include/hardware/it8152.c fixes the build. Signed-off-by: NMike Rapoport <mike@compulab.co.il> Signed-off-by: NEric Miao <eric.y.miao@gmail.com>
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由 Lennert Buytenhek 提交于
As arch/arm/mach-pxa/eseries.c references w100fb_gpio_{read,write}() directly. Signed-off-by: NLennert Buytenhek <buytenh@secretlab.ca> Signed-off-by: NEric Miao <eric.y.miao@gmail.com>
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由 Frederic Weisbecker 提交于
ipchain__fprintf_graph() casts the number of hits in a branch as an int, which means we lose its highests bits. This results in meaningless number of callchain hits in perf.data that have a high number of hits recorded, typically those that have callchain branches hits appearing more than INT_MAX. This happens easily as those are pondered by the event period. Reported-by: NNick Piggin <npiggin@kernel.dk> Signed-off-by: NFrederic Weisbecker <fweisbec@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Paul Mackerras <paulus@samba.org>
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由 Robert Richter 提交于
Disable preemption in init_ibs(). The function only checks the ibs capabilities and sets up pci devices (if necessary). It runs only on one cpu but operates with the local APIC and some MSRs, thus it is better to disable preemption. [ 7.034377] BUG: using smp_processor_id() in preemptible [00000000] code: modprobe/483 [ 7.034385] caller is setup_APIC_eilvt+0x155/0x180 [ 7.034389] Pid: 483, comm: modprobe Not tainted 2.6.37-rc1-20101110+ #1 [ 7.034392] Call Trace: [ 7.034400] [<ffffffff812a2b72>] debug_smp_processor_id+0xd2/0xf0 [ 7.034404] [<ffffffff8101e985>] setup_APIC_eilvt+0x155/0x180 [ ... ] Addresses https://bugzilla.kernel.org/show_bug.cgi?id=22812 Reported-by: <atswartz@gmail.com> Signed-off-by: NRobert Richter <robert.richter@amd.com> Cc: oprofile-list@lists.sourceforge.net <oprofile-list@lists.sourceforge.net> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Rafael J. Wysocki <rjw@sisk.pl> Cc: Dan Carpenter <error27@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: <stable@kernel.org> [2.6.37.x] LKML-Reference: <20110103111514.GM4739@erda.amd.com> [ small cleanups ] Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Hans Verkuil 提交于
em28xx uses core assisted locking, so it shouldn't use .ioctl. The .ioctl callback was replaced by .unlocked_ioctl for video nodes, but not for radio nodes. This is now corrected. Signed-off-by: NHans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Mauro Carvalho Chehab 提交于
It seems that cx88 and ivtv use wm8775 on some different modes. The patch that added support for a board with wm8775 broke ivtv boards with this device. As we're too close to release 2.6.37, let's just revert it. Reported-by: NAndy Walls <awalls@md.metrocast.net> Reported-by: NEric Sharkey <eric@lisaneric.org> Reported-by: NAuric <auric@aanet.com.au> Reported by: David Gesswein <djg@pdp8online.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Andy Walls 提交于
This patch fixes a regression that crept into 2.6.36. The volume control scale in the cx25840 driver has an unusual mapping from register values to v4l2 volume control values. Enforce the mapping limits, so that the default volume control setting does not fall out of bounds to prevent the cx25840 module device probe from failing. Signed-off-by: NAndy Walls <awalls@md.metrocast.net> Cc: Hans Verkuil <hverkuil@xs4all.nl> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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由 Guennadi Liakhovetski 提交于
This lets drivers, optionally using the dmaengine, build with DMA_ENGINE unselected. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Saeed Bishara 提交于
use mv_xor_slot_cleanup() instead of __mv_xor_slot_cleanup() as the former function aquires the spin lock that needed to protect the drivers data. Cc: <stable@kernel.org> Signed-off-by: NSaeed Bishara <saeed@marvell.com> Signed-off-by: NDan Williams <dan.j.williams@intel.com>
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由 Axel Lin 提交于
This patch fixes below build error by adding the missing asm/memory.h, which is needed for arch_is_coherent(). $ make pxa3xx_defconfig; make CC init/do_mounts_rd.o In file included from include/linux/list_bl.h:5, from include/linux/rculist_bl.h:7, from include/linux/dcache.h:7, from include/linux/fs.h:381, from init/do_mounts_rd.c:3: include/linux/bit_spinlock.h: In function 'bit_spin_unlock': include/linux/bit_spinlock.h:61: error: implicit declaration of function 'arch_is_coherent' make[1]: *** [init/do_mounts_rd.o] Error 1 make: *** [init] Error 2 Signed-off-by: NAxel Lin <axel.lin@gmail.com> Acked-by: NPeter Huewe <peterhuewe@gmx.de> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Ben Hutchings 提交于
The error message 'NMI watchdog failed to create perf event...' does not make it clear that this is a fatal error for the watchdog. It also currently prints the error value as a pointer, rather than extracting the error code with PTR_ERR(). Fix that. Add a note to the description of the 'nowatchdog' kernel parameter to associate it with this message. Reported-by: NCesare Leonardi <celeonar@gmail.com> Signed-off-by: NBen Hutchings <ben@decadent.org.uk> Cc: 599368@bugs.debian.org Cc: 608138@bugs.debian.org Cc: Don Zickus <dzickus@redhat.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: <stable@kernel.org> # .37.x and later LKML-Reference: <1294009362.3167.126.camel@localhost> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Maurus Cuelenaere 提交于
The owner field was removed from struct attribute in 6fd69dc5, so don't assign it anymore. Signed-off-by: NMaurus Cuelenaere <mcuelenaere@gmail.com> Signed-off-by: NGuenter Roeck <guenter.roeck@ericsson.com>
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git://git.kernel.org/pub/scm/virt/kvm/kvm由 Linus Torvalds 提交于
* 'kvm-updates/2.6.37' of git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: i8259: initialize isr_ack KVM: MMU: Fix incorrect direct gfn for unpaged mode shadow
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6由 Linus Torvalds 提交于
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda: Use LPIB quirk for Dell Inspiron m101z/1120 sound: Prevent buffer overflow in OSS load_mixer_volumes ASoC: codecs: wm8753: Fix register cache incoherency ASoC: codecs: wm9090: Fix register cache incoherency ASoC: codecs: wm8962: Fix register cache incoherency ASoC: codecs: wm8955: Fix register cache incoherency ASoC: codecs: wm8904: Fix register cache incoherency ASoC: codecs: wm8741: Fix register cache incoherency ASoC: codecs: wm8523: Fix register cache incoherency ASoC: codecs: max98088: Fix register cache incoherency ASoC: codecs: Add missing control_type initialization
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git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6由 Linus Torvalds 提交于
* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6: kconfig: fix undesirable side effect of adding "visible" menu attribute
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- 02 1月, 2011 2 次提交
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由 Takashi Iwai 提交于
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由 Avi Kivity 提交于
isr_ack is never initialized. So, until the first PIC reset, interrupts may fail to be injected. This can cause Windows XP to fail to boot, as reported in the fallout from the fix to https://bugzilla.kernel.org/show_bug.cgi?id=21962. Reported-and-tested-by: NNicolas Prochazka <prochazka.nicolas@gmail.com> Signed-off-by: NAvi Kivity <avi@redhat.com>
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- 01 1月, 2011 1 次提交
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由 Julia Lawall 提交于
The earlier call to atm_dev_lookup increases the reference count of dev, so decrease it on the way out. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x, E; constant C; @@ x = atm_dev_lookup(...); ... when != false x != NULL when != true x == NULL when != \(E = x\|x = E\) when != atm_dev_put(dev); *return -C; // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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