summaryrefslogtreecommitdiffstats
Commit message (Collapse)AuthorAgeFilesLines
* netdev: introduce dev_get_stats()Stephen Hemminger2008-11-198-18/+33
| | | | | | | | | | | | In order for the network device ops get_stats call to be immutable, the handling of the default internal network device stats block has to be changed. Add a new helper function which replaces the old use of internal_get_stats. Note: change return code to make it clear that the caller should not go changing the returned statistics. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* netdev: network device operations infrastructureStephen Hemminger2008-11-196-105/+259
| | | | | | | | | | | | | | | | | | | | | | | | This patch changes the network device internal API to move adminstrative operations out of the network device structure and into a separate structure. This patch involves some hackery to maintain compatablity between the new and old model, so all 300+ drivers don't have to be changed at once. For drivers that aren't converted yet, the netdevice_ops virt function list still resides in the net_device structure. For old protocols, the new net_device_ops are copied out to the old net_device pointers. After the transistion is completed the nag message can be changed to an WARN_ON, and the compatiablity code can be made configurable. Some function pointers aren't moved: * destructor can't be in net_device_ops because it may need to be referenced after the module is unloaded. * neighbor setup is manipulated in a couple of places that need special consideration * hard_start_xmit is in the fast path for transmit. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: af_unix should use KERN_INFO instead of KERN_DEBUGEric Dumazet2008-11-191-1/+1
| | | | | | | As spotted by Joe Perches, we should use KERN_INFO in unix_sock_destructor() Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/s390/ - csum_partial - remove unnecessary castsJoe Perches2008-11-191-4/+4
| | | | | | | | The first argument to csum_partial is const void * casts to char/u8 * are not necessary Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* include/net net/ - csum_partial - remove unnecessary castsJoe Perches2008-11-1910-19/+19
| | | | | | | | The first argument to csum_partial is const void * casts to char/u8 * are not necessary Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: inet_diag_handler structs can be constEric Dumazet2008-11-192-2/+2
| | | | | Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: make /proc/net/protocols namespace awareEric Dumazet2008-11-191-5/+24
| | | | | | | | | | | | | Converting /proc/net/protocols to be namespace aware is quite easy and permits us to use sock_prot_inuse_get(). This provides seperate counters for each protocol. For example we can really count TCPv6 sockets and TCPv4 sockets, while previously, we had the same value, and this value was not namespace aware. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: af_packet should update its inuse counterEric Dumazet2008-11-191-0/+2
| | | | | | | | | | | This patch is a preparation to namespace conversion of /proc/net/protocols In order to have relevant information for PACKET protocols, we should use sock_prot_inuse_add() to update a (percpu and pernamespace) counter of inuse sockets. Signed-off-by: Eric Dumazet <dada1@cosmosbay.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2008-11-18387-2523/+11924
|\ | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/isdn/i4l/isdn_net.c fs/cifs/connect.c
| * Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-blockLinus Torvalds2008-11-187-25/+42
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-2.6-block: block: hold extra reference to bio in blk_rq_map_user_iov() relay: fix cpu offline problem Release old elevator on change elevator block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash block/md: fix md autodetection block: make add_partition() return pointer to hd_struct block: fix add_partition() error path
| | * block: hold extra reference to bio in blk_rq_map_user_iov()Jens Axboe2008-11-181-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the size passed in is OK but we end up mapping too many segments, we call the unmap path directly like from IO completion. But from IO completion we have an extra reference to the bio, so this error case goes OOPS when it attempts to free and already free bio. Fix it by getting an extra reference to the bio before calling the unmap failure case. Reported-by: Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * relay: fix cpu offline problemLai Jiangshan2008-11-181-5/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | relay_open() will close allocated buffers when failed. but if cpu offlined, some buffer will not be closed. this patch fixed it. and did cleanup for relay_reset() too. Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * Release old elevator on change elevatorZhaolei2008-11-181-1/+7
| | | | | | | | | | | | | | | | | | | | | We should release old elevator when change to use a new one. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nashZhang, Yanmin2008-11-181-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We run into system boot failure with kernel 2.6.28-rc. We found it on a couple of machines, including T61 notebook, nehalem machine, and another HPC NX6325 notebook. All the machines use FedoraCore 8 or FedoraCore 9. With kernel prior to 2.6.28-rc, system boot doesn't fail. I debug it and locate the root cause. Pls. see http://bugzilla.kernel.org/show_bug.cgi?id=11899 https://bugzilla.redhat.com/show_bug.cgi?id=471517 As a matter of fact, there are 2 bugs. 1)root=/dev/sda1, system boot randomly fails. Mostly, boot for 5 times and fails once. nash has a bug. Some of its functions misuse return value 0. Sometimes, 0 means timeout and no uevent available. Sometimes, 0 means nash gets an uevent, but the uevent isn't block-related (for exmaple, usb). If by coincidence, kernel tells nash that uevents are available, but kernel also set timeout, nash might stops collecting other uevents in queue if current uevent isn't block-related. I work out a patch for nash to fix it. http://bugzilla.kernel.org/attachment.cgi?id=18858 2) root=LABEL=/, system always can't boot. initrd init reports switchroot fails. Here is an executation branch of nash when booting: (1) nash read /sys/block/sda/dev; Assume major is 8 (on my desktop) (2) nash query /proc/devices with the major number; It found line "8 sd"; (3) nash use 'sd' to search its own probe table to find device (DISK) type for the device and add it to its own list; (4) Later on, it probes all devices in its list to get filesystem labels; scsi register "8 sd" always. When major is 259, nash fails to find the device(DISK) type. I enables CONFIG_DEBUG_BLOCK_EXT_DEVT=y when compiling kernel, so 259 is picked up for device /dev/sda1, which causes nash to fail to find device (DISK) type. To fixing issue 2), I create a patch for nash and another patch for kernel. http://bugzilla.kernel.org/attachment.cgi?id=18859 http://bugzilla.kernel.org/attachment.cgi?id=18837 Below is the patch for kernel 2.6.28-rc4. It registers blkext, a new block device in proc/devices. With 2 patches on nash and 1 patch on kernel, I boot my machines for dozens of times without failure. Signed-off-by Zhang Yanmin <yanmin.zhang@linux.intel.com> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * block/md: fix md autodetectionTejun Heo2008-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Block ext devt conversion missed md_autodetect_dev() call in rescan_partitions() leaving md autodetect unable to see partitions. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * block: make add_partition() return pointer to hd_structTejun Heo2008-11-183-17/+19
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make add_partition() return pointer to the new hd_struct on success and ERR_PTR() value on failure. This change will be used to fix md autodetection bug. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Neil Brown <neilb@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| | * block: fix add_partition() error pathTejun Heo2008-11-181-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | Partition stats structure was not freed on devt allocation failure path. Fix it. Signed-off-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | suspend: use WARN not WARN_ON to print the messageArjan van de Ven2008-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By using WARN(), kerneloops.org can collect which component is causing the delay and make statistics about that. suspend_test_finish() is currently the number 2 item but unless we can collect who's causing it we're not going to be able to fix the hot topic ones.. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | Merge branch 'tracing-fixes-for-linus' of ↵Linus Torvalds2008-11-184-19/+135
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: kernel/profile.c: fix section mismatch warning function tracing: fix wrong pos computing when read buffer has been fulfilled tracing: fix mmiotrace resizing crash ring-buffer: no preempt for sched_clock() ring-buffer: buffer record on/off switch
| | * | kernel/profile.c: fix section mismatch warningRakib Mullick2008-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix section mismatch warning in kernel/profile.c Here, profile_nop function has been called from a non-init function create_hash_tables(void). Which generetes a section mismatch warning. Previously, create_hash_tables(void) was a init function. So, removing __init from create_hash_tables(void) requires profile_nop to be non-init. This patch makes profile_nop function inline and fixes the following warning: WARNING: vmlinux.o(.text+0x6ebb6): Section mismatch in reference from the function create_hash_tables() to the function .init.text:profile_nop() The function create_hash_tables() references the function __init profile_nop(). This is often because create_hash_tables lacks a __init annotation or the annotation of profile_nop is wrong. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | function tracing: fix wrong pos computing when read buffer has been fulfilledwalimis2008-11-161-11/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: make output of available_filter_functions complete phenomenon: The first value of dyn_ftrace_total_info is not equal with `cat available_filter_functions | wc -l`, but they should be equal. root cause: When printing functions with seq_printf in t_show, if the read buffer is just overflowed by current function record, then this function won't be printed to user space through read buffer, it will just be dropped. So we can't see this function printing. So, every time the last function to fill the read buffer, if overflowed, will be dropped. This also applies to set_ftrace_filter if set_ftrace_filter has more bytes than read buffer. fix: Through checking return value of seq_printf, if less than 0, we know this function doesn't be printed. Then we decrease position to force this function to be printed next time, in next read buffer. Another little fix is to show correct allocating pages count. Signed-off-by: walimis <walimisdev@gmail.com> Acked-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | tracing: fix mmiotrace resizing crashIngo Molnar2008-11-131-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pekka reported a crash when resizing the mmiotrace tracer (if only mmiotrace is enabled). This happens because in that case we do not allocate the max buffer, but we try to use it. Make ring_buffer_resize() idempotent against NULL buffers. Reported-by: Pekka Paalanen <pq@iki.fi> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | ring-buffer: no preempt for sched_clock()Steven Rostedt2008-11-121-1/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: disable preemption when calling sched_clock() The ring_buffer_time_stamp still uses sched_clock as its counter. But it is a bug to call it with preemption enabled. This requirement should not be pushed to the ring_buffer_time_stamp callers, so the ring_buffer_time_stamp needs to disable preemption when calling sched_clock. Signed-off-by: Steven Rostedt <srostedt@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | Merge branch 'devel' of ↵Ingo Molnar2008-11-113-6/+106
| | |\ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into tracing/urgent
| | | * | ring-buffer: buffer record on/off switchSteven Rostedt2008-11-113-6/+106
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: enable/disable ring buffer recording API added Several kernel developers have requested that there be a way to stop recording into the ring buffers with a simple switch that can also be enabled from userspace. This patch addes a new kernel API to the ring buffers called: tracing_on() tracing_off() When tracing_off() is called, all ring buffers will not be able to record into their buffers. tracing_on() will enable the ring buffers again. These two act like an on/off switch. That is, there is no counting of the number of times tracing_off or tracing_on has been called. A new file is added to the debugfs/tracing directory called tracing_on This allows for userspace applications to also flip the switch. echo 0 > debugfs/tracing/tracing_on disables the tracing. echo 1 > /debugfs/tracing/tracing_on enables it. Note, this does not disable or enable any tracers. It only sets or clears a flag that needs to be set in order for the ring buffers to write to their buffers. It is a global flag, and affects all ring buffers. The buffers start out with tracing_on enabled. There are now three flags that control recording into the buffers: tracing_on: which affects all ring buffer tracers. buffer->record_disabled: which affects an allocated buffer, which may be set if an anomaly is detected, and tracing is disabled. cpu_buffer->record_disabled: which is set by tracing_stop() or if an anomaly is detected. tracing_start can not reenable this if an anomaly occurred. The userspace debugfs/tracing/tracing_enabled is implemented with tracing_stop() but the user space code can not enable it if the kernel called tracing_stop(). Userspace can enable the tracing_on even if the kernel disabled it. It is just a switch used to stop tracing if a condition was hit. tracing_on is not for protecting critical areas in the kernel nor is it for stopping tracing if an anomaly occurred. This is because userspace can reenable it at any time. Side effect: With this patch, I discovered a dead variable in ftrace.c called tracing_on. This patch removes it. Signed-off-by: Steven Rostedt <srostedt@redhat.com>
| * | | | Merge branch 'sched-fixes-for-linus' of ↵Linus Torvalds2008-11-186-19/+35
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: cpuset: fix regression when failed to generate sched domains sched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers sched: fix kernel warning on /proc/sched_debug access sched: correct sched-rt-group.txt pathname in init/Kconfig
| | * | | | cpuset: fix regression when failed to generate sched domainsLi Zefan2008-11-182-10/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: properly rebuild sched-domains on kmalloc() failure When cpuset failed to generate sched domains due to kmalloc() failure, the scheduler should fallback to the single partition 'fallback_doms' and rebuild sched domains, but now it only destroys but not rebuilds sched domains. The regression was introduced by: | commit dfb512ec4834116124da61d6c1ee10fd0aa32bd6 | Author: Max Krasnyansky <maxk@qualcomm.com> | Date: Fri Aug 29 13:11:41 2008 -0700 | | sched: arch_reinit_sched_domains() must destroy domains to force rebuild After the above commit, partition_sched_domains(0, NULL, NULL) will only destroy sched domains and partition_sched_domains(1, NULL, NULL) will create the default sched domain. Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Cc: Max Krasnyansky <maxk@qualcomm.com> Cc: <stable@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | sched, signals: fix the racy usage of ->signal in ↵Oleg Nesterov2008-11-172-6/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | account_group_xxx/run_posix_cpu_timers Impact: fix potential NULL dereference Contrary to ad474caca3e2a0550b7ce0706527ad5ab389a4d4 changelog, other acct_group_xxx() helpers can be called after exit_notify() by timer tick. Thanks to Roland for pointing out this. Somehow I missed this simple fact when I read the original patch, and I am afraid I confused Frank during the discussion. Sorry. Fortunately, these helpers work with current, we can check ->exit_state to ensure that ->signal can't go away under us. Also, add the comment and compiler barrier to account_group_exec_runtime(), to make sure we load ->signal only once. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | sched: fix kernel warning on /proc/sched_debug accessIngo Molnar2008-11-161-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Luis Henriques reported that with CONFIG_PREEMPT=y + CONFIG_PREEMPT_DEBUG=y + CONFIG_SCHED_DEBUG=y + CONFIG_LATENCYTOP=y enabled, the following warning triggers when using latencytop: > [ 775.663239] BUG: using smp_processor_id() in preemptible [00000000] code: latencytop/6585 > [ 775.663303] caller is native_sched_clock+0x3a/0x80 > [ 775.663314] Pid: 6585, comm: latencytop Tainted: G W 2.6.28-rc4-00355-g9c7c354 #1 > [ 775.663322] Call Trace: > [ 775.663343] [<ffffffff803a94e4>] debug_smp_processor_id+0xe4/0xf0 > [ 775.663356] [<ffffffff80213f7a>] native_sched_clock+0x3a/0x80 > [ 775.663368] [<ffffffff80213e19>] sched_clock+0x9/0x10 > [ 775.663381] [<ffffffff8024550d>] proc_sched_show_task+0x8bd/0x10e0 > [ 775.663395] [<ffffffff8034466e>] sched_show+0x3e/0x80 > [ 775.663408] [<ffffffff8031039b>] seq_read+0xdb/0x350 > [ 775.663421] [<ffffffff80368776>] ? security_file_permission+0x16/0x20 > [ 775.663435] [<ffffffff802f4198>] vfs_read+0xc8/0x170 > [ 775.663447] [<ffffffff802f4335>] sys_read+0x55/0x90 > [ 775.663460] [<ffffffff8020c67a>] system_call_fastpath+0x16/0x1b > ... This breakage was caused by me via: 7cbaef9: sched: optimize sched_clock() a bit Change the calls to cpu_clock(). Reported-by: Luis Henriques <henrix@sapo.pt>
| | * | | | sched: correct sched-rt-group.txt pathname in init/KconfigAdrian Knoth2008-11-131-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | init/Kconfig directs the user to Documentation/sched-rt-group.txt, but the file is actually in Documentation/scheduler/sched-rt-group.txt. This patch corrects the pathname mentioned in init/Kconfig. Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds2008-11-182-5/+7
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: swiotlb: use coherent_dma_mask in alloc_coherent MAINTAINERS: remove me as RAID maintainer
| | * | | | | swiotlb: use coherent_dma_mask in alloc_coherentFUJITA Tomonori2008-11-171-3/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Impact: fix DMA buffer allocation coherency bug in certain configs This patch fixes swiotlb to use dev->coherent_dma_mask in swiotlb_alloc_coherent(). coherent_dma_mask is a subset of dma_mask (equal to it most of the time), enumerating the address range that a given device is able to DMA to/from in a cache-coherent way. But currently, swiotlb uses dev->dma_mask in alloc_coherent() implicitly via address_needs_mapping(), but alloc_coherent is really supposed to use coherent_dma_mask. This bug could break drivers that uses smaller coherent_dma_mask than dma_mask (though the current code works for the majority that use the same mask for coherent_dma_mask and dma_mask). Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: tony.luck@intel.com Signed-off-by: Ingo Molnar <mingo@elte.hu>
| | * | | | | MAINTAINERS: remove me as RAID maintainerIngo Molnar2008-11-161-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Neil has been the maintainer of the RAID/MD code for a long time, remove me as a co-maintainer. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2008-11-1811-32/+49
| |\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: Blackfin arch: fix a broken define in dma-mapping Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash Blackfin arch: fix bug - shared lib function in L2 failed be called Blackfin arch: fix incorrect limit check for bf54x check_gpio Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz. Blackfin arch: dont warn when running a kernel on the oldest supported silicon Blackfin arch: fix bug - kernel build with write back policy fails to be booted up Blackfin arch: fix bug - dmacopy test case fail on all platform Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSE Blackfin arch: don't copy bss when copying L1 Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patch Blackfin arch: handle case of d_path() returning error in decode_address()
| | * | | | | | Blackfin arch: fix a broken define in dma-mappingMike Frysinger2008-11-181-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dma_mapping_error is an actual function, so fix broken define with a real inline stub Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crashGraf Yang2008-11-181-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - shared lib function in L2 failed be calledJie Zhang2008-10-282-5/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow user space to access L2 SRAM. Signed-off-by: Jie Zhang <jie.zhang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix incorrect limit check for bf54x check_gpioMike Frysinger2008-10-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz.Michael Hennerich2008-10-281-7/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: dont warn when running a kernel on the oldest supported siliconMike Frysinger2008-10-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - kernel build with write back policy fails to be ↵Mike Frysinger2008-10-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | booted up Make sure IFLUSH is not the last instruction in the hardware loop to avoid infinite core stall. The dcache/icache function that only gets used in writeback mode was putting IFLUSH as the last instruction in the hardware loop ... we know from design that this may often lead to inifite core stalling, so switch the FLUSH/IFLUSH order. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - dmacopy test case fail on all platformMike Frysinger2008-11-181-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cache code I added flushes 1 line too little if the start address is not aligned to the cache size. Cache align the start address so that when we straddle cache aligns, we get the right count. Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSERobin Getz2008-10-281-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: don't copy bss when copying L1Mike Frysinger2008-10-272-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | when copying L1 regions, go to the start of bss rather than end since we have code to zero it out already Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patchGraf Yang2008-10-271-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | only if the cplb block overlapped with kernel area, this cplb need be locked Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| | * | | | | | Blackfin arch: handle case of d_path() returning error in decode_address()Tim Pepper2008-10-271-2/+5
| | | |_|_|_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | d_path() can return an error. Most of its callers do something or other to make up something sane in that case. Do similar for blackfin's decode_address() call to d_path(). Signed-off-by: Tim Pepper <lnxninja@linux.vnet.ibm.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
| * | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2008-11-184-19/+94
| |\ \ \ \ \ \ | | |/ / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6: ALSA: hda - Fix resume of GPIO unsol event for STAC/IDT ALSA: hda - Add quirks for HP Pavilion DV models ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx() ALSA: hda - Check model type instead of SSID in patch_92hd71bxx() ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_device ALSA: hda: STAC_VREF_EVENT value change ALSA: hda - Missing NULL check in hda_beep.c ALSA: hda - Add digital beep playback switch for STAC/IDT codecs
| | | | | | |
| | | \ \ \ \
| | *-. \ \ \ \ Merge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linusTakashi Iwai2008-11-184-19/+94
| | |\ \ \ \ \ \ | | | |_|/ / / / | | |/| | | | |
| | | | * | | | ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_deviceJulia Lawall2008-11-151-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Error handling code following a kzalloc should free the allocated data. The error handling code is adjusted to call pci_disable_device(pci); as well, as done later in the function The semantic match that finds the problem is as follows: (http://www.emn.fr/x-info/coccinelle/) // <smpl> @r exists@ local idexpression x; statement S; expression E; identifier f,l; position p1,p2; expression *ptr != NULL; @@ ( if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S | x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...); ... if (x == NULL) S ) <... when != x when != if (...) { <+...x...+> } x->f = E ...> ( return \(0\|<+...x...+>\|ptr\); | return@p2 ...; ) @script:python@ p1 << r.p1; p2 << r.p2; @@ print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line) // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: Takashi Iwai <tiwai@suse.de>
| | | * | | | | ALSA: hda - Fix resume of GPIO unsol event for STAC/IDTTakashi Iwai2008-11-181-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use cached write for setting the GPIO unsolicited event mask to be restored properly at resume. Signed-off-by: Takashi Iwai <tiwai@suse.de>
generated by cgit (git 2.34.1) at 2024-11-14 01:29:38 +0000