20 Apr, 2008
20 commits
-
Add a new function cpumask_scnprintf_len() to return the number of
characters needed to display "len" cpumask bits. The current method
of allocating NR_CPUS bytes is incorrect as what's really needed is
9 characters per 32-bit word of cpumask bits (8 hex digits plus the
seperator [','] or the terminating NULL.) This function provides the
caller the means to allocate the correct string length.Cc: Paul Jackson
Signed-off-by: Mike Travis
Signed-off-by: Ingo Molnar -
Signed-off-by: Gregory Haskins
Acked-by: Steven Rostedt
Signed-off-by: Ingo Molnar -
Currently the schedstats implementation does not allow the statistics
to be reset. This patch aims to allow that.echo 0 > cpuacct.usage
resets the usage. Any other value is not allowed and returns -EINVAL.
Signed-off-by: Dhaval Giani
Signed-off-by: Ingo Molnar -
Change the variable names to the common convention for the cpuacct
subsystem.Signed-off-by: Dhaval Giani
Acked-by: Balbir Singh
Signed-off-by: Ingo Molnar -
I noticed this when looking at an openswan issue. Openswan (ab?)uses the
tasklet API to defer processing of packets in some situations, with one
packet per tasklet_action(). I started noticing sequences of
backwards-ordered sequence numbers coming over the wire, since new tasklets
are always queued at the head of the list but processed sequentially.Convert it to instead append new entries to the tail of the list. As an
extra bonus, the splicing code in takeover_tasklets() no longer has to
iterate over the list.Signed-off-by: Olof Johansson
Cc: "David S. Miller"
Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar -
Currently the rt group scheduling does a per cpu runtime limit, however
the rt load balancer makes no guarantees about an equal spread of real-
time tasks, just that at any one time, the highest priority tasks run.Solve this by making the runtime limit a global property by borrowing
excessive runtime from the other cpus once the local limit runs out.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar -
Various SMP balancing algorithms require that the bandwidth period
run in sync.Possible improvements are moving the rt_bandwidth thing into root_domain
and keeping a span per rt_bandwidth which marks throttled cpus.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar -
Signed-off-by: Ingo Molnar
-
Balbir Singh reported:
> 1:mon> t
> [c0000000e7677da0] c000000000067de0 .sys_sched_yield+0x6c/0xbc
> [c0000000e7677e30] c000000000008748 syscall_exit+0x0/0x40
> --- Exception: c01 (System Call) at 00000400001d09e4
> SP (4000664cb10) is in userspace
> 1:mon> r
> cpu 0x1: Vector: 300 (Data Access) at [c0000000e7677aa0]
> pc: c000000000068e50: .yield_task_fair+0x94/0xc4
> lr: c000000000067de0: .sys_sched_yield+0x6c/0xbcthe check that should have avoided that is:
/*
* Are we the only task in the tree?
*/
if (unlikely(rq->load.weight == curr->se.load.weight))
return;But I guess that overlooks rt tasks, they also increase the load.
So I guess something like this ought to fix it..Signed-off-by: Ingo Molnar
-
There is no need to loop any longer when 'same == 0'.
Signed-off-by: Dmitry Adamushko
Signed-off-by: Ingo Molnar -
it's unused.
Signed-off-by: Ingo Molnar
-
Signed-off-by: Ingo Molnar
-
Signed-off-by: Ingo Molnar
-
Signed-off-by: Ingo Molnar
-
turn off sync wakeups by default. They are not needed anymore - the
buddy logic should be smart enough to keep the system from
overscheduling.Signed-off-by: Ingo Molnar
-
The wakeup buddy logic didn't use the same wakeup granularity logic as the
wakeup preemption did, this might cause the ->next buddy to be selected past
the point where we would have preempted had the task been a single running
instance.Signed-off-by: Peter Zijlstra
Signed-off-by: Ingo Molnar -
When using CONFIG_NO_HZ, rq->tick_timestamp is not updated every TICK_NSEC.
We check that the number of skipped ticks matches the clock jump seen in
__update_rq_clock().Signed-off-by: Guillaume Chazarain
Signed-off-by: Ingo Molnar -
kernel/sched.c:506: erreur: implicit declaration of function tick_get_tick_sched
kernel/sched.c:506: erreur: invalid type argument of ->
kernel/sched.c:506: erreur: NOHZ_MODE_INACTIVE undeclared (first use in this function)
kernel/sched.c:506: erreur: (Each undeclared identifier is reported only once
kernel/sched.c:506: erreur: for each function it appears in.)Signed-off-by: Andrew Morton
Signed-off-by: Ingo Molnar -
Alexey Zaytsev reported (and bisected) that the introduction of
cpu_clock() in printk made the timestamps jump back and forth.Make cpu_clock() more reliable while still keeping it fast when it's
called frequently.Signed-off-by: Ingo Molnar
-
re-apply:
| commit e22ecef1d2658ba54ed7d3fdb5d60829fb434c23
| Author: Ingo Molnar
| Date: Fri Mar 14 22:16:08 2008 +0100
|
| sched: fix fair sleepers
|
| Fair sleepers need to scale their latency target down by runqueue
| weight. Otherwise busy systems will gain ever larger sleep bonus.Signed-off-by: Ingo Molnar
19 Apr, 2008
20 commits
-
…s/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
security: fix up documentation for security_module_enable
Security: Introduce security= boot parameter
Audit: Final renamings and cleanup
SELinux: use new audit hooks, remove redundant exports
Audit: internally use the new LSM audit hooks
LSM/Audit: Introduce generic Audit LSM hooks
SELinux: remove redundant exports
Netlink: Use generic LSM hook
Audit: use new LSM hooks instead of SELinux exports
SELinux: setup new inode/ipc getsecid hooks
LSM: Introduce inode_getsecid and ipc_getsecid hooks -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26: (1090 commits)
[NET]: Fix and allocate less memory for ->priv'less netdevices
[IPV6]: Fix dangling references on error in fib6_add().
[NETLABEL]: Fix NULL deref in netlbl_unlabel_staticlist_gen() if ifindex not found
[PKT_SCHED]: Fix datalen check in tcf_simp_init().
[INET]: Uninline the __inet_inherit_port call.
[INET]: Drop the inet_inherit_port() call.
SCTP: Initialize partial_bytes_acked to 0, when all of the data is acked.
[netdrvr] forcedeth: internal simplifications; changelog removal
phylib: factor out get_phy_id from within get_phy_device
PHY: add BCM5464 support to broadcom PHY driver
cxgb3: Fix __must_check warning with dev_dbg.
tc35815: Statistics cleanup
natsemi: fix MMIO for PPC 44x platforms
[TIPC]: Cleanup of TIPC reference table code
[TIPC]: Optimized initialization of TIPC reference table
[TIPC]: Remove inlining of reference table locking routines
e1000: convert uint16_t style integers to u16
ixgb: convert uint16_t style integers to u16
sb1000.c: make const arrays static
sb1000.c: stop inlining largish static functions
... -
security_module_enable() can only be called during kernel init.
Signed-off-by: James Morris
-
Add the security= boot parameter. This is done to avoid LSM
registration clashes in case of more than one bult-in module.User can choose a security module to enable at boot. If no
security= boot parameter is specified, only the first LSM
asking for registration will be loaded. An invalid security
module name will be treated as if no module has been chosen.LSM modules must check now if they are allowed to register
by calling security_module_enable(ops) first. Modify SELinux
and SMACK to do so.Do not let SMACK register smackfs if it was not chosen on
boot. Smackfs assumes that smack hooks are registered and
the initial task security setup (swapper->security) is done.Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris -
Rename the se_str and se_rule audit fields elements to
lsm_str and lsm_rule to avoid confusion.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris -
Setup the new Audit LSM hooks for SELinux.
Remove the now redundant exported SELinux Audit interface.Audit: Export 'audit_krule' and 'audit_field' to the public
since their internals are needed by the implementation of the
new LSM hook 'audit_rule_known'.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris -
Convert Audit to use the new LSM Audit hooks instead of
the exported SELinux interface.Basically, use:
security_audit_rule_init
secuirty_audit_rule_free
security_audit_rule_known
security_audit_rule_matchinstad of (respectively) :
selinux_audit_rule_init
selinux_audit_rule_free
audit_rule_has_selinux
selinux_audit_rule_matchSigned-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris -
Introduce a generic Audit interface for security modules
by adding the following new LSM hooks:audit_rule_init(field, op, rulestr, lsmrule)
audit_rule_known(krule)
audit_rule_match(secid, field, op, rule, actx)
audit_rule_free(rule)Those hooks are only available if CONFIG_AUDIT is enabled.
Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Reviewed-by: Paul Moore -
Remove the following exported SELinux interfaces:
selinux_get_inode_sid(inode, sid)
selinux_get_ipc_sid(ipcp, sid)
selinux_get_task_sid(tsk, sid)
selinux_sid_to_string(sid, ctx, len)They can be substitued with the following generic equivalents
respectively:
new LSM hook, inode_getsecid(inode, secid)
new LSM hook, ipc_getsecid*(ipcp, secid)
LSM hook, task_getsecid(tsk, secid)
LSM hook, sid_to_secctx(sid, ctx, len)Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Reviewed-by: Paul Moore -
Don't use SELinux exported selinux_get_task_sid symbol.
Use the generic LSM equivalent instead.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Acked-by: David S. Miller
Reviewed-by: Paul Moore -
Stop using the following exported SELinux interfaces:
selinux_get_inode_sid(inode, sid)
selinux_get_ipc_sid(ipcp, sid)
selinux_get_task_sid(tsk, sid)
selinux_sid_to_string(sid, ctx, len)
kfree(ctx)and use following generic LSM equivalents respectively:
security_inode_getsecid(inode, secid)
security_ipc_getsecid*(ipcp, secid)
security_task_getsecid(tsk, secid)
security_sid_to_secctx(sid, ctx, len)
security_release_secctx(ctx, len)Call security_release_secctx only if security_secid_to_secctx
succeeded.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Reviewed-by: Paul Moore -
Setup the new inode_getsecid and ipc_getsecid() LSM hooks
for SELinux.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Reviewed-by: Paul Moore -
Introduce inode_getsecid(inode, secid) and ipc_getsecid(ipcp, secid)
LSM hooks. These hooks will be used instead of similar exported
SELinux interfaces.Let {inode,ipc,task}_getsecid hooks set the secid to 0 by default
if CONFIG_SECURITY is not defined or if the hook is set to
NULL (dummy). This is done to notify the caller that no valid
secid exists.Signed-off-by: Casey Schaufler
Signed-off-by: Ahmed S. Darwish
Acked-by: James Morris
Reviewed-by: Paul Moore -
This patch effectively reverts commit d0498d9ae1a5cebac363e38907266d5cd2eedf89
aka "[NET]: Do not allocate unneeded memory for dev->priv alignment."
It was found to be buggy because of final unconditional += NETDEV_ALIGN_CONST
removal.For example, for sizeof(struct net_device) being 2048 bytes, "alloc_size"
was also 2048 bytes, but allocator with debugging options turned on started
giving out !32-byte aligned memory resulting in redzones overwrites.Patch does small optimization in ->priv'less case: bumping size to next
32-byte boundary was always done to ensure ->priv will also be aligned.
But, no ->priv, no need to do that.Signed-off-by: Alexey Dobriyan
Signed-off-by: David S. Miller -
do not return a -EINVAL when mmap()-ing PCI holes.
Signed-off-by: Ingo Molnar
Acked-by: Venkatesh Pallipadi
Acked-by: Suresh Siddha
Acked-by: H. Peter Anvin
Acked-by: Thomas Gleixner
Acked-by: Arjan van de Ven -
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (137 commits)
[SCSI] iscsi: bidi support for iscsi_tcp
[SCSI] iscsi: bidi support at the generic libiscsi level
[SCSI] iscsi: extended cdb support
[SCSI] zfcp: Fix error handling for blocked unit for send FCP command
[SCSI] zfcp: Remove zfcp_erp_wait from slave destory handler to fix deadlock
[SCSI] zfcp: fix 31 bit compile warnings
[SCSI] bsg: no need to set BSG_F_BLOCK bit in bsg_complete_all_commands
[SCSI] bsg: remove minor in struct bsg_device
[SCSI] bsg: use better helper list functions
[SCSI] bsg: replace kobject_get with blk_get_queue
[SCSI] bsg: takes a ref to struct device in fops->open
[SCSI] qla1280: remove version check
[SCSI] libsas: fix endianness bug in sas_ata
[SCSI] zfcp: fix compiler warning caused by poking inside new semaphore (linux-next)
[SCSI] aacraid: Do not describe check_reset parameter with its value
[SCSI] aacraid: Fix down_interruptible() to check the return value
[SCSI] sun3_scsi_vme: add MODULE_LICENSE
[SCSI] st: rename flush_write_buffer()
[SCSI] tgt: use KMEM_CACHE macro
[SCSI] initio: fix big endian problems for auto request sense
... -
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (43 commits)
firewire: cleanups
firewire: fix synchronization of gap counts
firewire: wait until PHY configuration packet was transmitted (fix bus reset loop)
firewire: remove unused struct member
firewire: use bitwise and to get reg in handle_registers
firewire: replace more hex values with defined csr constants
firewire: reread config ROM when device reset the bus
firewire: replace static ROM cache by allocated cache
firewire: fw-ohci: work around generation bug in TI controllers (fix AV/C and more)
firewire: fw-ohci: extend logging of bus generations and node ID
firewire: fw-ohci: conditionally log busReset interrupts
firewire: fw-ohci: don't append to AT context when it's not active
firewire: fw-ohci: log regAccessFail events
firewire: fw-ohci: make sure HCControl register LPS bit is set
firewire: fw-ohci: missing PPC PMac feature calls in failure path
firewire: fw-ohci: untangle a mixed unsigned/signed expression
firewire: debug interrupt events
firewire: fw-ohci: catch self_id_count == 0
firewire: fw-ohci: add self ID error check
firewire: fw-ohci: refactor probe, remove, suspend, resume
... -
The kernel now panics reliably on boot if you have a SATAPI device
connected.The problem was introduced by the libata merge trying to pull out all
the SFF code into a separate module. Unfortunately, if you're a satapi
device you usually need to call atapi_request_sense, which has a bare
invocation of a SFF callback which is NULL on non-SFF HBAs. Fix this by
making the call conditional.Signed-off-by: James Bottomley
Signed-off-by: Linus Torvalds -
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mfasheh/ocfs2: (64 commits)
ocfs2/net: Add debug interface to o2net
ocfs2: Only build ocfs2/dlm with the o2cb stack module
ocfs2/cluster: Get rid of arguments to the timeout routines
ocfs2: Put tree in MAINTAINERS
ocfs2: Use BUG_ON
ocfs2: Convert ocfs2 over to unlocked_ioctl
ocfs2: Improve rename locking
fs/ocfs2/aops.c: test for IS_ERR rather than 0
ocfs2: Add inode stealing for ocfs2_reserve_new_inode
ocfs2: Add ac_alloc_slot in ocfs2_alloc_context
ocfs2: Add a new parameter for ocfs2_reserve_suballoc_bits
ocfs2: Enable cross extent block merge.
ocfs2: Add support for cross extent block
ocfs2: Move /sys/o2cb to /sys/fs/o2cb
sysfs: Allow removal of symlinks in the sysfs root
ocfs2: Reconnect after idle time out.
ocfs2/dlm: Cleanup lockres print
ocfs2/dlm: Fix lockname in lockres print function
ocfs2/dlm: Move dlm_print_one_mle() from dlmmaster.c to dlmdebug.c
ocfs2/dlm: Dumps the purgelist into a debugfs file
... -
* git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-2.6-nmw: (49 commits)
[GFS2] fix assertion in log_refund()
[GFS2] fix GFP_KERNEL misuses
[GFS2] test for IS_ERR rather than 0
[GFS2] Invalidate cache at correct point
[GFS2] fs/gfs2/recovery.c: suppress warnings
[GFS2] Faster gfs2_bitfit algorithm
[GFS2] Streamline quota lock/check for no-quota case
[GFS2] Remove drop of module ref where not needed
[GFS2] gfs2_adjust_quota has broken unstuffing code
[GFS2] possible null pointer dereference fixup
[GFS2] Need to ensure that sector_t is 64bits for GFS2
[GFS2] re-support special inode
[GFS2] remove gfs2_dev_iops
[GFS2] fix file_system_type leak on gfs2meta mount
[GFS2] Allow bmap to allocate extents
[GFS2] Fix a page lock / glock deadlock
[GFS2] proper extern for gfs2/locking/dlm/mount.c:gdlm_ops
[GFS2] gfs2/ops_file.c should #include "ops_inode.h"
[GFS2] be*_add_cpu conversion
[GFS2] Fix bug where we called drop_bh incorrectly
...
