- 20 4月, 2008 26 次提交
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由 Mike Travis 提交于
* Change fixed size arrays to per_cpu variables or dynamically allocated arrays in sched_init() and sched_init_smp(). (1) static struct sched_entity *init_sched_entity_p[NR_CPUS]; (1) static struct cfs_rq *init_cfs_rq_p[NR_CPUS]; (1) static struct sched_rt_entity *init_sched_rt_entity_p[NR_CPUS]; (1) static struct rt_rq *init_rt_rq_p[NR_CPUS]; static struct sched_group **sched_group_nodes_bycpu[NR_CPUS]; (1) - these arrays are allocated via alloc_bootmem_low() * Change sched_domain_debug_one() to use cpulist_scnprintf instead of cpumask_scnprintf. This reduces the output buffer required and improves readability when large NR_CPU count machines arrive. * In sched_create_group() we allocate new arrays based on nr_cpu_ids. Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
* Replace usages of CPU_MASK_NONE, CPU_MASK_ALL, NODE_MASK_NONE, NODE_MASK_ALL to reduce stack requirements for large NR_CPUS and MAXNODES counts. * In some cases, the cpumask variable was initialized but then overwritten with another value. This is the case for changes like this: - cpumask_t oldmask = CPU_MASK_ALL; + cpumask_t oldmask; Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
* Move large array "struct bootnode nodes" from stack to _initdata section to reduce amount of stack space required. Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
Create a simple macro to always return a pointer to the node_to_cpumask(node) value. This relies on compiler optimization to remove the extra indirection: #define node_to_cpumask_ptr(v, node) \ cpumask_t _##v = node_to_cpumask(node), *v = &_##v For those systems with a large cpumask size, then a true pointer to the array element can be used: #define node_to_cpumask_ptr(v, node) \ cpumask_t *v = &(node_to_cpumask_map[node]) A node_to_cpumask_ptr_next() macro is provided to access another node_to_cpumask value. The other change is to always include asm-generic/topology.h moving the ifdef CONFIG_NUMA to this same file. Note: there are no references to either of these new macros in this patch, only the definition. Based on 2.6.25-rc5-mm1 # alpha Cc: Richard Henderson <rth@twiddle.net> # fujitsu Cc: David Howells <dhowells@redhat.com> # ia64 Cc: Tony Luck <tony.luck@intel.com> # powerpc Cc: Paul Mackerras <paulus@samba.org> Cc: Anton Blanchard <anton@samba.org> # sparc Cc: David S. Miller <davem@davemloft.net> Cc: William L. Irwin <wli@holomorphy.com> # x86 Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
Change the following arrays sized by NR_CPUS to be PERCPU variables: static struct op_msrs cpu_msrs[NR_CPUS]; static unsigned long saved_lvtpc[NR_CPUS]; Also some minor complaints from checkpatch.pl fixed. Based on: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86.git All changes were transparent except for: static void nmi_shutdown(void) { + struct op_msrs *msrs = &__get_cpu_var(cpu_msrs); nmi_enabled = 0; on_each_cpu(nmi_cpu_shutdown, NULL, 0, 1); unregister_die_notifier(&profile_exceptions_nb); - model->shutdown(cpu_msrs); + model->shutdown(msrs); free_msrs(); } The existing code passed a reference to cpu 0's instance of struct op_msrs to model->shutdown, whilst the other functions are passed a reference to <this cpu's> instance of a struct op_msrs. This seemed to be a bug to me even though as long as cpu 0 and <this cpu> are of the same type it would have the same effect...? Cc: Philippe Elie <phil.el@wanadoo.fr> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
* Change the following static arrays sized by NR_CPUS to per_cpu data variables: _cpuid4_info *cpuid4_info[NR_CPUS]; _index_kobject *index_kobject[NR_CPUS]; kobject * cache_kobject[NR_CPUS]; * Remove the local NR_CPUS array with a kmalloc'd region in show_shared_cpu_map(). Also some minor complaints from checkpatch.pl fixed. Cc: H. Peter Anvin <hpa@zytor.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Mike Travis 提交于
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 <pj@sgi.com> Signed-off-by: NMike Travis <travis@sgi.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Gregory Haskins 提交于
Signed-off-by: NGregory Haskins <ghaskins@novell.com> Acked-by: NSteven Rostedt <srostedt@redhat.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Dhaval Giani 提交于
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: NDhaval Giani <dhaval@linux.vnet.ibm.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Dhaval Giani 提交于
Change the variable names to the common convention for the cpuacct subsystem. Signed-off-by: NDhaval Giani <dhaval@linux.vnet.ibm.com> Acked-by: NBalbir Singh <balbir@linux.vnet.ibm.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Olof Johansson 提交于
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: NOlof Johansson <olof@lixom.net> Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
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: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
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: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
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/0xbc the 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: NIngo Molnar <mingo@elte.hu>
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由 Dmitry Adamushko 提交于
There is no need to loop any longer when 'same == 0'. Signed-off-by: NDmitry Adamushko <dmitry.adamushko@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
it's unused. Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
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: NIngo Molnar <mingo@elte.hu>
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由 Peter Zijlstra 提交于
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: NPeter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Guillaume Chazarain 提交于
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: NGuillaume Chazarain <guichaz@yahoo.fr> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Reynes Philippe 提交于
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: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
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: NIngo Molnar <mingo@elte.hu>
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由 Ingo Molnar 提交于
re-apply: | commit e22ecef1 | Author: Ingo Molnar <mingo@elte.hu> | 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: NIngo Molnar <mingo@elte.hu>
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- 19 4月, 2008 14 次提交
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由 Linus Torvalds 提交于
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/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
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git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.26由 Linus Torvalds 提交于
* 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 ...
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由 James Morris 提交于
security_module_enable() can only be called during kernel init. Signed-off-by: NJames Morris <jmorris@namei.org>
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由 Ahmed S. Darwish 提交于
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: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org>
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由 Ahmed S. Darwish 提交于
Rename the se_str and se_rule audit fields elements to lsm_str and lsm_rule to avoid confusion. Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org>
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由 Ahmed S. Darwish 提交于
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: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org>
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由 Ahmed S. Darwish 提交于
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_match instad of (respectively) : selinux_audit_rule_init selinux_audit_rule_free audit_rule_has_selinux selinux_audit_rule_match Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org>
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由 Ahmed S. Darwish 提交于
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: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Ahmed S. Darwish 提交于
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: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Ahmed S. Darwish 提交于
Don't use SELinux exported selinux_get_task_sid symbol. Use the generic LSM equivalent instead. Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Acked-by: NDavid S. Miller <davem@davemloft.net> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Ahmed S. Darwish 提交于
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: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Ahmed S. Darwish 提交于
Setup the new inode_getsecid and ipc_getsecid() LSM hooks for SELinux. Signed-off-by: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Ahmed S. Darwish 提交于
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: NCasey Schaufler <casey@schaufler-ca.com> Signed-off-by: NAhmed S. Darwish <darwish.07@gmail.com> Acked-by: NJames Morris <jmorris@namei.org> Reviewed-by: NPaul Moore <paul.moore@hp.com>
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由 Alexey Dobriyan 提交于
This patch effectively reverts commit d0498d9a 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: NAlexey Dobriyan <adobriyan@sw.ru> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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