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81e04d7b97
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7670 Commits

Author SHA1 Message Date
Pawel Dziepak
81e04d7b97 kernel: Remove cpu_info::load 
This field forces kernel to track each CPU load all the time. It is not
a problem with the current scheduler on a multicore systems, but on
single core machnies or with any other future scheduler this field may
become just an unnecessary burden. It isn't difficult for an application
to compute CPU load by itself when it needs it.
 2014-01-03 19:44:57 +01:00
Pawel Dziepak
135bb9c959 kernel: Do not attempt to interrupt a thread that is not waiting 2013-12-31 03:53:56 +01:00
Pawel Dziepak
15a7f2046a kernel: Return CPU load in cpu_info 2013-12-29 22:47:06 +01:00
Pawel Dziepak
e46f284adc kernel/util: MinMaxHeap: Fix unused variable warnings 2013-12-29 22:47:05 +01:00
Pawel Dziepak
a47974dd06 scheduler: Use heap to determine highest priority thread 2013-12-29 19:24:01 +01:00
Pawel Dziepak
3309bf33c7 kernel/util: Make MinMaxHeap::Peek*() const 2013-12-23 03:52:13 +01:00
Pawel Dziepak
b89b5d3826 x86: Make arch/smp.h a C++ only header 2013-12-20 22:05:26 +01:00
Pawel Dziepak
ad6b9a1df8 scheduler: Use sequential locks instead of atomic 64 bit access 2013-12-20 02:18:44 +01:00
Pawel Dziepak
b258298c70 kernel: Protect cpu_ent::active_time with sequential lock 
atomic_{get, set}64() are problematic on architectures without 64 bit
compare and swap.
Also, using sequential lock instead of atomic access ensures that
any reads from cpu_ent::active_time won't require any writes to shared
memory.
 2013-12-20 01:31:32 +01:00
Pawel Dziepak
6639514437 x86[_64]: Support assigning MSI IRQs to arbitrary CPU 2013-12-20 01:07:08 +01:00
Pawel Dziepak
e3d001ff02 x86: Implement multicast ICIs 2013-12-19 19:35:44 +01:00
Pawel Dziepak
1b06228f13 kernel: Propagate scheduler modes to cpu{freq, idle} modules 2013-12-17 23:26:37 +01:00
Pawel Dziepak
4fcbac58de kernel: Make get_cpu_topology() return a pointer to const 
The client code is not supposed to change the topology info.
It would be also nice if cpu_topology_node::children was an array of
pointers to const but that would require several const_casts in the
topology tree generation code so it's probably not worth it.
 2013-12-17 22:08:18 +01:00
Pawel Dziepak
735f67481f x86: Debugger can now use dr3 2013-12-17 04:31:29 +01:00
Pawel Dziepak
a5b070f1fa x86: Store pointer to the current thread in gs:0 
Apparently, reading from dr3 is slower than reading from memory
with cache hit.

Also, depending on hypervisor configuration, accessing dr3 may cause
a VM exit (and, at least on kvm, it does), what makes it much slower
than a memory access even when there is a cache miss.
 2013-12-17 04:08:51 +01:00
Pawel Dziepak
611376fef7 x86: Let each CPU have its own GDT 2013-12-17 03:57:20 +01:00
Pawel Dziepak
7b9668170c kernel, boot: Increase CPU limit to 64 2013-12-16 05:00:02 +01:00
Pawel Dziepak
d02aaee17e kernel, libroot: Add more memory info in system_info 
system_info now contains all information previously available only
through __get_system_info_etc(B_MEMORY_INFO, ...).
 2013-12-16 04:53:46 +01:00
Pawel Dziepak
1bc7045fdf kernel, libroot: Introduce new API for obtaining system info 2013-12-16 03:58:43 +01:00
Pawel Dziepak
bcfdf88186 apps, kernel: Remove B_MAX_CPU_COUNT 2013-12-06 21:57:58 +01:00
Pawel Dziepak
fd96cf08a7 libroot: Remove _SC_NPROCESSORS_MAX and _SC_CPUID_MAX 
_SC_NPROCESSORS_MAX and _SC_CPUID_MAX appear to be supported only by
Solaris. There isn't much point in exposing such values to the userland
anyway.
 2013-12-06 21:54:07 +01:00
Pawel Dziepak
3e0e3be760 boot, kernel: Replace MAX_BOOT_CPUS with SMP_MAX_CPUS 2013-12-06 19:43:08 +01:00
Pawel Dziepak
f0fe981769 kernel: Fix gcc2 build 2013-12-06 03:31:20 +01:00
Pawel Dziepak
2b04d8ab31 x86/paging: Use CPUSet instead of cpu_mask_t 2013-12-06 03:27:48 +01:00
Pawel Dziepak
7629d527c5 kernel: Use CPUSet in ICI code instead of cpu_mask_t 2013-12-06 03:08:39 +01:00
Pawel Dziepak
730882d615 kernel: Remove RunQueueLink.h 2013-12-05 23:28:42 +01:00
Pawel Dziepak
52b442a687 kernel: smp_cpu_rendezvous(): Use counter instead of bitmap 2013-12-05 23:10:04 +01:00
Pawel Dziepak
d287274dce scheduler: Code refactoring 2013-12-05 22:47:30 +01:00
Pawel Dziepak
2b7ea4cddf kernel: Remove Thread::next_state 2013-11-29 19:31:10 +01:00
Pawel Dziepak
673f08a995 kernel: Make thread_block_locked() private 2013-11-29 05:30:50 +01:00
Pawel Dziepak
7f8cf14b71 scheduler, kernel/util: Fix style issues 2013-11-29 04:51:38 +01:00
Pawel Dziepak
3514fd77f7 kernel: Reduce lock contention when processing ICIs 2013-11-29 03:36:44 +01:00
Pawel Dziepak
e736a456ba kernel: Forbid implicit casts between spinlock and int32 2013-11-29 03:36:31 +01:00
Pawel Dziepak
286b341a40 kernel: Merge two occurences of thread resume code 2013-11-28 14:03:57 +01:00
Pawel Dziepak
7db89e8dc3 kernel: Rework cpuidle module 
* Create new interface for cpuidle modules (similar to the cpufreq
   interface)
 * Generic cpuidle module is no longer needed
 * Fix and update Intel C-State module
 2013-11-25 23:50:27 +01:00
Pawel Dziepak
0e94a12f8e kernel: Make CACHE_LINE_ALIGN visible in the whole kernel 2013-11-25 00:35:15 +01:00
Pawel Dziepak
1e8ed5558d cpufreq: Rank modules and choose the best one 2013-11-25 00:08:13 +01:00
Pawel Dziepak
03f7d3d1db kernel: Restore logical processor disabling 2013-11-24 22:51:07 +01:00
Pawel Dziepak
a04b7d9f96 power: Remove old cpufreq interface 2013-11-22 05:30:14 +01:00
Pawel Dziepak
14e36af649 kernel[/util]: Fix debug builds 2013-11-21 03:24:54 +01:00
Pawel Dziepak
024541a4c8 kernel: Improve rw_spinlock implementation 
* Add more debug checks
 * Reduce the number of executed instructions that lock the bus.
 2013-11-21 02:25:03 +01:00
Pawel Dziepak
308f594e2a kernel, libroot: Make scheduler modes interface public 2013-11-20 23:32:40 +01:00
Pawel Dziepak
9c2e74da04 scheduler: Move mode specific logic to separate files 2013-11-20 09:46:59 +01:00
Pawel Dziepak
d897a478d7 kernel: Allow reassigning IRQs to logical processors 2013-11-18 04:55:25 +01:00
Pawel Dziepak
955c7edec2 kernel: Measure time spent in interrupt handlers 2013-11-18 01:50:37 +01:00
Pawel Dziepak
6a164daad4 kernel: Track load produced by interrupt handlers 2013-11-18 01:17:44 +01:00
Pawel Dziepak
288a2664a2 scheduler: Remove sSchedulerInternalLock 
* pin idle threads to their specific CPUs
 * allow scheduler to implement SMP_MSG_RESCHEDULE handler
 * scheduler_set_thread_priority() reworked
 * at reschedule: enqueue old thread after dequeueing the new one
 2013-11-13 05:31:58 +01:00
Pawel Dziepak
829f836324 scheduler: Minor cleanup 2013-11-12 04:42:12 +01:00
Pawel Dziepak
7e1c4534df libroot: Add adaptive mutex implementation 2013-11-08 03:37:30 +01:00
Pawel Dziepak
03fb2d8868 kernel: Remove gSchedulerLock 
* Thread::scheduler_lock protects thread state, priority, etc.
 * sThreadCreationLock protects thread creation and removal and list of
   threads in team.
 * Team::signal_lock and Team::time_lock protect list of threads in team
   as well.
 * Scheduler uses its own internal locking.
 2013-11-08 02:41:26 +01:00