2012-05-30 20:13:09 +02:00
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/*
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2016-01-11 11:02:52 +01:00
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* \brief Kernel entrypoint for non-SMP systems
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2012-05-30 20:13:09 +02:00
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* \author Martin Stein
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hw: restrict processor broadcast to TLB flushing
Removes the generic processor broadcast function call. By now, that call
was used for cross processor TLB maintance operations only. When core/kernel
gets its memory mapped on demand, and unmapped again, the previous cross
processor flush routine doesn't work anymore, because of a hen-egg problem.
The previous cross processor broadcast is realized using a thread constructed
by core running on top of each processor core. When constructing threads in
core, a dataspace for its thread context is constructed. Each constructed
RAM dataspace gets attached, zeroed out, and detached again. The detach
routine requires a TLB flush operation executed on each processor core.
Instead of executing a thread on each processor core, now a thread waiting
for a global TLB flush is removed from the scheduler queue, and gets attached
to a TLB flush queue of each processor. The processor local queue gets checked
whenever the kernel is entered. The last processor, which executed the TLB
flush, re-attaches the blocked thread to its scheduler queue again.
To ease uo the above described mechanism, a platform thread is now directly
associated with a platform pd object, instead of just associate it with the
kernel pd's id.
Ref #723
2014-04-28 20:36:00 +02:00
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* \author Stefan Kalkowski
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2012-05-30 20:13:09 +02:00
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* \date 2011-10-20
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*/
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/*
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2017-02-20 13:23:52 +01:00
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* Copyright (C) 2011-2017 Genode Labs GmbH
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2012-05-30 20:13:09 +02:00
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*
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* This file is part of the Genode OS framework, which is distributed
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2017-02-20 13:23:52 +01:00
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* under the terms of the GNU Affero General Public License version 3.
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2012-05-30 20:13:09 +02:00
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*/
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/* core includes */
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2015-12-09 12:02:00 +01:00
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#include <kernel/cpu.h>
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2013-12-18 16:18:16 +01:00
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extern "C" void kernel()
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{
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2015-12-09 12:02:00 +01:00
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using namespace Kernel;
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2016-01-11 11:02:52 +01:00
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Cpu * const cpu = cpu_pool()->cpu(Cpu::executing_id());
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2017-10-06 12:02:36 +02:00
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cpu->schedule().proceed(*cpu);
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2012-05-30 20:13:09 +02:00
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}
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2016-01-11 11:02:52 +01:00
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void Kernel::Cpu::Ipi::occurred() { }
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Follow practices suggested by "Effective C++"
The patch adjust the code of the base, base-<kernel>, and os repository.
To adapt existing components to fix violations of the best practices
suggested by "Effective C++" as reported by the -Weffc++ compiler
argument. The changes follow the patterns outlined below:
* A class with virtual functions can no longer publicly inherit base
classed without a vtable. The inherited object may either be moved
to a member variable, or inherited privately. The latter would be
used for classes that inherit 'List::Element' or 'Avl_node'. In order
to enable the 'List' and 'Avl_tree' to access the meta data, the
'List' must become a friend.
* Instead of adding a virtual destructor to abstract base classes,
we inherit the new 'Interface' class, which contains a virtual
destructor. This way, single-line abstract base classes can stay
as compact as they are now. The 'Interface' utility resides in
base/include/util/interface.h.
* With the new warnings enabled, all member variables must be explicitly
initialized. Basic types may be initialized with '='. All other types
are initialized with braces '{ ... }' or as class initializers. If
basic types and non-basic types appear in a row, it is nice to only
use the brace syntax (also for basic types) and align the braces.
* If a class contains pointers as members, it must now also provide a
copy constructor and assignment operator. In the most cases, one
would make them private, effectively disallowing the objects to be
copied. Unfortunately, this warning cannot be fixed be inheriting
our existing 'Noncopyable' class (the compiler fails to detect that
the inheriting class cannot be copied and still gives the error).
For now, we have to manually add declarations for both the copy
constructor and assignment operator as private class members. Those
declarations should be prepended with a comment like this:
/*
* Noncopyable
*/
Thread(Thread const &);
Thread &operator = (Thread const &);
In the future, we should revisit these places and try to replace
the pointers with references. In the presence of at least one
reference member, the compiler would no longer implicitly generate
a copy constructor. So we could remove the manual declaration.
Issue #465
2017-12-21 15:42:15 +01:00
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void Kernel::Cpu::Ipi::trigger(unsigned) { }
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2016-01-11 11:02:52 +01:00
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Kernel::Cpu::Ipi::Ipi(Kernel::Irq::Pool &p) : Kernel::Irq(Kernel::Pic::IPI, p) { }
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