kernel: implement clear_caches for riscv64

Change-Id: I28296725ce22b47e94481abf794b92cf4ffd98a5
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6217
Tested-by: Automation <automation@haiku-os.org>
Reviewed-by: Alex von Gluck IV <kallisti5@unixzen.com>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

kernel: Break thread-related AutoLockers into a separate header.

Including thread.h brings a massive array of things with it from
the kernel thread arch headers, team and thread definitions,
hash tables, linked lists, Referenceable, etc. that the vast majority
of AutoLock.h consumers neither want nor need.

So, put these in a separate header, and adjust all consumers of these
lockers to include the new file.

This change exposes the fact that a lot of files were inadvertently
making use of headers included indirectly through thread.h. Those
will be fixed in the next commit.

kernel/scheduler: enable cpu load tracking after boot

when the cpufreq module is loaded, we let the scheduler update its policy.
Improve assert report
CoreEntry::GetLoad() could return more than kMaxLoad.

Change-Id: I127f9b3e8062b5996872aae30b4021b9904fa179
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3216
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

kernel/cpu: add cpu_frequency()

implement on x86 with APERFMPERF.

Change-Id: Ia484854c76dee76c5447983de15800a25d791d39
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3213
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

kernel/cpu: Only root can enable or disable CPUs.

white space cleanup

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.

kernel: Propagate scheduler modes to cpu{freq, idle} modules

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.

boot, kernel: Replace MAX_BOOT_CPUS with SMP_MAX_CPUS

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

cpufreq: Rank modules and choose the best one

kernel: Restore logical processor disabling

kernel: Allow reassigning IRQs to logical processors

kernel: Add support and interface for cpufreq modules

kernel: Update cpu_ent::active_time atomically

kernel: Create CPU topology tree

kernel: Decide whether to use simple or affine scheduler

Simple scheduler is used when we do not have to worry about cache affinity
(i.e. single core with or without SMT, multicore with all cache levels
shared).

When we replace gSchedulerLock with more fine grained locking affine
scheduler should also be chosen when logical CPU count is high (regardless
of cache).

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

*.c -> *.cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34417 a95241bf-73f2-0310-859d-f6bbb57e9c96

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.

kernel: Propagate scheduler modes to cpu{freq, idle} modules

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.

boot, kernel: Replace MAX_BOOT_CPUS with SMP_MAX_CPUS

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

cpufreq: Rank modules and choose the best one

kernel: Restore logical processor disabling

kernel: Allow reassigning IRQs to logical processors

kernel: Add support and interface for cpufreq modules

kernel: Update cpu_ent::active_time atomically

kernel: Create CPU topology tree

kernel: Decide whether to use simple or affine scheduler

Simple scheduler is used when we do not have to worry about cache affinity
(i.e. single core with or without SMT, multicore with all cache levels
shared).

When we replace gSchedulerLock with more fine grained locking affine
scheduler should also be chosen when logical CPU count is high (regardless
of cache).

Merged signals-merge branch into trunk with the following changes:
* Reorganized the kernel locking related to threads and teams.
* We now discriminate correctly between process and thread signals. Signal
handlers have been moved to teams. Fixes #5679.
* Implemented real-time signal support, including signal queuing, SA_SIGINFO
support, sigqueue(), sigwaitinfo(), sigtimedwait(), waitid(), and the addition
of the real-time signal range. Closes #1935 and #2695.
* Gave SIGBUS a separate signal number. Fixes #6704.
* Implemented <time.h> clock and timer support, and fixed/completed alarm() and
[set]itimer(). Closes #5682.
* Implemented support for thread cancellation. Closes #5686.
* Moved send_signal() from <signal.h> to <OS.h>. Fixes #7554.
* Lots over smaller more or less related changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@42116 a95241bf-73f2-0310-859d-f6bbb57e9c96

*.c -> *.cpp


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34417 a95241bf-73f2-0310-859d-f6bbb57e9c96