In ddb(4) print mbuf chain and packet list.

For debugging hardware offloading, DMA requirements, bounce buffers,
and performance optimizations, knowing the memory layout of mbuf
content helps.
Imple

In ddb(4) print mbuf chain and packet list.

For debugging hardware offloading, DMA requirements, bounce buffers,
and performance optimizations, knowing the memory layout of mbuf
content helps.
Implement /c and /p modifiers in ddb show mbuf. It traverses the
pointer m_next for mbuf chain or m_nextpkt for packet list. Show
mbuf type, data offset, mbuf length, packet length, cluster size,
and total number of elements, length and size.

OK claudio@ mvs@

show more ...

Remove Softdep.

Softdep has been a no-op for some time now, this removes it to get
it out of the way.

Flensing mostly done in Talinn, with some help from krw@

ok deraadt@

all platforms, kernel: remove __HAVE_CLOCKINTR symbol

Every platform made the clockintr switch at least six months ago.
The __HAVE_CLOCKINTR symbol is now redundant. Remove it.

Prompted by claudio

all platforms, kernel: remove __HAVE_CLOCKINTR symbol

Every platform made the clockintr switch at least six months ago.
The __HAVE_CLOCKINTR symbol is now redundant. Remove it.

Prompted by claudio@.

Link: https://marc.info/?l=openbsd-tech&m=168826181015032&w=2

"makes sense" mlarkin@

show more ...

clockintr(9): initial commit

clockintr(9) is a machine-independent clock interrupt scheduler. It
emulates most of what the machine-dependent clock interrupt code is
doing on every platform. Every

clockintr(9): initial commit

clockintr(9) is a machine-independent clock interrupt scheduler. It
emulates most of what the machine-dependent clock interrupt code is
doing on every platform. Every CPU has a work schedule based on the
system uptime clock. For now, every CPU has a hardclock(9) and a
statclock(). If schedhz is set, every CPU has a schedclock(), too.

This commit only contains the MI pieces. All code is conditionally
compiled with __HAVE_CLOCKINTR. This commit changes no behavior yet.

At a high level, clockintr(9) is configured and used as follows:

1. During boot, the primary CPU calls clockintr_init(9). Global state
is initialized.
2. Primary CPU calls clockintr_cpu_init(9). Local, per-CPU state is
initialized. An "intrclock" struct may be installed, too.
3. Secondary CPUs call clockintr_cpu_init(9) to initialize their
local state.
4. All CPUs repeatedly call clockintr_dispatch(9) from the MD clock
interrupt handler. The CPUs complete work and rearm their local
interrupt clock, if any, during the dispatch.
5. Repeat step (4) until the system shuts down, suspends, or hibernates.
6. During resume, the primary CPU calls inittodr(9) and advances the
system uptime.
7. Go to step (2). This time around, clockintr_cpu_init(9) also
advances the work schedule on the calling CPU to skip events that
expired during suspend. This prevents a "thundering herd" of
useless work during the first clock interrupt.

In the long term, we need an MI clock interrupt scheduler in order to
(1) provide control over the clock interrupt to MI subsystems like
timeout(9) and dt(4) to improve their accuracy, (2) provide drivers
like acpicpu(4) a means for slowing or stopping the clock interrupt on
idle CPUs to conserve power, and (3) reduce the amount of duplicated
code in the MD clock interrupt code.

Before we can do any of that, though, we need to switch every platform
over to using clockintr(9) and do some cleanup.

Prompted by "the vmm(4) time bug," among other problems, and a
discussion at a2k19 on the subject. Lots of design input from
kettenis@. Early versions reviewed by kettenis@ and mlarkin@.
Platform-specific help and testing from kettenis@, gkoehler@,
mlarkin@, miod@, aoyama@, visa@, and dv@. Babysitting and spiritual
guidance from mlarkin@ and kettenis@.

Link: https://marc.info/?l=openbsd-tech&m=166697497302283&w=2

ok kettenis@ mlarkin@

show more ...

Replace the swap extent(9) usage by a blist data structure.

It makes uvm_swap_free() faster: extents have a cost of O(n*n) which doesn't
really scale with gigabytes of swap.

Based on initial work f

Replace the swap extent(9) usage by a blist data structure.

It makes uvm_swap_free() faster: extents have a cost of O(n*n) which doesn't
really scale with gigabytes of swap.

Based on initial work from mpi@
The blist implementation comes from DragonFlyBSD.

The diff adds also a ddb(4) 'show swap' command to show the blist and help
debugging, and fix some off-by-one in size printed during hibernate.

ok mpi@

show more ...

In the kernel exist functions to print routes, but they were not
accessible from ddb. Implement "show all routes" to print routing
tables, and "show route 0xfffffd807e9b0000" for a single route
entr

In the kernel exist functions to print routes, but they were not
accessible from ddb. Implement "show all routes" to print routing
tables, and "show route 0xfffffd807e9b0000" for a single route
entry. Note that the rtable id is not part of a route entry, so
it makes no sense to print it there.
OK deraadt@

show more ...

db_addr_t -> vaddr_t

ok deraadt@

Substitute boolean_t/TRUE/FALSE by int/1/0.

ok dlg@, jasper@, anton@

New ddb(4) command: kill.

Send an uncatchable SIGABRT to the process specified by the pid
argument. Useful in case of CPU exhaustion to kill the DoSing
process and generate a core for later inspect

New ddb(4) command: kill.

Send an uncatchable SIGABRT to the process specified by the pid
argument. Useful in case of CPU exhaustion to kill the DoSing
process and generate a core for later inspection.

ok phessler@, visa@, kettenis@, miod@

show more ...

Revert previous, it's a documented behavior and people might rely on it.

Pointed by deraadt@

Stop and restart the watchdog timer when entering and leaving ddb(4).

From Christian Ludwig.

add a "show socket" command to ddb

should help inspecting socket issues in the future.

enthusiasm from mpi@ bluhm@ deraadt@

Implement m_print as real ddb command "show mbuf addr" in the way other
such commands are implemented.
"Ja! You'll need to update ddb.4 as well, of course." miod@

dd 'show all bufs' to show all the buffers in the system

ok beck@ thib@

add ddb functions to be able to show all the nfsnodes in the system
and rewrite the nfsreq code to use pool_walk().

OK beck@, blambert@

add a show all vnodes command, use dlg's nice pool_walk() to accomplish
this.

ok beck@, dlg@

Revert bufq's. this is inline with the major midlayer reverts that
have been going on. this appears to bring us back to stable state.

lots of testing by oga and ariane and my self.

add a flexible buffer queue (bufq) api, based on the never used
one by tedu@. It doesn't do anything smart yet, it just uses
plain old disksort. we also keep the old method of queueing bufs
since som

add a flexible buffer queue (bufq) api, based on the never used
one by tedu@. It doesn't do anything smart yet, it just uses
plain old disksort. we also keep the old method of queueing bufs
since some miods have crazy MD drivers that need some love.

ok beck@, art@
tested by many on many archs.

show more ...

Add nfs ddb hooks, for now only to show all the outstanding nfsreq's
and to print out struct nfsreq.

"get it in so people can pound on it" blambert@
OK and information_s_ on the manpage from miod@

fake structs to let kernels compile on architectures that some german
companies do not use. Mickey, why did you break the tree for us like this,
all after not showing the diffs to lots of people? Ar

fake structs to let kernels compile on architectures that some german
companies do not use. Mickey, why did you break the tree for us like this,
all after not showing the diffs to lots of people? Are you that special
that you can get away with this? Do you really want to bet on that, again?

show more ...

add mount/vnode/buf and softdep printing commands; tested on a few archs and will make pedro happy too (;

add show all pools command listing all pools as vmstat -m does; miod@ ok

fix comments

Rename the MD db_stack_trace_cmd to db_stack_trace_print. Add an argument
that specifies which printf funciton it should use. Implement
db_stack_trace_cmd in MI code.

Thanks to miod@ for all the tes

Rename the MD db_stack_trace_cmd to db_stack_trace_print. Add an argument
that specifies which printf funciton it should use. Implement
db_stack_trace_cmd in MI code.

Thanks to miod@ for all the tests.

show more ...

First round of __P removal in sys