Kyle Evans [Mon, 19 Feb 2018 15:49:27 +0000 (15:49 +0000)]
stand/lua: Remove some unused local declarations
Menus are actually defined as entries in the 'menu' table. These local
declarations have not been used in the history of our in-tree lua scripts,
so give them the boot.
Nathan Whitehorn [Mon, 19 Feb 2018 15:49:14 +0000 (15:49 +0000)]
Set internal error returns for OF_peer(), OF_child(), and OF_parent() to
zero, matching the IEEE 1275 standard. Since these internal error paths
have never, to my knowledge, been taken, behavior is unchanged.
Kyle Evans [Mon, 19 Feb 2018 14:21:56 +0000 (14:21 +0000)]
stand/lua: Defer kernel/module loading until boot or menu escape
Loading the kernel and modules can be really slow. Loading before the menu
draws and every time one changes kernel/boot environment is even more
painful.
Defer loading until we either boot, auto-boot, or escape to loader prompt.
We still need to deal with configuration changes as the boot environment
changes, but this is generally much quicker.
This commit strips all ELF loading out of config.load/config.reload so that
these are purely for configuration. config.loadelf has been created to deal
with kernel/module loads. Unloading logic has been ripped out, as we won't
need to deal with it in the menu anymore.
Andriy Gapon [Mon, 19 Feb 2018 08:55:22 +0000 (08:55 +0000)]
relax an assert in zfsctl_snapdir_lookup to match r323578
Since r323578 we may remove the last reference to a covered vnode with
vrele() instead of vput(). So, v_usecount may be decremented before
the vnode is locked and zfsctl_snapdir_lookup may "catch" the vnode
with v_usecount of zero and v_holdcnt of one.
Kyle Evans [Mon, 19 Feb 2018 03:59:26 +0000 (03:59 +0000)]
stand/lua: reload previously loaded kernel at config-load/reload
r329550 introduced config.kernel_loaded. config.load() doesn't provide a
means of overriding the kernel to load, but that likely isn't necessary as
it will not be a common case. When loading the kernel, just attempt to load
the kernel previously loaded and specified in config.kernel_loaded.
If we haven't loaded a kernel yet, config.kernel_loaded will be unset/nil
and the "default"/first kernel found will be loaded. If we've loaded a
kernel, we'll try to load that same kernel again and fallback to the default
kernel if we need to.
This in also in support of upcoming boot environment support.
Kyle Evans [Mon, 19 Feb 2018 03:52:02 +0000 (03:52 +0000)]
stand/lua: Store the loaded kernel as config.kernel_loaded
'nil' means the 'first kernel found in module_path', which is the same
interpretation as passing 'nil' to loadkernel.
Otherwise, it denotes the name of a kernel that we've successfully loaded.
When reloaded later, we will still need to do the full search again to
locate the actual kernel in case things have changed, so just the name is
good enough.
This is in support of upcoming boot environment support. vfs.root.mountfrom
and currdev will be changed, then we will reload configuration and attempt
to reload the currently chosen kernel unless we shouldn't.
Kyle Evans [Mon, 19 Feb 2018 02:09:10 +0000 (02:09 +0000)]
stand/lua: Clear the screen before prompting for passwords
In the worst case scenario, we have no passwords to prompt for and we end up
just clearing the screen twice before we draw the menu or proceed with boot.
In the best case scenario, we don't try drawing password prompts amidst a
bunch of kernel/module loading.
Kyle Evans [Mon, 19 Feb 2018 01:25:52 +0000 (01:25 +0000)]
Create style.lua(9)
This covers the lua style guidelines we've generally agreed on so far. It
will be revised as work continues and we run into more scenarios that need
specified.
Mateusz Guzik [Mon, 19 Feb 2018 00:54:08 +0000 (00:54 +0000)]
Fix process exit vs reap race introduced in r329449
The race manifested itself mostly in terms of crashes with "spin lock
held too long".
Relevant parts of respective code paths:
exit: reap:
PROC_LOCK(p);
PROC_SLOCK(p);
p->p_state == PRS_ZOMBIE
PROC_UNLOCK(p);
PROC_LOCK(p);
/* exit work */
if (p->p_state == PRS_ZOMBIE) /* true */
proc_reap()
free proc
/* more exit work */
PROC_SUNLOCK(p);
Thus a still exiting process is reaped.
Prior to the change the zombie check was followed by slock/sunlock trip
which prevented the problem.
Even code prior to this commit has a bug: the proc is still accessed for
statistic collection purposes. However, the severity is rather small and
the bug may be fixed in a future commit.
Mateusz Guzik [Mon, 19 Feb 2018 00:38:14 +0000 (00:38 +0000)]
mtx: add mtx_spin_wait_unlocked
The primitive can be used to wait for the lock to be released. Intended
usage is for locks in structures which are about to be freed.
The benefit is the avoided interrupt enable/disable trip + atomic op to
grab the lock and shorter wait if the lock is held (since there is no
worry someone will contend on the lock, re-reads can be more aggressive).
Warner Losh [Sun, 18 Feb 2018 23:16:16 +0000 (23:16 +0000)]
Print more info for -v runs and temp hack for usb vs uhub
Despite best efforts to regularize, there's a few tables in the system
that still report they are for bus usb when they are really for bus
uhub (where usb devices attach). Add a temporary workaround for this
until these places have been eliminated (likely my fault).
Second, when running verbose, describe what we're doing when
searching. This output can be quite long, but says exactly what's
going on (this output is to stdout, so it's useless for scripting).
Ian Lepore [Sun, 18 Feb 2018 23:08:43 +0000 (23:08 +0000)]
Provide a public function to acquire a gpio pin by giving the property name
and index. A private function to do exactly that already existed, so this
renames gpio_pin_get_by_ofw_impl() to gpio_pin_get_by_ofw_propidx() and
provides a declaration for it in a public header.
Previously there were functions to get a pin by property name (assuming
there would only be one pin defined for the name), or by index (asuming
the property has the standard name "gpios"). It turns out there are
devicetree bindings that describe properties with names other than "gpios"
which can describe multiple pins. Hence the need to retrieve the Nth item
from a named property.
Mateusz Guzik [Sun, 18 Feb 2018 21:07:15 +0000 (21:07 +0000)]
exit: get rid of PROC_SLOCK when checking a process to report, take #2
The suspension counter needs synchronisation through slock, but we don't
need it to check if inspecting the counter is necessary to begin with.
In the common case it is not, thus avoid the lock if possible.
Ian Lepore [Sun, 18 Feb 2018 20:08:35 +0000 (20:08 +0000)]
Give the imx_i2c driver its own name, set up its relationship to ofw_iicbus.
Previously it called itself 'iichb' to link up with the EARLY_DRIVER_MODULE
declaration in ofw_iicbus.c.
Ian Lepore [Sun, 18 Feb 2018 19:33:28 +0000 (19:33 +0000)]
Allow i2c hardware drivers to declare their own relationships to ofw_iicbus
rather than relying on a set of canned EARLY_DRIVER_MODULE() statements in
the ofw_iicbus source. This means hw drivers will no longer be required to
use one of a few predefined driver names. They will also now be able to
decide themselves if they want to use DRIVER_MODULE or EARLY_DRIVER_MODULE
and to set which pass to attach on for early modules.
Mainly, this adds extern declarations for the driver and devclass variables.
It also renames ofwiicbus_devclass to ofw_iicbus_devclass to be consistant
with the way we use ofw_ prefixes on this stuff.
Mark Johnston [Sun, 18 Feb 2018 16:03:50 +0000 (16:03 +0000)]
Don't include DMAR map entry zone items in kernel dumps.
Such items may be allocated in the I/O path used by the dumper,
potentially causing the dump to fail. Since there is some precedent
in the DMAR driver for avoiding this problem using _NODUMP, apply
this workaround to the zone as well.
Emmanuel Vadot [Sun, 18 Feb 2018 11:17:39 +0000 (11:17 +0000)]
efi: Do not pad the efi devpath structure
This solve problem when booting with efi on armv7
Reviewed by: imp, tsoome
MFC after: 2 weeks
Differential Revision: https://reviews.freebsd.org/D14415
Update the ktime type in the LinuxKPI to be a signed 64-bit integer similarly
to Linux, to avoid compilation issues. Implement ktime_get_real_seconds().
https://www.illumos.org/issues/8081
zdb(8) is full of minor problems that generate compiler warnings. On FreeBSD,
which uses -WError, the only way to build it is to disable all compiler
warnings. This makes it much harder to detect newly introduced bugs. We should
cleanup all the warnings.
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Reviewed by: Prakash Surya <prakash.surya@delphix.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Author: Alan Somers <asomers@gmail.com>
Ian Lepore [Sun, 18 Feb 2018 02:48:54 +0000 (02:48 +0000)]
Build modules specific to imx5/imx6 only when building those kernels.
This adds sys/modules/imx with a SUBDIR makefile to make the whole
collection of modules that are specific to these SoCs. Initially, that
"whole collection" consists of the if_ffec and imx_i2c drivers.
The if_ffec driver is referenced in its existing home in ../ffec rather
than moving it into the imx directory, because it's used by powerpc too,
but it is no longer built for all armv6/7 systems.
https://www.illumos.org/issues/8502
The code in lib/libzfs/common/libzfs_mount.c already basically handles
the case when libshare is not installed. We just need to not fail in
zfs_init_libshare_impl. I tested this in lx and things work as
expected. I also tested there trying to set sharenfs and sharesmb on
the delegated dataset. Neither is allowed from within a zone. The
spew of msgs from a native zone is not ZFS specific. I see the same
spew simply running the share command.
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Yuri Pankov <yuripv@gmx.com>
Approved by: Richard Lowe <richlowe@richlowe.net>
Author: Jerry Jelinek <jerry.jelinek@joyent.com>
Kyle Evans [Sun, 18 Feb 2018 01:35:46 +0000 (01:35 +0000)]
stand/lua: More style nits, config.lua
Some other points I think we need to be consistent on:
- Spacing around string concatenation (always)
- Test against 'nil' explicitly rather than relying on 'not' for things that
reasonably won't be returning a boolean. e.g. loader.getenv
Eventually this will all get formalized somewhere.
Conrad Meyer [Sun, 18 Feb 2018 01:15:25 +0000 (01:15 +0000)]
Lua loader: Add barebones "lfs" module
Add a Lua FileSystem module, an emulation of a subset of the permissively
licensed (MIT) Lua library of the same name[0], to our loader's Lua
environment.
Kyle Evans [Sun, 18 Feb 2018 00:56:12 +0000 (00:56 +0000)]
stand/lua: Fix module_path handling with multiple kernels
Once we've successfully loaded a kernel, we add its directory to
module_path. If we switch kernels with the kernel selector, we again prepend
the kernel directory to the current module_path and end up with multiple
kernel paths, potentially with mismatched kernel/modules, added to
module_path.
Fix it by caching module_path at load() time and using the cached version
whenever we load a new kernel.
Ian Lepore [Sun, 18 Feb 2018 00:02:09 +0000 (00:02 +0000)]
Fix fallout from the import of fresh dts source files from linux 4.15. It
appears that node names no longer include leading zeroes in the @address
qualifiers, so we have to search for the nodes involved in interrupt fixup
using both flavors of name to be compatible with old and new .dtb files.
(You know you're in a bad place when you're applying a workaround to code
that exists only as a workaround for another problem.)
Ian Lepore [Sat, 17 Feb 2018 23:39:10 +0000 (23:39 +0000)]
Don't call sdhci_cleanup_slot() if sdhci_init_slot() never got called.
Also, do callout_init() very early in attach, so that callout_drain()
can be called in detach without worrying about whether it ever got init'd.
Ian Lepore [Sat, 17 Feb 2018 23:23:27 +0000 (23:23 +0000)]
Do not try to deallocate memory that wasn't allocated (you'd think that
would be safe, but the function also tries to destroy mutexes that never
got created).
I guess this can only happen when imx_ehci_detach() is called on the
error-exit path from imx_ehci_attach(), and that path never got exercised
before today.
Add support for printk_ratelimit() function macro and improve the existing
printk_ratelimited() function macro to return a boolean stating if there
was a printout, true, or not, false.
Add checks for valid IRQ tag before setting up or tearing down an interrupt
handler in the LinuxKPI. This is needed when the interrupt handler is disabled
before freeing the interrupt.
Multiple drivers can match on the same USB device and the order of loading
decides which driver gets the device. Use the supplied mask value as an
indication of priority, so that vendor specific device drivers are loaded
before more generic ones.
Invoke devmatch rc.d script directly instead of depending on "service"
which is installed in usr/sbin and might not be available at the time
devd is started.
Mariusz Zaborski [Sat, 17 Feb 2018 12:22:29 +0000 (12:22 +0000)]
Introduce channel flags in libcasper.
Instead of passing flags (which describe a type of nvlist)
every send/recv we remember them in channel.
It's enough for use to extract them only during unwrap.
This simplify use of Casper.
Mateusz Guzik [Sat, 17 Feb 2018 12:07:09 +0000 (12:07 +0000)]
Undo LOCK_PROFILING pessimisation after r313454 and r313455
With the option used to compile the kernel both sx and rw shared ops would
always go to the slow path which added avoidable overhead even when the
facility is disabled.
Furthermore the increased time spent doing uncontested shared lock acquire
would be bogusly added to total wait time, somewhat skewing the results.
Restore old behaviour of going there only when profiling is enabled.
This change is a no-op for kernels without LOCK_PROFILING (which is the
default).
Warner Losh [Sat, 17 Feb 2018 06:57:43 +0000 (06:57 +0000)]
Implement --hints to read hints file directly
In testing, it's often useful to copy a few files into a directory and
kldxref them to ensure that particular cases are handled correctly.
Add --hints (-h) to facilitate this testing and enable future
automated testing.
Warner Losh [Sat, 17 Feb 2018 06:57:38 +0000 (06:57 +0000)]
Pass in the NOMATCH event to devmatch
In devd/devmatch.conf, we need to pass the event to the devmatch
serivce. It gets passed to devmatch -p for matching. We always pass
this, unlike hps' original patch, so we kill two birds with one stone
and only match modules to the event passed in.
Warner Losh [Sat, 17 Feb 2018 06:57:30 +0000 (06:57 +0000)]
Tweak the 'I' flagged value
'I' was omitting 'zero' values. This is not quite correct, and was put
in as a hack but not documented. Remove it. If we find what the hack
was really needed for, we'll either fix the need for it, or invent a
new flagged value type.
Warner Losh [Sat, 17 Feb 2018 06:57:25 +0000 (06:57 +0000)]
Implement 'T' field matching.
Implement 'T' field matching. This is needed to prevent false
positives. However, it's not general enough. It only handles one field
and there's a ton of edge cases even with that it likely wouldn't
handle. To do it more generally and also eliminate a lot of the
hackiness that's in this program now, we'd need to creating
directories for lookups ala awk, pearl, python, etc. It appears to be
sufficient, though, to get my keyboard loaded on boot.
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