mcoverlayfs has a high maintenance burden and does not work on rhel8's 4.18
kernel (while it works on vanilla 4.18...); instead of debugging this further
time is better spent making it independent from overlayfs.
Change-Id: I7454ae95b0fbb3373c256aa2fd83cdfec466c009
The previous commit made BUILDID use git for submodule, but for complex
git setup (e.g. worktree) and older git version or dead .git 'link' it
would blindly rely on the existence of the .git file even if git does not
actually find anything.
This would lead to possibly empty BUILDID which would fail building.
Just always run the git command, and echo the version string if it failed
Change-Id: Ied268d2150a30dc1146498e15fa8394afc8a8d0d
While we are here:
- fix uname -r (single quote?!)
- add compat for rhel8 (el kernel and version is 4.18)
- also remove linux version check in mcreboot.sh, trust configure check
Change-Id: I14726d4374b0dfd941640096044ea1d5d88bfcb8
This newer version is much simpler than the old ones:
- the options are noop, this lets the code simplify all the allocating
of a new option struct and passing it around
- ovl_reset_ovl_entry was added and called all the time, but the
mechanism that made this required is gone in this kernel version
On the other hand, one new thing in this version:
- newer kernel check the stacking depth of filesystems now, and we are
reaching the default limit of two with our setup. Bump it to three here.
Also, while we are here, make make fail if requested directory does not
exist, instead of infinitely recurse into make modules in the mcoverlayfs
directory...
Change-Id: I45050d693a0aa6fd3027deaf417c29876ef6a1ea
(1) Add --enable-uti option. The binary-patch library is
preloaded with this option.
(2) Binary-patching is done by syscall_intercept developed by Intel
This commit includes the following fixes:
(1) Fix do_exit() and terminate() handling
(2) Fix timing of killing mcexec threads when McKernel thread calls terminate()
Change-Id: Iad885e1e5540ed79f0808debd372463e3b8fecea
Instead of parsing System.map, use kallsyms_lookup_name() to
get unexported symbols addresses at module loading time.
This lets mckernel work with kaslr enabled (it gets enabled by
default from el7.5 onwards)
Change-Id: Ie4349fc1145ebce44f37f1f40c16f9d75584074d
This is a response to a CEA's request.
- The tools directory is created under the mckernel directory.
- Some include files are now installed in the install directory,
but we should rethink of it.
1. Fix OOM: Count memory usage only when allocation succeeded
2. Fix OOM: Make user allocation fail when memory is running out
3. Fix OOM: Move rusage_init() before numa_init()
4. Cleanup: Rename ihkconfig/ihkosctl functions
5. Cleanup: Pass event type to eventfd()
6. Cleanup: arch/.../rusage.h --> arch/.../arch_rusage.h
1. User asks mcctrl for the result via ihk_os_getrusage() with passing void *
2. mcctrl compiles the results and passes them to the user
3. User interprets it by using the type defined in the LWK-specific header
This evals 4.12.5-300.fc26.x86_64 right away, which is necessary for e.g.
the variable used for System.map detection.
(looking at history, ihk always had double-quotes while mckernel always
had singles quotes -- this looks like a manual copy typo?)
When rebooting:
1. Stop irqbalance
2. Modify /proc/irq/*/smp_affinity so that McKernel cores are not
included
3. Start irqbalance with McKernel cores and IHK IRQ banned from
load balancing
When stopping:
1. Stop irqbalance
2. Restore /proc/irq/*/smp_affinity
3. Restart irqbalance with the system default settings
refs #760
