I'm playing around with a new kernel arch and running into problems with
properly configuring the clockevents, especially with SMP. Without SMP you can
easily set up a clockevents masked to cpu 0, and this seems to work fine. But
on SMP this fails silently: high-res timers created on cpu != 0 ne
I'm currently hacking on Linux trying to run a sort of UML-style thing on macOS
(please don't question my sanity :), and I've run into various issues stemming
from macOS having a case-insensitive filesystem.
The one you run into immediately is: there are a number of files (mostly in
netfilter)
on't see anything in the man page about this
If you'd like to try yourself, this is the strace command I've been using:
strace -ttTv -eperf_event_open,mmap,poll -operf.strace perf record stress --cpu
1 --timeout 1
~Theodore
>
> On Sat, 07 Sep 2019 09:14:49 -0700, Theodore D
I'm having trouble figuring out how the kernel handles a particular case in
deadlock detection on posix file locks. Here's the scenario:
PID 1: locks byte 2
PID 3: locks byte 0
PID 2: locks byte 10
PID 1: locks byte 10
PID 2: locks bytes 0-2 inclusive
The last step fails with EDEADLK, but I'm no
This can be verified with a simple test program. I'm not sure if this is
a kernel bug or a documentation bug, though...
---
man2/mmap.2 | 7 +++
1 file changed, 7 insertions(+)
diff --git a/man2/mmap.2 b/man2/mmap.2
index d1942b52a..58361c837 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -515
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