[openib-general] [PATCH] core_cache.c: Eliminate use of ts_kernel_[services trace].h
Roland Dreier
roland at topspin.com
Sat Sep 18 11:22:34 PDT 2004
Grant> not true. We've gone round on this issue on the linux-ia64
Grant> mailing list in regard to misaligned accesses causing
Grant> console output. I don't have a URL handy. The conclusion
Grant> was it's pretty simple to filter console output based on
Grant> priority levels.
I don't think the ia64 "unaligned access" message is a good
counterexample because:
- they're not just an unconditional printk -- they're ratelimited
- they can be turned off per-process with "prctl --unaligned=silent"
- people actually complain about the message spew all the time
- setting your console loglevel so you don't see them still leaves
them filling up the logbuffer (and the unaligned access message is
at KERN_WARNING so setting your loglevel so you don't see them
blocks a lot of other messages you probably do want to see)
The example in my original email is even worse than the "unaligned
access" message in that it's a completely benign informational message
-- there's not even the justification of "you're hurting performance,
fix the program doing unaligned accessess."
- R.
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