[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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