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| Filename | Latest commit message | Latest commit date |
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1be334e5c0
While investigating a bug related to higher atomic allocation failures, we noticed the failure warnings positively drowning the console, and in our case trigger lockup warnings because of a serial console too slow to handle all that output. But even if we had a faster console, it's unclear what additional information the current level of repetition provides. Allocation failures happen for three reasons: The machine is OOM, the VM is failing to handle reasonable requests, or somebody is making unreasonable requests (and didn't acknowledge their opportunism with __GFP_NOWARN). Having the memory dump, a callstack, and the ratelimit stats on skipped failure warnings should provide enough information to let users/admins/developers know whether something is wrong and point them in the right direction for debugging, bpftracing etc. Limit allocation failure warnings to one spew every ten seconds. Link: http://lkml.kernel.org/r/20191028194906.26899-1-hannes@cmpxchg.org Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Acked-by: David Rientjes <rientjes@google.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.