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be8ecc57f1
Invoking addr2line in a separate subprocess, one for each required lookup, takes a terribly long time. This patch introduces a long-running addr2line process for each DSO, *DRAMATICALLY* speeding up runs of perf. What used to take tens of minutes now takes tens of seconds. Debian bug report about this issue: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911815 Signed-off-by: Tony Garnock-Jones <tonyg@leastfixedpoint.com> Tested-by: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20210916120939.453536-1-tonyg@leastfixedpoint.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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.