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766e0618e4
Create auxiliary trace data log files when invoked with option --itrace=d as in: [root@s35lp76 perf] perf report -i perf.data.aux1 --stdio --itrace=d perf report creates several data files in the current directory named aux.smp.## where ## is a 2 digit hex number with leading zeros representing the CPU number this trace data was recorded from. The file contents is binary and contains the CPU-Measurement Sampling Data Blocks (SDBs). The directory to save the auxiliary trace buffer can be changed using the perf config file and command. Specify section 'auxtrace' keyword 'dumpdir' and assign it a valid directory name. If the directory does not exist or has the wrong file type, the current directory is used. [root@p23lp27 perf]# perf config auxtrace.dumpdir=/tmp [root@p23lp27 perf]# perf config --user -l auxtrace.dumpdir=/tmp [root@p23lp27 perf]# perf report ... [root@p23lp27 perf]# ll /tmp/aux.smp.00 -rw-r--r-- 1 root root 204800 Aug 2 13:48 /tmp/aux.smp.00 [root@p23lp27 perf]# Signed-off-by: Thomas Richter <tmricht@linux.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Link: http://lkml.kernel.org/r/20180809045650.89197-1-tmricht@linux.ibm.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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.