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| Filename | Latest commit message | Latest commit date |
|---|---|---|
75998bb263
The -c option to enable multiplex scaling has been useless for quite
some time because scaling is default.
It's only useful as --no-scale to disable scaling. But the non scaling
code path has bitrotted and doesn't print anything because perf output
code relies on value run/ena information.
Also even when we don't want to scale a value it's still useful to show
its multiplex percentage.
This patch:
- Fixes help and documentation to show --no-scale instead of -c
- Removes -c, only keeps the long option because -c doesn't support negatives.
- Enables running/enabled even with --no-scale
- And fixes some other problems in the no-scale output.
Before:
$ perf stat --no-scale -e cycles true
Performance counter stats for 'true':
<not counted> cycles
0.000984154 seconds time elapsed
After:
$ ./perf stat --no-scale -e cycles true
Performance counter stats for 'true':
706,070 cycles
0.001219821 seconds time elapsed
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
LPU-Reference: 20190314225002.30108-9-andi@firstfloor.org
Link: https://lkml.kernel.org/n/tip-xggjvwcdaj2aqy8ib3i4b1g6@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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| README | ||
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.