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author | Nicolas Dechesne <nicolas.dechesne@linaro.org> | 2020-12-03 22:38:40 +0100 |
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committer | Richard Purdie <richard.purdie@linuxfoundation.org> | 2020-12-09 12:21:27 +0000 |
commit | 11c048fbeae7d3eb12c43bd14953cb64b3de53bd (patch) | |
tree | 47f6e6e95bc650f15636b388967d7034ac8d8f5c /documentation/profile-manual/profile-manual-intro.rst | |
parent | a0afa48859def9f6410ad1d3b1296683e14fc2b7 (diff) | |
download | poky-11c048fbeae7d3eb12c43bd14953cb64b3de53bd.tar.gz |
profile-manual: remove 'profile-manual' from filenames
All filenames duplicate the 'manual name', which is not needed, and
make all references longer than they should. Rename all files to be as
consise as possible, and fix all references
(From yocto-docs rev: 44405490888960208058d016e387507e21c9f478)
Signed-off-by: Nicolas Dechesne <nicolas.dechesne@linaro.org>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Diffstat (limited to 'documentation/profile-manual/profile-manual-intro.rst')
-rw-r--r-- | documentation/profile-manual/profile-manual-intro.rst | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/documentation/profile-manual/profile-manual-intro.rst b/documentation/profile-manual/profile-manual-intro.rst deleted file mode 100644 index 4e1008b05e..0000000000 --- a/documentation/profile-manual/profile-manual-intro.rst +++ /dev/null | |||
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1 | .. SPDX-License-Identifier: CC-BY-SA-2.0-UK | ||
2 | |||
3 | ****************************************** | ||
4 | Yocto Project Profiling and Tracing Manual | ||
5 | ****************************************** | ||
6 | |||
7 | Introduction | ||
8 | ============ | ||
9 | |||
10 | Yocto bundles a number of tracing and profiling tools - this 'HOWTO' | ||
11 | describes their basic usage and shows by example how to make use of them | ||
12 | to examine application and system behavior. | ||
13 | |||
14 | The tools presented are for the most part completely open-ended and have | ||
15 | quite good and/or extensive documentation of their own which can be used | ||
16 | to solve just about any problem you might come across in Linux. Each | ||
17 | section that describes a particular tool has links to that tool's | ||
18 | documentation and website. | ||
19 | |||
20 | The purpose of this 'HOWTO' is to present a set of common and generally | ||
21 | useful tracing and profiling idioms along with their application (as | ||
22 | appropriate) to each tool, in the context of a general-purpose | ||
23 | 'drill-down' methodology that can be applied to solving a large number | ||
24 | (90%?) of problems. For help with more advanced usages and problems, | ||
25 | please see the documentation and/or websites listed for each tool. | ||
26 | |||
27 | The final section of this 'HOWTO' is a collection of real-world examples | ||
28 | which we'll be continually adding to as we solve more problems using the | ||
29 | tools - feel free to add your own examples to the list! | ||
30 | |||
31 | General Setup | ||
32 | ============= | ||
33 | |||
34 | Most of the tools are available only in 'sdk' images or in images built | ||
35 | after adding 'tools-profile' to your local.conf. So, in order to be able | ||
36 | to access all of the tools described here, please first build and boot | ||
37 | an 'sdk' image e.g. :: | ||
38 | |||
39 | $ bitbake core-image-sato-sdk | ||
40 | |||
41 | or alternatively by adding 'tools-profile' to the EXTRA_IMAGE_FEATURES line in | ||
42 | your local.conf: :: | ||
43 | |||
44 | EXTRA_IMAGE_FEATURES = "debug-tweaks tools-profile" | ||
45 | |||
46 | If you use the 'tools-profile' method, you don't need to build an sdk image - | ||
47 | the tracing and profiling tools will be included in non-sdk images as well e.g.: :: | ||
48 | |||
49 | $ bitbake core-image-sato | ||
50 | |||
51 | .. note:: | ||
52 | |||
53 | By default, the Yocto build system strips symbols from the binaries | ||
54 | it packages, which makes it difficult to use some of the tools. | ||
55 | |||
56 | You can prevent that by setting the | ||
57 | :term:`INHIBIT_PACKAGE_STRIP` | ||
58 | variable to "1" in your ``local.conf`` when you build the image: :: | ||
59 | |||
60 | INHIBIT_PACKAGE_STRIP = "1" | ||
61 | |||
62 | The above setting will noticeably increase the size of your image. | ||
63 | |||
64 | If you've already built a stripped image, you can generate debug | ||
65 | packages (xxx-dbg) which you can manually install as needed. | ||
66 | |||
67 | To generate debug info for packages, you can add dbg-pkgs to | ||
68 | EXTRA_IMAGE_FEATURES in local.conf. For example: :: | ||
69 | |||
70 | EXTRA_IMAGE_FEATURES = "debug-tweaks tools-profile dbg-pkgs" | ||
71 | |||
72 | Additionally, in order to generate the right type of debuginfo, we also need to | ||
73 | set :term:`PACKAGE_DEBUG_SPLIT_STYLE` in the ``local.conf`` file: :: | ||
74 | |||
75 | PACKAGE_DEBUG_SPLIT_STYLE = 'debug-file-directory' | ||