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|---|---|---|
b12d6ec097
This consumes functionality exported in the previous patch. It does the
main job of printing with BTF data. This is used in the following patch
to provide a more readable output of a map's dump. It relies on
json_writer to do json printing. Below is sample output where map keys
are ints and values are of type struct A:
typedef int int_type;
enum E {
E0,
E1,
};
struct B {
int x;
int y;
};
struct A {
int m;
unsigned long long n;
char o;
int p[8];
int q[4][8];
enum E r;
void *s;
struct B t;
const int u;
int_type v;
unsigned int w1: 3;
unsigned int w2: 3;
};
$ sudo bpftool map dump id 14
[{
"key": 0,
"value": {
"m": 1,
"n": 2,
"o": "c",
"p": [15,16,17,18,15,16,17,18
],
"q": [[25,26,27,28,25,26,27,28
],[35,36,37,38,35,36,37,38
],[45,46,47,48,45,46,47,48
],[55,56,57,58,55,56,57,58
]
],
"r": 1,
"s": 0x7ffd80531cf8,
"t": {
"x": 5,
"y": 10
},
"u": 100,
"v": 20,
"w1": 0x7,
"w2": 0x3
}
}
]
This patch uses json's {} and [] to imply struct/union and array. More
explicit information can be added later. For example, a command line
option can be introduced to print whether a key or value is struct
or union, name of a struct etc. This will however come at the expense
of duplicating info when, for example, printing an array of structs.
enums are printed as ints without their names.
Signed-off-by: Okash Khawaja <osk@fb.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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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.
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.