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Diffstat (limited to 'Documentation/debugging-modules.txt')
-rw-r--r-- | Documentation/debugging-modules.txt | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/debugging-modules.txt b/Documentation/debugging-modules.txt new file mode 100644 index 000000000000..24029f65fc94 --- /dev/null +++ b/Documentation/debugging-modules.txt | |||
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1 | Debugging Modules after 2.6.3 | ||
2 | ----------------------------- | ||
3 | |||
4 | In almost all distributions, the kernel asks for modules which don't | ||
5 | exist, such as "net-pf-10" or whatever. Changing "modprobe -q" to | ||
6 | "succeed" in this case is hacky and breaks some setups, and also we | ||
7 | want to know if it failed for the fallback code for old aliases in | ||
8 | fs/char_dev.c, for example. | ||
9 | |||
10 | In the past a debugging message which would fill people's logs was | ||
11 | emitted. This debugging message has been removed. The correct way | ||
12 | of debugging module problems is something like this: | ||
13 | |||
14 | echo '#! /bin/sh' > /tmp/modprobe | ||
15 | echo 'echo "$@" >> /tmp/modprobe.log' >> /tmp/modprobe | ||
16 | echo 'exec /sbin/modprobe "$@"' >> /tmp/modprobe | ||
17 | chmod a+x /tmp/modprobe | ||
18 | echo /tmp/modprobe > /proc/sys/kernel/modprobe | ||