Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Tue, 27 Oct 2020 11:11:53 +0100 | Subject | Re: [PATCH v1] scripts/dev-needs: Add script to list device dependencies |
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Hi Saravana,
On Wed, Sep 2, 2020 at 12:51 AM Saravana Kannan <saravanak@google.com> wrote: > This script can be useful for: > - Figuring out the list of modules you need to pack in initrd > - Figuring out the list of drivers you need to modularize for a device > to be fully functional without building in any dependencies. > - Figuring out which drivers to enable first, when porting drivers > between kernels (say, to upstream). > - Plotting graphs of system dependencies, etc. > > Usage: dev-needs.sh [-c|-d|-m|-f] [filter options] <list of devices> > > This script needs to be run on the target device once it has booted to a > shell. > > The script takes as input a list of one or more device directories under > /sys/devices and then lists the probe dependency chain (suppliers and > parents) of these devices. It does a breadth first search of the dependency > chain, so the last entry in the output is close to the root of the > dependency chain.
Thanks for your patch!
> --- /dev/null > +++ b/scripts/dev-needs.sh > @@ -0,0 +1,315 @@ > +#! /bin/sh
On Debian, where /bin/sh -> dash:
dev-needs.sh: 6: dev-needs.sh: Syntax error: "(" unexpected
When using bash, I get:
# ./dev-needs.sh /sys/devices/platform/soc/feb00000.display ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found
# ./dev-needs.sh -c /sys/devices/platform/soc/feb00000.display ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found ./dev-needs.sh: line 255: detail: command not found
Which shell should I use?
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
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