On Thu, Sep 14, 2017 at 12:37 PM, Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx> wrote: > On Thu, Sep 14, 2017 at 08:20:09AM -0400, Cliff Brake wrote: >> Hi, >> >> I'm trying to better understand the kernel module loading mechanism >> (for example when you plug in a USB device and a kernel module >> autoloads). It appears that depmod creates a module.alias map that >> maps USB info to modules. Is there any way to instrument or observe >> the actual loading process? > > Why do you need to "observe" it? You can always use kprobes or some > tracing tool to see the filesystem accesses if you really care about > this. > > But it should all "just work", right? Is something failing for you? Its working great -- more just a point of curiosity -- would like to understand what user-space tool is actually getting called to do the module loading. Especially since the /sbin/hotplug location/mechanism seems to have changed -- seems we should get some of the documentation updated (unless I'm missing something). Thanks for the kprobes idea -- will look into that and kernel source ... (BTW, this curiosity was motivated by a Eudyptula Challenge exercise) Thanks, Cliff -- ================= http://bec-systems.com -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
