Hi Brendan, > Hey, thanks for doing this! I was looking into this a few weeks ago > and root caused part of the issue in GCC and in the kernel, but I did > not have a fix put together. > > Anyway, most of the patches make sense to me, but I am not able to > apply this patch on torvalds/master. Do you mind sending a rebase so I > can test it? Well, if you see my other replies in the thread, I gave up for various reasons, see https://lore.kernel.org/r/d36ea54d8c0a8dd706826ba844a6f27691f45d55.camel@xxxxxxxxxxxxxxxx Personally, I ended up switching to CONFIG_GCOV_KERNEL instead because it actually works for modules, but then it was _really_ slow (think 30s to copy data for a few modules), but I root-caused this and ultimately sent these patches instead: https://patchwork.ozlabs.org/project/linux-um/patch/20210315233804.d3e52f6a3422.I9672eef7dfa7ce6c3de1ccf7ab8d9aad1fa7f3a6@changeid/ https://patchwork.ozlabs.org/project/linux-um/patch/20210315234731.2e03184a344b.I04f1816296f04c5aa7d7d88b33bd4a14dd458da8@changeid/ johannes
