Messages in this thread | | | Date | Wed, 24 Oct 2018 11:16:18 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH V2 17/19] perf scripts python: exported-sql-viewer.py: Add All branches report |
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Em Wed, Oct 24, 2018 at 04:56:03PM +0300, Adrian Hunter escreveu: > However I found kernel disassembly doesn't work, I think due to:
> commit edeb0c90df3581b821a764052d185df985f8b8dc > perf tools: Stop fallbacking to kallsyms for vdso symbols lookup
> As I mentioned here:
> https://lore.kernel.org/lkml/4c682937-3cee-6974-0970-68610e13ad37@intel.com/T/#u
> So I will look at a fix for that also.
Ok.
But then that function receives both the addr and the cpumode, so its callers should take into account the mixed ip/addr cpumodes, i.e. if we get a sample with an ip in kernel and an addr in userspace, all we know is that the ip is in the kernel, so we can either check the x86-specific (well, specific to archs that share the address space for kernel and userspace) machine__kernel_ip(addr) and pass a kernel cpu mode to thread__find_addr(), otherwise ask for thread__find(addr, cpumode=user), no?
Since this is x86 specific stuff, using machine__kernel_ip(addr) to figure out the addr cpumode seems the way to go, right?
- Arnaldo
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