Re: [PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-28 Thread Jiri Olsa
On Sat, Oct 27, 2018 at 01:09:44PM -0700, Vinicius Costa Gomes wrote: > Hi Jirka, > > Jiri Olsa writes: > > > On Fri, Oct 26, 2018 at 04:19:52PM -0700, Vinicius Costa Gomes wrote: > >> Hi, > >> > >> Adrian Hunter writes: > >> > >> > On 18/10/18 1:55 AM, Arnaldo Carvalho de Melo wrote: > >> >>

Re: [PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-27 Thread Vinicius Costa Gomes
Hi Jirka, Jiri Olsa writes: > On Fri, Oct 26, 2018 at 04:19:52PM -0700, Vinicius Costa Gomes wrote: >> Hi, >> >> Adrian Hunter writes: >> >> > On 18/10/18 1:55 AM, Arnaldo Carvalho de Melo wrote: >> >> From: Arnaldo Carvalho de Melo >> >> >> >> David reports that: >> >> >> >> >> >> Perf h

Re: [PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-27 Thread Jiri Olsa
On Fri, Oct 26, 2018 at 04:19:52PM -0700, Vinicius Costa Gomes wrote: > Hi, > > Adrian Hunter writes: > > > On 18/10/18 1:55 AM, Arnaldo Carvalho de Melo wrote: > >> From: Arnaldo Carvalho de Melo > >> > >> David reports that: > >> > >> > >> Perf has this hack where it uses the kernel symbol

Re: [PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-26 Thread Vinicius Costa Gomes
Hi, Adrian Hunter writes: > On 18/10/18 1:55 AM, Arnaldo Carvalho de Melo wrote: >> From: Arnaldo Carvalho de Melo >> >> David reports that: >> >> >> Perf has this hack where it uses the kernel symbol map as a backup when >> a symbol can't be found in the user's symbol table(s). > > I don't

Re: [PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-17 Thread Adrian Hunter
On 18/10/18 1:55 AM, Arnaldo Carvalho de Melo wrote: > From: Arnaldo Carvalho de Melo > > David reports that: > > > Perf has this hack where it uses the kernel symbol map as a backup when > a symbol can't be found in the user's symbol table(s). I don't think this is a complete fix because it e

[PATCH 11/11] perf tools: Stop fallbacking to kallsyms for vdso symbols lookup

2018-10-17 Thread Arnaldo Carvalho de Melo
From: Arnaldo Carvalho de Melo David reports that: Perf has this hack where it uses the kernel symbol map as a backup when a symbol can't be found in the user's symbol table(s). This causes problems because the tests driving this code path use machine__kernel_ip(), and that is completely meani