From: Wangnan (F) [mailto:wangn...@huawei.com] >On 2015/12/10 23:12, 'Arnaldo Carvalho de Melo' wrote: > >[SNIP] >> But this requires having these special refcnt__ routines, that will make >> tools/perf/ code patterns for reference counts look different that the >> refcount patterns in the kernel :-\ >> >> And would be a requirement to change the observed workload :-\ >> >> Is this _strictly_ required? > >No. The requirement should be: > > 1. The create/get/put/delete functions are non-inline (because dwarf info > is not as reliable as symbol); > 2. From their argument list, we can always get the variable we need (the > pointer of objects, the value of refcnt, etc.)
However, we have to customize it for each application. Perf itself might be OK but others might have different implementation. Thanks,
