Arnaldo Carvalho de Melo

Conteúdo sindicalizado
Kernel Hacking & Tooling Mostly... 2017-04-04T13:01:26Z
Atualizado: 1 hora 39 segundos atrás

Looking for users of new syscalls

seg, 04/03/2017 - 15:23
Recently Linux got a new syscall to get extended information about files, a super ‘stat’, if you will, read more about it at LWN. So I grabbed the headers with the definitions for the statx arguments to tools/include/ so that ‘perf trace’ can use them to beautify, i.e. to appear as a bitmap of strings, […]
Categorias: Blogs

Getting backtraces from arbitrary places

ter, 03/28/2017 - 20:23
Needs debuginfo, either in a package-debuginfo rpm or equivalent or by building with ‘cc -g’: [root@jouet ~]# perf probe -L icmp_rcv:52 | head -15 52 if (rt->rt_flags & (RTCF_BROADCAST | RTCF_MULTICAST)) { /* * RFC 1122: 3.2.2.6 An ICMP_ECHO to broadcast MAY be * silently ignored (we let user decide with a sysctl). * RFC […]
Categorias: Blogs