---------------------------------------------------------------------- Date: Fri, 04 Apr 2014 08:26:52 -0400 From: Francis Giraldeau <[email protected]> To: "zhenyu.ren" <[email protected]>
> > But where are these two tracepoints (hits) in kernel source code? > > If I remember correctly, for x86_64, the file is arch/x86/kernel/entry_64.S > and search for syscall_trace_enter. > > Francis Syscall_trace_enter appears in a handful of .S files (assembly code) in the arch hierarchy. Also ptrace.c and thread_info.h. If thread info includes the TIF_SYSCALL_TRACEPOINT flag, in the x86 case this invokes the tracepoint trace_sys_enter (registered and unregistered by kernel/trace/trace_syscalls.c). The tracepoint provider is the lttng-tracer.ko kernel module. Daniel U. Thibault Protection des systèmes et contremesures (PSC) | Systems Protection & Countermeasures (SPC) Cyber sécurité pour les missions essentielles (CME) | Mission Critical Cyber Security (MCCS) R & D pour la défense Canada - Valcartier (RDDC Valcartier) | Defence R&D Canada - Valcartier (DRDC Valcartier) 2459 route de la Bravoure Québec QC G3J 1X5 CANADA Vox : (418) 844-4000 x4245 Fax : (418) 844-4538 NAC : 918V QSDJ <http://www.travelgis.com/map.asp?addr=918V%20QSDJ> Gouvernement du Canada | Government of Canada <http://www.valcartier.drdc-rddc.gc.ca/> _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
