2008/12/13 Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>: > Steven, is it possible to trigger tracing for any function when a > function in the list set up by the user is running and then stop tracing > when it exits? > > - Arnaldo > Hi Arnaldo, Yes it's possible with ftrace, by using the function graph tracer ( an ftrace extension that adds the tracing on return). To enable it just do: echo function_graph > /debugfs/tracing/current_tracer And to trace by choosing a particular function as the root of the call stack, just do the things explained on this patch: http://git.kernel.org/?p=linux/kernel/git/mingo/linux-2.6-sched-devel.git;a=commit;h=ea4e2bc4d9f7370e57a343ccb5e7c0ad3222ec3c And the tracing will finish after this function returns :-) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
