On 18/10/13 17:25, David Ahern wrote: > On 10/18/13 6:29 AM, Adrian Hunter wrote: >> For kernels that do not support PERF_SAMPLE_IDENTIFIER, >> sample types need not be identical to determine >> the sample id from the event. Only the position >> of the sample id needs to be the same. >> >> Compatible sample types are ones in which the bits >> defined by PERF_COMPAT_MASK are the same. >> 'perf_evlist__config()' forces sample types to be >> compatible on that basis. > > Arnaldo and I have discussed adding callchain handling to perf-trace. To do > that we only need stack data (including IP) for one event -- eg, > raw_syscalls:sys_enter. That means raw_syscalls:sys_enter and > raw_syscalls:sys_exit will have different attributes set - including ones in > the MASK.
So how do you know which sample is which? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
