Re: [patch] perf_event_open.2: Clarify PERF_EVENT_IOC_REFRESH behavior

2015-02-16 Thread Michael Kerrisk (man-pages)
On 02/12/2015 06:14 PM, Vince Weaver wrote: > > Currently the PERF_EVENT_IOC_REFRESH ioctl, when applied to a group > leader, will refresh all children. Also if a refresh value of 0 > is chosen then the refresh becomes infinite (never runs out). > Back in 2011 PAPI was relying on these behaviors

Re: [patch] perf_event_open.2: Clarify PERF_EVENT_IOC_REFRESH behavior

2015-02-16 Thread Michael Kerrisk (man-pages)
On 02/12/2015 06:14 PM, Vince Weaver wrote: Currently the PERF_EVENT_IOC_REFRESH ioctl, when applied to a group leader, will refresh all children. Also if a refresh value of 0 is chosen then the refresh becomes infinite (never runs out). Back in 2011 PAPI was relying on these behaviors but

[patch] perf_event_open.2: Clarify PERF_EVENT_IOC_REFRESH behavior

2015-02-12 Thread Vince Weaver
Currently the PERF_EVENT_IOC_REFRESH ioctl, when applied to a group leader, will refresh all children. Also if a refresh value of 0 is chosen then the refresh becomes infinite (never runs out). Back in 2011 PAPI was relying on these behaviors but I was told that both were unsupported and subject

[patch] perf_event_open.2: Clarify PERF_EVENT_IOC_REFRESH behavior

2015-02-12 Thread Vince Weaver
Currently the PERF_EVENT_IOC_REFRESH ioctl, when applied to a group leader, will refresh all children. Also if a refresh value of 0 is chosen then the refresh becomes infinite (never runs out). Back in 2011 PAPI was relying on these behaviors but I was told that both were unsupported and subject