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Groups > linux.kernel > #1543244
| From | Peter Zijlstra <peterz@infradead.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info |
| Date | 2016-12-16 09:30 +0100 |
| Message-ID | <sOW3U-10d-7@gated-at.bofh.it> (permalink) |
| References | <sOJ6F-Ms-5@gated-at.bofh.it> <sOJ6F-Ms-9@gated-at.bofh.it> <sOJgl-PQ-1@gated-at.bofh.it> <sOUOt-ep-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On Fri, Dec 16, 2016 at 11:57:47AM +0530, Hari Bathini wrote:
>
>
> On Friday 16 December 2016 12:16 AM, Peter Zijlstra wrote:
> >On Fri, Dec 16, 2016 at 12:07:06AM +0530, Hari Bathini wrote:
> >>+struct perf_ns_link_info {
> >>+ __u64 dev;
> >>+ __u64 ino;
> >>+};
> >>+
> >>+enum {
> >>+ NET_NS_INDEX = 0,
> >>+ UTS_NS_INDEX = 1,
> >>+ IPC_NS_INDEX = 2,
> >>+ PID_NS_INDEX = 3,
> >>+ USER_NS_INDEX = 4,
> >>+ MNT_NS_INDEX = 5,
> >>+ CGROUP_NS_INDEX = 6,
> >>+
> >>+ NAMESPACES_MAX, /* maximum available namespaces */
> >>+};
> >>+
> >> enum perf_event_type {
> >> /*
> >>@@ -862,6 +880,17 @@ enum perf_event_type {
> >> */
> >> PERF_RECORD_SWITCH_CPU_WIDE = 15,
> >>+ /*
> >>+ * struct {
> >>+ * struct perf_event_header header;
> >>+ * u32 pid;
> >>+ * u32 tid;
> >>+ * struct namespace_link_info link_info[NAMESPACES_MAX];
> >>+ * struct sample_id sample_id;
> >>+ * };
> >>+ */
> >>+ PERF_RECORD_NAMESPACES = 16,
> >>+
> >> PERF_RECORD_MAX, /* non-ABI */
> >> };
> >What happens if a future kernel adds another namespace?
> >
>
> No impact unless NAMESPACES_MAX in include/uapi/linux/perf_event.h is
> updated to accommodate that..
> And if it is updated, the corresponding change is expected in perf-tool as
> well..
And what happens if you try and process old data files with the new
tools or the other way around?
You must not expect lock-step updates for this to work.
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[PATCH v4 0/3] perf: add support for analyzing events for containers Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-15 19:40 +0100
[PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-15 19:40 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-15 19:50 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-16 08:10 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-16 09:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-16 19:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-16 21:10 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-21 14:10 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-21 14:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-21 17:00 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info ebiederm@xmission.com (Eric W. Biederman) - 2016-12-22 08:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-22 09:00 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info ebiederm@xmission.com (Eric W. Biederman) - 2016-12-22 11:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info Peter Zijlstra <peterz@infradead.org> - 2016-12-22 14:30 +0100
Re: [PATCH v4 1/3] perf: add PERF_RECORD_NAMESPACES to include namespaces related info ebiederm@xmission.com (Eric W. Biederman) - 2016-12-22 19:30 +0100
[PATCH v4 2/3] perf tool: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-15 19:40 +0100
Re: [PATCH v4 2/3] perf tool: add PERF_RECORD_NAMESPACES to include namespaces related info Jiri Olsa <jolsa@redhat.com> - 2016-12-17 18:50 +0100
Re: [PATCH v4 2/3] perf tool: add PERF_RECORD_NAMESPACES to include namespaces related info Hari Bathini <hbathini@linux.vnet.ibm.com> - 2016-12-21 14:20 +0100
Re: [PATCH v4 0/3] perf: add support for analyzing events for containers Krister Johansen <kjlx@templeofstupid.com> - 2016-12-29 02:50 +0100
Re: [PATCH v4 0/3] perf: add support for analyzing events for containers Hari Bathini <hbathini@linux.vnet.ibm.com> - 2017-01-03 12:30 +0100
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