mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-25 13:20:52 +07:00
e5d1367f17
This kernel patch adds the ability to filter monitoring based on
container groups (cgroups). This is for use in per-cpu mode only.
The cgroup to monitor is passed as a file descriptor in the pid
argument to the syscall. The file descriptor must be opened to
the cgroup name in the cgroup filesystem. For instance, if the
cgroup name is foo and cgroupfs is mounted in /cgroup, then the
file descriptor is opened to /cgroup/foo. Cgroup mode is
activated by passing PERF_FLAG_PID_CGROUP in the flags argument
to the syscall.
For instance to measure in cgroup foo on CPU1 assuming
cgroupfs is mounted under /cgroup:
struct perf_event_attr attr;
int cgroup_fd, fd;
cgroup_fd = open("/cgroup/foo", O_RDONLY);
fd = perf_event_open(&attr, cgroup_fd, 1, -1, PERF_FLAG_PID_CGROUP);
close(cgroup_fd);
Signed-off-by: Stephane Eranian <eranian@google.com>
[ added perf_cgroup_{exit,attach} ]
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4d590250.114ddf0a.689e.4482@mx.google.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
73 lines
798 B
C
73 lines
798 B
C
/* Add subsystem definitions of the form SUBSYS(<name>) in this
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* file. Surround each one by a line of comment markers so that
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* patches don't collide
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*/
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/* */
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/* */
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#ifdef CONFIG_CPUSETS
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SUBSYS(cpuset)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_DEBUG
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SUBSYS(debug)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_NS
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SUBSYS(ns)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_SCHED
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SUBSYS(cpu_cgroup)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_CPUACCT
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SUBSYS(cpuacct)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_MEM_RES_CTLR
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SUBSYS(mem_cgroup)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_DEVICE
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SUBSYS(devices)
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#endif
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/* */
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#ifdef CONFIG_CGROUP_FREEZER
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SUBSYS(freezer)
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#endif
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/* */
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#ifdef CONFIG_NET_CLS_CGROUP
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SUBSYS(net_cls)
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#endif
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/* */
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#ifdef CONFIG_BLK_CGROUP
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SUBSYS(blkio)
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#endif
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#ifdef CONFIG_CGROUP_PERF
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SUBSYS(perf)
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#endif
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/* */
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