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| author | Matt Fleming <matt.fleming@intel.com> | 2015-01-23 18:45:40 +0000 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-02-25 13:53:28 +0100 |
| commit | 39bed6cbb842d8edf5a26b01122b391d36775b5e (patch) | |
| tree | 397b0b53990d0dde3f7cea5488f0fc2964294f3e /kernel/events | |
| parent | 8a26ce4e544659256349551283414df504889a59 (diff) | |
| download | linux-39bed6cbb842d8edf5a26b01122b391d36775b5e.tar.gz linux-39bed6cbb842d8edf5a26b01122b391d36775b5e.tar.bz2 linux-39bed6cbb842d8edf5a26b01122b391d36775b5e.zip | |
perf: Make perf_cgroup_from_task() global
Move perf_cgroup_from_task() from kernel/events/ to include/linux/ along
with the necessary struct definitions, so that it can be used by the PMU
code.
When the upcoming Intel Cache Monitoring PMU driver assigns monitoring
IDs to perf events, it needs to be able to check whether any two
monitoring events overlap (say, a cgroup and task event), which means we
need to be able to lookup the cgroup associated with a task (if any).
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kanaka Juvva <kanaka.d.juvva@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Vikas Shivappa <vikas.shivappa@linux.intel.com>
Link: http://lkml.kernel.org/r/1422038748-21397-2-git-send-email-matt@codeblueprint.co.uk
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events')
| -rw-r--r-- | kernel/events/core.c | 28 |
1 files changed, 1 insertions, 27 deletions
diff --git a/kernel/events/core.c b/kernel/events/core.c index 20cece0a7aea..072de3143244 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -34,11 +34,11 @@ #include <linux/syscalls.h> #include <linux/anon_inodes.h> #include <linux/kernel_stat.h> +#include <linux/cgroup.h> #include <linux/perf_event.h> #include <linux/ftrace_event.h> #include <linux/hw_breakpoint.h> #include <linux/mm_types.h> -#include <linux/cgroup.h> #include <linux/module.h> #include <linux/mman.h> #include <linux/compat.h> @@ -351,32 +351,6 @@ static void perf_ctx_unlock(struct perf_cpu_context *cpuctx, #ifdef CONFIG_CGROUP_PERF -/* - * perf_cgroup_info keeps track of time_enabled for a cgroup. - * This is a per-cpu dynamically allocated data structure. - */ -struct perf_cgroup_info { - u64 time; - u64 timestamp; -}; - -struct perf_cgroup { - struct cgroup_subsys_state css; - struct perf_cgroup_info __percpu *info; -}; - -/* - * Must ensure cgroup is pinned (css_get) before calling - * this function. In other words, we cannot call this function - * if there is no cgroup event for the current CPU context. - */ -static inline struct perf_cgroup * -perf_cgroup_from_task(struct task_struct *task) -{ - return container_of(task_css(task, perf_event_cgrp_id), - struct perf_cgroup, css); -} - static inline bool perf_cgroup_match(struct perf_event *event) { |