linux-kernel - [PATCH v3 36/46] perf/core: add perf_event cgroup hooks for subsystem attributes

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Message-Id: <1477787923-61185-37-git-send-email-davidcc@google.com>
Date:   Sat, 29 Oct 2016 17:38:33 -0700
From:   David Carrillo-Cisneros <davidcc@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     "x86@...nel.org" <x86@...nel.org>, Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andi Kleen <ak@...ux.intel.com>,
        Kan Liang <kan.liang@...el.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Vegard Nossum <vegard.nossum@...il.com>,
        Marcelo Tosatti <mtosatti@...hat.com>,
        Nilay Vaish <nilayvaish@...il.com>,
        Borislav Petkov <bp@...e.de>,
        Vikas Shivappa <vikas.shivappa@...ux.intel.com>,
        Ravi V Shankar <ravi.v.shankar@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>,
        Paul Turner <pjt@...gle.com>,
        Stephane Eranian <eranian@...gle.com>,
        David Carrillo-Cisneros <davidcc@...gle.com>
Subject: [PATCH v3 36/46] perf/core: add perf_event cgroup hooks for subsystem attributes

Allow architectures to define additional attributes for the perf cgroup.

Signed-off-by: David Carrillo-Cisneros <davidcc@...gle.com>
---
 include/linux/perf_event.h | 4 ++++
 kernel/events/core.c       | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index 3b1d542..26e6ee3 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -1412,4 +1412,8 @@ int perf_event_exit_cpu(unsigned int cpu);
 # define perf_cgroup_arch_css_offline(css) do { } while (0)
 #endif
 
+#ifndef PERF_CGROUP_ARCH_CGRP_SUBSYS_ATTS
+#define PERF_CGROUP_ARCH_CGRP_SUBSYS_ATTS
+#endif
+
 #endif /* _LINUX_PERF_EVENT_H */
diff --git a/kernel/events/core.c b/kernel/events/core.c
index 4f43c75..b6ca765 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -10849,5 +10849,7 @@ struct cgroup_subsys perf_event_cgrp_subsys = {
 	.css_offline	= perf_cgroup_css_offline,
 	.css_free	= perf_cgroup_css_free,
 	.attach		= perf_cgroup_attach,
+	/* Expand architecture specific attributes. */
+	PERF_CGROUP_ARCH_CGRP_SUBSYS_ATTS
 };
 #endif /* CONFIG_CGROUP_PERF */
-- 
2.8.0.rc3.226.g39d4020