linux-kernel - [PATCH v7 03/15] cgroup/misc: Add SGX EPC resource type

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Date: Mon, 22 Jan 2024 09:20:36 -0800
From: Haitao Huang <haitao.huang@...ux.intel.com>
To: jarkko@...nel.org,
	dave.hansen@...ux.intel.com,
	tj@...nel.org,
	mkoutny@...e.com,
	linux-kernel@...r.kernel.org,
	linux-sgx@...r.kernel.org,
	x86@...nel.org,
	cgroups@...r.kernel.org,
	tglx@...utronix.de,
	mingo@...hat.com,
	bp@...en8.de,
	hpa@...or.com,
	sohil.mehta@...el.com
Cc: zhiquan1.li@...el.com,
	kristen@...ux.intel.com,
	seanjc@...gle.com,
	zhanb@...rosoft.com,
	anakrish@...rosoft.com,
	mikko.ylinen@...ux.intel.com,
	yangjie@...rosoft.com
Subject: [PATCH v7 03/15] cgroup/misc: Add SGX EPC resource type

From: Kristen Carlson Accardi <kristen@...ux.intel.com>

Add SGX EPC memory, MISC_CG_RES_SGX_EPC, to be a valid resource type
for the misc controller.

Signed-off-by: Kristen Carlson Accardi <kristen@...ux.intel.com>
Co-developed-by: Haitao Huang <haitao.huang@...ux.intel.com>
Signed-off-by: Haitao Huang <haitao.huang@...ux.intel.com>
---
V6:
- Split the original patch into this and the preceding one (Kai)
---
 include/linux/misc_cgroup.h | 4 ++++
 kernel/cgroup/misc.c        | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/include/linux/misc_cgroup.h b/include/linux/misc_cgroup.h
index 541a5611c597..2f6cc3a0ad23 100644
--- a/include/linux/misc_cgroup.h
+++ b/include/linux/misc_cgroup.h
@@ -17,6 +17,10 @@ enum misc_res_type {
 	MISC_CG_RES_SEV,
 	/* AMD SEV-ES ASIDs resource */
 	MISC_CG_RES_SEV_ES,
+#endif
+#ifdef CONFIG_CGROUP_SGX_EPC
+	/* SGX EPC memory resource */
+	MISC_CG_RES_SGX_EPC,
 #endif
 	MISC_CG_RES_TYPES
 };
diff --git a/kernel/cgroup/misc.c b/kernel/cgroup/misc.c
index 99d971ecc842..4c519423b071 100644
--- a/kernel/cgroup/misc.c
+++ b/kernel/cgroup/misc.c
@@ -24,6 +24,10 @@ static const char *const misc_res_name[] = {
 	/* AMD SEV-ES ASIDs resource */
 	"sev_es",
 #endif
+#ifdef CONFIG_CGROUP_SGX_EPC
+	/* Intel SGX EPC memory bytes */
+	"sgx_epc",
+#endif
 };
 
 /* Root misc cgroup */
-- 
2.25.1