linux-kernel - [PATCH v6 03/12] cgroup/misc: Add SGX EPC resource type

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Message-Id: <20231030182013.40086-4-haitao.huang@linux.intel.com>
Date:   Mon, 30 Oct 2023 11:20:04 -0700
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,
        Haitao Huang <haitao.huang@...ux.intel.com>
Subject: [PATCH v6 03/12] 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 2a3b1f8dc669..368f6c5fccae 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 fa464324ccf8..a22500851fe8 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