[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20230915224227.1336967-10-babu.moger@amd.com>
Date: Fri, 15 Sep 2023 17:42:26 -0500
From: Babu Moger <babu.moger@....com>
To: <corbet@....net>, <reinette.chatre@...el.com>,
<tglx@...utronix.de>, <mingo@...hat.com>, <bp@...en8.de>
CC: <fenghua.yu@...el.com>, <dave.hansen@...ux.intel.com>,
<x86@...nel.org>, <hpa@...or.com>, <paulmck@...nel.org>,
<akpm@...ux-foundation.org>, <quic_neeraju@...cinc.com>,
<rdunlap@...radead.org>, <damien.lemoal@...nsource.wdc.com>,
<songmuchun@...edance.com>, <peterz@...radead.org>,
<jpoimboe@...nel.org>, <pbonzini@...hat.com>, <babu.moger@....com>,
<chang.seok.bae@...el.com>, <pawan.kumar.gupta@...ux.intel.com>,
<jmattson@...gle.com>, <daniel.sneddon@...ux.intel.com>,
<sandipan.das@....com>, <tony.luck@...el.com>,
<james.morse@....com>, <linux-doc@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <bagasdotme@...il.com>,
<eranian@...gle.com>, <christophe.leroy@...roup.eu>,
<jarkko@...nel.org>, <adrian.hunter@...el.com>,
<quic_jiles@...cinc.com>, <peternewman@...gle.com>
Subject: [PATCH v10 09/10] x86/resctrl: Add support for the files for MON groups only
There are 3 types resctrl root files.
1. RFTYPE_BASE : Files common for both MON and CTRL groups
2. RFTYPE_BASE | RFTYPE_CTRL : Files only for CTRL groups
3. RFTYPE_BASE | RFTYPE_MON : Files only for MON groups
Files only for the MON groups are not supported now. Add the
support to create these files.
Signed-off-by: Babu Moger <babu.moger@....com>
---
arch/x86/kernel/cpu/resctrl/rdtgroup.c | 15 +++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
index 953b082cec8a..55d1b90f460e 100644
--- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c
+++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c
@@ -2533,6 +2533,7 @@ static void schemata_list_destroy(void)
static int rdt_get_tree(struct fs_context *fc)
{
struct rdt_fs_context *ctx = rdt_fc2context(fc);
+ unsigned long flags = RFTYPE_CTRL_BASE;
struct rdt_domain *dom;
struct rdt_resource *r;
int ret;
@@ -2563,7 +2564,10 @@ static int rdt_get_tree(struct fs_context *fc)
closid_init();
- ret = rdtgroup_add_files(rdtgroup_default.kn, RFTYPE_CTRL_BASE);
+ if (rdt_mon_capable)
+ flags |= RFTYPE_MON;
+
+ ret = rdtgroup_add_files(rdtgroup_default.kn, flags);
if (ret)
goto out_schemata_free;
@@ -3253,8 +3257,8 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
enum rdt_group_type rtype, struct rdtgroup **r)
{
struct rdtgroup *prdtgrp, *rdtgrp;
+ unsigned long files = 0;
struct kernfs_node *kn;
- uint files = 0;
int ret;
prdtgrp = rdtgroup_kn_lock_live(parent_kn);
@@ -3306,10 +3310,13 @@ static int mkdir_rdt_prepare(struct kernfs_node *parent_kn,
goto out_destroy;
}
- if (rtype == RDTCTRL_GROUP)
+ if (rtype == RDTCTRL_GROUP) {
files = RFTYPE_BASE | RFTYPE_CTRL;
- else
+ if (rdt_mon_capable)
+ files |= RFTYPE_MON;
+ } else {
files = RFTYPE_BASE | RFTYPE_MON;
+ }
ret = rdtgroup_add_files(kn, files);
if (ret) {
--
2.34.1
Powered by blists - more mailing lists