2016-12-02 22:21:10

by Shaohua Li

Subject: [PATCH V2] x86/intel_rdt: Implement show_options() for resctrlfs

Implement show_options() callback for intel resource control filesystem
to expose the active mount options in /proc/

This applies to tip tree x86/cache branch.

Cc: Fenghua Yu <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Signed-off-by: Shaohua Li <[email protected]>
---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
index 1afd3f3..8af04af 100644
--- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
+++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
@@ -1036,9 +1036,17 @@ static int rdtgroup_rmdir(struct kernfs_node *kn)
return ret;
}

+static int rdtgroup_show_options(struct seq_file *seq, struct kernfs_root *kf)
+{
+ if (rdt_resources_all[RDT_RESOURCE_L3DATA].enabled)
+ seq_puts(seq, ",cdp");
+ return 0;
+}
+
static struct kernfs_syscall_ops rdtgroup_kf_syscall_ops = {
- .mkdir = rdtgroup_mkdir,
- .rmdir = rdtgroup_rmdir,
+ .mkdir = rdtgroup_mkdir,
+ .rmdir = rdtgroup_rmdir,
+ .show_options = rdtgroup_show_options,
};

static int __init rdtgroup_setup_root(void)
--
2.9.3

2016-12-09 13:19:19

by tip-bot for Vasyl Gomonovych

Subject: [tip:x86/cache] x86/intel_rdt: Implement show_options() for resctrlfs

Commit-ID: 76ae054c69a745ded388fc4ae70422d74c5bc77d
Gitweb: http://git.kernel.org/tip/76ae054c69a745ded388fc4ae70422d74c5bc77d
Author: Shaohua Li <[email protected]>
AuthorDate: Fri, 2 Dec 2016 14:21:06 -0800
Committer: Thomas Gleixner <[email protected]>
CommitDate: Fri, 9 Dec 2016 14:12:18 +0100

x86/intel_rdt: Implement show_options() for resctrlfs

Implement show_options() callback for intel resource control filesystem
to expose the active mount options in /proc/

Signed-off-by: Shaohua Li <[email protected]>
Cc: Fenghua Yu <[email protected]>
Link: http://lkml.kernel.org/r/7dce7c1886ac9289442d254ea18322c92bd968da.1480717072.git.shli@fb.com
Signed-off-by: Thomas Gleixner <[email protected]>

---
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
index 1afd3f3..8af04af 100644
--- a/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
+++ b/arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
@@ -1036,9 +1036,17 @@ out:
return ret;
}

+static int rdtgroup_show_options(struct seq_file *seq, struct kernfs_root *kf)
+{
+ if (rdt_resources_all[RDT_RESOURCE_L3DATA].enabled)
+ seq_puts(seq, ",cdp");
+ return 0;
+}
+
static struct kernfs_syscall_ops rdtgroup_kf_syscall_ops = {
- .mkdir = rdtgroup_mkdir,
- .rmdir = rdtgroup_rmdir,
+ .mkdir = rdtgroup_mkdir,
+ .rmdir = rdtgroup_rmdir,
+ .show_options = rdtgroup_show_options,
};

static int __init rdtgroup_setup_root(void)