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authorShaohua Li <shli@fb.com>2016-12-02 14:21:06 -0800
committerThomas Gleixner <tglx@linutronix.de>2016-12-09 14:12:18 +0100
commit76ae054c69a745ded388fc4ae70422d74c5bc77d (patch)
tree38ea6180a58c34c2b013f907d3c665a1699430f0 /arch
parent74fcdae1a7fdf30de5413ccc1eca271415d01124 (diff)
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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 <shli@fb.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Link: http://lkml.kernel.org/r/7dce7c1886ac9289442d254ea18322c92bd968da.1480717072.git.shli@fb.com Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/cpu/intel_rdt_rdtgroup.c12
1 files 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 1afd3f393501..8af04afdfcb9 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)