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x86/intel_rdt: Implement show_options() for resctrlfs

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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>
This commit is contained in:
Shaohua Li 2016-12-02 14:21:06 -08:00 committed by Thomas Gleixner
parent 74fcdae1a7
commit 76ae054c69
1 changed files with 10 additions and 2 deletions
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12
arch/x86/kernel/cpu/intel_rdt_rdtgroup.c
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@ -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)