diff options
| author | Luka Pivk <luka.pivk@toradex.com> | 2019-01-08 07:02:41 +0100 |
|---|---|---|
| committer | Luka Pivk <luka.pivk@toradex.com> | 2019-01-08 07:02:41 +0100 |
| commit | 43f61e8df71c474cd56b5c971096b9cf8d36cd95 (patch) | |
| tree | 0031be65fcc2fd2fd3eceeee9558b5526a19e431 /arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | |
| parent | 5656ec50dc9950db865d53306326b1a732e3738e (diff) | |
| parent | c04c050f5bf98845bfe22164b8a1503d696a6e26 (diff) | |
Merge remote-tracking branch 'remotes/origin/linux-4.19.y'toradex_4.19.y
Signed-off-by: Luka Pivk <luka.pivk@toradex.com>
Diffstat (limited to 'arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c')
| -rw-r--r-- | arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c index 0f53049719cd..627e5c809b33 100644 --- a/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c +++ b/arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c @@ -23,6 +23,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include <linux/cpu.h> #include <linux/kernfs.h> #include <linux/seq_file.h> #include <linux/slab.h> @@ -310,9 +311,11 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of, return -EINVAL; buf[nbytes - 1] = '\0'; + cpus_read_lock(); rdtgrp = rdtgroup_kn_lock_live(of->kn); if (!rdtgrp) { rdtgroup_kn_unlock(of->kn); + cpus_read_unlock(); return -ENOENT; } rdt_last_cmd_clear(); @@ -367,6 +370,7 @@ ssize_t rdtgroup_schemata_write(struct kernfs_open_file *of, out: rdtgroup_kn_unlock(of->kn); + cpus_read_unlock(); return ret ?: nbytes; } |