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| author | Ingo Molnar <mingo@kernel.org> | 2018-12-17 18:48:25 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-12-17 18:48:25 +0100 |
| commit | 02117e42db7470e59910088b2b0ee42d581d2651 (patch) | |
| tree | 7734414b46fb72ffc708ac924f3b6b69de1f0d4c /arch/x86/kernel/cpu/intel_rdt_ctrlmondata.c | |
| parent | ba6f508d0ec4adb09f0a939af6d5e19cdfa8667d (diff) | |
| parent | 721066dfd4d5c0fee5772c777d6930d0f423b4eb (diff) | |
| download | linux-02117e42db7470e59910088b2b0ee42d581d2651.tar.gz linux-02117e42db7470e59910088b2b0ee42d581d2651.tar.bz2 linux-02117e42db7470e59910088b2b0ee42d581d2651.zip | |
Merge branch 'x86/urgent' into x86/mm, to pick up dependent fix
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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 27937458c231..efa4a519f5e5 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; } |