diff options
author | Rikard Falkeborn <rikard.falkeborn@gmail.com> | 2020-11-11 00:02:28 +0100 |
---|---|---|
committer | Borislav Petkov <bp@suse.de> | 2020-11-19 18:23:45 +0100 |
commit | 2002d2951398317d0f46e64ae6d8dd58ed541c6d (patch) | |
tree | dd28082b2122907e0e59e46ca3ee41621aa30c1a /arch/x86/kernel/cpu | |
parent | 4868a61d498af3627c3b571aa48107a845001e51 (diff) | |
download | linux-2002d2951398317d0f46e64ae6d8dd58ed541c6d.tar.bz2 |
x86/resctrl: Constify kernfs_ops
The only usage of the kf_ops field in the rftype struct is to pass
it as argument to __kernfs_create_file(), which accepts a pointer to
const. Make it a pointer to const. This makes it possible to make
rdtgroup_kf_single_ops and kf_mondata_ops const, which allows the
compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/20201110230228.801785-1-rikard.falkeborn@gmail.com
Diffstat (limited to 'arch/x86/kernel/cpu')
-rw-r--r-- | arch/x86/kernel/cpu/resctrl/internal.h | 2 | ||||
-rw-r--r-- | arch/x86/kernel/cpu/resctrl/rdtgroup.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/kernel/cpu/resctrl/internal.h b/arch/x86/kernel/cpu/resctrl/internal.h index 6cb068fcf501..5540b025880c 100644 --- a/arch/x86/kernel/cpu/resctrl/internal.h +++ b/arch/x86/kernel/cpu/resctrl/internal.h @@ -264,7 +264,7 @@ void __exit rdtgroup_exit(void); struct rftype { char *name; umode_t mode; - struct kernfs_ops *kf_ops; + const struct kernfs_ops *kf_ops; unsigned long flags; unsigned long fflags; diff --git a/arch/x86/kernel/cpu/resctrl/rdtgroup.c b/arch/x86/kernel/cpu/resctrl/rdtgroup.c index af323e2e3100..78dcbb8e0172 100644 --- a/arch/x86/kernel/cpu/resctrl/rdtgroup.c +++ b/arch/x86/kernel/cpu/resctrl/rdtgroup.c @@ -240,13 +240,13 @@ static ssize_t rdtgroup_file_write(struct kernfs_open_file *of, char *buf, return -EINVAL; } -static struct kernfs_ops rdtgroup_kf_single_ops = { +static const struct kernfs_ops rdtgroup_kf_single_ops = { .atomic_write_len = PAGE_SIZE, .write = rdtgroup_file_write, .seq_show = rdtgroup_seqfile_show, }; -static struct kernfs_ops kf_mondata_ops = { +static const struct kernfs_ops kf_mondata_ops = { .atomic_write_len = PAGE_SIZE, .seq_show = rdtgroup_mondata_show, }; |