diff options
| author | Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com> | 2022-02-25 13:33:40 -0600 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-04-05 21:23:34 +0200 |
| commit | 9f1b19b977ee3cbd3fe9135ff63dbf221eac1d6a (patch) | |
| tree | 6ac31171f6a67e9277cf54ef460d403137b6e0f8 /arch/x86/kernel/cpu/mce/core.c | |
| parent | 3123109284176b1532874591f7c81f3837bbdc17 (diff) | |
x86/mce: Avoid unnecessary padding in struct mce_bank
Convert struct mce_bank member "init" from bool to a bitfield to get rid
of unnecessary padding.
$ pahole -C mce_bank arch/x86/kernel/cpu/mce/core.o
before:
/* size: 16, cachelines: 1, members: 2 */
/* padding: 7 */
/* last cacheline: 16 bytes */
after:
/* size: 16, cachelines: 1, members: 3 */
/* last cacheline: 16 bytes */
No functional changes.
Signed-off-by: Smita Koralahalli <Smita.KoralahalliChannabasappa@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20220225193342.215780-2-Smita.KoralahalliChannabasappa@amd.com
Diffstat (limited to 'arch/x86/kernel/cpu/mce/core.c')
| -rw-r--r-- | arch/x86/kernel/cpu/mce/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/mce/core.c b/arch/x86/kernel/cpu/mce/core.c index 981496e6bc0e..d775fcd74e98 100644 --- a/arch/x86/kernel/cpu/mce/core.c +++ b/arch/x86/kernel/cpu/mce/core.c @@ -69,7 +69,9 @@ DEFINE_PER_CPU_READ_MOSTLY(unsigned int, mce_num_banks); struct mce_bank { u64 ctl; /* subevents to enable */ - bool init; /* initialise bank? */ + + __u64 init : 1, /* initialise bank? */ + __reserved_1 : 63; }; static DEFINE_PER_CPU_READ_MOSTLY(struct mce_bank[MAX_NR_BANKS], mce_banks_array); |