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Subject[tip:ras/core] x86/mce: Convert 'struct mca_config' bools to a bitfield
Commit-ID:  09933946643bcc8e0a9bd4ede192ed854e22db8f
Gitweb: https://git.kernel.org/tip/09933946643bcc8e0a9bd4ede192ed854e22db8f
Author: Borislav Petkov <bp@suse.de>
AuthorDate: Wed, 21 Feb 2018 11:18:54 +0100
Committer: Ingo Molnar <mingo@kernel.org>
CommitDate: Wed, 21 Feb 2018 17:00:53 +0100

x86/mce: Convert 'struct mca_config' bools to a bitfield

... to save space when future flags are added.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/20180221101900.10326-3-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
arch/x86/kernel/cpu/mcheck/mce-internal.h | 13 ++++++++-----
arch/x86/kernel/cpu/mcheck/mce.c | 16 ++++++++--------
2 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h
index ed3c5ae..374d1aa 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-internal.h
+++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h
@@ -131,12 +131,15 @@ static inline void mce_unmap_kpfn(unsigned long pfn) {}
struct mca_config {
bool dont_log_ce;
bool cmci_disabled;
- bool lmce_disabled;
bool ignore_ce;
- bool disabled;
- bool ser;
- bool recovery;
- bool bios_cmci_threshold;
+
+ __u64 lmce_disabled : 1,
+ disabled : 1,
+ ser : 1,
+ recovery : 1,
+ bios_cmci_threshold : 1,
+ __reserved : 59;
+
u8 banks;
s8 bootlog;
int tolerant;
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 8ff94d1..db5b1e4 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -1511,7 +1511,7 @@ static int __mcheck_cpu_cap_init(void)
mca_cfg.rip_msr = MSR_IA32_MCG_EIP;

if (cap & MCG_SER_P)
- mca_cfg.ser = true;
+ mca_cfg.ser = 1;

return 0;
}
@@ -1819,12 +1819,12 @@ void mcheck_cpu_init(struct cpuinfo_x86 *c)
return;

if (__mcheck_cpu_cap_init() < 0 || __mcheck_cpu_apply_quirks(c) < 0) {
- mca_cfg.disabled = true;
+ mca_cfg.disabled = 1;
return;
}

if (mce_gen_pool_init()) {
- mca_cfg.disabled = true;
+ mca_cfg.disabled = 1;
pr_emerg("Couldn't allocate MCE records pool!\n");
return;
}
@@ -1902,11 +1902,11 @@ static int __init mcheck_enable(char *str)
if (*str == '=')
str++;
if (!strcmp(str, "off"))
- cfg->disabled = true;
+ cfg->disabled = 1;
else if (!strcmp(str, "no_cmci"))
cfg->cmci_disabled = true;
else if (!strcmp(str, "no_lmce"))
- cfg->lmce_disabled = true;
+ cfg->lmce_disabled = 1;
else if (!strcmp(str, "dont_log_ce"))
cfg->dont_log_ce = true;
else if (!strcmp(str, "ignore_ce"))
@@ -1914,9 +1914,9 @@ static int __init mcheck_enable(char *str)
else if (!strcmp(str, "bootlog") || !strcmp(str, "nobootlog"))
cfg->bootlog = (str[0] == 'b');
else if (!strcmp(str, "bios_cmci_threshold"))
- cfg->bios_cmci_threshold = true;
+ cfg->bios_cmci_threshold = 1;
else if (!strcmp(str, "recovery"))
- cfg->recovery = true;
+ cfg->recovery = 1;
else if (isdigit(str[0])) {
if (get_option(&str, &cfg->tolerant) == 2)
get_option(&str, &(cfg->monarch_timeout));
@@ -2381,7 +2381,7 @@ device_initcall_sync(mcheck_init_device);
*/
static int __init mcheck_disable(char *str)
{
- mca_cfg.disabled = true;
+ mca_cfg.disabled = 1;
return 1;
}
__setup("nomce", mcheck_disable);
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