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x86/nmi: Use a macro to initialize NMI descriptors

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The NMI descriptors for each NMI type are stored in an array. However,
they are currently initialized using raw numbers, which makes it
difficult to understand the code.

Introduce a macro to initialize the NMI descriptors using the NMI type
enum values to make the code more readable.

No functional change intended.

Signed-off-by: Sohil Mehta <sohil.mehta@intel.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Kai Huang <kai.huang@intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Nikolay Borisov <nik.borisov@suse.com>
Link: https://lore.kernel.org/r/20250327234629.3953536-4-sohil.mehta@intel.com
This commit is contained in:
Sohil Mehta
2025-03-27 23:46:23 +00:00
committed by Ingo Molnar
parent 78a0323506
commit 4a8fba4be8
1 changed files with 11 additions and 20 deletions
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31
arch/x86/kernel/nmi.c
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@@ -49,27 +49,20 @@ struct nmi_desc {
struct list_head head;
};
static struct nmi_desc nmi_desc[NMI_MAX] =
{
{
.lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[0].lock),
.head = LIST_HEAD_INIT(nmi_desc[0].head),
},
{
.lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[1].lock),
.head = LIST_HEAD_INIT(nmi_desc[1].head),
},
{
.lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[2].lock),
.head = LIST_HEAD_INIT(nmi_desc[2].head),
},
{
.lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[3].lock),
.head = LIST_HEAD_INIT(nmi_desc[3].head),
},
#define NMI_DESC_INIT(type) { \
.lock = __RAW_SPIN_LOCK_UNLOCKED(&nmi_desc[type].lock), \
.head = LIST_HEAD_INIT(nmi_desc[type].head), \
}
static struct nmi_desc nmi_desc[NMI_MAX] = {
NMI_DESC_INIT(NMI_LOCAL),
NMI_DESC_INIT(NMI_UNKNOWN),
NMI_DESC_INIT(NMI_SERR),
NMI_DESC_INIT(NMI_IO_CHECK),
};
#define nmi_to_desc(type) (&nmi_desc[type])
struct nmi_stats {
unsigned int normal;
unsigned int unknown;
@@ -107,8 +100,6 @@ static int __init setup_unknown_nmi_panic(char *str)
}
__setup("unknown_nmi_panic", setup_unknown_nmi_panic);
#define nmi_to_desc(type) (&nmi_desc[type])
static u64 nmi_longest_ns = 1 * NSEC_PER_MSEC;
static int __init nmi_warning_debugfs(void)