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s390/pai: Calculate size of reserved PAI extension control block area

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The PAI extension 1 control block area is 512 bytes in total.
It currently contains three address pointer which refer to counter
memory blocks followed by a reserved area.
Calculate the reserved area instead of hardcoding its size. This
makes the code more readable and maintainable.
No functional chance.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: Jan Polensky <japo@linux.ibm.com>
Reviewed-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Thomas Richter 2025-11-06 14:23:33 +01:00 committed by Heiko Carstens
parent b60d126c8e
commit d17901e8e8
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kernel/perf_pai.c
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@ -48,7 +48,7 @@ struct paiext_cb { /* PAI extension 1 control block */
u64 header; /* Not used */
u64 reserved1;
u64 acc; /* Addr to analytics counter control block */
u8 reserved2[488];
u8 reserved2[PAIE1_CTRBLOCK_SZ - 3 * sizeof(u64)];
} __packed;
struct pai_map {