ACPI: APEI: GHES: Improve ghes_notify_sea() status check

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Performance testing on ARMv8 systems shows significant overhead in error
status handling in SEA error handling.

- ghes_peek_estatus(): 8,138.3 ns (21,160 cycles).
- ghes_clear_estatus(): 2,038.3 ns (5,300 cycles).

Apply the same optimization used in ghes_notify_nmi() to
ghes_notify_sea() by checking for active errors before processing,

Tested-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Shuai Xue <xueshuai@linux.alibaba.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Link: https://patch.msgid.link/20260112032239.30023-4-xueshuai@linux.alibaba.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Shuai Xue 2026-01-12 11:22:39 +08:00 • committed by Rafael J. Wysocki

parent feb2d38013

commit b73cf7eaa6

1 changed files with 17 additions and 3 deletions

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drivers/acpi/apei/ghes.c

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