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linux/drivers/acpi/apei
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pengdonglin c7bc7e9070 ACPI: APEI: Remove redundant rcu_read_lock/unlock() under spinlock 
Since commit a8bb74acd8 ("rcu: Consolidate RCU-sched update-side
function definitions") there is no difference between rcu_read_lock(),
rcu_read_lock_bh() and rcu_read_lock_sched() in terms of RCU read
section and the relevant grace period. That means that spin_lock(),
which implies rcu_read_lock_sched(), also implies rcu_read_lock().

There is no need no explicitly start a RCU read section if one has
already been started implicitly by spin_lock().

Simplify the code and remove the inner rcu_read_lock() invocation.

Signed-off-by: pengdonglin <pengdonglin@xiaomi.com>
Signed-off-by: pengdonglin <dolinux.peng@gmail.com>
Reviewed-by: Hanjun Guo <guohanjun@huawei.com>
Link: https://patch.msgid.link/20250916044735.2316171-2-dolinux.peng@gmail.com
[ rjw: Subject adjustment ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
History 2025-09-28 12:31:54 +02:00
..
apei-base.c move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
apei-internal.h ACPI: APEI: EINJ: Enable the discovery of EINJv2 capabilities 2025-06-18 20:49:31 +02:00
bert.c ACPI: APEI: mark bert_disable as __initdata 2023-06-12 19:23:25 +02:00
einj-core.c ACPI: APEI: EINJ: Allow more types of addresses except MMIO 2025-09-15 21:32:29 +02:00
einj-cxl.c ACPI: APEI: EINJ: Enable the discovery of EINJv2 capabilities 2025-06-18 20:49:31 +02:00
erst-dbg.c ACPI: APEI: Remove redundant assignments in erst_dbg_{ioctl|write}() 2025-09-15 21:21:57 +02:00
erst.c ACPI: APEI: Use ERST timeout for slow devices 2023-10-24 20:50:17 +02:00
ghes.c ACPI: APEI: Remove redundant rcu_read_lock/unlock() under spinlock 2025-09-28 12:31:54 +02:00
hest.c ACPI: APEI: Skip initialization of GHES_ASSIST structures for Machine Check Architecture 2024-02-29 18:34:40 +01:00
Kconfig firmware: SDEI: Allow sdei initialization without ACPI_APEI_GHES 2025-05-08 13:35:22 +01:00
Makefile EINJ: Add CXL error type support 2024-03-12 23:08:29 -07:00