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Thomas Gleixner 2f7bfc07e3 drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 
[ Upstream commit 4b92d4add5f6dcf21275185c997d6ecb800054cd ]

DEFINE_SMP_CALL_CACHE_FUNCTION() was usefel before the CPU hotplug rework
to ensure that the cache related functions are called on the upcoming CPU
because the notifier itself could run on any online CPU.

The hotplug state machine guarantees that the callbacks are invoked on the
upcoming CPU. So there is no need to have this SMP function call
obfuscation. That indirection was missed when the hotplug notifiers were
converted.

This also solves the problem of ARM64 init_cache_level() invoking ACPI
functions which take a semaphore in that context. That's invalid as SMP
function calls run with interrupts disabled. Running it just from the
callback in context of the CPU hotplug thread solves this.

Fixes: 8571890e15 ("arm64: Add support for ACPI based firmware tables")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Will Deacon <will@kernel.org>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: https://lore.kernel.org/r/871r69ersb.ffs@tglx
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2021-09-26 14:07:10 +02:00
..
vdso riscv: fix vdso build with lld 2020-05-20 08:20:13 +02:00
.gitignore RISC-V: Build Infrastructure 2017-09-26 15:26:49 -07:00
Makefile riscv: Add support for perf registers sampling 2019-09-05 00:48:58 -07:00
asm-offsets.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
cacheinfo.c drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 2021-09-26 14:07:10 +02:00
cpu.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00
cpufeature.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
entry.S riscv,entry: fix misaligned base for excp_vect_table 2021-04-16 11:46:38 +02:00
fpu.S riscv: Using CSR numbers to access CSRs 2019-08-30 11:04:19 -07:00
ftrace.c RISC-V: Take text_mutex in ftrace_init_nop() 2020-10-01 13:18:14 +02:00
head.S riscv: Set text_offset correctly for M-Mode 2020-11-18 19:20:25 +01:00
head.h riscv: add prototypes for assembly language functions from head.S 2019-10-28 00:46:00 -07:00
irq.c riscv: for C functions called only from assembly, mark with __visible 2019-10-28 00:46:02 -07:00
mcount-dyn.S riscv/ftrace: Add DYNAMIC_FTRACE_WITH_REGS support 2018-04-02 19:59:13 -07:00
mcount.S riscv: Workaround mcount name prior to clang-13 2021-05-22 11:38:29 +02:00
module-sections.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
module.c riscv: avoid the PIC offset of static percpu data in module beyond 2G limits 2020-03-25 08:25:48 +01:00
module.lds RISC-V: Add section of GOT.PLT for kernel module 2018-04-02 20:00:54 -07:00
perf_callchain.c riscv: Add perf callchain support 2019-09-04 12:43:00 -07:00
perf_event.c RISC-V: Access CSRs using CSR numbers 2019-05-16 20:42:11 -07:00
perf_regs.c riscv: Add support for perf registers sampling 2019-09-05 00:48:58 -07:00
process.c riscv: Implement copy_thread_tls 2020-01-14 20:08:34 +01:00
ptrace.c riscv: for C functions called only from assembly, mark with __visible 2019-10-28 00:46:02 -07:00
reset.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
riscv_ksyms.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
setup.c riscv: add prototypes for assembly language functions from head.S 2019-10-28 00:46:00 -07:00
signal.c riscv: for C functions called only from assembly, mark with __visible 2019-10-28 00:46:02 -07:00
smp.c RISC-V: Fix error code returned by riscv_hartid_to_cpuid() 2021-05-19 10:08:26 +02:00
smpboot.c riscv: for C functions called only from assembly, mark with __visible 2019-10-28 00:46:02 -07:00
stacktrace.c riscv: stacktrace: Fix undefined reference to `walk_stackframe' 2020-06-03 08:21:13 +02:00
sys_riscv.c RISC-V: Don't allow write+exec only page mapping request in mmap 2020-06-30 15:37:06 -04:00
syscall_table.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
time.c riscv: Fix kernel time_init() 2021-01-27 11:47:43 +01:00
traps.c riscv: for C functions called only from assembly, mark with __visible 2019-10-28 00:46:02 -07:00
vdso.c riscv: add missing header file includes 2019-10-28 00:46:01 -07:00
vmlinux.lds.S treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 286 2019-06-05 17:36:37 +02:00