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android_kernel_xiaomi_sm7250/arch/riscv/kernel
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Thomas Gleixner 6bd98f8259 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 13:39:48 +02:00
..
vdso riscv: fix vdso build with lld 2020-05-20 08:18:39 +02:00
.gitignore RISC-V: Build Infrastructure 2017-09-26 15:26:49 -07:00
asm-offsets.c RISC-V: Task implementation 2017-09-26 15:26:46 -07:00
cacheinfo.c drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION() 2021-09-26 13:39:48 +02:00
cpu.c
cpufeature.c RISC-V: User-facing API 2017-09-26 15:26:48 -07:00
entry.S riscv,entry: fix misaligned base for excp_vect_table 2021-04-16 11:49:30 +02:00
ftrace.c RISC-V: Take text_mutex in ftrace_init_nop() 2020-10-01 13:14:50 +02:00
head.S RISC-V: Add the directive for alignment of stvec's value 2018-08-13 08:31:31 -07:00
irq.c clocksource: new RISC-V SBI timer driver 2018-08-13 08:31:31 -07:00
Makefile perf: riscv: preliminary RISC-V support 2018-06-04 14:02:01 -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 10:59:49 +02:00
module-sections.c RISC-V: Add section of GOT.PLT for kernel module 2018-04-02 20:00:54 -07:00
module.c riscv: avoid the PIC offset of static percpu data in module beyond 2G limits 2020-03-25 08:06:07 +01:00
module.lds RISC-V: Add section of GOT.PLT for kernel module 2018-04-02 20:00:54 -07:00
perf_event.c RISC-V: Fix !CONFIG_SMP compilation error 2018-08-13 08:31:32 -07:00
process.c Merge branch 'work.whack-a-mole' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2018-01-31 19:18:12 -08:00
ptrace.c riscv: fix trace_sys_exit hook 2019-02-20 10:25:40 +01:00
reset.c
riscv_ksyms.c riscv: split the declaration of __copy_user 2018-06-09 12:34:31 -07:00
setup.c riscv: set max_pfn to the PFN of the last page 2020-05-27 17:37:28 +02:00
signal.c RISC-V: User-facing API 2017-09-26 15:26:48 -07:00
smp.c RISC-V: simplify software interrupt / IPI code 2018-08-13 08:31:30 -07:00
smpboot.c clocksource: new RISC-V SBI timer driver 2018-08-13 08:31:31 -07:00
stacktrace.c riscv: stacktrace: Fix undefined reference to `walk_stackframe' 2020-06-03 08:19:30 +02:00
sys_riscv.c RISC-V: Don't allow write+exec only page mapping request in mmap 2020-06-30 23:17:15 -04:00
syscall_table.c RISC-V: Make __NR_riscv_flush_icache visible to userspace 2018-01-07 15:14:37 -08:00
time.c riscv: Fix kernel time_init() 2021-01-27 11:05:37 +01:00
traps.c RISC-V: Don't increment sepc after breakpoint. 2018-08-13 08:31:30 -07:00
vdso.c riscv: remove redundant unlikely() 2018-01-30 19:12:06 -08:00
vmlinux.lds.S RISC-V: Build Infrastructure 2017-09-26 15:26:49 -07:00