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linux/arch/riscv/kernel
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Conor Dooley 2a8db5ec4a
RISC-V: Don't check text_mutex during stop_machine 
We're currently using stop_machine() to update ftrace & kprobes, which
means that the thread that takes text_mutex during may not be the same
as the thread that eventually patches the code.  This isn't actually a
race because the lock is still held (preventing any other concurrent
accesses) and there is only one thread running during stop_machine(),
but it does trigger a lockdep failure.

This patch just elides the lockdep check during stop_machine.

Fixes: c15ac4fd60d5 ("riscv/ftrace: Add dynamic function tracer support")
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Reported-by: Changbin Du <changbin.du@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20230303143754.4005217-1-conor.dooley@microchip.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-03-09 14:58:51 -08:00
..
compat_vdso
RISC-V: Stop emitting attributes
2023-03-06 15:55:25 -08:00
probes
RISC-V Patches for the 6.3 Merge Window, Part 1
2023-02-25 11:14:08 -08:00
vdso
riscv: alternative: patch alternatives in the vDSO
2023-01-31 23:29:42 -08:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
alternative.c
riscv: alternative: proceed one more instruction for auipc/jalr pair
2023-02-21 17:21:50 -08:00
asm-offsets.c
RISC-V: Add arch functions for non-retentive suspend entry/exit
2022-03-10 09:29:31 -08:00
cacheinfo.c
arch_topology: Build cacheinfo from primary CPU
2023-01-18 09:58:40 +00:00
compat_signal.c
riscv: compat: signal: Add rt_frame implementation
2022-05-17 16:37:21 -07:00
compat_syscall_table.c
riscv: compat: syscall: Add compat_sys_call_table implementation
2022-04-26 13:36:25 -07:00
cpu_ops_sbi.c
riscv: cpu_ops_sbi: Add 64bit hartid support on RV64
2022-07-19 16:38:58 -07:00
cpu_ops_spinwait.c
RISC-V: cpu_ops_spinwait.c should include head.h
2022-08-11 13:24:16 -07:00
cpu_ops.c
riscv: ensure cpu_ops_sbi is declared
2022-08-11 13:46:51 -07:00
cpu-hotplug.c
riscv: cpu-hotplug: clear cpu from numa map when teardown
2022-02-10 09:16:50 -08:00
cpu.c
RISC-V: fix ordering of Zbb extension
2023-02-21 17:21:21 -08:00
cpufeature.c
RISC-V: take text_mutex during alternative patching
2023-02-21 17:21:33 -08:00
crash_core.c
RISC-V: Add arch_crash_save_vmcoreinfo support
2022-12-02 16:48:22 -08:00
crash_dump.c
vmcore: convert copy_oldmem_page() to take an iov_iter
2022-04-29 14:37:59 -07:00
crash_save_regs.S
RISC-V: Fixup get incorrect user mode PC for kernel mode regs
2022-08-11 08:54:40 -07:00
efi-header.S
RISC-V: Add PE/COFF header for EFI stub
2020-10-02 14:31:16 -07:00
efi.c
efi: Discover BTI support in runtime services regions
2023-02-04 09:19:02 +01:00
elf_kexec.c
RISC-V: kexec: Fix memory leak of elf header buffer
2022-12-05 10:59:58 -08:00
entry.S
Merge patch series "RISC-V: Align the shadow stack"
2022-12-12 09:30:37 -08:00
fpu.S
riscv: abstract out CSR names for supervisor vs machine mode
2019-11-05 09:20:42 -08:00
ftrace.c
RISC-V: Don't check text_mutex during stop_machine
2023-03-09 14:58:51 -08:00
head.h
RISC-V: Move spinwait booting method to its own config
2022-01-20 09:27:16 -08:00
head.S
riscv: fix -Wundef warning for CONFIG_RISCV_BOOT_SPINWAIT
2023-01-19 16:37:11 -08:00
image-vars.h
efi: libstub: Provide local implementations of strrchr() and memchr()
2022-11-09 12:42:02 +01:00
irq.c
RISC-V: Remove do_IRQ() function
2020-06-09 19:11:24 -07:00
jump_label.c
jump_label: make initial NOP patching the special case
2022-06-24 09:48:55 +02:00
kexec_relocate.S
riscv: Don't use va_pa_offset on kdump
2022-01-09 10:38:06 -08:00
kgdb.c
RISC-V: rename parse_asm.h to insn.h
2022-12-29 06:59:47 -08:00
machine_kexec_file.c
RISC-V: Add kexec_file support
2022-05-19 12:14:18 -07:00
machine_kexec.c
riscv: kexec: Fixup crash_smp_send_stop without multi cores
2022-11-29 21:50:59 -08:00
Makefile
RISC-V: Add arch_crash_save_vmcoreinfo support
2022-12-02 16:48:22 -08:00
mcount-dyn.S
riscv: ftrace: Reduce the detour code size to half
2023-02-15 10:58:21 -08:00
mcount.S
RISC-V: preserve a1 in mcount
2022-12-02 10:04:37 -08:00
module-sections.c
riscv: add missing header file includes
2019-10-28 00:46:01 -07:00
module.c
riscv: module: Add ADD16 and SUB16 rela types
2023-01-31 23:29:40 -08:00
patch.c
RISC-V: Don't check text_mutex during stop_machine
2023-03-09 14:58:51 -08:00
perf_callchain.c
riscv: Fix fill_callchain return value
2022-03-30 23:01:42 -07:00
perf_regs.c
perf/arch: Remove perf_sample_data::regs_user_copy
2020-11-09 18:12:34 +01:00
process.c
arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled
2023-01-13 11:48:15 +01:00
ptrace.c
riscv: compat: ptrace: Add compat_arch_ptrace implement
2022-05-17 16:37:22 -07:00
reset.c
riscv: Use do_kernel_power_off()
2022-05-19 19:30:30 +02:00
riscv_ksyms.c
RISC-V: add infrastructure to allow different str* implementations
2023-01-31 11:43:23 -08:00
sbi.c
RISC-V: Export sbi_get_mvendorid() and friends
2022-12-07 09:17:38 +05:30
setup.c
riscv: move riscv_noncoherent_supported() out of ZICBOM probe
2023-01-31 23:29:33 -08:00
signal.c
RISC-V: Fix unannoted hardirqs-on in return to userspace slow-path
2022-12-08 15:31:41 -08:00
smp.c
riscv: kexec: Fixup crash_smp_send_stop without multi cores
2022-11-29 21:50:59 -08:00
smpboot.c
riscv: Move call to init_cpu_topology() to later initialization stage
2023-01-25 07:20:00 -08:00
soc.c
riscv: Fix builtin DTB handling
2021-01-07 19:00:50 -08:00
stacktrace.c
riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode
2023-03-09 14:50:35 -08:00
suspend_entry.S
RISC-V: Split out the XIP fixups into their own file
2022-05-25 14:43:33 -07:00
suspend.c
RISC-V: Add arch functions for non-retentive suspend entry/exit
2022-03-10 09:29:31 -08:00
sys_riscv.c
riscv: Allow PROT_WRITE-only mmap()
2022-09-22 09:44:59 -07:00
syscall_table.c
riscv/vdso: Refactor asm/vdso.h
2021-10-02 13:42:23 -07:00
time.c
clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback
2023-02-13 13:10:17 +01:00
trace_irq.c
riscv: fix oops caused by irqsoff latency tracer
2022-02-24 20:30:30 -08:00
trace_irq.h
riscv: fix oops caused by irqsoff latency tracer
2022-02-24 20:30:30 -08:00
traps_misaligned.c
riscv: traps_misaligned: do not duplicate stringify
2022-08-11 08:56:53 -07:00
traps.c
Merge patch series "riscv: Dump faulting instructions in oops handler"
2023-02-21 17:21:51 -08:00
vdso.c
RISC-V Patches for the 6.3 Merge Window, Part 1
2023-02-25 11:14:08 -08:00
vmlinux-xip.lds.S
objtool/idle: Validate __cpuidle code as noinstr
2023-01-13 11:48:15 +01:00
vmlinux.lds.S
RISC-V Patches for the 6.3 Merge Window, Part 1
2023-02-25 11:14:08 -08:00