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
alternative.c	riscv: alternative: proceed one more instruction for auipc/jalr pair	2023-02-21 17:21:50 -08:00
asm-offsets.c
cacheinfo.c	arch_topology: Build cacheinfo from primary CPU	2023-01-18 09:58:40 +00:00
compat_signal.c
compat_syscall_table.c
cpu_ops_sbi.c
cpu_ops_spinwait.c
cpu_ops.c
cpu-hotplug.c
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
crash_save_regs.S
efi-header.S
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
ftrace.c	RISC-V: Don't check text_mutex during stop_machine	2023-03-09 14:58:51 -08:00
head.h
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
jump_label.c
kexec_relocate.S
kgdb.c	RISC-V: rename parse_asm.h to insn.h	2022-12-29 06:59:47 -08:00
machine_kexec_file.c
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
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
perf_regs.c
process.c	arch/idle: Change arch_cpu_idle() behavior: always exit with IRQs disabled	2023-01-13 11:48:15 +01:00
ptrace.c
reset.c
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
stacktrace.c	riscv: Use READ_ONCE_NOCHECK in imprecise unwinding stack mode	2023-03-09 14:50:35 -08:00
suspend_entry.S
suspend.c
sys_riscv.c	riscv: Allow PROT_WRITE-only mmap()	2022-09-22 09:44:59 -07:00
syscall_table.c
time.c	clocksource/drivers/riscv: Get rid of clocksource_arch_init() callback	2023-02-13 13:10:17 +01:00
trace_irq.c
trace_irq.h
traps_misaligned.c
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