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Zong Li 8a732c8ea5 riscv: add CALLER_ADDRx support 
commit 680341382d upstream.

CALLER_ADDRx returns caller's address at specified level, they are used
for several tracers. These macros eventually use
__builtin_return_address(n) to get the caller's address if arch doesn't
define their own implementation.

In RISC-V, __builtin_return_address(n) only works when n == 0, we need
to walk the stack frame to get the caller's address at specified level.

data.level started from 'level + 3' due to the call flow of getting
caller's address in RISC-V implementation. If we don't have additional
three iteration, the level is corresponding to follows:

callsite -> return_address -> arch_stack_walk -> walk_stackframe
|           |                 |                  |
level 3     level 2           level 1            level 0

Fixes: 10626c32e3 ("riscv/ftrace: Add basic support")
Cc: stable@vger.kernel.org
Reviewed-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Signed-off-by: Zong Li <zong.li@sifive.com>
Link: https://lore.kernel.org/r/20240202015102.26251-1-zong.li@sifive.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-03-18 12:51:50 +00:00
..
compat_vdso
riscv: Handle zicsr/zifencei issue between gcc and binutils
2023-08-16 07:39:38 -07:00
pi
riscv: Fix an off-by-one in get_early_cmdline()
2024-01-31 16:18:48 -08:00
probes
riscv: kprobes: allow writing to x0
2023-11-28 17:20:13 +00:00
vdso
RISC-V: hwprobe: Fix vDSO SIGSEGV
2023-11-28 17:19:49 +00:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
acpi.c
RISC-V: ACPI: Fix acpi_os_ioremap to return iomem address
2023-08-02 13:49:43 -07:00
alternative.c
Merge patch series "Add non-coherent DMA support for AX45MP"
2023-09-08 11:24:34 -07:00
asm-offsets.c
riscv: VMAP_STACK overflow detection thread-safe
2023-11-28 17:19:47 +00:00
cacheinfo.c
Merge tag 'riscv-for-linus-6.4-mw1' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
2023-04-28 16:55:39 -07:00
cfi.c
riscv: Add CFI error handling
2023-08-23 14:16:39 -07:00
compat_signal.c
riscv: compat: signal: Add rt_frame implementation
2022-05-17 16:37:21 -07:00
compat_syscall_table.c
riscv: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
copy-unaligned.h
RISC-V: Probe for unaligned access speed
2023-09-01 09:06:25 -07:00
copy-unaligned.S
RISC-V: Probe for unaligned access speed
2023-09-01 09:06:25 -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
RISC-V: Align SBI probe implementation with spec
2023-04-29 13:04:50 -07:00
cpu-hotplug.c
riscv: Switch to hotplug core state synchronization
2023-05-15 13:44:59 +02:00
cpu.c
RISC-V: Don't fail in riscv_of_parent_hartid() for disabled HARTs
2023-11-20 11:59:37 +01:00
cpufeature.c
RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs
2024-03-18 12:51:45 +00:00
crash_core.c
kexec: drop dependency on ARCH_SUPPORTS_KEXEC from CRASH_DUMP
2023-12-20 17:02:03 +01:00
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
riscv: Prepare EFI header for relocatable kernels
2023-04-19 07:46:28 -07:00
efi.c
efi: Discover BTI support in runtime services regions
2023-02-04 09:19:02 +01:00
elf_kexec.c
riscv: kexec: Align the kexeced kernel entry
2023-09-12 13:58:39 -07:00
entry.S
riscv: put interrupt entries into .irqentry.text
2023-11-28 17:20:13 +00:00
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
riscv: entry: Convert to generic entry
2023-03-23 08:47:00 -07:00
head.S
riscv: Make XIP bootable again
2024-02-05 20:14:31 +00:00
hibernate-asm.S
riscv: hibernation: Remove duplicate call of suspend_restore_csrs
2023-06-19 09:27:57 -07:00
hibernate.c
riscv: hibernate: remove WARN_ON in save_processor_state
2023-06-23 10:06:22 -07:00
image-vars.h
riscv: libstub: Implement KASLR by using generic functions
2023-09-05 19:49:31 -07:00
irq.c
RISC-V: Fix wrong use of CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK
2023-10-12 11:34:16 -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
riscv: add CALLER_ADDRx support
2024-03-18 12:51:50 +00:00
mcount-dyn.S
riscv: entry: Consolidate general regs saving/restoring
2023-03-23 08:47:03 -07:00
mcount.S
riscv: Add ftrace_stub_graph
2023-08-23 14:16:38 -07:00
module-sections.c
riscv: add missing header file includes
2019-10-28 00:46:01 -07:00
module.c
riscv: Fix module_alloc() that did not reset the linear mapping permissions
2024-01-25 15:35:50 -08:00
patch.c
riscv: Check if the code to patch lies in the exit section
2024-01-25 15:35:50 -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
riscv: Add prctl controls for userspace vector management
2023-06-08 07:16:53 -07:00
ptrace.c
RISC-V: Add ptrace support for vectors
2023-09-01 13:05:38 -07:00
reset.c
riscv: Use do_kernel_power_off()
2022-05-19 19:30:30 +02:00
return_address.c
riscv: add CALLER_ADDRx support
2024-03-18 12:51:50 +00:00
riscv_ksyms.c
RISC-V: add infrastructure to allow different str* implementations
2023-01-31 11:43:23 -08:00
sbi-ipi.c
RISC-V: Allow marking IPIs as suitable for remote FENCEs
2023-04-08 11:26:24 +01:00
sbi.c
riscv: Make __flush_tlb_range() loop over pte instead of flushing the whole tlb
2024-02-16 19:10:52 +01:00
setup.c
riscv: kdump: fix crashkernel reserving problem on RISC-V
2023-10-12 11:34:09 -07:00
signal.c
riscv: signal: fix sigaltstack frame size checking
2023-10-12 05:38:40 -07:00
smp.c
riscv: Fix CPU feature detection with SMP disabled
2023-08-08 15:28:25 -07:00
smpboot.c
RISC-V: alternative: Remove feature_probe_func
2023-09-01 09:06:26 -07:00
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
riscv: Add types to indirectly called assembly functions
2023-08-23 14:16:37 -07:00
suspend.c
RISC-V: Change suspend_save_csrs and suspend_restore_csrs to public function
2023-04-29 11:25:10 -07:00
sys_riscv.c
riscv: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
syscall_table.c
riscv: Implement syscall wrappers
2023-08-23 14:16:36 -07:00
time.c
RISC-V: time.c: Add ACPI support for time_init()
2023-06-01 08:45:13 -07:00
traps_misaligned.c
riscv: fix misaligned access handling of C.SWSP and C.SDSP
2023-12-13 18:45:19 +01:00
traps.c
riscv: VMAP_STACK overflow detection thread-safe
2023-11-28 17:19:47 +00:00
vdso.c
riscv: vdso: include vdso/vsyscall.h for vdso_data
2023-07-04 07:54:41 -07:00
vector.c
riscv: vector: clear V-reg in the first-use trap
2023-07-01 07:38:21 -07:00
vmlinux-xip.lds.S
riscv: Check if the code to patch lies in the exit section
2024-01-25 15:35:50 -08:00
vmlinux.lds.S
riscv: Check if the code to patch lies in the exit section
2024-01-25 15:35:50 -08:00