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linux/arch/loongarch/include/asm
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Huacai Chen d3119bc985 LoongArch: Fix callchain parse error with kernel tracepoint events 
In order to fix perf's callchain parse error for LoongArch, we implement
perf_arch_fetch_caller_regs() which fills several necessary registers
used for callchain unwinding, including sp, fp, and era. This is similar
to the following commits.

commit b3eac0265b:
("arm: perf: Fix callchain parse error with kernel tracepoint events")

commit 5b09a094f2:
("arm64: perf: Fix callchain parse error with kernel tracepoint events")

commit 9a7e8ec0d4:
("riscv: perf: Fix callchain parse error with kernel tracepoint events")

Test with commands:

 perf record -e sched:sched_switch -g --call-graph dwarf
 perf report

Without this patch:

 Children      Self  Command        Shared Object      Symbol
 ........  ........  .............  .................  ....................

 43.41%    43.41%  swapper          [unknown]          [k] 0000000000000000

 10.94%    10.94%  loong-container  [unknown]          [k] 0000000000000000
         |
         |--5.98%--0x12006ba38
         |
         |--2.56%--0x12006bb84
         |
          --2.40%--0x12006b6b8

With this patch, callchain can be parsed correctly:

 Children      Self  Command        Shared Object      Symbol
 ........  ........  .............  .................  ....................

 47.57%    47.57%  swapper          [kernel.vmlinux]   [k] __schedule
         |
         ---__schedule

 26.76%    26.76%  loong-container  [kernel.vmlinux]   [k] __schedule
         |
         |--13.78%--0x12006ba38
         |          |
         |          |--9.19%--__schedule
         |          |
         |           --4.59%--handle_syscall
         |                     do_syscall
         |                     sys_futex
         |                     do_futex
         |                     futex_wait
         |                     futex_wait_queue_me
         |                     hrtimer_start_range_ns
         |                     __schedule
         |
         |--8.38%--0x12006bb84
         |          handle_syscall
         |          do_syscall
         |          sys_epoll_pwait
         |          do_epoll_wait
         |          schedule_hrtimeout_range_clock
         |          hrtimer_start_range_ns
         |          __schedule
         |
          --4.59%--0x12006b6b8
                    handle_syscall
                    do_syscall
                    sys_nanosleep
                    hrtimer_nanosleep
                    do_nanosleep
                    hrtimer_start_range_ns
                    __schedule

Cc: stable@vger.kernel.org
Fixes: b37042b2bb ("LoongArch: Add perf events support")
Reported-by: Youling Tang <tangyouling@kylinos.cn>
Suggested-by: Youling Tang <tangyouling@kylinos.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
2024-04-24 12:36:07 +08:00
..
vdso
LoongArch: Add support to clone a time namespace
2023-06-29 20:58:43 +08:00
acenv.h
LoongArch: Add boot and setup routines
2022-06-03 20:09:28 +08:00
acpi.h
LoongArch: Change acpi_core_pic[NR_CPUS] to acpi_core_pic[MAX_CORE_PIC]
2024-02-06 12:32:05 +08:00
addrspace.h
LoongArch: Include linux/sizes.h in addrspace.h to prevent build errors
2024-04-10 21:08:51 +08:00
alternative-asm.h
LoongArch: Add alternative runtime patching mechanism
2022-12-14 08:36:11 +08:00
alternative.h
LoongArch: Add alternative runtime patching mechanism
2022-12-14 08:36:11 +08:00
asm-extable.h
LoongArch: BPF: Add BPF exception tables
2022-12-14 08:36:11 +08:00
asm-offsets.h
LoongArch: Add misc common routines
2022-06-03 20:09:28 +08:00
asm-prototypes.h
LoongArch: Add Loongson Binary Translation (LBT) extension support
2023-09-06 22:53:55 +08:00
asm.h
LoongArch: Mark some assembler symbols as non-kprobe-able
2023-02-25 22:12:17 +08:00
asmmacro.h
LoongArch: Record pc instead of offset in la_abs relocation
2023-11-21 15:03:25 +08:00
atomic.h
LoongArch: Relax memory ordering for atomic operations
2023-11-08 14:12:15 +08:00
barrier.h
LoongArch: Support dbar with different hints
2023-06-29 20:58:44 +08:00
bitops.h
LoongArch: Add atomic/locking headers
2022-06-03 20:09:28 +08:00
bitrev.h
LoongArch: Add atomic/locking headers
2022-06-03 20:09:28 +08:00
bootinfo.h
LoongArch: Let cores_io_master cover the largest NR_CPUS
2024-01-17 12:43:08 +08:00
branch.h
LoongArch: Make compute_return_era() return void
2022-06-25 18:06:07 +08:00
bug.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
cache.h
LoongArch: Add memory management
2022-06-03 20:09:28 +08:00
cacheflush.h
LoongArch: Remove superfluous flush_dcache_page() definition
2024-03-19 15:50:34 +08:00
cacheops.h
LoongArch: Refactor cache probe and flush methods
2022-10-12 16:36:14 +08:00
checksum.h
LoongArch: Add checksum optimization for 64-bit system
2023-05-01 17:19:43 +08:00
clocksource.h
LoongArch: Add other common headers
2022-06-03 20:09:28 +08:00
cmpxchg.h
locking/arch: Rename all internal __xchg() names to __arch_xchg()
2023-04-29 09:08:44 +02:00
cpu-features.h
LoongArch: Introduce hardware page table walker
2023-06-29 20:58:44 +08:00
cpu-info.h
LoongArch: Add SMT (Simultaneous Multi-Threading) support
2023-06-29 20:58:43 +08:00
cpu.h
LoongArch: Introduce hardware page table walker
2023-06-29 20:58:44 +08:00
cpufeature.h
LoongArch: Add ELF and module support
2022-06-03 20:09:28 +08:00
crash_reserve.h
LoongArch: Fix Kconfig item and left code related to CRASH_CORE
2024-04-24 12:36:07 +08:00
delay.h
LoongArch: Add some library functions
2022-06-03 20:09:28 +08:00
dma-direct.h
LoongArch: Add Non-Uniform Memory Access (NUMA) support
2022-06-03 20:09:29 +08:00
dma.h
LoongArch: Add PCI controller support
2022-08-12 13:10:11 +08:00
dmi.h
LoongArch: Add boot and setup routines
2022-06-03 20:09:28 +08:00
efi.h
efi/loongarch: Directly position the loaded image file
2023-12-19 11:16:37 +01:00
elf.h
LoongArch: Fix and simplify fcsr initialization on execve()
2024-01-17 12:43:08 +08:00
entry-common.h
LoongArch: Add exception/interrupt handling
2022-06-03 20:09:28 +08:00
exception.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
exec.h
LoongArch: Add ELF and module support
2022-06-03 20:09:28 +08:00
extable.h
LoongArch: BPF: Add BPF exception tables
2022-12-14 08:36:11 +08:00
fb.h
fbdev: Rename fb_mem*() helpers
2023-05-18 11:07:54 +02:00
fixmap.h
LoongArch: Use TLB for ioremap()
2022-10-12 16:36:14 +08:00
fpregdef.h
LoongArch: Prepare for assemblers with proper FCSR class support
2023-06-29 20:58:43 +08:00
fpu.h
LoongArch: Ensure FP/SIMD registers in the core dump file is up to date
2023-08-26 22:21:57 +08:00
ftrace.h
LoongArch: Fix definition of ftrace_regs_set_instruction_pointer()
2024-01-17 12:43:08 +08:00
futex.h
LoongArch: extable: Add a dedicated uaccess handler
2022-12-14 08:36:11 +08:00
gpr-num.h
LoongArch: extable: Also recognize ABI names of registers
2023-06-29 20:58:43 +08:00
hardirq.h
LoongArch: Fix the !CONFIG_SMP build
2022-06-08 11:00:40 +08:00
hugetlb.h
LoongArch: Add memory management
2022-06-03 20:09:28 +08:00
hw_breakpoint.h
LoongArch: Add hardware breakpoints/watchpoints support
2023-02-25 22:12:17 +08:00
hw_irq.h
LoongArch: Add exception/interrupt handling
2022-06-03 20:09:28 +08:00
idle.h
LoongArch: Add process management
2022-06-03 20:09:28 +08:00
inst.h
Merge tag 'loongarch-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
2023-11-12 10:58:08 -08:00
io.h
LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE
2024-04-10 21:08:51 +08:00
irq_regs.h
LoongArch: Add exception/interrupt handling
2022-06-03 20:09:28 +08:00
irq.h
nmi_backtrace: allow excluding an arbitrary CPU
2023-08-18 10:19:00 -07:00
irqflags.h
LoongArch: Remove useless header compiler.h
2022-07-29 18:22:32 +08:00
jump_label.h
work around gcc bugs with 'asm goto' with outputs
2024-02-09 15:57:48 -08:00
kasan.h
LoongArch: Don't inline kasan_mem_to_shadow()/kasan_shadow_to_mem()
2023-09-20 14:26:29 +08:00
Kbuild
LoongArch: Define the __io_aw() hook as mmiowb()
2024-03-19 15:50:34 +08:00
kdebug.h
LoongArch: Remove five DIE_* definitions in kdebug.h
2023-06-29 20:58:44 +08:00
kexec.h
LoongArch: Add kexec support
2022-10-12 16:36:19 +08:00
kfence.h
LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE
2024-04-10 21:08:51 +08:00
kgdb.h
LoongArch: Add basic KGDB & KDB support
2023-09-06 22:53:55 +08:00
kprobes.h
LoongArch: Use larch_insn_gen_break() for kprobes
2023-06-29 20:58:44 +08:00
kvm_csr.h
LoongArch: KVM: Add vcpu related header files
2023-10-02 10:01:27 +08:00
kvm_host.h
Merge tag 'loongarch-kvm-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson into HEAD
2024-01-02 13:16:29 -05:00
kvm_mmu.h
LoongArch: KVM: Implement kvm mmu operations
2023-10-02 10:01:28 +08:00
kvm_types.h
LoongArch: KVM: Add kvm related header files
2023-10-02 10:01:20 +08:00
kvm_vcpu.h
LoongArch: KVM: Add returns to SIMD stubs
2024-01-26 16:22:07 +08:00
lbt.h
LoongArch: Add Loongson Binary Translation (LBT) extension support
2023-09-06 22:53:55 +08:00
linkage.h
LoongArch: Use SYM_CODE_* to annotate exception handlers
2023-10-18 08:42:52 +08:00
local.h
locking/local, arch: Rewrite local_add_unless() as a static inline function
2023-10-04 11:38:11 +02:00
loongarch.h
LoongArch: Slightly clean up drdtime()
2023-12-09 15:49:15 +08:00
loongson.h
LoongArch: Add suspend (ACPI S3) support
2022-12-14 08:41:53 +08:00
mmu_context.h
LoongArch: Add process management
2022-06-03 20:09:28 +08:00
mmu.h
LoongArch: Add process management
2022-06-03 20:09:28 +08:00
mmzone.h
LoongArch: Use static defined zero page rather than allocated
2023-09-06 22:53:10 +08:00
module.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
module.lds.h
LoongArch: module: set section addresses to 0x0
2023-04-18 19:38:58 +08:00
numa.h
LoongArch: Add Non-Uniform Memory Access (NUMA) support
2022-06-03 20:09:29 +08:00
orc_header.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
orc_lookup.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
orc_types.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
page.h
LoongArch: Make {virt, phys, page, pfn} translation work with KFENCE
2024-04-10 21:08:51 +08:00
pci.h
LoongArch: Add PCI controller support
2022-08-12 13:10:11 +08:00
percpu.h
LoongArch: Change __my_cpu_offset definition to avoid mis-optimization
2024-03-19 15:50:34 +08:00
perf_event.h
LoongArch: Fix callchain parse error with kernel tracepoint events
2024-04-24 12:36:07 +08:00
pgalloc.h
mm: add statistics for PUD level pagetable
2023-10-06 14:44:10 -07:00
pgtable-bits.h
LoongArch: Disable WUC for pgprot_writecombine() like ioremap_wc()
2023-10-18 08:42:52 +08:00
pgtable.h
LoongArch: Move {dmw,tlb}_virt_to_page() definition to page.h
2024-03-19 15:50:34 +08:00
prefetch.h
LoongArch: Add other common headers
2022-06-03 20:09:28 +08:00
processor.h
LoongArch: Add Loongson Binary Translation (LBT) extension support
2023-09-06 22:53:55 +08:00
ptrace.h
LoongArch: Add identifier names to arguments of die() declaration
2023-08-25 23:40:26 +08:00
regdef.h
…
seccomp.h
LoongArch: Add system call support
2022-06-03 20:09:28 +08:00
serial.h
LoongArch: Add other common headers
2022-06-03 20:09:28 +08:00
setup.h
LoongArch: Record pc instead of offset in la_abs relocation
2023-11-21 15:03:25 +08:00
smp.h
LoongArch: Fix some build warnings with W=1
2023-09-20 14:26:28 +08:00
sparsemem.h
LoongArch: add sparse memory vmemmap support
2022-12-11 18:12:12 -08:00
spinlock_types.h
LoongArch: Add qspinlock support
2022-10-12 16:36:14 +08:00
spinlock.h
LoongArch: Add qspinlock support
2022-10-12 16:36:14 +08:00
stackframe.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
stackprotector.h
LoongArch: Add basic STACKPROTECTOR support
2022-12-14 08:41:53 +08:00
stacktrace.h
LoongArch: Add USER_STACKTRACE support
2022-08-12 13:10:11 +08:00
string.h
LoongArch: Add KASAN (Kernel Address Sanitizer) support
2023-09-06 22:54:16 +08:00
suspend.h
LoongArch: Export some arch-specific pm interfaces
2023-06-29 20:58:44 +08:00
switch_to.h
LoongArch: Add Loongson Binary Translation (LBT) extension support
2023-09-06 22:53:55 +08:00
syscall.h
LoongArch: Add system call support
2022-06-03 20:09:28 +08:00
thread_info.h
LoongArch: Add kernel livepatching support
2024-03-11 22:23:47 +08:00
time.h
LoongArch: Add suspend (ACPI S3) support
2022-12-14 08:41:53 +08:00
timex.h
LoongArch: Remove MIPS comment about cycle counter
2022-06-08 11:00:40 +08:00
tlb.h
LoongArch: Fix a build error due to __tlb_remove_tlb_entry()
2024-04-24 12:36:07 +08:00
tlbflush.h
LoongArch: Add multi-processor (SMP) support
2022-06-03 20:09:29 +08:00
topology.h
LoongArch: Add Non-Uniform Memory Access (NUMA) support
2022-06-03 20:09:29 +08:00
types.h
LoongArch: Add other common headers
2022-06-03 20:09:28 +08:00
uaccess.h
LoongArch: Use la.pcrel instead of la.abs when it's trivially possible
2023-02-25 22:12:16 +08:00
unistd.h
LoongArch: Add system call support
2022-06-03 20:09:28 +08:00
unwind_hints.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
unwind.h
LoongArch: Add ORC stack unwinder support
2024-03-11 22:23:47 +08:00
uprobes.h
LoongArch: Add uprobes support
2023-06-29 20:58:44 +08:00
vdso.h
LoongArch: Add vDSO syscall __vdso_getcpu()
2022-08-12 13:10:11 +08:00
vermagic.h
LoongArch: Add ELF and module support
2022-06-03 20:09:28 +08:00
vmalloc.h
LoongArch: Add memory management
2022-06-03 20:09:28 +08:00
xor_simd.h
LoongArch: Add SIMD-optimized XOR routines
2023-09-06 22:53:55 +08:00
xor.h
LoongArch: Add SIMD-optimized XOR routines
2023-09-06 22:53:55 +08:00