^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) #ifndef _ASM_X86_FTRACE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) #define _ASM_X86_FTRACE_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #ifdef CONFIG_FUNCTION_TRACER
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #ifndef CC_USING_FENTRY
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) # error Compiler does not support fentry?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) # define MCOUNT_ADDR ((unsigned long)(__fentry__))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define MCOUNT_INSN_SIZE 5 /* sizeof mcount call */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #ifdef CONFIG_DYNAMIC_FTRACE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define ARCH_SUPPORTS_FTRACE_OPS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) extern atomic_t modifying_ftrace_code;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) extern void __fentry__(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static inline unsigned long ftrace_call_adjust(unsigned long addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * addr is the address of the mcount call instruction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * recordmcount does the necessary offset calculation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) return addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * When a ftrace registered caller is tracing a function that is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * also set by a register_ftrace_direct() call, it needs to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * differentiated in the ftrace_caller trampoline. To do this, we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * place the direct caller in the ORIG_AX part of pt_regs. This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * tells the ftrace_caller that there's a direct caller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static inline void arch_ftrace_set_direct_caller(struct pt_regs *regs, unsigned long addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) /* Emulate a call */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) regs->orig_ax = addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) #ifdef CONFIG_DYNAMIC_FTRACE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct dyn_arch_ftrace {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) /* No extra data needed for x86 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #define FTRACE_GRAPH_TRAMP_ADDR FTRACE_GRAPH_ADDR
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #endif /* CONFIG_DYNAMIC_FTRACE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) #endif /* __ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) #endif /* CONFIG_FUNCTION_TRACER */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #ifndef __ASSEMBLY__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) #if defined(CONFIG_FUNCTION_TRACER) && defined(CONFIG_DYNAMIC_FTRACE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) extern void set_ftrace_ops_ro(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) static inline void set_ftrace_ops_ro(void) { }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) #define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) * Compare the symbol name with the system call name. Skip the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) * "__x64_sys", "__ia32_sys", "__do_sys" or simple "sys" prefix.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) return !strcmp(sym + 3, name + 3) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) (!strncmp(sym, "__x64_", 6) && !strcmp(sym + 9, name + 3)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) (!strncmp(sym, "__ia32_", 7) && !strcmp(sym + 10, name + 3)) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) (!strncmp(sym, "__do_sys", 8) && !strcmp(sym + 8, name + 3));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #ifndef COMPILE_OFFSETS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_IA32_EMULATION)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) #include <linux/compat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * Because ia32 syscalls do not map to x86_64 syscall numbers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) * this screws up the trace output when tracing a ia32 task.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) * Instead of reporting bogus syscalls, just do not trace them.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * If the user really wants these, then they should use the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * raw syscall tracepoints with filtering.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) return in_32bit_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) #endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_IA32_EMULATION */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) #endif /* !COMPILE_OFFSETS */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) #endif /* !__ASSEMBLY__ */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) #endif /* _ASM_X86_FTRACE_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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