Release 4.18 arch/x86/include/asm/ftrace.h
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_X86_FTRACE_H
#define _ASM_X86_FTRACE_H
#ifdef CONFIG_FUNCTION_TRACER
#ifdef CC_USING_FENTRY
# define MCOUNT_ADDR ((unsigned long)(__fentry__))
#else
# define MCOUNT_ADDR ((unsigned long)(mcount))
# define HAVE_FUNCTION_GRAPH_FP_TEST
#endif
#define MCOUNT_INSN_SIZE 5
/* sizeof mcount call */
#ifdef CONFIG_DYNAMIC_FTRACE
#define ARCH_SUPPORTS_FTRACE_OPS 1
#endif
#define HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
#ifndef __ASSEMBLY__
extern void mcount(void);
extern atomic_t modifying_ftrace_code;
extern void __fentry__(void);
static inline unsigned long ftrace_call_adjust(unsigned long addr)
{
/*
* addr is the address of the mcount call instruction.
* recordmcount does the necessary offset calculation.
*/
return addr;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 15 | 93.75% | 1 | 50.00% |
| Martin Schwidefsky | 1 | 6.25% | 1 | 50.00% |
| Total | 16 | 100.00% | 2 | 100.00% |
#ifdef CONFIG_DYNAMIC_FTRACE
struct dyn_arch_ftrace {
/* No extra data needed for x86 */
};
int ftrace_int3_handler(struct pt_regs *regs);
#define FTRACE_GRAPH_TRAMP_ADDR FTRACE_GRAPH_ADDR
#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* __ASSEMBLY__ */
#endif /* CONFIG_FUNCTION_TRACER */
#ifndef __ASSEMBLY__
#define ARCH_HAS_SYSCALL_MATCH_SYM_NAME
static inline bool arch_syscall_match_sym_name(const char *sym, const char *name)
{
/*
* Compare the symbol name with the system call name. Skip the
* "__x64_sys", "__ia32_sys" or simple "sys" prefix.
*/
return !strcmp(sym + 3, name + 3) ||
(!strncmp(sym, "__x64_", 6) && !strcmp(sym + 9, name + 3)) ||
(!strncmp(sym, "__ia32_", 7) && !strcmp(sym + 10, name + 3));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 79 | 100.00% | 2 | 100.00% |
| Total | 79 | 100.00% | 2 | 100.00% |
#ifndef COMPILE_OFFSETS
#if defined(CONFIG_FTRACE_SYSCALLS) && defined(CONFIG_IA32_EMULATION)
#include <linux/compat.h>
/*
* Because ia32 syscalls do not map to x86_64 syscall numbers
* this screws up the trace output when tracing a ia32 task.
* Instead of reporting bogus syscalls, just do not trace them.
*
* If the user really wants these, then they should use the
* raw syscall tracepoints with filtering.
*/
#define ARCH_TRACE_IGNORE_COMPAT_SYSCALLS 1
static inline bool arch_trace_is_compat_syscall(struct pt_regs *regs)
{
if (in_compat_syscall())
return true;
return false;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 22 | 95.65% | 1 | 50.00% |
| Andrew Lutomirski | 1 | 4.35% | 1 | 50.00% |
| Total | 23 | 100.00% | 2 | 100.00% |
#endif /* CONFIG_FTRACE_SYSCALLS && CONFIG_IA32_EMULATION */
#endif /* !COMPILE_OFFSETS */
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_X86_FTRACE_H */
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 214 | 83.92% | 15 | 60.00% |
| Abhishek Sagar | 25 | 9.80% | 1 | 4.00% |
| Josh Poimboeuf | 6 | 2.35% | 2 | 8.00% |
| H. Peter Anvin | 3 | 1.18% | 1 | 4.00% |
| Minfei Huang | 2 | 0.78% | 1 | 4.00% |
| Adam Buchbinder | 1 | 0.39% | 1 | 4.00% |
| Deepa Dinamani | 1 | 0.39% | 1 | 4.00% |
| Greg Kroah-Hartman | 1 | 0.39% | 1 | 4.00% |
| Andrew Lutomirski | 1 | 0.39% | 1 | 4.00% |
| Martin Schwidefsky | 1 | 0.39% | 1 | 4.00% |
| Total | 255 | 100.00% | 25 | 100.00% |
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