Loading arch/sh/kernel/ftrace.c +27 −10 Original line number Diff line number Diff line Loading @@ -291,31 +291,48 @@ struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } void arch_init_ftrace_syscalls(void) int syscall_name_to_nr(char *name) { int i; if (!syscalls_metadata) return -1; for (i = 0; i < NR_syscalls; i++) if (syscalls_metadata[i]) if (!strcmp(syscalls_metadata[i]->name, name)) return i; return -1; } void set_syscall_enter_id(int num, int id) { syscalls_metadata[num]->enter_id = id; } void set_syscall_exit_id(int num, int id) { syscalls_metadata[num]->exit_id = id; } static int __init arch_init_ftrace_syscalls(void) { int i; struct syscall_metadata *meta; unsigned long **psys_syscall_table = &sys_call_table; static atomic_t refs; if (atomic_inc_return(&refs) != 1) goto end; syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) * FTRACE_SYSCALL_MAX, GFP_KERNEL); if (!syscalls_metadata) { WARN_ON(1); return; return -ENOMEM; } for (i = 0; i < FTRACE_SYSCALL_MAX; i++) { meta = find_syscall_meta(psys_syscall_table[i]); syscalls_metadata[i] = meta; } return; /* Paranoid: avoid overflow */ end: atomic_dec(&refs); return 0; } arch_initcall(arch_init_ftrace_syscalls); #endif /* CONFIG_FTRACE_SYSCALLS */ Loading
arch/sh/kernel/ftrace.c +27 −10 Original line number Diff line number Diff line Loading @@ -291,31 +291,48 @@ struct syscall_metadata *syscall_nr_to_meta(int nr) return syscalls_metadata[nr]; } void arch_init_ftrace_syscalls(void) int syscall_name_to_nr(char *name) { int i; if (!syscalls_metadata) return -1; for (i = 0; i < NR_syscalls; i++) if (syscalls_metadata[i]) if (!strcmp(syscalls_metadata[i]->name, name)) return i; return -1; } void set_syscall_enter_id(int num, int id) { syscalls_metadata[num]->enter_id = id; } void set_syscall_exit_id(int num, int id) { syscalls_metadata[num]->exit_id = id; } static int __init arch_init_ftrace_syscalls(void) { int i; struct syscall_metadata *meta; unsigned long **psys_syscall_table = &sys_call_table; static atomic_t refs; if (atomic_inc_return(&refs) != 1) goto end; syscalls_metadata = kzalloc(sizeof(*syscalls_metadata) * FTRACE_SYSCALL_MAX, GFP_KERNEL); if (!syscalls_metadata) { WARN_ON(1); return; return -ENOMEM; } for (i = 0; i < FTRACE_SYSCALL_MAX; i++) { meta = find_syscall_meta(psys_syscall_table[i]); syscalls_metadata[i] = meta; } return; /* Paranoid: avoid overflow */ end: atomic_dec(&refs); return 0; } arch_initcall(arch_init_ftrace_syscalls); #endif /* CONFIG_FTRACE_SYSCALLS */