如何在搜索过程中使cscope显示完整的文件路径

Question

当我使用cscope搜索C符号或全局定义时，它会显示文件名和行号。我想看到完整的文件路径，以便我可以跳转到我的arch特定文件。例如，在基于Linux代码库的__switch_to版本上搜索cscope的全局定义时，我得到：

Global definition: __switch_to

  File         Line
0 process.c    297 struct task_struct *__switch_to(struct task_struct *prev,
1 switch_to.h   44 #define __switch_to(prev,next,last) do { \
2 process.c    202 struct task_struct *__switch_to(struct task_struct *old,
3 process.c    400 struct task_struct *__switch_to(struct task_struct *prev,
4 process_32.c 211 __switch_to(struct task_struct *prev, struct task_struct *next)
5 process.c     80 void *__switch_to(struct task_struct *from, struct task_struct *to)
6 process_32.c 248 __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
7 process_64.c 272 __switch_to(struct task_struct *prev_p, struct task_struct *next_p)

现在，每个process.c的文件arch都不同。如何让cscope显示完整的文件路径？

Answer 1

使用args -pn运行cscope

  

-pn显示最后n个文件路径组件而不是默认值（1）。使用0根本不显示文件名。

使用cscope -p4运行并搜索__switch_to的全局定义会导致

Global definition: __switch_to

  File                           Line
0 arch/arm64/kernel/process.c    297 struct task_struct *__switch_to(struct task_struct *prev,
1 ia64/include/asm/switch_to.h    44 #define __switch_to(prev,next,last) do { \
2 arch/openrisc/kernel/process.c 202 struct task_struct *__switch_to(struct task_struct *old,
3 arch/powerpc/kernel/process.c  400 struct task_struct *__switch_to(struct task_struct *prev,
4 arch/sh/kernel/process_32.c    211 __switch_to(struct task_struct *prev, struct task_struct *next)
5 arch/um/kernel/process.c        80 void *__switch_to(struct task_struct *from, struct task_struct *to)
6 arch/x86/kernel/process_32.c   248 __switch_to(struct task_struct *prev_p, struct task_struct *next_p)
7 arch/x86/kernel/process_64.c   272 __switch_to(struct task_struct *prev_p, struct task_struct *next_p)