问题
When I search for a C symbol or global definition using cscope, it displays the file-names and line numbers. I would like to see the full file-paths so that I can jump to my arch specific file. For example, when searching for global definition of __switch_to on cscope build on Linux code-base, I get:
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)
Now, the file process.c is different for each arch. How to make cscope display the full file-paths?
回答1:
Run cscope with args -pn
-pn Display the last n file path components instead of the default (1). Use 0 not to display the file name at all.
Running with cscope -p4 and searching for global definition of __switch_to results in
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)
来源：https://stackoverflow.com/questions/13928705/how-to-make-cscope-display-full-file-paths-during-search