Re: when using gtags-cscope to lookup xxx reference in vim, It has not displaying the function call xxx

Hello,
> when using gtags-cscope to lookup xxx reference in vim, It has not displa=
ying the function call xxx

You are right. Gtags-cscope(1) does not perfectly reproduce cscope(1).
Since Global doesn't recognize the function which is calling, the function =
field
is meaningless when referenced.
Do you think this should be changed to "unknown" to avoid misunderstandings=
?

$ man global
>>BUG
>>       The function field of the display is almost <unknown> since Global=
 doesn't recognize it.
>>
>>       =C2=B4Find functions called by this function=C2=B4 is not implemen=
ted.

Regards,
Shigio

On Wed, Jun 18, 2025 at 10:46=E2=80=AFPM Chaohai Chen <[email protected]> wr=
ote:
>
> when I use cscope to lookup the reference of "kernel_read", in kernel
> code, vim quickfix window is like:
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D
>  1 arch/mips/kernel/elf.c|121| <<arch_elf_pt_proc>> ret =3D kernel_read(e=
lf, &abiflags, sizeof(abiflags), &pos);                                    =
                                                                           =
                                         2 arch/um/drivers/mconsole_kern.c|=
152| <<mconsole_proc>> len =3D kernel_read(file, buf, PAGE_SIZE - 1, &pos);
>   3 arch/x86/ia32/ia32_aout.c|414| <<load_aout_library>> error =3D kernel=
_read(file, &ex, sizeof(ex), &pos);
>   4 drivers/mtd/nand/raw/nandsim.c|1364| <<read_file>> tx =3D kernel_read=
(file, buf, count, &pos);
>   5 drivers/usb/gadget/function/f_mass_storage.c|694| <<do_read>> nread =
=3D kernel_read(curlun->filp, bh->buf, amount,
>   6 drivers/usb/gadget/function/f_mass_storage.c|1028| <<do_verify>> nrea=
d =3D kernel_read(curlun->filp, bh->buf, amount,
>   7 fs/binfmt_aout.c|350| <<load_aout_library>> error =3D kernel_read(fil=
e, &ex, sizeof(ex), &pos);
>   8 fs/binfmt_elf.c|446| <<load_elf_phdrs>> retval =3D kernel_read(elf_fi=
le, elf_phdata, size, &pos);
>   9 fs/binfmt_elf.c|768| <<load_elf_binary>> retval =3D kernel_read(bprm-=
>file, elf_interpreter,
>  10 fs/binfmt_elf.c|794| <<load_elf_binary>> retval =3D kernel_read(inter=
preter, &loc->interp_elf_ex,
>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
>
>  but use gtags-cscope, vim quickfix window is like:
>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
> 1 drivers/crypto/ccp/sev-dev.c|295| <<kernel_read>> nread =3D kernel_read=
(fp, sev_init_ex_buffer, NV_LENGTH, NULL);
> 2 drivers/mtd/nand/raw/nandsim.c|1352| <<kernel_read>> tx =3D kernel_read=
(file, buf, count, &pos);
> 3 drivers/usb/gadget/function/f_mass_storage.c|684| <<kernel_read>> nread=
 =3D kernel_read(curlun->filp, bh->buf, amount,
> 4 drivers/usb/gadget/function/f_mass_storage.c|1021| <<kernel_read>> nrea=
d =3D kernel_read(curlun->filp, bh->buf, amount,
> 5 fs/binfmt_elf.c|469| <<kernel_read>> rv =3D kernel_read(file, buf, len,=
 &pos);
> 6 fs/binfmt_elf.c|786| <<kernel_read>> n =3D kernel_read(f, &note, phdr->=
p_filesz, &pos);
>  =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D
>
>
> the function in "<<*>>" is different, I can't get the functon who call th=
e "kernel_read"
>
>


--=20
Shigio YAMAGUCHI <[email protected]>
PGP fingerprint:
26F6 31B4 3D62 4A92 7E6F  1C33 969C 3BE3 89DD A6EB