PTRACE_{READ,WRITE}{TEXT,DATA}

[Benjamin Herrenschmidt]

Hi Roland, David !

I noticed kernel/ptrace.c has ptrace_readdata/writedata functions that
are only used by sparc and sparc64 which implements the ptrace requests
PTRACE_READ_DATA, PTRACE_WRITE_DATA (and _TEXT variants).

Any reason not to make everybody benefit from these and moving the sparc
implementation to the generic ptrace_request (&compat) ?

It's more efficient than read/writing one word at a time... I thought
about it in the light of some work Rik is doing to make
access_process_vm useable on video ram mappings done by the X server...

If you are ok, I'll do a patch.

Cheers,
Ben

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/