lkml.org 
[lkml]   [2007]   [Dec]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch 2/2] Linux Kernel Markers - Create modpost file
    On Tue, 04 Dec 2007 13:18:47 -0500
    Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> wrote:

    > This adds some new magic in the MODPOST phase for CONFIG_MARKERS.
    > Analogous to the Module.symvers file, the build will now write a
    > Module.markers file when CONFIG_MARKERS=y is set. This file lists
    > the name, defining module, and format string of each marker,
    > separated by \t characters. This simple text file can be used by
    > offline build procedures for instrumentation code, analogous to
    > how System.map and Module.symvers can be useful to have for
    > kernels other than the one you are running right now.
    >
    > The strings are made easy to extract by having the __trace_mark macro
    > define the name and format together in a single array called __mstrtab_*
    > in the __markers_strings section. This is straightforward and reliable
    > as long as the marker structs are always defined by this macro. It is
    > an unreasonable amount of hairy work to extract the string pointers from
    > the __markers section structs, which entails handling a relocation type
    > for every machine under the sun.
    >
    > Mathieu :
    > - Ran through checkpatch.pl
    >
    > ...
    >
    > --- linux-2.6-lttng.orig/scripts/mod/modpost.c 2007-11-21 20:54:17.000000000 -0500
    > +++ linux-2.6-lttng/scripts/mod/modpost.c 2007-11-21 21:19:19.000000000 -0500
    > @@ -11,6 +11,8 @@
    > * Usage: modpost vmlinux module1.o module2.o ...
    > */
    >
    > +#define _GNU_SOURCE

    Why was the mystery addition of _GNU_SOURCE made?

    > +#include <stdio.h>
    > #include <ctype.h>
    > #include "modpost.h"
    > #include "../../include/linux/license.h"
    > @@ -424,6 +426,8 @@ static int parse_elf(struct elf_info *in

    These two patches are unfortunately large, intrusive and tricky to be
    turning up in -rc4.



    \
     
     \ /
      Last update: 2007-12-04 20:13    [W:0.026 / U:89.064 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site