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authorSam Ravnborg <sam@mars.ravnborg.org>2006-02-17 22:42:02 +0100
committerSam Ravnborg <sam@mars.ravnborg.org>2006-02-19 09:51:20 +0100
commitb39927cf4cc5a9123d2b157ffd396884cb8156eb (patch)
tree8e372f4b8fa678de7239a125ff4653f136a9dc66 /scripts/basic
parenta67dc21a38055ec2d8d85b2f64d98091748569b3 (diff)
downloadop-kernel-dev-b39927cf4cc5a9123d2b157ffd396884cb8156eb.zip
op-kernel-dev-b39927cf4cc5a9123d2b157ffd396884cb8156eb.tar.gz
kbuild: check for section mismatch during modpost stage
Section mismatch is identified as references to .init* sections from non .init sections. And likewise references to .exit.* sections outside .exit sections. .init.* sections are discarded after a module is initialized and references to .init.* sections are oops candidates. .exit.* sections are discarded when a module is built-in and thus references to .exit are also oops candidates. The checks were possible to do using 'make buildcheck' which called the two perl scripts: reference_discarded.pl and reference_init.pl. This patch just moves the same functionality inside modpost and the scripts are then obsoleted. They will though be kept for a while so users can do double checks - but note that some .o files are skipped by the perl scripts so result is not 1:1. All credit for the concept goes to Keith Owens who implemented the original perl scrips - this patch just moves it to modpost. Compared to the perl script the implmentation in modpost will be run for each kernel build - thus catching the error much sooner, but the downside is that the individual .o file are not always identified. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
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