The patch titled
Subject: checkpatch: add a test for const with __read_mostly uses
has been added to the -mm tree. Its filename is
checkpatch-add-a-test-for-const-with-__read_mostly-uses.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/checkpatch-add-a-test-for-const-with-__read_mostly-uses.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/checkpatch-add-a-test-for-const-with-__read_mostly-uses.patch
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------------------------------------------------------
From: Joe Perches <joe@xxxxxxxxxxx>
Subject: checkpatch: add a test for const with __read_mostly uses
const objects shouldn't be __read_mostly. They are read-only.
Marking these objects as __read_mostly causes section conflicts with LTO
linking.
So add a test to try to avoid this issue.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxx>
Cc: Andi Kleen <andi@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/checkpatch.pl | 10 ++++++++++
1 file changed, 10 insertions(+)
diff -puN scripts/checkpatch.pl~checkpatch-add-a-test-for-const-with-__read_mostly-uses scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-add-a-test-for-const-with-__read_mostly-uses
+++ a/scripts/checkpatch.pl
@@ -4791,6 +4791,16 @@ sub process {
}
}
+# check for __read_mostly with const non-pointer (should just be const)
+ if ($line =~ /\b__read_mostly\b/ &&
+ $line =~ /($Type)\s*$Ident/ && $1 !~ /\*\s*$/ && $1 =~ /\bconst\b/) {
+ if (ERROR("CONST_READ_MOSTLY",
+ "Invalid use of __read_mostly with const type\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s/\s+__read_mostly\b//;
+ }
+ }
+
# don't use __constant_<foo> functions outside of include/uapi/
if ($realfile !~ m@^include/uapi/@ &&
$line =~ /(__constant_(?:htons|ntohs|[bl]e(?:16|32|64)_to_cpu|cpu_to_[bl]e(?:16|32|64)))\s*\(/) {
_
Patches currently in -mm which might be from joe@xxxxxxxxxxx are
ocfs2-logging-remove-static-buffer-use-vsprintf-extension-%pv.patch
ocfs2-neaten-do_error-ocfs2_error-and-ocfs2_abort.patch
slub-use-bool-function-return-values-of-true-false-not-1-0.patch
maintainers-use-tabs-consistently.patch
maintainers-credits-remove-stefano-brivio-from-b43.patch
x86-mtrr-if-remove-use-of-seq_printf-return-value.patch
power-wakeup-remove-use-of-seq_printf-return-value.patch
rtc-remove-use-of-seq_printf-return-value.patch
ipc-remove-use-of-seq_printf-return-value.patch
microblaze-mb-remove-use-of-seq_printf-return-value.patch
microblaze-mb-remove-use-of-seq_printf-return-value-fix.patch
nios2-cpuinfo-remove-use-of-seq_printf-return-value.patch
arm-plat-pxa-remove-use-of-seq_printf-return-value.patch
openrisc-remove-use-of-seq_printf-return-value.patch
cris-remove-use-of-seq_printf-return-value.patch
cris-fasttimer-remove-use-of-seq_printf-return-value.patch
s390-remove-use-of-seq_printf-return-value.patch
proc-remove-use-of-seq_printf-return-value.patch
cgroup-remove-use-of-seq_printf-return-value.patch
tracing-remove-use-of-seq_printf-return-value.patch
lru_cache-remove-use-of-seq_printf-return-value.patch
parisc-remove-use-of-seq_printf-return-value.patch
lib-vsprintfc-even-faster-decimal-conversion.patch
mm-utilc-add-kstrimdup.patch
checkpatch-improve-no-space-is-necessary-after-a-cast-test.patch
checkpatch-add-spell-checking-of-email-subject-line.patch
checkpatch-spell-check-reudce.patch
checkpatch-add-optional-codespell-dictionary-to-find-more-typos.patch
checkpatch-match-more-world-writable-permissions.patch
checkpatch-match-more-world-writable-permissions-fix.patch
checkpatch-improve-return-negative-errno-check.patch
checkpatch-add-test-for-repeated-const-uses.patch
checkpatch-dont-ask-for-asm-fileh-to-linux-fileh-unconditionally.patch
checkpatch-submittingpatches-suggest-line-wrapping-commit-messages-at-75-columns.patch
checkpatch-add-define-foo-string-long-line-exception.patch
checkpatch-add-uart_ops-to-normally-const-structs.patch
checkpatch-add-prefer-array_size-test.patch
checkpatch-improve-operator-spacing-check.patch
checkpatch-add-a-test-for-const-with-__read_mostly-uses.patch
rtc-use-more-standard-kernel-logging-styles.patch
adfs-returning-correct-return-values.patch
linux-next.patch
proc-show-locks-in-proc-pid-fdinfo-x.patch
proc-show-locks-in-proc-pid-fdinfo-x-v2.patch
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