Subject: + printk-mark-printk_once-test-variable-__read_mostly.patch added to -mm tree
To: joe@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Mon, 07 Oct 2013 16:44:14 -0700
The patch titled
Subject: printk: mark printk_once test variable __read_mostly
has been added to the -mm tree. Its filename is
printk-mark-printk_once-test-variable-__read_mostly.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/printk-mark-printk_once-test-variable-__read_mostly.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/printk-mark-printk_once-test-variable-__read_mostly.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Joe Perches <joe@xxxxxxxxxxx>
Subject: printk: mark printk_once test variable __read_mostly
It's only set once so mark it __read_mostly.
Neaten the alignment so it matches the rest of the pr_<level>_once
#defines too.
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/printk.h | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff -puN include/linux/printk.h~printk-mark-printk_once-test-variable-__read_mostly include/linux/printk.h
--- a/include/linux/printk.h~printk-mark-printk_once-test-variable-__read_mostly
+++ a/include/linux/printk.h
@@ -251,17 +251,17 @@ extern asmlinkage void dump_stack(void)
*/
#ifdef CONFIG_PRINTK
-#define printk_once(fmt, ...) \
-({ \
- static bool __print_once; \
- \
- if (!__print_once) { \
- __print_once = true; \
- printk(fmt, ##__VA_ARGS__); \
- } \
+#define printk_once(fmt, ...) \
+({ \
+ static bool __print_once __read_mostly; \
+ \
+ if (!__print_once) { \
+ __print_once = true; \
+ printk(fmt, ##__VA_ARGS__); \
+ } \
})
#else
-#define printk_once(fmt, ...) \
+#define printk_once(fmt, ...) \
no_printk(fmt, ##__VA_ARGS__)
#endif
_
Patches currently in -mm which might be from joe@xxxxxxxxxxx are
kernel-timerc-convert-kmalloc_nodegfp_zero-to-kzalloc_node.patch
ksm-remove-redundant-__gfp_zero-from-kcalloc.patch
printk-report-console-names-during-cut-over.patch
kernel-printk-printkc-convert-to-pr_foo.patch
printk-mark-printk_once-test-variable-__read_mostly.patch
checkpatch-report-missing-spaces-around-trigraphs-with-strict.patch
checkpatch-extend-camelcase-types-and-ignore-existing-camelcase-uses-in-a-patch.patch
checkpatch-update-seq_foo-tests.patch
checkpatch-find-camelcase-definitions-of-struct-union-enum.patch
checkpatch-add-test-for-defines-of-arch_has_foo.patch
checkpatch-add-rules-to-check-init-attribute-and-const-defects.patch
checkpatch-make-the-memory-barrier-test-noisier.patch
checkpatchpl-check-for-the-fsf-mailing-address.patch
kernel-modulec-use-pr_foo.patch
linux-next.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
