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author | Matthias Kaehlcke <mka@chromium.org> | 2017-10-30 11:08:16 -0700 |
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committer | Ingo Molnar <mingo@kernel.org> | 2017-11-01 09:36:17 +0100 |
commit | a9903f04e0a4ea522d959c2f287cdf0ab029e324 (patch) | |
tree | 39f9bd9e39962827b3a473571e1fce732e43d103 /init | |
parent | b0d40d2b22fe48cfcbbfb137fd198be0a1cd8a85 (diff) | |
download | linux-stable-a9903f04e0a4ea522d959c2f287cdf0ab029e324.tar.gz linux-stable-a9903f04e0a4ea522d959c2f287cdf0ab029e324.tar.bz2 linux-stable-a9903f04e0a4ea522d959c2f287cdf0ab029e324.zip |
sched/sysctl: Fix attributes of some extern declarations
The definition of sysctl_sched_migration_cost, sysctl_sched_nr_migrate
and sysctl_sched_time_avg includes the attribute const_debug. This
attribute is not part of the extern declaration of these variables in
include/linux/sched/sysctl.h, while it is in kernel/sched/sched.h,
and as a result Clang generates warnings like this:
kernel/sched/sched.h:1618:33: warning: section attribute is specified on redeclared variable [-Wsection]
extern const_debug unsigned int sysctl_sched_time_avg;
^
./include/linux/sched/sysctl.h:42:21: note: previous declaration is here
extern unsigned int sysctl_sched_time_avg;
The header only declares the variables when CONFIG_SCHED_DEBUG is defined,
therefore it is not necessary to duplicate the definition of const_debug.
Instead we can use the attribute __read_mostly, which is the expansion of
const_debug when CONFIG_SCHED_DEBUG=y is set.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shile Zhang <shile.zhang@nokia.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20171030180816.170850-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions