[PATCH v2 12/37] hrtimer: Make room in struct hrtimer_cpu_base

Anna-Maria Gleixner
2017-10-22T21:43:14Z

[-- Attachment #1: hrtimer--Change-unsigend-int-to-short.patch --]
[-- Type: text/plain, Size: 963 bytes --]

The upcoming softirq based hrtimers support requires an additional field in
the hrtimer_cpu_base struct, which would grow the struct size beyond a
cache line.

The struct members nr_retries and nr_hangs of hrtimer_cpu_base are solely
used for diagnostic output and have no requirement to be unsigned int.

Make them unsigned short to create room for the new struct member. No
functional change.

Signed-off-by: Anna-Maria Gleixner <anna-maria@linutronix.de>
---
include/linux/hrtimer.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/include/linux/hrtimer.h
+++ b/include/linux/hrtimer.h
@@ -193,8 +193,8 @@ struct hrtimer_cpu_base {
ktime_t expires_next;
struct hrtimer *next_timer;
unsigned int nr_events;
- unsigned int nr_retries;
- unsigned int nr_hangs;
+ unsigned short nr_retries;
+ unsigned short nr_hangs;
unsigned int max_hang_time;
#endif
struct hrtimer_clock_base clock_base[HRTIMER_MAX_CLOCK_BASES];