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| author | luca abeni <luca.abeni@santannapisa.it> | 2017-09-07 13:09:31 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-10-10 12:45:26 +0300 |
| commit | 799ba82de01e7543f6b2042e1a739f3a20255f23 (patch) | |
| tree | b28040f9a227eb73af78a698dda7a83defdd2068 /kernel/sched | |
| parent | 8c0944cee7af55291df0b28e6e2eeac0930e93c9 (diff) | |
| download | linux-799ba82de01e7543f6b2042e1a739f3a20255f23.tar.xz | |
sched/deadline: Use C bitfields for the state flags
Ask the compiler to use a single bit for storing true / false values,
instead of wasting the size of a whole int value.
Tested with gcc 5.4.0 on x86_64, and the compiler produces the expected
Assembly (similar to the Assembly code generated when explicitly accessing
the bits with bitmasks, "&" and "|").
Signed-off-by: luca abeni <luca.abeni@santannapisa.it>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Cc: Juri Lelli <juri.lelli@arm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1504778971-13573-5-git-send-email-luca.abeni@santannapisa.it
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/sched')
0 files changed, 0 insertions, 0 deletions