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Code Issues Releases Wiki Activity

sched/core: Simplify code by removing duplicate #ifdefs 

There's a few cases of nested #ifdefs in the scheduler code
that can be simplified:

  #ifdef DEFINE_A
  ...code block...
    #ifdef DEFINE_A       <-- This is a duplicate.
    ...code block...
    #endif
  #else
    #ifndef DEFINE_A     <-- This is also duplicate.
    ...code block...
    #endif
  #endif

More details about the script and methods used to find these code
patterns can be found at:

  https://lore.kernel.org/all/20240118080326.13137-1-sshegde@linux.ibm.com/

No change in functionality intended.

[ mingo: Clarified the changelog. ]

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20240216061433.535522-1-sshegde@linux.ibm.com
This commit is contained in:
Shrikanth Hegde 2024-02-16 11:44:33 +05:30 committed by Ingo Molnar
parent 841c351693
commit 8cec3dd9e5
2 changed files with 1 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/sched/core.c
View File

@ -1792,7 +1792,6 @@ static void cpu_util_update_eff(struct cgroup_subsys_state *css);
#endif
#ifdef CONFIG_SYSCTL
#ifdef CONFIG_UCLAMP_TASK
#ifdef CONFIG_UCLAMP_TASK_GROUP
static void uclamp_update_root_tg(void)
{
@ -1898,7 +1897,6 @@ undo:
return result;
}
#endif
#endif
static int uclamp_validate(struct task_struct *p,
const struct sched_attr *attr)
@ -2065,7 +2063,7 @@ static void __init init_uclamp(void)
}
}
#else /* CONFIG_UCLAMP_TASK */
#else /* !CONFIG_UCLAMP_TASK */
static inline void uclamp_rq_inc(struct rq *rq, struct task_struct *p) { }
static inline void uclamp_rq_dec(struct rq *rq, struct task_struct *p) { }
static inline int uclamp_validate(struct task_struct *p,

2
kernel/sched/fair.c
View File

@ -10182,10 +10182,8 @@ static int idle_cpu_without(int cpu, struct task_struct *p)
* be computed and tested before calling idle_cpu_without().
*/
#ifdef CONFIG_SMP
if (rq->ttwu_pending)
return 0;
#endif
return 1;
}