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sched: Improve the scheduler

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This change is for general scheduler improvements.

Change-Id: I780f52ebc3cb69ee2c497d2d2f8e8fddd789421d
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
This commit is contained in:
Lingutla Chandrasekhar 2020-02-13 11:38:47 +05:30 • committed by Satya Durga Srinivasu Prabhala
commit a21fe9c3d8
1 changed files with 10 additions and 3 deletions
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13
kernel/sched/core.c
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@ -5627,6 +5627,7 @@ unsigned int sched_lib_mask_force;
bool is_sched_lib_based_app(pid_t pid)
{
const char *name = NULL;
char *lib_list, *libname;
struct vm_area_struct *vma;
char path_buf[LIB_PATH_LENGTH];
bool found = false;
@ -5636,11 +5637,14 @@ bool is_sched_lib_based_app(pid_t pid)
if (strnlen(sched_lib_name, LIB_PATH_LENGTH) == 0)
return false;
lib_list = kstrdup(sched_lib_name, GFP_KERNEL);
rcu_read_lock();
p = find_process_by_pid(pid);
if (!p) {
rcu_read_unlock();
kfree(lib_list);
return false;
}
@ -5660,10 +5664,12 @@ bool is_sched_lib_based_app(pid_t pid)
if (IS_ERR(name))
goto release_sem;
if (strnstr(name, sched_lib_name,
while ((libname = strsep(&lib_list, ","))) {
if (strnstr(name, libname,
strnlen(name, LIB_PATH_LENGTH))) {
found = true;
break;
found = true;
break;
}
}
}
}
@ -5673,6 +5679,7 @@ release_sem:
mmput(mm);
put_task_struct:
put_task_struct(p);
kfree(lib_list);
return found;
}