Replace pairs of calls to <atomic_inc, atomic_read>, with a single call atomic_inc_return, saving a few bytes of source and kernel text.
Unified · Split
| @@ -858,8 +858,7 @@ static int update_nodemask(struct cpuset *cs, char *buf) · 857 unmodified lines | ||
| 858 | 858 | |
| 859 | 859 | mutex_lock(&callback_mutex); |
| 860 | 860 | cs->mems_allowed = trialcs.mems_allowed; |
| 861 | − atomic_inc(&cpuset_mems_generation); | |
| 862 | − cs->mems_generation = atomic_read(&cpuset_mems_generation); | |
| 861 | + cs->mems_generation = atomic_inc_return(&cpuset_mems_generation); | |
| 863 | 862 | mutex_unlock(&callback_mutex); |
| 864 | 863 | |
| 865 | 864 | set_cpuset_being_rebound(cs); /* causes mpol_copy() rebind */ |
| @@ -1770,8 +1769,7 @@ static long cpuset_create(struct cpuset *parent, const char *name, int mode) · 904 unmodified lines | ||
| 1770 | 1769 | atomic_set(&cs->count, 0); |
| 1771 | 1770 | INIT_LIST_HEAD(&cs->sibling); |
| 1772 | 1771 | INIT_LIST_HEAD(&cs->children); |
| 1773 | − atomic_inc(&cpuset_mems_generation); | |
| 1774 | − cs->mems_generation = atomic_read(&cpuset_mems_generation); | |
| 1772 | + cs->mems_generation = atomic_inc_return(&cpuset_mems_generation); | |
| 1775 | 1773 | fmeter_init(&cs->fmeter); |
| 1776 | 1774 | |
| 1777 | 1775 | cs->parent = parent; |
| @@ -1861,7 +1859,7 @@ int __init cpuset_init_early(void) · 83 unmodified lines | ||
| 1861 | 1859 | struct task_struct *tsk = current; |
| 1862 | 1860 | |
| 1863 | 1861 | tsk->cpuset = &top_cpuset; |
| 1864 | − tsk->cpuset->mems_generation = atomic_read(&cpuset_mems_generation); | |
| 1862 | + tsk->cpuset->mems_generation = atomic_inc_return(&cpuset_mems_generation); | |
| 1865 | 1863 | return 0; |
| 1866 | 1864 | } |
| 1867 | 1865 | |
| @@ -1880,8 +1878,7 @@ int __init cpuset_init(void) · 12 unmodified lines | ||
| 1880 | 1878 | top_cpuset.mems_allowed = NODE_MASK_ALL; |
| 1881 | 1879 | |
| 1882 | 1880 | fmeter_init(&top_cpuset.fmeter); |
| 1883 | − atomic_inc(&cpuset_mems_generation); | |
| 1884 | − top_cpuset.mems_generation = atomic_read(&cpuset_mems_generation); | |
| 1881 | + top_cpuset.mems_generation = atomic_inc_return(&cpuset_mems_generation); | |
| 1885 | 1882 | |
| 1886 | 1883 | init_task.cpuset = &top_cpuset; |
| 1887 | 1884 | |