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| author | Maxime Ripard <maxime@cerno.tech> | 2022-10-18 15:00:03 +0200 |
|---|---|---|
| committer | Maxime Ripard <maxime@cerno.tech> | 2022-10-18 15:00:03 +0200 |
| commit | a140a6a2d5ec0329ad05cd3532a91ad0ce58dceb (patch) | |
| tree | b2d44a1da423c53bd6c3ab3facd45ff5f2087ffd /include/linux/nodemask.h | |
| parent | 28743e25fa1c867675bd8ff976eb92d4251f13a1 (diff) | |
| parent | 9abf2313adc1ca1b6180c508c25f22f9395cc780 (diff) | |
| download | linux-next-a140a6a2d5ec0329ad05cd3532a91ad0ce58dceb.tar.gz linux-next-a140a6a2d5ec0329ad05cd3532a91ad0ce58dceb.zip | |
Merge drm/drm-next into drm-misc-next
Let's kick-off this release cycle.
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Diffstat (limited to 'include/linux/nodemask.h')
| -rw-r--r-- | include/linux/nodemask.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h index 4b71a96190a8..efef68c9352a 100644 --- a/include/linux/nodemask.h +++ b/include/linux/nodemask.h @@ -493,6 +493,7 @@ static inline int num_node_state(enum node_states state) #define first_online_node 0 #define first_memory_node 0 #define next_online_node(nid) (MAX_NUMNODES) +#define next_memory_node(nid) (MAX_NUMNODES) #define nr_node_ids 1U #define nr_online_nodes 1U @@ -504,12 +505,20 @@ static inline int num_node_state(enum node_states state) static inline int node_random(const nodemask_t *maskp) { #if defined(CONFIG_NUMA) && (MAX_NUMNODES > 1) - int w, bit = NUMA_NO_NODE; + int w, bit; w = nodes_weight(*maskp); - if (w) - bit = bitmap_ord_to_pos(maskp->bits, - get_random_int() % w, MAX_NUMNODES); + switch (w) { + case 0: + bit = NUMA_NO_NODE; + break; + case 1: + bit = first_node(*maskp); + break; + default: + bit = find_nth_bit(maskp->bits, MAX_NUMNODES, prandom_u32_max(w)); + break; + } return bit; #else return 0; |