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| author | Yury Norov <yury.norov@gmail.com> | 2022-02-10 14:49:09 -0800 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2022-04-10 22:35:38 +0200 |
| commit | c2a911d302b0d014a4d0d732a2bfc319e643eb62 (patch) | |
| tree | 0f64c293a81e4637a1ddaec7f8456d45090339fb /arch/x86 | |
| parent | 3a5ff1f6dd50f5e1c2aa87491910dd6d275af24b (diff) | |
| download | linux-c2a911d302b0d014a4d0d732a2bfc319e643eb62.tar.bz2 | |
x86/mm: Replace nodes_weight() with nodes_empty() where appropriate
Various mm code calls nodes_weight() to check if any bit of a given
nodemask is set.
This can be done more efficiently with nodes_empty() because nodes_empty()
stops traversing the nodemask as soon as it finds first set bit, while
nodes_weight() counts all bits unconditionally.
Signed-off-by: Yury Norov <yury.norov@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220210224933.379149-26-yury.norov@gmail.com
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/amdtopology.c | 2 | ||||
| -rw-r--r-- | arch/x86/mm/numa_emulation.c | 4 |
2 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/mm/amdtopology.c b/arch/x86/mm/amdtopology.c index 058b2f36b3a6..b3ca7d23e4b0 100644 --- a/arch/x86/mm/amdtopology.c +++ b/arch/x86/mm/amdtopology.c @@ -154,7 +154,7 @@ int __init amd_numa_init(void) node_set(nodeid, numa_nodes_parsed); } - if (!nodes_weight(numa_nodes_parsed)) + if (nodes_empty(numa_nodes_parsed)) return -ENOENT; /* diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c index 1a02b791d273..9a9305367fdd 100644 --- a/arch/x86/mm/numa_emulation.c +++ b/arch/x86/mm/numa_emulation.c @@ -123,7 +123,7 @@ static int __init split_nodes_interleave(struct numa_meminfo *ei, * Continue to fill physical nodes with fake nodes until there is no * memory left on any of them. */ - while (nodes_weight(physnode_mask)) { + while (!nodes_empty(physnode_mask)) { for_each_node_mask(i, physnode_mask) { u64 dma32_end = PFN_PHYS(MAX_DMA32_PFN); u64 start, limit, end; @@ -270,7 +270,7 @@ static int __init split_nodes_size_interleave_uniform(struct numa_meminfo *ei, * Fill physical nodes with fake nodes of size until there is no memory * left on any of them. */ - while (nodes_weight(physnode_mask)) { + while (!nodes_empty(physnode_mask)) { for_each_node_mask(i, physnode_mask) { u64 dma32_end = PFN_PHYS(MAX_DMA32_PFN); u64 start, limit, end; |