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| author | Paolo Abeni <pabeni@redhat.com> | 2024-02-01 13:06:43 +0100 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-02-01 13:06:43 +0100 |
| commit | a40539127479a69fb8ebee46ccd7fbc50794b19d (patch) | |
| tree | 79a26332da7b6d3e0be461a15fe7316f84ec7c55 /include/linux/bitmap.h | |
| parent | 3723b56d6f73f7c8c3b521a80556f129830f6fb9 (diff) | |
| parent | 8afefc361209b726aa5886833384d048412b159e (diff) | |
Merge branch 'net-mana-assigning-irq-affinity-on-ht-cores'
Souradeep Chakrabarti says:
====================
net: mana: Assigning IRQ affinity on HT cores
This patch set introduces a new helper function irq_setup(),
to optimize IRQ distribution for MANA network devices.
The patch set makes the driver working 15% faster than
with cpumask_local_spread().
====================
Link: https://lore.kernel.org/r/1706509267-17754-1-git-send-email-schakrabarti@linux.microsoft.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'include/linux/bitmap.h')
| -rw-r--r-- | include/linux/bitmap.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/include/linux/bitmap.h b/include/linux/bitmap.h index 99451431e4d6..5814e9ee40ba 100644 --- a/include/linux/bitmap.h +++ b/include/linux/bitmap.h @@ -54,6 +54,7 @@ struct device; * bitmap_full(src, nbits) Are all bits set in *src? * bitmap_weight(src, nbits) Hamming Weight: number set bits * bitmap_weight_and(src1, src2, nbits) Hamming Weight of and'ed bitmap + * bitmap_weight_andnot(src1, src2, nbits) Hamming Weight of andnot'ed bitmap * bitmap_set(dst, pos, nbits) Set specified bit area * bitmap_clear(dst, pos, nbits) Clear specified bit area * bitmap_find_next_zero_area(buf, len, pos, n, mask) Find bit free area @@ -169,6 +170,8 @@ bool __bitmap_subset(const unsigned long *bitmap1, unsigned int __bitmap_weight(const unsigned long *bitmap, unsigned int nbits); unsigned int __bitmap_weight_and(const unsigned long *bitmap1, const unsigned long *bitmap2, unsigned int nbits); +unsigned int __bitmap_weight_andnot(const unsigned long *bitmap1, + const unsigned long *bitmap2, unsigned int nbits); void __bitmap_set(unsigned long *map, unsigned int start, int len); void __bitmap_clear(unsigned long *map, unsigned int start, int len); @@ -425,6 +428,15 @@ unsigned long bitmap_weight_and(const unsigned long *src1, return __bitmap_weight_and(src1, src2, nbits); } +static __always_inline +unsigned long bitmap_weight_andnot(const unsigned long *src1, + const unsigned long *src2, unsigned int nbits) +{ + if (small_const_nbits(nbits)) + return hweight_long(*src1 & ~(*src2) & BITMAP_LAST_WORD_MASK(nbits)); + return __bitmap_weight_andnot(src1, src2, nbits); +} + static __always_inline void bitmap_set(unsigned long *map, unsigned int start, unsigned int nbits) { |