Linux bitmap_weight
Nettettx2_uncore_event_start() calls bitmap_weight() to compare the weight of bitmap with a given number. We can do it more efficiently with bitmap_weight_eq because conditional bitmap_weight may stop traversing the bitmap earlier, as soon as condition is (or can't be) met. Signed-off-by: Yury Norov --- Nettetlinux/sbitmap.h at master · torvalds/linux · GitHub torvalds / linux Public master linux/include/linux/sbitmap.h Go to file Cannot retrieve contributors at this time 639 …
Linux bitmap_weight
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NettetInstances of this class store bitmap fonts, and are used with the PIL.ImageDraw.ImageDraw.text () method. PIL uses its own font file format to store bitmap fonts, limited to 256 characters. You can use pilfont.py from pillow-scripts to convert BDF and PCF font descriptors (X window font formats) to this format. Nettet1 /* SPDX-License-Identifier: GPL-2.0 */ 2 # ifndef __LINUX_BITMAP_H 3: #define __LINUX_BITMAP_H: 4: 5 # ifndef __ASSEMBLY__ 6: 7: #include : 8: # ...
NettetIn computing, a bitmap is a mapping from some domain (for example, a range of integers) to bits. It is also called a bit array or bitmap index . As a noun, the term "bitmap" is … NettetCommand to display hwloc_bitmap_weightmanual in Linux: $ man 3 hwloc_bitmap_weight NAME hwlocality_bitmap - The bitmap API Macros #define …
Nettet29. apr. 2024 · 1) That's a math trick to make sure the width is always a multiple of 4 bytes - regardless of the value for bitcount and width, see this answer 2) The width and height are stored as 32bit values, or 4 bytes (not 5 bytes), they always have to be 4 bytes. I think you are actually asking about pixel data. NettetLinux 内核广泛使用 bit 作为其基础数据结构，包括 bitmap (位图), bitops, bitmask, bit find 等，基于这些基础数据结构，将 bit 运用到复杂的数据结构 中，例如 Bit，虚拟文件系 …
Nettet*PATCH v3 00/54] lib/bitmap: optimize bitmap_weight() usage @ 2024-01-23 18:38 Yury Norov 2024-01-23 18:38 ` [PATCH 01/54] net/dsa: don't use bitmap_weight() in b53_arl_read() Yury Norov ` (54 more replies) 0 siblings, 55 replies; 97+ messages in thread From: Yury Norov @ 2024-01-23 18:38 UTC (permalink / raw) To: Yury Norov, …
Nettet* The bitmap operations that return Boolean (bitmap_empty, * for example) or scalar (bitmap_weight, for example) results * carefully filter out these unused bits from … philippine power sectorNettet14. apr. 2024 · LINUX下简单实现ISP图像处理从RAW到RGB，BMP算法、RGB到JPEG库的使用（一）. 在这里分享一下相关的ISP的一些基本简单图像处理算法。. 在一般的市面上，相关的ISP算法都是非常复杂，且经过不同serson设备的情况进行固定参数并且固化在芯片内来实现。. 所以硬件ISP的 ... philippine power industries corporationNettetbitmap_bitremap: map_bitremap - Apply map defined by a pair of bitmaps to a single bit*@oldbit: bit position to be mapped*@old: defines domain of map*@new: defines range of map*@bits: number of bits in each of these bitmaps* Let @old and @new define a mapping of bit : memweight: 计算内存区域中的位总数 __sbitmap_weight: … philippine power statisticshttp://bricktou.com/include/linux/bitmapbitmap_weight.html philippine power gridNettet31. jan. 2024 · What is Bitmap - A bitmap is a mapping from one system such as integers to bits. It is also known as bitmap index or a bit array.The memory is divided into units … philippine power outletNettet6. jul. 2024 · bitmap_weight () doesn't return negative values, so change it's type to unsigned long. It may help compiler to generate better code and catch bugs. Signed-off-by: Yury Norov --- include/linux/bitmap.h 5 +++-- lib/bitmap.c 5 ++--- tools/include/linux/bitmap.h 4 ++-- tools/lib/bitmap.c 4 ++-- philippine power plugNettet* The bitmap operations that return Boolean (bitmap_empty, * for example) or scalar (bitmap_weight, for example) results * carefully filter out these unused bits from impacting their * results. * * The byte ordering of bitmaps is more natural on little * endian architectures. See the big-endian headers philippine prc license renewal