[ARM] mm 5: Use mem_types table in ioremap We really want to be using the memory type table in ioremap, so we only have to do the CPU type fixups in one place. Signed-off-by: Russell King <rmk+kernel@arm.linux.
Chapter 11. Data Types in the Kernel Before we go on to more advanced topics, we need to stop for a quick note on portability issues. Modern versions of the … - Selection from Linux Device Drivers, 3rd Edition [Book]
One important thing to note is that the command line interface is different from the shell, it only provides a means for you to access the shell. The shell, which is also programmable then makes it possible to communicate with the kernel using commands. Different classifications of Linux comman...
有些接口返回的数据类型,不是标准的C数据类型,而是kernel通过typedef自己定义的数据结构,比如进程ID pid_t。使用这种自定义的类型,好处在于可以隐藏架构不同导致的数据差异,对driver developer而言,无论什么架构,使用的数据类型都是pid_t,kernel则隐藏了每个架构的实现。 然而后面kernel的code使用interface specific 数据...
linux更新显卡驱动提示Multiple kernel module types are available for this sys,介绍NVIDA几乎与Windows一样,通过其专有的驱动程序支持Linux。也就是说,NVIDIA长期以来一直是Linux游戏的go-to选择,这已经不是什么秘密了。不幸的是,即使驱动程序很好地支持Linux,但在
the size of the structures to a multiple of the maximum member size. * Never put sub-command numbers into a structure. 有关compat_ioctl:支持64bit的driver必须要实现的ioctl,当有32bit的userspace application call 64bit kernel的IOCTL的时候,这个callback会被调用到。
就算没有Sparse带来的影响,我们也不能和__kernel一样简单的认为__user什么都不是。因为还有一个STRUCTLEAK_PLUGIN宏。这个宏是自 Linux 内核版本 5.1 开始引入的一个功能,具体来说,这个功能会在函数入口处对带有 __user 属性的结构体进行零初始化。__user 属性通常用于标识指针指向用户地址空间的内存。通过对这些...
Maximum number of network connections: 10,000,000 General computing-plus C9e vCPU to memory ratio: 1:8 Number of vCPUs: 64 or 96 Basic/Turbo frequency: 3.4 GHz/3.8 GHz Hyper-threading (Enabling or Disabling Hyper-Threading) High I/O General Purpose SSD Ultra-high I/O Extreme SSD General...
* in the page cache, it is at a file offset which is a multiple of that * power-of-two. It may be mapped into userspace at an address which is * at an arbitrary page offset, but its kernel virtual address is aligned * to its size. */ struct folio { /* priv...
Linux provides the flexibility to make kernel modifications, which cannot be done with Windows. However, because you can make kernel modifications to Linux, you may need specialized expertise to maintain the production environment. Windows offers the advantage of a stable platform, but it is not as...