函数逻辑报告

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:kernel\power\hibernate.c Create Date:2022-07-27 10:59:16
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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函数名称：swsusp_show_speed - Print time elapsed between two events during hibernation.*@start: Starting event.*@stop: Final event.*@nr_pages: Number of memory pages processed between @start and @stop.*@msg: Additional diagnostic message to print.

函数原型：void swsusp_show_speed(ktime_t start, ktime_t stop, unsigned nr_pages, char *msg)

返回类型：void

参数：

类型参数名称
ktime_tstart
ktime_tstop
unsignednr_pages
char *msg
248  diff等于Subtract two ktime_t variables. rem = lhs -rhs: (stop, start)
249  elapsed_centisecs64等于ktime_divns(diff, 10 * NSEC_PER_MSEC)
250  centisecs等于elapsed_centisecs64
251  如果centisecs恒等于0则centisecs等于1
253  k等于nr_pages乘PAGE_SIZE除1024
254  kps等于k乘100除centisecs
255  打印信息("%s %u kbytes in %u.%02u seconds (%u.%02u MB/s)\n", msg, k, centisecs / 100, centisecs % 100, kps / 1000, (kps % 1000) / 10)
调用者
名称描述
hibernate_preallocate_memoryhibernate_preallocate_memory - Preallocate memory for hibernation image
save_imagesave_image - save the suspend image data
save_image_lzosave_image_lzo - Save the suspend image data compressed with LZO.*@handle: Swap map handle to use for saving the image.*@snapshot: Image to read data from.*@nr_to_write: Number of pages to save.
load_imageload_image - load the image using the swap map handle*@handle and the snapshot handle @snapshot* (assume there are @nr_pages pages to load)
load_image_lzoload_image_lzo - Load compressed image data and decompress them with LZO.*@handle: Swap map handle to use for loading data.*@snapshot: Image to copy uncompressed data into.*@nr_to_read: Number of pages to load.