Optimize performance of the fbdev console for the common case of software-based clearing and image blitting. The commit descripton of each patch contains resuls os a simple microbenchmark. I also tested the full patchset's effect on the console output by printing directory listings (i7-4790, FullHD, simpledrm, kernel with debugging). > time find /usr/share/doc -type f In the unoptimized case: real 0m6.173s user 0m0.044s sys 0m6.107s With optimizations applied: real 0m4.754s user 0m0.044s sys 0m4.698s In the optimized case, printing the directory listing is ~25% faster than before. Thomas Zimmermann (2): fbdev: Improve performance of sys_fillrect() fbdev: Improve performance of sys_imageblit() drivers/video/fbdev/core/sysfillrect.c | 16 ++------ drivers/video/fbdev/core/sysimgblt.c | 51 ++++++++++++++++++++------ 2 files changed, 42 insertions(+), 25 deletions(-) -- 2.34.1
