H Online reports Microsoft is a relatively big contributor to the Linux 3.0 kernel. Microsoft developer K. Y. Srinivasan made quite a lot of code changes to the kernel, but most appear to be relatively minor.
The 343 changes made by Microsoft developer K. Y. Srinivasan put him at the top of a list, created by LWN.net, of developers who made the most changes in the current development cycle for Linux 3.0. Along with a number of other "change sets", Microsoft provided a total of 361 changes, putting it in seventh place on the list of companies and groups that contributed code to the Linux kernel. By comparison, independent developers provided 1,085 change sets to Linux 3.0, while Red Hat provided 1,000 and Intel 839.