[perfmon2] [PATCH 0/7] kernel : cell-spe-follow support
Status: Beta
Brought to you by:
seranian
From: TakashiYamamoto <Tak...@jp...> - 2008-03-24 13:00:27
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Hello, Here is the cell-spe-follow support. Cell has one PPE(PowerPC Processor Element) and 8 SPE(Synergistic Processor Element)s. When we execute a SPE program, a kernel task(thread) which runs on PPE is created and the kernel task kicks the SPE program on a SPE. And the kernel task sleeps while the SPE program runs. In general, SPE programmers want to count the SPE performance events while the SPE program runs by perfmon2. To realize that, this patch adds cell-spe-follow flag to the pfm context. If the flag is specified by user, pfm context switchs are executed by SPE event notification instead of kernel task switches. If you have any questions and comments, Please let me know them. [PATCH 1/7] : Add the create/free_context routines for Cell. [PATCH 2/7] : Add cell_spe_follow flag to the context flags. [PATCH 3/7] : Add arch private data to pfm_arch_context to keep spu event notification data. [PATCH 4/7] : Export pfm_ctxsw(). [PATCH 5/7] : Call pfm_ctxsw() from the SPU event notifier to chase the target SPU program. [PATCH 6/7] : Change the PMU access check in pfm_read_pmds() [PATCH 7/7] : unload/free context at __pfm_close(). |