| US 7,475,291 B2 | ||
| Apparatus and method to generate and save run time data | ||
| Charles Scott Cardinell, Tucson, Ariz. (US); Roger G. Hathorn, Tucson, Ariz. (US); Man Wah Ma, Pleasanton, Calif. (US); and Kimberly A. Thomas, Tucson, Ariz. (US) | ||
| Assigned to International Business Machines Corporation, Armonk, N.Y. (US) | ||
| Filed on Mar. 31, 2005, as Appl. No. 11/97,532. | ||
| Prior Publication US 2006/0224928 A1, Oct. 05, 2006 | ||
| Int. Cl. G06F 11/00 (2006.01) | ||
| U.S. Cl. 714—45 [714/30; 717/128] | 11 Claims |
| 1. A method to generate and save run time data, comprising the steps of:
supplying an embedded device comprising a processor, a processor cache, memory, a hardware trace facility comprising a plurality
of data buffers, a first bus interconnecting said hardware trace facility and said memory, and a second bus interconnecting
said processor and said hardware trace facility, wherein said embedded device is capable of communicating with one or more
host adapter ports;
generating trace data by said processor, without interrupting said first bus or said second bus;
storing said trace data in said processor cache, without interrupting said first bus or said second bus;
writing said trace data to said plurality of data buffers comprising a plurality of FIFOs, without interrupting said first
bus;
issuing a data cache block set command to allocate a cache line;
writing one trace line per processor cache line.
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