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The maximum usable buffer size of the s390 debug feature (when using the sprintf_view) is 11 * sizeof(long) (1 pointer for the format string + 10 arguments). When a larger buffer size is specified the additional memory is unused and wasted per debug entry. So reducing the buffer size to its maximum (or to the actual buffer size used) will make more precious debug feature space usable. For pci_msg, chsc_msg, and cio_crw we use the additional usable dbf space to reduce the number of allocated pages. Signed-off-by: Sebastian Ott <sebott@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> |
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