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The diag buffer which is allocated during driver load time or through sysfs parameter is marked as driver allocated diag buffer. MPT3_DIAG_BUFFER_IS_DRIVER_ALLOCATED bit will be set for this buffer. This buffer won't be de-allocated even when application issues unregister command, driver just clears the registered status bit. Same buffer will be reused while re-registering the same diag buffer type by any application. While re-registering the same diag buffer type application has to register with the same size that the buffer was allocated during driver load time. This buffer size can be read by the application by issuing diag 'query' command. This always makes sure that the memory is available for applications for collecting the firmware logs. Only thing is that this won't allow the application to re-register the diag buffer with different size, but the buffer size which is allocated during driver load time will be enough for most of the cases for collecting the firmware logs. Link: https://lore.kernel.org/r/1568379890-18347-8-git-send-email-sreekanth.reddy@broadcom.com Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> |
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| .. | ||
| mpi | ||
| Kconfig | ||
| Makefile | ||
| mpt3sas_base.c | ||
| mpt3sas_base.h | ||
| mpt3sas_config.c | ||
| mpt3sas_ctl.c | ||
| mpt3sas_ctl.h | ||
| mpt3sas_debug.h | ||
| mpt3sas_scsih.c | ||
| mpt3sas_transport.c | ||
| mpt3sas_trigger_diag.c | ||
| mpt3sas_trigger_diag.h | ||
| mpt3sas_warpdrive.c | ||