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Commit fb3a0b61 authored by Thomas Richter's avatar Thomas Richter Committed by Martin Schwidefsky
Browse files

s390/cpum_cf: Add kernel message exaplanations 



The CPU Measurement facility for counters and counter set
rework adds a few new kernel messages to the system log.
Add an explanation for some of these.

Signed-off-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent fe5908bc

Documentation/kmsg/s390/cpum_cf_common

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/*?

 * Text: "CPU[%i] Counter data was lost\n"

 * Severity: Error

 * Parameter:

 *   @1: CPU identifier

 * Description:

 * The kernel could not extract data provided by the Performance Measurement Unit

 * (PMU) fast enough, some data is overwritten.

 * User action:

 * None

 */



/*?

 * Text: "CPU[%i] MT counter data was lost\n"

 * Severity: Warning

 * Parameter:

 *   @1: CPU identifier

 * Description:

 * The kernel could not extract data provided by the Performance Measurement Unit

 * (PMU) fast enough, some data is overwritten.

 * User action:

 * None

 */



/*?

 * Text: "Registering for CPU-measurement alerts failed with rc=%i\n"

 * Severity: Error

 * Parameter:

 *   @1: Return code of failed interrupt handler registration

 * Description:

 * Please insert description here

 * User action:

 * Reboot. If the problem persists, gather Linux debug data and report

 * the problem to your support organization.

 */

/*? Text: "%s: %d output lines suppressed due to ratelimiting\n" */

Documentation/kmsg/s390/cpum_cf_diag

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/*? Text: "%s: %d output lines suppressed due to ratelimiting\n" */

/*? Text: "cpum_cf_diag counter set compare error in set %i\n" */

/*? Text: "Registration of s390dbf(cpum_cf_diag) failed\n" */

/*? Text: "Registration of PMU(cpum_cf_diag) failed with rc=%i\n" */



/*?

 * Text: "Enabling the performance measuring unit failed with rc=%x\n"

 * Severity: Error

 * Parameter:

 *   @1: Error code returned by PMU enable function

 * Description:

 * The CPU Measurement Facilitiy for counters needs to be enabled to extract

 * counter data.

 * User action:

 * To use the CPU-measurement counter facility, authorize the LPAR for each

 * counter set you want to use. Customize the LPAR activation profile and modify

 * the Counter Facility Security Options. Then reboot.

 * If the problem persists, gather Linux debug data and report the

 * problem to your support organization.

 */



/*?

 * Text: "Disabling the performance measuring unit failed with rc=%x\n"

 * Severity: Error

 * Parameter:

 *   @1: Error code returned by PMU disable function

 * Description:

 * The CPU Measurement Facilitiy for counters is disabled to stop extraction

 * of counter data.

 * User action:

 * Reboot. If the problem persists, gather Linux debug data and report the

 * problem to your support organization.

 */



/*?

 * Text: "Insufficient memory for PMU(cpum_cf_diag) need=%zu\n"

 * Severity: Error

 * Parameter:

 *   @1: Required amount of bytes needed to store the counter sets.

 * Description:

 * The preallocted memory to store counter sets is too small.

 * User action:

 * If the problem persists, gather Linux debug data and report the

 * problem to your support organization.

 */