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s390/cpum_sf: Add raw data sampling to support the diagnostic-sampling function

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Also support the diagnostic-sampling function in addition to the basic-sampling
function.  Diagnostic-sampling data entries contain hardware model specific
sampling data and additional programs are required to analyze the data.

To deliver diagnostic-sampling, as well, as basis-sampling data entries to user
space, introduce support for sampling "raw data".  If this particular perf
sampling type (PERF_SAMPLE_RAW) is used, sampling data entries are copied
to user space.  External programs can then analyze these data.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Hendrik Brueckner
2013-12-13 11:42:44 +01:00
committed by Martin Schwidefsky
parent dd127b3b97
commit 7e75fc3ff4
5 changed files with 377 additions and 96 deletions
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21
arch/s390/kernel/perf_event.c
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@@ -139,16 +139,21 @@ static void print_debug_sf(void)
int cpu = smp_processor_id();
memset(&si, 0, sizeof(si));
if (qsi(&si)) {
pr_err("CPU[%i]: CPM_SF: qsi failed\n");
if (qsi(&si))
return;
}
pr_info("CPU[%i]: CPM_SF: as=%i es=%i cs=%i bsdes=%i dsdes=%i"
" min=%i max=%i cpu_speed=%i tear=%p dear=%p\n",
cpu, si.as, si.es, si.cs, si.bsdes, si.dsdes,
si.min_sampl_rate, si.max_sampl_rate, si.cpu_speed,
si.tear, si.dear);
pr_info("CPU[%i] CPUM_SF: basic=%i diag=%i min=%i max=%i cpu_speed=%i\n",
cpu, si.as, si.ad, si.min_sampl_rate, si.max_sampl_rate,
si.cpu_speed);
if (si.as)
pr_info("CPU[%i] CPUM_SF: Basic-sampling: a=%i e=%i c=%i"
" bsdes=%i tear=%p dear=%p\n", cpu,
si.as, si.es, si.cs, si.bsdes, si.tear, si.dear);
if (si.ad)
pr_info("CPU[%i] CPUM_SF: Diagnostic-sampling: a=%i e=%i c=%i"
" dsdes=%i tear=%p dear=%p\n", cpu,
si.ad, si.ed, si.cd, si.dsdes, si.tear, si.dear);
}
void perf_event_print_debug(void)