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powerpc/perf: Add mem access events to sysfs 

Add mem-loads/mem-stores events to sysfs.
The event is formed based on raw event encoding.
Primary PMU event used here is PM_MRK_INST_CMPL
along with MMCRA[SM] modes and Thresholding bit

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Madhavan Srinivasan 2018-12-10 09:29:05 +05:30 committed by Michael Ellerman
parent 865a9432d1
commit ab4510e9ac
2 changed files with 28 additions and 0 deletions
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24
arch/powerpc/perf/power9-events-list.h
View File

@ -97,3 +97,27 @@ EVENT(PM_MRK_DTLB_MISS_64K, 0x3d156)
EVENT(PM_DTLB_MISS_16M, 0x4c056)
EVENT(PM_DTLB_MISS_1G, 0x4c05a)
EVENT(PM_MRK_DTLB_MISS_16M, 0x4c15e)
/*
* Memory Access Events
*
* Primary PMU event used here is PM_MRK_INST_CMPL (0x401e0)
* To enable capturing of memory profiling, these MMCRA bits
* needs to be programmed and corresponding raw event format
* encoding.
*
* MMCRA bits encoding needed are
* SM (Sampling Mode)
* EM (Eligibility for Random Sampling)
* TECE (Threshold Event Counter Event)
* TS (Threshold Start Event)
* TE (Threshold End Event)
*
* Corresponding Raw Encoding bits:
* sample [EM,SM]
* thresh_sel (TECE)
* thresh start (TS)
* thresh end (TE)
*/
EVENT(MEM_LOADS, 0x34340401e0)
EVENT(MEM_STORES, 0x343c0401e0)

4
arch/powerpc/perf/power9-pmu.c
View File

@ -160,6 +160,8 @@ GENERIC_EVENT_ATTR(branch-instructions, PM_BR_CMPL);
GENERIC_EVENT_ATTR(branch-misses, PM_BR_MPRED_CMPL);
GENERIC_EVENT_ATTR(cache-references, PM_LD_REF_L1);
GENERIC_EVENT_ATTR(cache-misses, PM_LD_MISS_L1_FIN);
GENERIC_EVENT_ATTR(mem-loads, MEM_LOADS);
GENERIC_EVENT_ATTR(mem-stores, MEM_STORES);
CACHE_EVENT_ATTR(L1-dcache-load-misses, PM_LD_MISS_L1_FIN);
CACHE_EVENT_ATTR(L1-dcache-loads, PM_LD_REF_L1);
@ -185,6 +187,8 @@ static struct attribute *power9_events_attr[] = {
GENERIC_EVENT_PTR(PM_BR_MPRED_CMPL),
GENERIC_EVENT_PTR(PM_LD_REF_L1),
GENERIC_EVENT_PTR(PM_LD_MISS_L1_FIN),
GENERIC_EVENT_PTR(MEM_LOADS),
GENERIC_EVENT_PTR(MEM_STORES),
CACHE_EVENT_PTR(PM_LD_MISS_L1_FIN),
CACHE_EVENT_PTR(PM_LD_REF_L1),
CACHE_EVENT_PTR(PM_L1_PREF),