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501464538a
papi/SOURCES/papi-bz1908126.patch
eabdullin 501464538a import CS papi-5.6.0-19.el8
2023-09-27 13:53:05 +00:00

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commit 77ee6b54f4080ca27b7efcb4c91679d0f1e090b5
Author: Anthony Castaldo <TonyCastaldo@icl.utk.edu>
Date: Fri Jan 24 10:25:36 2020 -0500
New libpfm4 contains "aliased" pmus for backward compatibility,
amd64_fam17h == amd64_fam17h_zen1; this causes us to put BOTH pmus
into the PMUs supported string and double the events in native_avail.
This update recognizes when aliases exist (the names must be hard-coded)
and uses only one of the most recent name.
diff --git a/src/components/perf_event/pe_libpfm4_events.c b/src/components/perf_event/pe_libpfm4_events.c
index 3b5f8d13f..3262608cd 100644
--- a/src/components/perf_event/pe_libpfm4_events.c
+++ b/src/components/perf_event/pe_libpfm4_events.c
@@ -31,6 +31,9 @@
// used to step through the attributes when enumerating events
static int attr_idx;
+/* alias flags to handle amd_fam17h, amd_fam17h_zen1 both present PMUs*/
+static int amd64_fam17h_zen1_present = 0;
+
/** @class find_existing_event
* @brief looks up an event, returns it if it exists
*
@@ -482,7 +485,13 @@ static struct native_event_t *allocate_native_event(
*
* @returns returns a libpfm event number
* @retval PAPI_ENOEVENT Could not find an event
- *
+ * Operational note: _pe_libpfm4_init() must be called first to set
+ * flags for synonymous PMUs. At this writing only
+ * amd64_fam17h_zen1_present is defined.
+ * Operational note: We indirectly return the pmu_idx within the
+ * event data; the calling code uses that to set
+ * pmu_idx for subsequent calls. All we do is find
+ * the next valid pmu, if any.
*/
static int
@@ -511,6 +520,12 @@ get_first_event_next_pmu(int pmu_idx, int pmu_type)
break;
}
+ if ((ret==PFM_SUCCESS) && amd64_fam17h_zen1_present && strcmp(pinfo.name, "amd64_fam17h") == 0) {
+ /* Skip as if invalid; we want the PMU amd64_fam17h_zen1 instead. */
+ pmu_idx++;
+ continue;
+ }
+
if ((ret==PFM_SUCCESS) && pmu_is_present_and_right_type(&pinfo,pmu_type)) {
pidx=pinfo.first_event;
@@ -1159,6 +1174,35 @@ _pe_libpfm4_init(papi_vector_t *component, int cidx,
event_table->default_pmu.size = sizeof(pfm_pmu_info_t);
retval=pfm_get_pmu_info(0, &(event_table->default_pmu));
+ SUBDBG("Prescan for aliases.")
+ /* We have to see if we have aliases in there as separate PMUs, */
+ /* we don't want both PMUs with all the events duplicated. */
+ /* For aliases, either is valid alone, but if both are present */
+ /* specify a preference in the code. */
+ /* Alias: amd64_fam17h_zen1 over amd64_fam17h. */
+ /* Alias flags are static ints global to this file. */
+ i=0;
+ while(1) {
+ memset(&pinfo,0,sizeof(pfm_pmu_info_t));
+ pinfo.size = sizeof(pfm_pmu_info_t);
+ retval=pfm_get_pmu_info(i, &pinfo);
+
+ /* We're done if we hit an invalid PMU entry */
+ /* We can't check against PFM_PMU_MAX as that might not */
+ /* match if libpfm4 is dynamically linked */
+
+ if (retval==PFM_ERR_INVAL) {
+ break;
+ }
+
+ if ( (retval==PFM_SUCCESS) && (pinfo.name != NULL) &&
+ (pmu_is_present_and_right_type(&pinfo,pmu_type)) &&
+ (strcmp(pinfo.name,"amd64_fam17h_zen1") == 0) ) {
+ amd64_fam17h_zen1_present = 1;
+ }
+ i++;
+ }
+
SUBDBG("Detected pmus:\n");
i=0;
while(1) {
@@ -1177,6 +1221,12 @@ _pe_libpfm4_init(papi_vector_t *component, int cidx,
if ((retval==PFM_SUCCESS) && (pinfo.name != NULL) &&
(pmu_is_present_and_right_type(&pinfo,pmu_type))) {
+ /* skip if it is amd64_fam17h and zen1 is also present. */
+ if (strcmp(pinfo.name,"amd64_fam17h") == 0 && amd64_fam17h_zen1_present) {
+ i++;
+ continue;
+ }
+
SUBDBG("\t%d %s %s %d\n",i,
pinfo.name,pinfo.desc,pinfo.type);
@@ -1193,11 +1243,9 @@ _pe_libpfm4_init(papi_vector_t *component, int cidx,
/* Hack to have "default core" PMU */
if ( (pinfo.type==PFM_PMU_TYPE_CORE) &&
strcmp(pinfo.name,"ix86arch")) {
-
- SUBDBG("\t %s is default\n",pinfo.name);
- memcpy(&(event_table->default_pmu),
- &pinfo,sizeof(pfm_pmu_info_t));
- found_default++;
+ memcpy(&(event_table->default_pmu),
+ &pinfo,sizeof(pfm_pmu_info_t));
+ found_default++;
}
}
commit 79fe2a025afb8acb317032030c8847c9cbfd0162
Author: Masahiko, Yamada <yamada.masahiko@fujitsu.com>
Date: Tue Jan 5 13:45:34 2021 +0900
Get model_string for ARM processor from pfm_get_pmu_info() function
On ARM processors, the model_string does not appear in /proc/cpuinfo.
Instead of looking at the /proc/cpuinfo information, you can look at the lscpu command information at the following URL:.
https://github.com/google/cpu_features/issues/26
http://suihkulokki.blogspot.com/2018/02/making-sense-of-proccpuinfo-on-arm.html
The libpfm4 library identifies the ARM processor type from the "CPU implement" and "CPU part" in the /proc/cpuinfo information.
The papi library can use the pfm_get_pmu_info() function from the libpfm4 library to obtain a string identifying the ARM processor type.
diff --git a/src/components/perf_event/pe_libpfm4_events.c b/src/components/perf_event/pe_libpfm4_events.c
index a84819cc0..744851ff0 100644
--- a/src/components/perf_event/pe_libpfm4_events.c
+++ b/src/components/perf_event/pe_libpfm4_events.c
@@ -1149,6 +1149,7 @@ _pe_libpfm4_init(papi_vector_t *component, int cidx,
pfm_err_t retval = PFM_SUCCESS;
pfm_pmu_info_t pinfo;
+ unsigned int strSize;
/* allocate the native event structure */
event_table->num_native_events=0;
@@ -1247,6 +1248,13 @@ _pe_libpfm4_init(papi_vector_t *component, int cidx,
&pinfo,sizeof(pfm_pmu_info_t));
found_default++;
}
+ if ( (pinfo.type==PFM_PMU_TYPE_CORE) &&
+ ( _papi_hwi_system_info.hw_info.vendor == PAPI_VENDOR_ARM)) {
+ if (strlen(_papi_hwi_system_info.hw_info.model_string) == 0) {
+ strSize = sizeof(_papi_hwi_system_info.hw_info.model_string);
+ strncpy( _papi_hwi_system_info.hw_info.model_string, pinfo.desc, strSize - 1);
+ }
+ }
}
if (pmu_type==PMU_TYPE_UNCORE) {
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