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fa1332a801
'perf mem/c2c' uses IBS Op PMU on AMD platforms. IBS Op PMU on Zen5 uarch has added support for Load Latency filtering. Implement 'perf mem/c2c' --ldlat using IBS Op Load Latency filtering capability. Some subtle differences between AMD and other arch: o --ldlat is disabled by default on AMD o Supported values are 128 to 2048. Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com> Cc: Ananth Narayan <ananth.narayan@amd.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joe Mario <jmario@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Santosh Shukla <santosh.shukla@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20250429035938.1301-4-ravi.bangoria@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
34 lines
1.1 KiB
C
34 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "linux/string.h"
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#include "util/map_symbol.h"
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#include "util/mem-events.h"
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#include "mem-events.h"
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#define MEM_LOADS_AUX 0x8203
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#define E(t, n, s, l, a) { .tag = t, .name = n, .event_name = s, .ldlat = l, .aux_event = a }
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struct perf_mem_event perf_mem_events_intel[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "%s/mem-loads,ldlat=%u/P", "mem-loads", true, 0),
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E("ldlat-stores", "%s/mem-stores/P", "mem-stores", false, 0),
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E(NULL, NULL, NULL, false, 0),
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};
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struct perf_mem_event perf_mem_events_intel_aux[PERF_MEM_EVENTS__MAX] = {
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E("ldlat-loads", "{%s/mem-loads-aux/,%s/mem-loads,ldlat=%u/}:P", "mem-loads", true, MEM_LOADS_AUX),
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E("ldlat-stores", "%s/mem-stores/P", "mem-stores", false, 0),
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E(NULL, NULL, NULL, false, 0),
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};
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struct perf_mem_event perf_mem_events_amd[PERF_MEM_EVENTS__MAX] = {
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E(NULL, NULL, NULL, false, 0),
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E(NULL, NULL, NULL, false, 0),
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E("mem-ldst", "%s//", NULL, false, 0),
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};
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struct perf_mem_event perf_mem_events_amd_ldlat[PERF_MEM_EVENTS__MAX] = {
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E(NULL, NULL, NULL, false, 0),
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E(NULL, NULL, NULL, false, 0),
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E("mem-ldst", "%s/ldlat=%u/", NULL, true, 0),
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};
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