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perf_event: Add alignment-faults and emulation-faults software events

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Add two more software events that are common to many cpus.

Alignment faults: When a load or store is not aligned properly.

Emulation faults: When an instruction is emulated in software.

Both cause a very significant slowdown (100x or worse), so identifying and
fixing them is very important.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Anton Blanchard
2009-10-18 01:09:29 +00:00
committed by Paul Mackerras
parent 81cd5ae303
commit f7d7986060
5 changed files with 12 additions and 0 deletions
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4
tools/perf/util/parse-events.c
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@@ -46,6 +46,8 @@ static struct event_symbol event_symbols[] = {
{ CSW(PAGE_FAULTS_MAJ), "major-faults", "" },
{ CSW(CONTEXT_SWITCHES), "context-switches", "cs" },
{ CSW(CPU_MIGRATIONS), "cpu-migrations", "migrations" },
{ CSW(ALIGNMENT_FAULTS), "alignment-faults", "" },
{ CSW(EMULATION_FAULTS), "emulation-faults", "" },
};
#define __PERF_EVENT_FIELD(config, name) \
@@ -74,6 +76,8 @@ static const char *sw_event_names[] = {
"CPU-migrations",
"minor-faults",
"major-faults",
"alignment-faults",
"emulation-faults",
};
#define MAX_ALIASES 8