Fix up various perf aspects related to ppc64's usage of dot functions:
- ignore leading '.' when generating event names and when looking for
existing events.
- use the proper prefix when ignoring SyS symbol lookups.
Signed-off-by: Naveen N. Rao <naveen.n....@linux.vnet.ibm.com>
---
tools/perf/util/probe-event.c | 8 ++++++++
tools/perf/util/symbol.c | 6 ++++++
2 files changed, 14 insertions(+)
diff --git a/tools/perf/util/probe-event.c b/tools/perf/util/probe-event.c
index c7e01ef..d465f7c 100644
--- a/tools/perf/util/probe-event.c
+++ b/tools/perf/util/probe-event.c
@@ -2080,6 +2080,10 @@ static int get_new_event_name(char *buf, size_t len,
const char *base,
{
int i, ret;
+ /* Skip the leading dot on powerpc */
+ if (*base == '.')
+ base++;
+
/* Try no suffix */
ret = e_snprintf(buf, len, "%s", base);
if (ret < 0) {
@@ -2538,6 +2542,10 @@ int del_perf_probe_events(struct strlist *dellist)
event = str;
}
+ /* Skip the leading dot on powerpc */
+ if (event && *event == '.')
+ event++;
+
ret = e_snprintf(buf, 128, "%s:%s", group, event);
if (ret < 0) {
pr_err("Failed to copy event.");
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 0783311..cc04475 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -137,6 +137,12 @@ static int choose_best_symbol(struct symbol *syma, struct
symbol *symb)
if (na >= 10 && !strncmp(syma->name, "compat_SyS", 10))
return SYMBOL_B;
+ /* On powerpc, ignore the dot variants */
+ if (na >= 4 && !strncmp(syma->name, ".SyS", 4))
+ return SYMBOL_B;
+ if (na >= 11 && !strncmp(syma->name, ".compat_SyS", 11))
+ return SYMBOL_B;
+
return SYMBOL_A;
}
--
2.1.3
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