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Date: Tue, 12 Apr 2022 08:48:14 -0700
From: Ian Rogers <irogers@...gle.com>
To: John Garry <john.garry@...wei.com>, Will Deacon <will@...nel.org>,
Mathieu Poirier <mathieu.poirier@...aro.org>,
Leo Yan <leo.yan@...aro.org>,
Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Jiri Olsa <jolsa@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
James Clark <james.clark@....com>,
Alexandre Truong <alexandre.truong@....com>,
German Gomez <german.gomez@....com>,
Ian Rogers <irogers@...gle.com>,
Dave Marchevsky <davemarchevsky@...com>,
Song Liu <songliubraving@...com>,
Ravi Bangoria <ravi.bangoria@....com>,
Li Huafei <lihuafei1@...wei.com>,
"Martin Liška" <mliska@...e.cz>,
William Cohen <wcohen@...hat.com>,
Riccardo Mancini <rickyman7@...il.com>,
Masami Hiramatsu <mhiramat@...nel.org>,
Thomas Richter <tmricht@...ux.ibm.com>,
Lexi Shao <shaolexi@...wei.com>,
Remi Bernon <rbernon@...eweavers.com>,
Michael Petlan <mpetlan@...hat.com>,
Denis Nikitin <denik@...omium.org>,
linux-arm-kernel@...ts.infradead.org,
linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: Stephane Eranian <eranian@...gle.com>
Subject: [PATCH v2 1/4] perf symbols: Always do architecture specific fixups
The change:
https://lore.kernel.org/lkml/20220317135536.805-1-mpetlan@redhat.com/
modified the condition for architecture specific fixups motivated by a
PowerPC case. So that architectures can independently modify their
condition, move the if into the called architecture symbols__fixup_end
function and always call it.
---
tools/perf/arch/arm64/util/machine.c | 14 ++++++++------
tools/perf/arch/powerpc/util/machine.c | 14 ++++++++------
tools/perf/arch/s390/util/machine.c | 14 ++++++++------
tools/perf/util/symbol.c | 6 +++---
4 files changed, 27 insertions(+), 21 deletions(-)
diff --git a/tools/perf/arch/arm64/util/machine.c b/tools/perf/arch/arm64/util/machine.c
index d2ce31e28cd7..1cc33b323c3f 100644
--- a/tools/perf/arch/arm64/util/machine.c
+++ b/tools/perf/arch/arm64/util/machine.c
@@ -20,13 +20,15 @@
void arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
{
- if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
+ if (p->end == p->start || p->end != c->start) {
+ if ((strchr(p->name, '[') && strchr(c->name, '[') == NULL) ||
(strchr(p->name, '[') == NULL && strchr(c->name, '[')))
- /* Limit range of last symbol in module and kernel */
- p->end += SYMBOL_LIMIT;
- else
- p->end = c->start;
- pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ /* Limit range of last symbol in module and kernel */
+ p->end += SYMBOL_LIMIT;
+ else
+ p->end = c->start;
+ pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ }
}
void arch__add_leaf_frame_record_opts(struct record_opts *opts)
diff --git a/tools/perf/arch/powerpc/util/machine.c b/tools/perf/arch/powerpc/util/machine.c
index e652a1aa8132..88a8abf98a57 100644
--- a/tools/perf/arch/powerpc/util/machine.c
+++ b/tools/perf/arch/powerpc/util/machine.c
@@ -16,10 +16,12 @@
void arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
{
- if (strchr(p->name, '[') == NULL && strchr(c->name, '['))
- /* Limit the range of last kernel symbol */
- p->end += page_size;
- else
- p->end = c->start;
- pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ if (p->end == p->start || p->end != c->start) {
+ if (strchr(p->name, '[') == NULL && strchr(c->name, '['))
+ /* Limit the range of last kernel symbol */
+ p->end += page_size;
+ else
+ p->end = c->start;
+ pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ }
}
diff --git a/tools/perf/arch/s390/util/machine.c b/tools/perf/arch/s390/util/machine.c
index 7644a4f6d4a4..0b750738ec68 100644
--- a/tools/perf/arch/s390/util/machine.c
+++ b/tools/perf/arch/s390/util/machine.c
@@ -44,10 +44,12 @@ int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)
*/
void arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
{
- if (strchr(p->name, '[') == NULL && strchr(c->name, '['))
- /* Last kernel symbol mapped to end of page */
- p->end = roundup(p->end, page_size);
- else
- p->end = c->start;
- pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ if (p->end == p->start || p->end != c->start) {
+ if (strchr(p->name, '[') == NULL && strchr(c->name, '['))
+ /* Last kernel symbol mapped to end of page */
+ p->end = roundup(p->end, page_size);
+ else
+ p->end = c->start;
+ pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ }
}
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index dea0fc495185..394ad493c343 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -103,7 +103,8 @@ static int prefix_underscores_count(const char *str)
void __weak arch__symbols__fixup_end(struct symbol *p, struct symbol *c)
{
- p->end = c->start;
+ if (p->end == p->start || p->end != c->start)
+ p->end = c->start;
}
const char * __weak arch__normalize_symbol_name(const char *name)
@@ -231,8 +232,7 @@ void symbols__fixup_end(struct rb_root_cached *symbols)
prev = curr;
curr = rb_entry(nd, struct symbol, rb_node);
- if (prev->end == prev->start || prev->end != curr->start)
- arch__symbols__fixup_end(prev, curr);
+ arch__symbols__fixup_end(prev, curr);
}
/* Last entry */
--
2.35.1.1178.g4f1659d476-goog
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