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Date: Tue, 12 Apr 2022 08:48:17 -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 4/4] perf symbols: More specific architecture end fixing
Make the conditions used for symbol fixup closer to the comments. The
logic aims to combine the current conditions as last modified in:
https://lore.kernel.org/lkml/20220317135536.805-1-mpetlan@redhat.com/
---
tools/perf/arch/arm64/util/machine.c | 19 ++++++++++---------
tools/perf/arch/powerpc/util/machine.c | 18 +++++++++---------
tools/perf/arch/s390/util/machine.c | 17 +++++++++--------
3 files changed, 28 insertions(+), 26 deletions(-)
diff --git a/tools/perf/arch/arm64/util/machine.c b/tools/perf/arch/arm64/util/machine.c
index 54fb41de9931..f258c1ebac03 100644
--- a/tools/perf/arch/arm64/util/machine.c
+++ b/tools/perf/arch/arm64/util/machine.c
@@ -18,16 +18,17 @@
#define SYMBOL_LIMIT (1 << 12) /* 4K */
-void arch__symbols__fixup_end(struct symbol *p, struct symbol *c,
- bool is_kernel __maybe_unused)
+void arch__symbols__fixup_end(struct symbol *p, struct symbol *c, bool is_kernel)
{
- 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;
+ if (is_kernel && (p->end == p->start || p->end != c->start) &&
+ ((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;
+ pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ } else if (p->end == p->start) {
+ /* Expand empty symbols. */
+ p->end = c->start;
pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
}
}
diff --git a/tools/perf/arch/powerpc/util/machine.c b/tools/perf/arch/powerpc/util/machine.c
index a732601f951e..689a48040b64 100644
--- a/tools/perf/arch/powerpc/util/machine.c
+++ b/tools/perf/arch/powerpc/util/machine.c
@@ -14,16 +14,16 @@
* Therefore do not fill this gap and do not assign it to the kernel dso map.
*/
-void arch__symbols__fixup_end(struct symbol *p, struct symbol *c,
- bool is_kernel __maybe_unused)
+void arch__symbols__fixup_end(struct symbol *p, struct symbol *c, bool is_kernel)
)
{
- 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);
+ if (is_kernel && (p->end == p->start || p->end != c->start) &&
+ strchr(p->name, '[') == NULL && strchr(c->name, '[')) {
+ /* Limit the range of last kernel symbol */
+ p->end += page_size;
+ } else if (p->end == p->start) {
+ /* Expand empty symbols. */
+ 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 8622a1b78748..790d98a39c83 100644
--- a/tools/perf/arch/s390/util/machine.c
+++ b/tools/perf/arch/s390/util/machine.c
@@ -42,15 +42,16 @@ int arch__fix_module_text_start(u64 *start, u64 *size, const char *name)
* and beginning of first module's text segment is very big.
* Therefore do not fill this gap and do not assign it to the kernel dso map.
*/
-void arch__symbols__fixup_end(struct symbol *p, struct symbol *c,
- bool is_kernel __maybe_unused)
+void arch__symbols__fixup_end(struct symbol *p, struct symbol *c, bool is_kernel)
{
- 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;
+ if (is_kernel && (p->end == p->start || p->end != c->start) &&
+ strchr(p->name, '[') == NULL && strchr(c->name, '[')) {
+ /* Last kernel symbol mapped to end of page */
+ p->end = roundup(p->end, page_size);
+ pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
+ } else if (p->end == p->start) {
+ /* Expand empty symbols. */
+ p->end = c->start;
pr_debug4("%s sym:%s end:%#" PRIx64 "\n", __func__, p->name, p->end);
}
}
--
2.35.1.1178.g4f1659d476-goog
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