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Message-Id: <20231207011722.1220634-16-irogers@google.com>
Date: Wed, 6 Dec 2023 17:16:49 -0800
From: Ian Rogers <irogers@...gle.com>
To: 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>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
Nick Terrell <terrelln@...com>,
Kan Liang <kan.liang@...ux.intel.com>,
Andi Kleen <ak@...ux.intel.com>,
Kajol Jain <kjain@...ux.ibm.com>,
Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
Huacai Chen <chenhuacai@...nel.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Vincent Whitchurch <vincent.whitchurch@...s.com>,
"Steinar H. Gunderson" <sesse@...gle.com>,
Liam Howlett <liam.howlett@...cle.com>,
Miguel Ojeda <ojeda@...nel.org>,
Colin Ian King <colin.i.king@...il.com>,
Dmitrii Dolgov <9erthalion6@...il.com>,
Yang Jihong <yangjihong1@...wei.com>,
Ming Wang <wangming01@...ngson.cn>,
James Clark <james.clark@....com>,
K Prateek Nayak <kprateek.nayak@....com>,
Sean Christopherson <seanjc@...gle.com>,
Leo Yan <leo.yan@...aro.org>,
Ravi Bangoria <ravi.bangoria@....com>,
German Gomez <german.gomez@....com>,
Changbin Du <changbin.du@...wei.com>,
Paolo Bonzini <pbonzini@...hat.com>, Li Dong <lidong@...o.com>,
Sandipan Das <sandipan.das@....com>,
liuwenyu <liuwenyu7@...wei.com>, linux-kernel@...r.kernel.org,
linux-perf-users@...r.kernel.org,
Guilherme Amadio <amadio@...too.org>
Subject: [PATCH v6 15/47] perf debug: Expose debug file
Some dumping call backs need to be passed a FILE*. Expose debug file
via an accessor API for a consistent way to do this. Catch the
unlikely failure of it not being set. Switch two cases where stderr
was being used instead of debug_file.
Acked-by: Namhyung Kim <namhyung@...nel.org>
Signed-off-by: Ian Rogers <irogers@...gle.com>
---
tools/perf/util/debug.c | 22 +++++++++++++++-------
tools/perf/util/debug.h | 1 +
2 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index 88378c4c5dd9..e282b4ceb4d2 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -38,12 +38,21 @@ bool dump_trace = false, quiet = false;
int debug_ordered_events;
static int redirect_to_stderr;
int debug_data_convert;
-static FILE *debug_file;
+static FILE *_debug_file;
bool debug_display_time;
+FILE *debug_file(void)
+{
+ if (!_debug_file) {
+ pr_warning_once("debug_file not set");
+ debug_set_file(stderr);
+ }
+ return _debug_file;
+}
+
void debug_set_file(FILE *file)
{
- debug_file = file;
+ _debug_file = file;
}
void debug_set_display_time(bool set)
@@ -78,8 +87,8 @@ int veprintf(int level, int var, const char *fmt, va_list args)
if (use_browser >= 1 && !redirect_to_stderr) {
ui_helpline__vshow(fmt, args);
} else {
- ret = fprintf_time(debug_file);
- ret += vfprintf(debug_file, fmt, args);
+ ret = fprintf_time(debug_file());
+ ret += vfprintf(debug_file(), fmt, args);
}
}
@@ -107,9 +116,8 @@ static int veprintf_time(u64 t, const char *fmt, va_list args)
nsecs -= secs * NSEC_PER_SEC;
usecs = nsecs / NSEC_PER_USEC;
- ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
- secs, usecs);
- ret += vfprintf(stderr, fmt, args);
+ ret = fprintf(debug_file(), "[%13" PRIu64 ".%06" PRIu64 "] ", secs, usecs);
+ ret += vfprintf(debug_file(), fmt, args);
return ret;
}
diff --git a/tools/perf/util/debug.h b/tools/perf/util/debug.h
index f99468a7f681..de8870980d44 100644
--- a/tools/perf/util/debug.h
+++ b/tools/perf/util/debug.h
@@ -77,6 +77,7 @@ int eprintf_time(int level, int var, u64 t, const char *fmt, ...) __printf(4, 5)
int veprintf(int level, int var, const char *fmt, va_list args);
int perf_debug_option(const char *str);
+FILE *debug_file(void);
void debug_set_file(FILE *file);
void debug_set_display_time(bool set);
void perf_debug_setup(void);
--
2.43.0.rc2.451.g8631bc7472-goog
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