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perf tools: Add debug prints for ordered events queue

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Adding some prints for ordered events queue, to help debug issues.

Adding debug_ordered_events debug variable to be able to enable ordered
events debug messages using:

  $ perf --debug ordered-events=2 report ...

Also using oe pointer in perf_session__queue_event instead of chained
session variable dereferencing.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: David Ahern <dsahern@gmail.com>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jean Pihet <jean.pihet@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-7p3mnnopjvsp9nmk9msqcfkm@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2014-07-11 14:49:54 +02:00
committed by Arnaldo Carvalho de Melo
parent 94786b67b5
commit cee3ab9caa
4 changed files with 72 additions and 2 deletions
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36
tools/perf/util/debug.c
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@@ -13,8 +13,12 @@
#include "util.h"
#include "target.h"
#define NSECS_PER_SEC 1000000000ULL
#define NSECS_PER_USEC 1000ULL
int verbose;
bool dump_trace = false, quiet = false;
int debug_ordered_events;
static int _eprintf(int level, int var, const char *fmt, va_list args)
{
@@ -42,6 +46,35 @@ int eprintf(int level, int var, const char *fmt, ...)
return ret;
}
static int __eprintf_time(u64 t, const char *fmt, va_list args)
{
int ret = 0;
u64 secs, usecs, nsecs = t;
secs = nsecs / NSECS_PER_SEC;
nsecs -= secs * NSECS_PER_SEC;
usecs = nsecs / NSECS_PER_USEC;
ret = fprintf(stderr, "[%13" PRIu64 ".%06" PRIu64 "] ",
secs, usecs);
ret += vfprintf(stderr, fmt, args);
return ret;
}
int eprintf_time(int level, int var, u64 t, const char *fmt, ...)
{
int ret = 0;
va_list args;
if (var >= level) {
va_start(args, fmt);
ret = __eprintf_time(t, fmt, args);
va_end(args);
}
return ret;
}
/*
* Overloading libtraceevent standard info print
* function, display with -v in perf.
@@ -110,7 +143,8 @@ static struct debug_variable {
const char *name;
int *ptr;
} debug_variables[] = {
{ .name = "verbose", .ptr = &verbose },
{ .name = "verbose", .ptr = &verbose },
{ .name = "ordered-events", .ptr = &debug_ordered_events},
{ .name = NULL, }
};