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authorTzvetomir Stoyanov <tstoyanov@vmware.com>2018-11-30 16:44:04 +0100
committerArnaldo Carvalho de Melo <acme@redhat.com>2018-12-17 18:55:52 +0100
commit477be10ca781bbee29d6a1da958d63d5c9a2d83b (patch)
tree2a9206086f7ae420e10983f107333c17200957e4 /tools/lib
parentperf report: Documentation average IPC and IPC coverage (diff)
downloadlinux-477be10ca781bbee29d6a1da958d63d5c9a2d83b.tar.xz
linux-477be10ca781bbee29d6a1da958d63d5c9a2d83b.zip
tools lib traceevent: Implement new API tep_get_ref()
This patch implements a new API of the tracevent library: int tep_get_ref(struct tep_handle *tep); The API returns the reference counter "ref_count" of the tep handler. As "struct tep_handle" is internal only, its members cannot be accessed by the library users, the API is used to get the reference counter. Signed-off-by: Tzvetomir Stoyanov <tstoyanov@vmware.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20181130154646.890615385@goodmis.org Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/traceevent/event-parse.c7
-rw-r--r--tools/lib/traceevent/event-parse.h1
2 files changed, 8 insertions, 0 deletions
diff --git a/tools/lib/traceevent/event-parse.c b/tools/lib/traceevent/event-parse.c
index 2b5cb33046ce..d1e6ee3d43cf 100644
--- a/tools/lib/traceevent/event-parse.c
+++ b/tools/lib/traceevent/event-parse.c
@@ -6730,6 +6730,13 @@ void tep_ref(struct tep_handle *pevent)
pevent->ref_count++;
}
+int tep_get_ref(struct tep_handle *tep)
+{
+ if (tep)
+ return tep->ref_count;
+ return 0;
+}
+
void tep_free_format_field(struct tep_format_field *field)
{
free(field->type);
diff --git a/tools/lib/traceevent/event-parse.h b/tools/lib/traceevent/event-parse.h
index 16bf4c890b6f..44ec26c72c2e 100644
--- a/tools/lib/traceevent/event-parse.h
+++ b/tools/lib/traceevent/event-parse.h
@@ -581,6 +581,7 @@ struct tep_handle *tep_alloc(void);
void tep_free(struct tep_handle *pevent);
void tep_ref(struct tep_handle *pevent);
void tep_unref(struct tep_handle *pevent);
+int tep_get_ref(struct tep_handle *tep);
/* access to the internal parser */
void tep_buffer_init(const char *buf, unsigned long long size);