diff options
Diffstat (limited to 'trace')
| -rw-r--r-- | trace/ftrace.c | 15 | ||||
| -rw-r--r-- | trace/ftrace.h | 1 | ||||
| -rw-r--r-- | trace/meson.build | 8 |
3 files changed, 23 insertions, 1 deletions
diff --git a/trace/ftrace.c b/trace/ftrace.c index 9749543d9b..6875faedb9 100644 --- a/trace/ftrace.c +++ b/trace/ftrace.c @@ -38,6 +38,21 @@ static int find_mount(char *mount_point, const char *fstype) return ret; } +void ftrace_write(const char *fmt, ...) +{ + char ftrace_buf[MAX_TRACE_STRLEN]; + int unused __attribute__ ((unused)); + int trlen; + va_list ap; + + va_start(ap, fmt); + trlen = vsnprintf(ftrace_buf, MAX_TRACE_STRLEN, fmt, ap); + va_end(ap); + + trlen = MIN(trlen, MAX_TRACE_STRLEN - 1); + unused = write(trace_marker_fd, ftrace_buf, trlen); +} + bool ftrace_init(void) { char mount_point[PATH_MAX]; diff --git a/trace/ftrace.h b/trace/ftrace.h index cb5e35d217..16c122816d 100644 --- a/trace/ftrace.h +++ b/trace/ftrace.h @@ -8,5 +8,6 @@ extern int trace_marker_fd; bool ftrace_init(void); +G_GNUC_PRINTF(1, 2) void ftrace_write(const char *fmt, ...); #endif /* TRACE_FTRACE_H */ diff --git a/trace/meson.build b/trace/meson.build index 9c42a57a05..d89a0db82a 100644 --- a/trace/meson.build +++ b/trace/meson.build @@ -1,5 +1,5 @@ system_ss.add(files('control-target.c', 'trace-hmp-cmds.c')) - +trace_rs_targets = [] trace_events_files = [] foreach item : [ '.' ] + trace_events_subdirs + qapi_trace_events if item in qapi_trace_events @@ -24,6 +24,11 @@ foreach item : [ '.' ] + trace_events_subdirs + qapi_trace_events input: trace_events_file, command: [ tracetool, group, '--format=c', '@INPUT@', '@OUTPUT@' ], depend_files: tracetool_depends) + trace_rs = custom_target(fmt.format('trace', 'rs'), + output: fmt.format('trace', 'rs'), + input: trace_events_file, + command: [ tracetool, group, '--format=rs', '@INPUT@', '@OUTPUT@' ], + depend_files: tracetool_depends) if 'ust' in get_option('trace_backends') trace_ust_h = custom_target(fmt.format('trace-ust', 'h'), output: fmt.format('trace-ust', 'h'), @@ -34,6 +39,7 @@ foreach item : [ '.' ] + trace_events_subdirs + qapi_trace_events genh += trace_ust_h endif trace_ss.add(trace_h, trace_c) + trace_rs_targets += trace_rs if 'dtrace' in get_option('trace_backends') trace_dtrace = custom_target(fmt.format('trace-dtrace', 'dtrace'), output: fmt.format('trace-dtrace', 'dtrace'), |