diff options
Diffstat (limited to 'tools/xentrace')
| -rw-r--r-- | tools/xentrace/xentrace.c | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/tools/xentrace/xentrace.c b/tools/xentrace/xentrace.c index cce5469c47..db652a2283 100644 --- a/tools/xentrace/xentrace.c +++ b/tools/xentrace/xentrace.c @@ -58,7 +58,8 @@ typedef struct settings_st { unsigned long timeout; unsigned long memory_buffer; uint8_t discard:1, - disable_tracing:1; + disable_tracing:1, + start_disabled:1; } settings_t; struct t_struct { @@ -659,6 +660,10 @@ static int monitor_tbufs(void) /* setup access to trace buffers */ get_tbufs(&tbufs_mfn, &tinfo_size); + + if ( opts.start_disabled ) + disable_tbufs(); + tbufs = map_tbufs(tbufs_mfn, num, tinfo_size); size = tbufs->t_info->tbuf_size * XC_PAGE_SIZE; @@ -791,6 +796,9 @@ static void usage(void) " it exits. Selecting this option will tell it to\n" \ " keep tracing on. Traces will be collected in\n" \ " Xen's trace buffers until they become full.\n" \ +" -X --start-disabled Setup trace buffers and listen, but don't enable\n" \ +" tracing. (Useful if tracing will be enabled by\n" \ +" else.)\n" \ " -T --time-interval=s Run xentrace for s seconds and quit.\n" \ " -?, --help Show this message\n" \ " -V, --version Print program version\n" \ @@ -914,12 +922,13 @@ static void parse_args(int argc, char **argv) { "memory-buffer", required_argument, 0, 'M' }, { "discard-buffers", no_argument, 0, 'D' }, { "dont-disable-tracing", no_argument, 0, 'x' }, + { "start-disabled", no_argument, 0, 'X' }, { "help", no_argument, 0, '?' }, { "version", no_argument, 0, 'V' }, { 0, 0, 0, 0 } }; - while ( (option = getopt_long(argc, argv, "t:s:c:e:S:r:T:M:Dx?V", + while ( (option = getopt_long(argc, argv, "t:s:c:e:S:r:T:M:DxX?V", long_options, NULL)) != -1) { switch ( option ) @@ -957,6 +966,10 @@ static void parse_args(int argc, char **argv) opts.disable_tracing = 0; break; + case 'X': /* Start disabled */ + opts.start_disabled = 1; + break; + case 'T': opts.timeout = argtol(optarg, 0); break; @@ -993,6 +1006,7 @@ int main(int argc, char **argv) opts.cpu_mask = 0; opts.disk_rsvd = 0; opts.disable_tracing = 1; + opts.start_disabled = 0; opts.timeout = 0; parse_args(argc, argv); |