[lttng-dev] [PATCH lttng-tools] Fix: Warn that kernel loglevels are unsupported

[Jérémie Galarneau]

Warn the user when the log level option is used when the kernel domain
is selected. Also, don't show the log level in the confirmation message
when kernel events are selected.

Fixes Bug #645

Signed-off-by: Jérémie Galarneau <jeremie.galarneau at efficios.com>
---
 src/bin/lttng/commands/enable_events.c | 14 +++++---------
 1 file changed, 5 insertions(+), 9 deletions(-)

diff --git a/src/bin/lttng/commands/enable_events.c b/src/bin/lttng/commands/enable_events.c
index a7b70c3..2dff63b 100644
--- a/src/bin/lttng/commands/enable_events.c
+++ b/src/bin/lttng/commands/enable_events.c
@@ -346,6 +346,9 @@ static int enable_events(char *session_name)
 			ret = CMD_ERROR;
 			goto error;
 		}
+		if (opt_loglevel) {
+			WARN("Kernel loglevels are not supported.");
+		}
 	}
 
 	/* Create lttng domain */
@@ -419,7 +422,7 @@ static int enable_events(char *session_name)
 
 			switch (opt_event_type) {
 			case LTTNG_EVENT_TRACEPOINT:
-				if (opt_loglevel) {
+				if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
 					MSG("All %s tracepoints are enabled in channel %s for loglevel %s",
 							get_domain_str(dom.type),
 							print_channel_name(channel_name),
@@ -428,7 +431,6 @@ static int enable_events(char *session_name)
 					MSG("All %s tracepoints are enabled in channel %s",
 							get_domain_str(dom.type),
 							print_channel_name(channel_name));
-
 				}
 				break;
 			case LTTNG_EVENT_SYSCALL:
@@ -438,7 +440,7 @@ static int enable_events(char *session_name)
 				}
 				break;
 			case LTTNG_EVENT_ALL:
-				if (opt_loglevel) {
+				if (opt_loglevel && dom.type != LTTNG_DOMAIN_KERNEL) {
 					MSG("All %s events are enabled in channel %s for loglevel %s",
 							get_domain_str(dom.type),
 							print_channel_name(channel_name),
@@ -533,12 +535,6 @@ static int enable_events(char *session_name)
 				goto error;
 			}
 
-			if (opt_loglevel) {
-				MSG("Kernel loglevels are not supported.");
-				ret = CMD_UNSUPPORTED;
-				goto error;
-			}
-
 			/* kernel loglevels not implemented */
 			ev.loglevel_type = LTTNG_EVENT_LOGLEVEL_ALL;
 		} else if (opt_userspace) {		/* User-space tracer action */
-- 
1.8.4.2