X-Git-Url: https://git.lttng.org/?p=lttng-tools.git;a=blobdiff_plain;f=ltt-sessiond%2Fmain.c;h=cbd6a3f3f6a7469ddc2be72fb5b313555bf37989;hp=e069696b0c621df39fedbb71454bc20bd54006c1;hb=333f285e479a22c99122aa92b988b10c597551e4;hpb=f57244dee1499978eeee0d8438750e84cffe2a68;ds=sidebyside diff --git a/ltt-sessiond/main.c b/ltt-sessiond/main.c index e069696b0..cbd6a3f3f 100644 --- a/ltt-sessiond/main.c +++ b/ltt-sessiond/main.c @@ -648,6 +648,23 @@ error: return ret; } +/* + * init_kernel_tracer + * + * Setup necessary data for kernel tracer action. + */ +static void init_kernel_tracer(void) +{ + /* Set the global kernel tracer fd */ + kernel_tracer_fd = open(DEFAULT_KERNEL_TRACER_PATH, O_RDWR); + if (kernel_tracer_fd < 0) { + WARN("No kernel tracer available"); + kernel_tracer_fd = 0; + } + + DBG("Kernel tracer fd %d", kernel_tracer_fd); +} + /* * process_client_msg * @@ -690,11 +707,13 @@ static int process_client_msg(struct command_ctx *cmd_ctx) case KERNEL_OPEN_METADATA: case KERNEL_START_TRACE: case KERNEL_STOP_TRACE: - /* TODO: reconnect to kernel tracer to check if - * it's loadded */ + /* Kernel tracer check */ if (kernel_tracer_fd == 0) { - ret = LTTCOMM_KERN_NA; - goto error; + init_kernel_tracer(); + if (kernel_tracer_fd == 0) { + ret = LTTCOMM_KERN_NA; + goto error; + } } break; } @@ -1472,23 +1491,6 @@ error: return ret; } -/* - * init_kernel_tracer - * - * Setup necessary data for kernel tracer action. - */ -static void init_kernel_tracer(void) -{ - /* Set the global kernel tracer fd */ - kernel_tracer_fd = open(DEFAULT_KERNEL_TRACER_PATH, O_RDWR); - if (kernel_tracer_fd < 0) { - WARN("No kernel tracer available"); - kernel_tracer_fd = 0; - } - - DBG("Kernel tracer fd %d", kernel_tracer_fd); -} - /* * set_kconsumerd_sockets *