X-Git-Url: http://git.lttng.org./?a=blobdiff_plain;f=ltt-debugfs-abi.c;h=6327d09a65d713fde5e6dd36dbf269163f9ad257;hb=ef200626172d529e42df4331f2abe92f875bc64a;hp=730826674cda7a82ccce3da3d9a4779eb078f6d2;hpb=12a313a5f879a71a0449b860e7f181c50a3f22f8;p=lttng-modules.git diff --git a/ltt-debugfs-abi.c b/ltt-debugfs-abi.c index 73082667..6327d09a 100644 --- a/ltt-debugfs-abi.c +++ b/ltt-debugfs-abi.c @@ -20,6 +20,8 @@ * - Takes an instrumentation source as parameter * - e.g. tracepoints, dynamic_probes... * - Takes instrumentation source specific arguments. + * + * Dual LGPL v2.1/GPL v2 license. */ #include @@ -30,6 +32,7 @@ #include #include "wrapper/vmalloc.h" /* for wrapper_vmalloc_sync_all() */ #include "wrapper/ringbuffer/vfs.h" +#include "wrapper/poll.h" #include "ltt-debugfs-abi.h" #include "ltt-events.h" #include "ltt-tracer.h" @@ -152,8 +155,28 @@ long lttng_abi_add_context(struct file *file, switch (context_param.ctx) { case LTTNG_KERNEL_CONTEXT_PID: return lttng_add_pid_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_PRIO: + return lttng_add_prio_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_NICE: + return lttng_add_nice_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_VPID: + return lttng_add_vpid_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_TID: + return lttng_add_tid_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_VTID: + return lttng_add_vtid_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_PPID: + return lttng_add_ppid_to_ctx(ctx); + case LTTNG_KERNEL_CONTEXT_VPPID: + return lttng_add_vppid_to_ctx(ctx); case LTTNG_KERNEL_CONTEXT_PERF_COUNTER: - return -ENOSYS; + context_param.u.perf_counter.name[LTTNG_SYM_NAME_LEN - 1] = '\0'; + return lttng_add_perf_counter_to_ctx(context_param.u.perf_counter.type, + context_param.u.perf_counter.config, + context_param.u.perf_counter.name, + ctx); + case LTTNG_KERNEL_CONTEXT_COMM: + return lttng_add_comm_to_ctx(ctx); default: return -EINVAL; } @@ -173,6 +196,8 @@ long lttng_abi_add_context(struct file *file, * Returns the LTTng kernel tracer version * LTTNG_KERNEL_TRACEPOINT_LIST * Returns a file descriptor listing available tracepoints + * LTTNG_KERNEL_WAIT_QUIESCENT + * Returns after all previously running probes have completed * * The returned session will be deleted when its file descriptor is closed. */ @@ -187,6 +212,9 @@ long lttng_ioctl(struct file *file, unsigned int cmd, unsigned long arg) (struct lttng_kernel_tracer_version __user *) arg); case LTTNG_KERNEL_TRACEPOINT_LIST: return lttng_abi_tracepoint_list(); + case LTTNG_KERNEL_WAIT_QUIESCENT: + synchronize_trace(); + return 0; default: return -ENOIOCTLCMD; } @@ -317,10 +345,10 @@ fd_error: * This ioctl implements lttng commands: * LTTNG_KERNEL_CHANNEL * Returns a LTTng channel file descriptor - * LTTNG_KERNEL_SESSION_START - * Starts tracing session - * LTTNG_KERNEL_SESSION_STOP - * Stops tracing session + * LTTNG_KERNEL_ENABLE + * Enables tracing for a session (weak enable) + * LTTNG_KERNEL_DISABLE + * Disables tracing for a session (strong disable) * LTTNG_KERNEL_METADATA * Returns a LTTng metadata file descriptor * @@ -337,9 +365,11 @@ long lttng_session_ioctl(struct file *file, unsigned int cmd, unsigned long arg) (struct lttng_kernel_channel __user *) arg, PER_CPU_CHANNEL); case LTTNG_KERNEL_SESSION_START: - return ltt_session_start(session); + case LTTNG_KERNEL_ENABLE: + return ltt_session_enable(session); case LTTNG_KERNEL_SESSION_STOP: - return ltt_session_stop(session); + case LTTNG_KERNEL_DISABLE: + return ltt_session_disable(session); case LTTNG_KERNEL_METADATA: return lttng_abi_create_channel(file, (struct lttng_kernel_channel __user *) arg, @@ -493,6 +523,10 @@ fd_error: * Returns an event file descriptor or failure. * LTTNG_KERNEL_CONTEXT * Prepend a context field to each event in the channel + * LTTNG_KERNEL_ENABLE + * Enable recording for events in this channel (weak enable) + * LTTNG_KERNEL_DISABLE + * Disable recording for events in this channel (strong disable) * * Channel and event file descriptors also hold a reference on the session. */ @@ -510,6 +544,10 @@ long lttng_channel_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return lttng_abi_add_context(file, (struct lttng_kernel_context __user *) arg, &channel->ctx, channel->session); + case LTTNG_KERNEL_ENABLE: + return ltt_channel_enable(channel); + case LTTNG_KERNEL_DISABLE: + return ltt_channel_disable(channel); default: return -ENOIOCTLCMD; } @@ -539,8 +577,6 @@ long lttng_metadata_ioctl(struct file *file, unsigned int cmd, unsigned long arg } } -/* TODO: poll */ -#if 0 /** * lttng_channel_poll - lttng stream addition/removal monitoring * @@ -554,10 +590,12 @@ unsigned int lttng_channel_poll(struct file *file, poll_table *wait) if (file->f_mode & FMODE_READ) { poll_wait_set_exclusive(wait); - poll_wait(file, &channel->notify_wait, wait); + poll_wait(file, channel->ops->get_hp_wait_queue(channel->chan), + wait); - /* TODO: identify when the channel is being finalized. */ - if (finalized) + if (channel->ops->is_disabled(channel->chan)) + return POLLERR; + if (channel->ops->is_finalized(channel->chan)) return POLLHUP; else return POLLIN | POLLRDNORM; @@ -565,7 +603,6 @@ unsigned int lttng_channel_poll(struct file *file, poll_table *wait) return mask; } -#endif //0 static int lttng_channel_release(struct inode *inode, struct file *file) @@ -579,10 +616,7 @@ int lttng_channel_release(struct inode *inode, struct file *file) static const struct file_operations lttng_channel_fops = { .release = lttng_channel_release, -/* TODO */ -#if 0 .poll = lttng_channel_poll, -#endif //0 .unlocked_ioctl = lttng_channel_ioctl, #ifdef CONFIG_COMPAT .compat_ioctl = lttng_channel_ioctl, @@ -605,13 +639,12 @@ static const struct file_operations lttng_metadata_fops = { * @arg: command arg * * This ioctl implements lttng commands: - * LTTNG_KERNEL_STREAM - * Returns an event stream file descriptor or failure. - * (typically, one event stream records events from one CPU) - * LTTNG_KERNEL_EVENT - * Returns an event file descriptor or failure. * LTTNG_KERNEL_CONTEXT * Prepend a context field to each record of this event + * LTTNG_KERNEL_ENABLE + * Enable recording for this event (weak enable) + * LTTNG_KERNEL_DISABLE + * Disable recording for this event (strong disable) */ static long lttng_event_ioctl(struct file *file, unsigned int cmd, unsigned long arg) @@ -623,6 +656,10 @@ long lttng_event_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return lttng_abi_add_context(file, (struct lttng_kernel_context __user *) arg, &event->ctx, event->chan->session); + case LTTNG_KERNEL_ENABLE: + return ltt_event_enable(event); + case LTTNG_KERNEL_DISABLE: + return ltt_event_disable(event); default: return -ENOIOCTLCMD; }