Add CPU hotplug notifier for ltt debugfs ABI, add pollwait exclusive wrapper

[lttng-modules.git] / ltt-debugfs-abi.c

diff --git a/ltt-debugfs-abi.c b/ltt-debugfs-abi.c
index afdc09a61ad8eb0dcc1e39be75ec8be03d6a2169..fb6c789f1e0da0f4aa32bba7775fb86d439b90f0 100644 (file)
--- 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 <linux/module.h>
@@ -30,6 +32,7 @@
 #include <linux/slab.h>
 #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 +155,16 @@ 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_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:
@@ -541,8 +552,6 @@ 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
  *
@@ -555,11 +564,11 @@ unsigned int lttng_channel_poll(struct file *file, poll_table *wait)
        unsigned int mask = 0;
 
        if (file->f_mode & FMODE_READ) {
-               poll_wait_set_exclusive(wait);
-               poll_wait(file, &channel->notify_wait, wait);
+               init_poll_funcptr(wait, wrapper_pollwait_exclusive);
+               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_finalized(channel->chan))
                        return POLLHUP;
                else
                        return POLLIN | POLLRDNORM;
@@ -567,7 +576,6 @@ 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)
@@ -581,10 +589,7 @@ 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,