cleanup-trace-events.pl: New

Simple script to drop unused events and fix up source file comments.
The next few commits put it to use.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
slavio_misc: Fix slavio_led_mem_readw/_writew tracepoints

Broken since they got added in commit 97bf485.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
milkymist-minimac2: Fix minimac2_read/_write tracepoints

Broken in milkymist-minimac.c from the start (commit 0742454),
faithfully moved to milkymist-minimac2.c (commit 57aa265).

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
trace-events: Drop unused events

Dropped event                           Unused since
mirror_cow                              884fea4
paio_complete                           47e6b25
paio_cancel                             47e6b25
usb_ehci_data                           0ce668b
megasas_qf_dequeue                      never used
megasas_handle_frame                    never used
megasas_io_continue                     never used
megasas_iovec_map_failed                never used
megasas_dcmd_map_failed                 never used
milkymist_softusb_mouse_event           4c15ba9
xen_map_block                           6506e4f
xen_unmap_block                         6506e4f
qemu_spice_start                        67be672
qemu_spice_stop                         67be672

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
trace-events: Fix up source file comments

They're all wrong since (at least) Paolo's big source tree
reorganization.  Need to shuffle some event declarations around to
keep them under the correct source file comment.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>