Commit 5a64e942 authored by Denis V. Lunev's avatar Denis V. Lunev Committed by Kevin Wolf
Browse files

qcow2: add tracepoints for qcow2_co_write_zeroes 



This patch follows guidelines of all other tracepoints in qcow2, like ones
in qcow2_co_writev. I think that they should dump values in the same
quantities or be changed all together.

Signed-off-by: default avatarDenis V. Lunev <den@openvz.org>
CC: Eric Blake <eblake@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1463476543-3087-4-git-send-email-den@openvz.org>
[eblake: typo fix in commit message]
Signed-off-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent ba142846

block/qcow2.c

+5 −0
Original line number Diff line number Diff line
@@ -2437,6 +2437,9 @@ static coroutine_fn int qcow2_co_write_zeroes(BlockDriverState *bs, 
    int head = sector_num % s->cluster_sectors;

    int tail = (sector_num + nb_sectors) % s->cluster_sectors;



    trace_qcow2_write_zeroes_start_req(qemu_coroutine_self(), sector_num,

                                       nb_sectors);



    if (head != 0 || tail != 0) {

        int64_t cl_start = sector_num - head;
@@ -2459,6 +2462,8 @@ static coroutine_fn int qcow2_co_write_zeroes(BlockDriverState *bs, 
        qemu_co_mutex_lock(&s->lock);

    }



    trace_qcow2_write_zeroes(qemu_coroutine_self(), sector_num, nb_sectors);



    /* Whatever is left can use real zero clusters */

    ret = qcow2_zero_clusters(bs, sector_num << BDRV_SECTOR_BITS, nb_sectors);

    qemu_co_mutex_unlock(&s->lock);

trace-events

+2 −0
Original line number Diff line number Diff line
@@ -611,6 +611,8 @@ qcow2_writev_done_req(void *co, int ret) "co %p ret %d" 
qcow2_writev_start_part(void *co) "co %p"

qcow2_writev_done_part(void *co, int cur_nr_sectors) "co %p cur_nr_sectors %d"

qcow2_writev_data(void *co, uint64_t offset) "co %p offset %" PRIx64

qcow2_write_zeroes_start_req(void *co, int64_t sector, int nb_sectors) "co %p sector %" PRIx64 " nb_sectors %d"

qcow2_write_zeroes(void *co, int64_t sector, int nb_sectors) "co %p sector %" PRIx64 " nb_sectors %d"



# block/qcow2-cluster.c

qcow2_alloc_clusters_offset(void *co, uint64_t offset, int num) "co %p offset %" PRIx64 " num %d"