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blkdebug: add "remove_break" command

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This adds "remove_break" command which is the reverse of blkdebug
command "break": it removes all breakpoints with given tag and resumes
all the requests.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Fam Zheng
2013-11-20 10:01:54 +08:00
committed by Kevin Wolf
parent 5b43dbb699
commit 4cc70e9337
5 changed files with 65 additions and 0 deletions
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27
block/blkdebug.c
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@@ -605,6 +605,31 @@ static int blkdebug_debug_resume(BlockDriverState *bs, const char *tag)
return -ENOENT;
}
static int blkdebug_debug_remove_breakpoint(BlockDriverState *bs,
const char *tag)
{
BDRVBlkdebugState *s = bs->opaque;
BlkdebugSuspendedReq *r;
BlkdebugRule *rule, *next;
int i, ret = -ENOENT;
for (i = 0; i < BLKDBG_EVENT_MAX; i++) {
QLIST_FOREACH_SAFE(rule, &s->rules[i], next, next) {
if (rule->action == ACTION_SUSPEND &&
!strcmp(rule->options.suspend.tag, tag)) {
remove_rule(rule);
ret = 0;
}
}
}
QLIST_FOREACH(r, &s->suspended_reqs, next) {
if (!strcmp(r->tag, tag)) {
qemu_coroutine_enter(r->co, NULL);
ret = 0;
}
}
return ret;
}
static bool blkdebug_debug_is_suspended(BlockDriverState *bs, const char *tag)
{
@@ -639,6 +664,8 @@ static BlockDriver bdrv_blkdebug = {
.bdrv_debug_event = blkdebug_debug_event,
.bdrv_debug_breakpoint = blkdebug_debug_breakpoint,
.bdrv_debug_remove_breakpoint
= blkdebug_debug_remove_breakpoint,
.bdrv_debug_resume = blkdebug_debug_resume,
.bdrv_debug_is_suspended = blkdebug_debug_is_suspended,
};