mirror of
https://github.com/torvalds/linux.git
synced 2024-12-08 20:21:34 +00:00
perf callchain: Introduce callchain_cursor__copy()
The callchain_cursor__copy() function is to save current callchain captured by a cursor. It'll be used to keep callchains when switching to idle task for each cpu. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Minchan Kim <minchan@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20161206034010.6499-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
parent
6fa94258ce
commit
571f1eb9b9
@ -1234,3 +1234,30 @@ out:
|
||||
}
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
int callchain_cursor__copy(struct callchain_cursor *dst,
|
||||
struct callchain_cursor *src)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
callchain_cursor_reset(dst);
|
||||
callchain_cursor_commit(src);
|
||||
|
||||
while (true) {
|
||||
struct callchain_cursor_node *node;
|
||||
|
||||
node = callchain_cursor_current(src);
|
||||
if (node == NULL)
|
||||
break;
|
||||
|
||||
rc = callchain_cursor_append(dst, node->ip, node->map, node->sym,
|
||||
node->branch, &node->branch_flags,
|
||||
node->nr_loop_iter, node->samples);
|
||||
if (rc)
|
||||
break;
|
||||
|
||||
callchain_cursor_advance(src);
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
@ -216,6 +216,9 @@ static inline void callchain_cursor_advance(struct callchain_cursor *cursor)
|
||||
cursor->pos++;
|
||||
}
|
||||
|
||||
int callchain_cursor__copy(struct callchain_cursor *dst,
|
||||
struct callchain_cursor *src);
|
||||
|
||||
struct option;
|
||||
struct hist_entry;
|
||||
|
||||
|
Loading…
Reference in New Issue
Block a user