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perf kvm: Limit repetitive guestmount message to once per directory

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After 7ed97ad use of the guestmount option without a subdir for *each*
VM generates an error message for each sample related to that VM. Once
per VM is enough.

Signed-off-by: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
David Ahern 2012-07-20 17:25:51 -06:00 • committed by Arnaldo Carvalho de Melo
commit c80c3c2690
1 changed files with 10 additions and 1 deletions
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11
tools/perf/util/map.c
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@ -8,6 +8,7 @@
#include <unistd.h>
#include "map.h"
#include "thread.h"
#include "strlist.h"
const char *map_type__name[MAP__NR_TYPES] = {
[MAP__FUNCTION] = "Functions",
@ -695,7 +696,15 @@ struct machine *machines__findnew(struct rb_root *self, pid_t pid)
(symbol_conf.guestmount)) {
sprintf(path, "%s/%d", symbol_conf.guestmount, pid);
if (access(path, R_OK)) {
pr_err("Can't access file %s\n", path);
static struct strlist *seen;
if (!seen)
seen = strlist__new(true, NULL);
if (!strlist__has_entry(seen, path)) {
pr_err("Can't access file %s\n", path);
strlist__add(seen, path);
}
machine = NULL;
goto out;
}