We are using XXX__synthesize_threads() function to synthesize the
symbols of user space for host. This patch add support of guest
for these functions.
Signed-off-by: Dongsheng Yang <yangds.f...@cn.fujitsu.com>
---
tools/perf/util/event.c | 33 +++++++++++++++++++++++++++------
1 file changed, 27 insertions(+), 6 deletions(-)
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 6948768..6e36bbb 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -106,8 +106,12 @@ static pid_t perf_event__synthesize_comm(struct perf_tool
*tool,
memset(&event->comm, 0, sizeof(event->comm));
- tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
- sizeof(event->comm.comm));
+ if (machine__is_host(machine))
+ tgid = perf_event__get_comm_tgid(pid, event->comm.comm,
+ sizeof(event->comm.comm));
+ else
+ tgid = machine->pid;
+
if (tgid < 0)
goto out;
@@ -129,7 +133,11 @@ static pid_t perf_event__synthesize_comm(struct perf_tool
*tool,
goto out;
}
- snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(filename, sizeof(filename), "%s/proc/%d/task",
+ machine->root_dir, pid);
tasks = opendir(filename);
if (tasks == NULL) {
@@ -178,7 +186,11 @@ static int perf_event__synthesize_mmap_events(struct
perf_tool *tool,
FILE *fp;
int rc = 0;
- snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
+ machine->root_dir, pid);
fp = fopen(filename, "r");
if (fp == NULL) {
@@ -218,7 +230,10 @@ static int perf_event__synthesize_mmap_events(struct
perf_tool *tool,
/*
* Just like the kernel, see __perf_event_mmap in
kernel/perf_event.c
*/
- event->header.misc = PERF_RECORD_MISC_USER;
+ if (machine__is_host(machine))
+ event->header.misc = PERF_RECORD_MISC_USER;
+ else
+ event->header.misc = PERF_RECORD_MISC_GUEST_USER;
if (prot[2] != 'x') {
if (!mmap_data || prot[0] != 'r')
@@ -387,6 +402,7 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
struct machine *machine, bool mmap_data)
{
DIR *proc;
+ char proc_path[PATH_MAX];
struct dirent dirent, *next;
union perf_event *comm_event, *mmap_event;
int err = -1;
@@ -399,7 +415,12 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
if (mmap_event == NULL)
goto out_free_comm;
- proc = opendir("/proc");
+ if (machine__is_default_guest(machine))
+ return 0;
+
+ snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
+ proc = opendir(proc_path);
+
if (proc == NULL)
goto out_free_mmap;
--
1.8.2.1
--
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