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authorDongsheng Yang <yangds.fnst@cn.fujitsu.com>2013-12-20 15:52:57 -0500
committerArnaldo Carvalho de Melo <acme@redhat.com>2013-12-23 16:49:49 -0300
commit995634650ef1f907196bd7e9ae45354124a80e47 (patch)
treeb7f00fda7bb4155f3f2c5177cac13017d2d5143b /tools/perf/util/event.c
parentfb50bb43d051d12aad9e2337d0d5d14d0d3dd281 (diff)
perf tools: Find the proc info under machine->root_dir.
When we synthesize the threads, we are looking for the infomation under /proc. But it is only for host. This patch look for the path of proc under machine->root_dir, then XXX__synthesize_threads() functions can support guest machines. Signed-off-by: Dongsheng Yang <yangds.fnst@cn.fujitsu.com> Cc: David Ahern <dsahern@gmail.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung.kim@lge.com> Link: http://lkml.kernel.org/r/927b937da9177a079abafe4532fa9c9b60b5c4b7.1387572416.git.yangds.fnst@cn.fujitsu.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/event.c')
-rw-r--r--tools/perf/util/event.c11
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 484e99464a0..a61726ea01a 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -129,7 +129,8 @@ static pid_t perf_event__synthesize_comm(struct perf_tool *tool,
goto out;
}
- snprintf(filename, sizeof(filename), "/proc/%d/task", pid);
+ snprintf(filename, sizeof(filename), "%s/proc/%d/task",
+ machine->root_dir, pid);
tasks = opendir(filename);
if (tasks == NULL) {
@@ -178,7 +179,8 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
FILE *fp;
int rc = 0;
- snprintf(filename, sizeof(filename), "/proc/%d/maps", pid);
+ snprintf(filename, sizeof(filename), "%s/proc/%d/maps",
+ machine->root_dir, pid);
fp = fopen(filename, "r");
if (fp == NULL) {
@@ -387,6 +389,7 @@ 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 +402,9 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
if (mmap_event == NULL)
goto out_free_comm;
- proc = opendir("/proc");
+ snprintf(proc_path, sizeof(proc_path), "%s/proc", machine->root_dir);
+ proc = opendir(proc_path);
+
if (proc == NULL)
goto out_free_mmap;