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| author | Dongsheng Yang <yangds.fnst@cn.fujitsu.com> | 2013-12-20 21:52:57 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-12-23 20:49:49 +0100 |
| commit | 995634650ef1f907196bd7e9ae45354124a80e47 (patch) | |
| tree | b7f00fda7bb4155f3f2c5177cac13017d2d5143b /tools/perf/util/event.c | |
| parent | perf tools: Add support for PERF_RECORD_MISC_GUEST_USER in thread__find_addr_... (diff) | |
| download | linux-995634650ef1f907196bd7e9ae45354124a80e47.tar.xz linux-995634650ef1f907196bd7e9ae45354124a80e47.zip | |
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 '')
| -rw-r--r-- | tools/perf/util/event.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c index 484e99464a00..a61726ea01a9 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; |