diff options
| author | Kalesh Singh <kaleshsingh@google.com> | 2022-03-11 17:41:52 -0800 |
|---|---|---|
| committer | Kalesh Singh <kaleshsingh@google.com> | 2022-11-22 15:21:38 +0000 |
| commit | 61488b893922a3b349d8ea98e7b7f9287a8640f5 (patch) | |
| tree | 0826fe92a08684f6246d6a7a0986f249d1a43e1a | |
| parent | 562bd8a1d4c8901044b349c5023193c773926f17 (diff) | |
| download | trace-cmd-61488b893922a3b349d8ea98e7b7f9287a8640f5.tar.gz | |
ANDROID: libtracecmd: Add pthread_set/get_affinity_np()
Implement pthread_setaffinity_np() and
pthread_getaffinity_np() in libtracecmd for Android.
Bug: 223905587
Change-Id: I8ae788cfb2d799993013c6fbaa9acb3e482977a0
Signed-off-by: Kalesh Singh <kaleshsingh@google.com>
| -rw-r--r-- | lib/trace-cmd/trace-timesync.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/lib/trace-cmd/trace-timesync.c b/lib/trace-cmd/trace-timesync.c index cc44af38..bbefda20 100644 --- a/lib/trace-cmd/trace-timesync.c +++ b/lib/trace-cmd/trace-timesync.c @@ -41,6 +41,28 @@ struct tsync_probe_request_msg { unsigned short cpu; } __packed; +#ifdef __ANDROID__ +#define __NR_sched_setaffinity 122 +#define __NR_sched_getaffinity 123 + +static int pthread_setaffinity_np(pthread_t thread, size_t cpusetsize, const cpu_set_t *cpuset) +{ + return -syscall(__NR_sched_setaffinity, thread, cpusetsize, cpuset); +} + +static int pthread_getaffinity_np(pthread_t thread, size_t cpusetsize, const cpu_set_t *cpuset) +{ + long ret = syscall(__NR_sched_getaffinity, thread, cpusetsize, cpuset); + + if (ret < 0) + return ret; + if (ret < cpusetsize) + memset((char *)cpuset+ret, 0, cpusetsize-ret); + + return 0; +} +#endif /* __ANDROID__ */ + static struct tsync_proto *tsync_proto_list; static struct tsync_proto *tsync_proto_find(const char *proto_name) |