wenchao-hao
/
lmkd
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

lmkd: Add a tracepoint for each kill with kill parameters am: 34928bb817 am: a2394fb247 

Original change: https://android-review.googlesource.com/c/platform/system/memory/lmkd/+/1782391

Change-Id: I80cdfcc2f323b16ea9f3518ac2b317be6c7b3f2a
This commit is contained in:
Suren Baghdasaryan 2021-08-03 16:19:23 +00:00 committed by Automerger Merge Worker
parent 6deecd4aa5 a2394fb247
commit dc2e03adf9
1 changed files with 16 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
lmkd.cpp
View File

@ -65,13 +65,20 @@
#define ATRACE_TAG ATRACE_TAG_ALWAYS #define ATRACE_TAG ATRACE_TAG_ALWAYS
#include <cutils/trace.h> #include <cutils/trace.h>
#define TRACE_KILL_START(pid) ATRACE_INT(__FUNCTION__, pid); static inline void trace_kill_start(int pid, const char *desc) {
#define TRACE_KILL_END() ATRACE_INT(__FUNCTION__, 0); ATRACE_INT("kill_one_process", pid);
ATRACE_BEGIN(desc);
}
static inline void trace_kill_end() {
ATRACE_END();
ATRACE_INT("kill_one_process", 0);
}
#else /* LMKD_TRACE_KILLS */ #else /* LMKD_TRACE_KILLS */
#define TRACE_KILL_START(pid) ((void)(pid)) static inline void trace_kill_start(int, const char *) {}
#define TRACE_KILL_END() ((void)0) static inline void trace_kill_end() {}
#endif /* LMKD_TRACE_KILLS */ #endif /* LMKD_TRACE_KILLS */
@ -2132,6 +2139,7 @@ static int kill_one_process(struct proc* procp, int min_oom_score, struct kill_i
int64_t rss_kb; int64_t rss_kb;
int64_t swap_kb; int64_t swap_kb;
char buf[PAGE_SIZE]; char buf[PAGE_SIZE];
char desc[LINE_MAX];
if (!read_proc_status(pid, buf, sizeof(buf))) { if (!read_proc_status(pid, buf, sizeof(buf))) {
goto out; goto out;
@ -2160,7 +2168,9 @@ static int kill_one_process(struct proc* procp, int min_oom_score, struct kill_i
mem_st = stats_read_memory_stat(per_app_memcg, pid, uid, rss_kb * 1024, swap_kb * 1024); mem_st = stats_read_memory_stat(per_app_memcg, pid, uid, rss_kb * 1024, swap_kb * 1024);
TRACE_KILL_START(pid); snprintf(desc, sizeof(desc), "lmk,%d,%d,%d,%d,%d", pid, (int)ki->kill_reason, procp->oomadj,
min_oom_score, ki->max_thrashing);
trace_kill_start(pid, desc);
/* CAP_KILL required */ /* CAP_KILL required */
if (pidfd < 0) { if (pidfd < 0) {
@ -2171,7 +2181,7 @@ static int kill_one_process(struct proc* procp, int min_oom_score, struct kill_i
r = pidfd_send_signal(pidfd, SIGKILL, NULL, 0); r = pidfd_send_signal(pidfd, SIGKILL, NULL, 0);
} }
TRACE_KILL_END(); trace_kill_end();
if (r) { if (r) {
stop_wait_for_proc_kill(false); stop_wait_for_proc_kill(false);