Add missed oom support to libproc

Add missed oom support to libproc
Signed-off-by: Werner Fink <werner@suse.de>

diff --git a/proc/readproc.c b/proc/readproc.c
index 890e77a7d0d6f597997b3209f1ebe96932e8b0f1..e12e284ec07c674140d3fc5ba1ab6da8e316352c 100644 (file)
--- a/proc/readproc.c
+++ b/proc/readproc.c
@@ -365,6 +365,19 @@ LEAVE(0x220);
 }
 
 ///////////////////////////////////////////////////////////////////////
+#ifdef ZAP_SUSEONLY
+static void oomscore2proc(const char* S, proc_t *restrict P)
+{
+    sscanf(S, "%d", &P->oom_score);
+}
+
+static void oomadj2proc(const char* S, proc_t *restrict P)
+{
+    sscanf(S, "%d", &P->oom_adj);
+}
+#endif
+///////////////////////////////////////////////////////////////////////
+
 
 // Reads /proc/*/stat files, being careful not to trip over processes with
 // names like ":-) 1 2 3 4 5 6".
@@ -637,7 +650,14 @@ static proc_t* simple_readproc(PROCTAB *restrict const PT, proc_t *restrict cons
        p->environ = file2strvec(path, "environ");
     else
         p->environ = NULL;
-
+#ifdef ZAP_SUSEONLY
+    if (unlikely(flags & PROC_FILLOOM)) {
+       if (likely( file2str(path, "oom_score", sbuf, sizeof sbuf) != -1 ))
+           oomscore2proc(sbuf, p);
+       if (likely( file2str(path, "oom_adj", sbuf, sizeof sbuf) != -1 ))
+           oomadj2proc(sbuf, p);
+    } /* struct has been zeroed out before, so no worries about clearing garbage here */
+#endif
     if(linux_version_code>=LINUX_VERSION(2,6,24) && (flags & PROC_FILLCGROUP))
        p->cgroup = file2strvec(path, "cgroup");        /* read /proc/#/cgroup */
     else

diff --git a/proc/readproc.h b/proc/readproc.h
index 0b2c46a757902849f517e0645ff6135cbb9baaa6..3404c191f64d34878b5e95e3dad25fb22b93803d 100644 (file)
--- a/proc/readproc.h
+++ b/proc/readproc.h
@@ -140,6 +140,10 @@ typedef struct proc_t {
        tpgid,          // stat            terminal process group id
        exit_signal,    // stat            might not be SIGCHLD
        processor;      // stat            current (or most recent?) CPU
+#ifdef ZAP_SUSEONLY
+       int oom_score,  // oom_score       (badness for OOM killer)
+           oom_adj;    // oom_adj         (adjustment to OOM score)
+#endif
        char **cgroup;  // cgroup          current cgroup, looks like a classic filepath
 } proc_t;
 
@@ -239,6 +243,7 @@ extern proc_t * get_proc_stats(pid_t pid, proc_t *p);
 #define PROC_FILLWCHAN       0x0080 // look up WCHAN name
 #define PROC_FILLARG         0x0100 // alloc and fill in `cmdline'
 #define PROC_FILLCGROUP      0x0200 // alloc and fill in `cgroup`
+#define PROC_FILLOOM         0x0400 // alloc and fill in oom_score, oom_adj
 
 #define PROC_LOOSE_TASKS     0x2000 // threat threads as if they were processes