rpm: run binary package generation via thread pools

This greatly reduces build times when there is a large amount of small
rpm packages to produce. The patches are rather invasive,
and so will be submitted upstream.

(From OE-Core rev: 964a6eb4732df462008883c4bb003f801777dfad)

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

5 files changed, 759 insertions, 0 deletions

diff --git a/meta/recipes-devtools/rpm/files/0001-Split-binary-package-building-into-a-separate-functi.patch b/meta/recipes-devtools/rpm/files/0001-Split-binary-package-building-into-a-separate-functi.patch
new file mode 100644
index 0000000000..6e44f0b7fc
--- /dev/null
+++ b/meta/recipes-devtools/rpm/files/0001-Split-binary-package-building-into-a-separate-functi.patch
@@ -0,0 +1,84 @@
+From 721a660a507d6d062e7aecafad886c643970a5d5 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Thu, 25 May 2017 18:15:27 +0300
+Subject: [PATCH 1/4] Split binary package building into a separate function
+
+So that it can be run as a thread pool task.
+
+Upstream-Status: Submitted [https://github.com/rpm-software-management/rpm/pull/226]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+---
+ build/pack.c | 33 +++++++++++++++++++++------------
+ 1 file changed, 21 insertions(+), 12 deletions(-)
+
+diff --git a/build/pack.c b/build/pack.c
+index 518f4e92a..ccfd614cc 100644
+--- a/build/pack.c
++++ b/build/pack.c
+@@ -546,18 +546,13 @@ static rpmRC checkPackages(char *pkgcheck)
+     return RPMRC_OK;
+ }
+ 
+-rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
++static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int cheating, char** filename)
+ {
+-    rpmRC rc;
+-    const char *errorString;
+-    Package pkg;
+-    char *pkglist = NULL;
+-
+-    for (pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
+-       char *fn;
++       const char *errorString;
++       rpmRC rc = RPMRC_OK;
+ 
+        if (pkg->fileList == NULL)
+-           continue;
++           return rc;
+ 
+        if ((rc = processScriptFiles(spec, pkg)))
+            return rc;
+@@ -587,7 +582,7 @@ rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
+                     headerGetString(pkg->header, RPMTAG_NAME), errorString);
+                return RPMRC_FAIL;
+            }
+-           fn = rpmGetPath("%{_rpmdir}/", binRpm, NULL);
++           *filename = rpmGetPath("%{_rpmdir}/", binRpm, NULL);
+            if ((binDir = strchr(binRpm, '/')) != NULL) {
+                struct stat st;
+                char *dn;
+@@ -609,14 +604,28 @@ rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
+            free(binRpm);
+        }
+ 
+-       rc = writeRPM(pkg, NULL, fn, NULL);
++       rc = writeRPM(pkg, NULL, *filename, NULL);
+        if (rc == RPMRC_OK) {
+            /* Do check each written package if enabled */
+-           char *pkgcheck = rpmExpand("%{?_build_pkgcheck} ", fn, NULL);
++           char *pkgcheck = rpmExpand("%{?_build_pkgcheck} ", *filename, NULL);
+            if (pkgcheck[0] != ' ') {
+                rc = checkPackages(pkgcheck);
+            }
+            free(pkgcheck);
++       }
++       return rc;
++}
++
++rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
++{
++    rpmRC rc;
++    Package pkg;
++    char *pkglist = NULL;
++
++    for (pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
++       char *fn = NULL;
++       rc = packageBinary(spec, pkg, cookie, cheating, &fn);
++       if (rc == RPMRC_OK) {
+            rstrcat(&pkglist, fn);
+            rstrcat(&pkglist, " ");
+        }
+-- 
+2.11.0
+
diff --git a/meta/recipes-devtools/rpm/files/0002-Run-binary-package-creation-via-thread-pools.patch b/meta/recipes-devtools/rpm/files/0002-Run-binary-package-creation-via-thread-pools.patch
new file mode 100644
index 0000000000..d10041c2e1
--- /dev/null
+++ b/meta/recipes-devtools/rpm/files/0002-Run-binary-package-creation-via-thread-pools.patch
@@ -0,0 +1,127 @@
+From 513200cf76758de4668312c628d6362bdabfaf4b Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Thu, 25 May 2017 19:30:20 +0300
+Subject: [PATCH 1/3] Run binary package creation via thread pools.
+
+Upstream-Status: Submitted [https://github.com/rpm-software-management/rpm/pull/226]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+---
+ build/pack.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++-----------
+ configure.ac |  3 +++
+ 2 files changed, 70 insertions(+), 14 deletions(-)
+
+diff --git a/build/pack.c b/build/pack.c
+index ccfd614cc..ed5b9ab4e 100644
+--- a/build/pack.c
++++ b/build/pack.c
+@@ -616,25 +616,78 @@ static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int ch
+        return rc;
+ }
+ 
+-rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
++struct binaryPackageTaskData
+ {
+-    rpmRC rc;
+     Package pkg;
++    char *filename;
++    rpmRC result;
++    struct binaryPackageTaskData *next;
++};
++
++static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const char *cookie, int cheating)
++{
++    struct binaryPackageTaskData *tasks = NULL;
++    struct binaryPackageTaskData *task = NULL;
++    struct binaryPackageTaskData *prev = NULL;
++
++    for (Package pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
++        task = rcalloc(1, sizeof(*task));
++        task->pkg = pkg;
++        if (pkg == spec->packages) {
++            // the first package needs to be processed ahead of others, as they copy
++            // changelog data from it, and so otherwise data races would happen
++            task->result = packageBinary(spec, pkg, cookie, cheating, &(task->filename));
++            rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
++            tasks = task;
++        }
++        if (prev != NULL) {
++            prev->next = task;
++        }
++        prev = task;
++    }
++
++    #pragma omp parallel
++    #pragma omp single
++    // re-declaring task variable is necessary, or older gcc versions will produce code that segfaults
++    for (struct binaryPackageTaskData *task = tasks; task != NULL; task = task->next) {
++        if (task != tasks)
++        #pragma omp task
++        {
++            task->result = packageBinary(spec, task->pkg, cookie, cheating, &(task->filename));
++            rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
++        }
++    }
++
++    return tasks;
++}
++
++static void freeBinaryPackageTasks(struct binaryPackageTaskData* tasks)
++{
++    while (tasks != NULL) {
++        struct binaryPackageTaskData* next = tasks->next;
++        rfree(tasks->filename);
++        rfree(tasks);
++        tasks = next;
++    }
++}
++
++rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
++{
+     char *pkglist = NULL;
+ 
+-    for (pkg = spec->packages; pkg != NULL; pkg = pkg->next) {
+-       char *fn = NULL;
+-       rc = packageBinary(spec, pkg, cookie, cheating, &fn);
+-       if (rc == RPMRC_OK) {
+-           rstrcat(&pkglist, fn);
+-           rstrcat(&pkglist, " ");
+-       }
+-       free(fn);
+-       if (rc != RPMRC_OK) {
+-           pkglist = _free(pkglist);
+-           return rc;
+-       }
++    struct binaryPackageTaskData *tasks = runBinaryPackageTasks(spec, cookie, cheating);
++
++    for (struct binaryPackageTaskData *task = tasks; task != NULL; task = task->next) {
++        if (task->result == RPMRC_OK) {
++            rstrcat(&pkglist, task->filename);
++            rstrcat(&pkglist, " ");
++        } else {
++            _free(pkglist);
++            freeBinaryPackageTasks(tasks);
++            return RPMRC_FAIL;
++        }
+     }
++    freeBinaryPackageTasks(tasks);
+ 
+     /* Now check the package set if enabled */
+     if (pkglist != NULL) {
+diff --git a/configure.ac b/configure.ac
+index a506ec819..59fa0acaf 100644
+--- a/configure.ac
++++ b/configure.ac
+@@ -17,6 +17,9 @@ AC_DISABLE_STATIC
+ 
+ PKG_PROG_PKG_CONFIG
+ 
++AC_OPENMP
++RPMCFLAGS="$OPENMP_CFLAGS $RPMCFLAGS"
++
+ dnl Checks for programs.
+ AC_PROG_CXX
+ AC_PROG_AWK
+-- 
+2.11.0
+
diff --git a/meta/recipes-devtools/rpm/files/0003-rpmstrpool.c-make-operations-over-string-pools-threa.patch b/meta/recipes-devtools/rpm/files/0003-rpmstrpool.c-make-operations-over-string-pools-threa.patch
new file mode 100644
index 0000000000..c348ae5330
--- /dev/null
+++ b/meta/recipes-devtools/rpm/files/0003-rpmstrpool.c-make-operations-over-string-pools-threa.patch
@@ -0,0 +1,207 @@
+From c80892f17e44331206c8318d53b63bb6a99554d0 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Tue, 30 May 2017 13:58:30 +0300
+Subject: [PATCH 3/4] rpmstrpool.c: make operations over string pools
+ thread-safe
+
+Otherwise multithreaded rpm building explodes in various ways due
+to data races.
+
+Upstream-Status: Submitted [https://github.com/rpm-software-management/rpm/pull/226]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+---
+ rpmio/rpmstrpool.c | 56 +++++++++++++++++++++++++++++++++++++++++++++---------
+ 1 file changed, 47 insertions(+), 9 deletions(-)
+
+diff --git a/rpmio/rpmstrpool.c b/rpmio/rpmstrpool.c
+index 30a57eb10..58ba95a02 100644
+--- a/rpmio/rpmstrpool.c
++++ b/rpmio/rpmstrpool.c
+@@ -113,6 +113,8 @@ static poolHash poolHashCreate(int numBuckets)
+     return ht;
+ }
+ 
++static const char * rpmstrPoolStrNoLock(rpmstrPool pool, rpmsid sid);
++
+ static void poolHashResize(rpmstrPool pool, int numBuckets)
+ {
+     poolHash ht = pool->hash;
+@@ -120,7 +122,7 @@ static void poolHashResize(rpmstrPool pool, int numBuckets)
+ 
+     for (int i=0; i<ht->numBuckets; i++) {
+         if (!ht->buckets[i].keyid) continue;
+-        unsigned int keyHash = rstrhash(rpmstrPoolStr(pool, ht->buckets[i].keyid));
++        unsigned int keyHash = rstrhash(rpmstrPoolStrNoLock(pool, ht->buckets[i].keyid));
+         for (unsigned int j=0;;j++) {
+             unsigned int hash = hashbucket(keyHash, j) % numBuckets;
+             if (!buckets[hash].keyid) {
+@@ -149,7 +151,7 @@ static void poolHashAddHEntry(rpmstrPool pool, const char * key, unsigned int ke
+             ht->buckets[hash].keyid = keyid;
+             ht->keyCount++;
+             break;
+-        } else if (!strcmp(rpmstrPoolStr(pool, ht->buckets[hash].keyid), key)) {
++        } else if (!strcmp(rpmstrPoolStrNoLock(pool, ht->buckets[hash].keyid), key)) {
+             return;
+         }
+     }
+@@ -191,7 +193,7 @@ static void poolHashPrintStats(rpmstrPool pool)
+     int maxcollisions = 0;
+ 
+     for (i=0; i<ht->numBuckets; i++) {
+-        unsigned int keyHash = rstrhash(rpmstrPoolStr(pool, ht->buckets[i].keyid));
++        unsigned int keyHash = rstrhash(rpmstrPoolStrNoLock(pool, ht->buckets[i].keyid));
+         for (unsigned int j=0;;j++) {
+             unsigned int hash = hashbucket(keyHash, i) % ht->numBuckets;
+             if (hash==i) {
+@@ -221,7 +223,7 @@ static void rpmstrPoolRehash(rpmstrPool pool)
+ 
+     pool->hash = poolHashCreate(sizehint);
+     for (int i = 1; i <= pool->offs_size; i++)
+-       poolHashAddEntry(pool, rpmstrPoolStr(pool, i), i);
++       poolHashAddEntry(pool, rpmstrPoolStrNoLock(pool, i), i);
+ }
+ 
+ rpmstrPool rpmstrPoolCreate(void)
+@@ -245,6 +247,8 @@ rpmstrPool rpmstrPoolCreate(void)
+ 
+ rpmstrPool rpmstrPoolFree(rpmstrPool pool)
+ {
++    #pragma omp critical(rpmstrpool)
++    {
+     if (pool) {
+        if (pool->nrefs > 1) {
+            pool->nrefs--;
+@@ -260,18 +264,24 @@ rpmstrPool rpmstrPoolFree(rpmstrPool pool)
+            free(pool);
+        }
+     }
++    }
+     return NULL;
+ }
+ 
+ rpmstrPool rpmstrPoolLink(rpmstrPool pool)
+ {
++    #pragma omp critical(rpmstrpool)
++    {
+     if (pool)
+        pool->nrefs++;
++    }
+     return pool;
+ }
+ 
+ void rpmstrPoolFreeze(rpmstrPool pool, int keephash)
+ {
++    #pragma omp critical(rpmstrpool)
++    {
+     if (pool && !pool->frozen) {
+        if (!keephash) {
+            pool->hash = poolHashFree(pool->hash);
+@@ -281,16 +291,20 @@ void rpmstrPoolFreeze(rpmstrPool pool, int keephash)
+                              pool->offs_alloced * sizeof(*pool->offs));
+        pool->frozen = 1;
+     }
++    }
+ }
+ 
+ void rpmstrPoolUnfreeze(rpmstrPool pool)
+ {
++    #pragma omp critical(rpmstrpool)
++    {
+     if (pool) {
+        if (pool->hash == NULL) {
+            rpmstrPoolRehash(pool);
+        }
+        pool->frozen = 0;
+     }
++    }
+ }
+ 
+ static rpmsid rpmstrPoolPut(rpmstrPool pool, const char *s, size_t slen, unsigned int hash)
+@@ -350,7 +364,7 @@ static rpmsid rpmstrPoolGet(rpmstrPool pool, const char * key, size_t keylen,
+             return 0;
+         }
+ 
+-       s = rpmstrPoolStr(pool, ht->buckets[hash].keyid);
++       s = rpmstrPoolStrNoLock(pool, ht->buckets[hash].keyid);
+        /* pool string could be longer than keylen, require exact matche */
+        if (strncmp(s, key, keylen) == 0 && s[keylen] == '\0')
+            return ht->buckets[hash].keyid;
+@@ -373,27 +387,31 @@ static inline rpmsid strn2id(rpmstrPool pool, const char *s, size_t slen,
+ rpmsid rpmstrPoolIdn(rpmstrPool pool, const char *s, size_t slen, int create)
+ {
+     rpmsid sid = 0;
+-
++    #pragma omp critical(rpmstrpool)
++    {
+     if (s != NULL) {
+        unsigned int hash = rstrnhash(s, slen);
+        sid = strn2id(pool, s, slen, hash, create);
+     }
++    }
+     return sid;
+ }
+ 
+ rpmsid rpmstrPoolId(rpmstrPool pool, const char *s, int create)
+ {
+     rpmsid sid = 0;
+-
++    #pragma omp critical(rpmstrpool)
++    {
+     if (s != NULL) {
+        size_t slen;
+        unsigned int hash = rstrlenhash(s, &slen);
+        sid = strn2id(pool, s, slen, hash, create);
+     }
++    }
+     return sid;
+ }
+ 
+-const char * rpmstrPoolStr(rpmstrPool pool, rpmsid sid)
++static const char * rpmstrPoolStrNoLock(rpmstrPool pool, rpmsid sid)
+ {
+     const char *s = NULL;
+     if (pool && sid > 0 && sid <= pool->offs_size)
+@@ -401,12 +419,25 @@ const char * rpmstrPoolStr(rpmstrPool pool, rpmsid sid)
+     return s;
+ }
+ 
++const char * rpmstrPoolStr(rpmstrPool pool, rpmsid sid)
++{
++    const char *s = NULL;
++    #pragma omp critical(rpmstrpool)
++    {
++    s = rpmstrPoolStrNoLock(pool, sid);
++    }
++    return s;
++}
++
+ size_t rpmstrPoolStrlen(rpmstrPool pool, rpmsid sid)
+ {
+     size_t slen = 0;
++    #pragma omp critical(rpmstrpool)
++    {
+     if (pool && sid > 0 && sid <= pool->offs_size) {
+        slen = strlen(pool->offs[sid]);
+     }
++    }
+     return slen;
+ }
+ 
+@@ -421,5 +452,12 @@ int rpmstrPoolStreq(rpmstrPool poolA, rpmsid sidA,
+ 
+ rpmsid rpmstrPoolNumStr(rpmstrPool pool)
+ {
+-    return (pool != NULL) ? pool->offs_size : 0;
++    rpmsid id = 0;
++    #pragma omp critical(rpmstrpool)
++    {
++    if (pool) {
++       id = pool->offs_size;
++    }
++    }
++    return id;
+ }
+-- 
+2.11.0
+
diff --git a/meta/recipes-devtools/rpm/files/0004-build-pack.c-remove-static-local-variables-from-buil.patch b/meta/recipes-devtools/rpm/files/0004-build-pack.c-remove-static-local-variables-from-buil.patch
new file mode 100644
index 0000000000..64a5651f7e
--- /dev/null
+++ b/meta/recipes-devtools/rpm/files/0004-build-pack.c-remove-static-local-variables-from-buil.patch
@@ -0,0 +1,337 @@
+From ec305795a302d226343e69031ff2024dfcde69c0 Mon Sep 17 00:00:00 2001
+From: Alexander Kanavin <alex.kanavin@gmail.com>
+Date: Thu, 8 Jun 2017 17:08:09 +0300
+Subject: [PATCH 3/3] build/pack.c: remove static local variables from
+ buildHost() and getBuildTime()
+
+Their use is causing difficult to diagnoze data races when building multiple
+packages in parallel, and is a bad idea in general, as it also makes it more
+difficult to reason about code.
+
+Upstream-Status: Submitted [https://github.com/rpm-software-management/rpm/pull/226]
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+
+
+Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
+---
+ build/build.c             | 54 ++++++++++++++++++++++++++++--
+ build/pack.c              | 84 +++++++++--------------------------------------
+ build/rpmbuild_internal.h |  8 +++--
+ 3 files changed, 74 insertions(+), 72 deletions(-)
+
+diff --git a/build/build.c b/build/build.c
+index 5f99c8db7..09a1311c5 100644
+--- a/build/build.c
++++ b/build/build.c
+@@ -6,6 +6,8 @@
+ #include "system.h"
+ 
+ #include <errno.h>
++#include <netdb.h>
++#include <time.h>
+ #include <sys/wait.h>
+ 
+ #include <rpm/rpmlog.h>
+@@ -16,6 +18,50 @@
+ 
+ #include "debug.h"
+ 
++static rpm_time_t getBuildTime(void)
++{
++    rpm_time_t buildTime = 0;
++    char *srcdate;
++    time_t epoch;
++    char *endptr;
++
++    srcdate = getenv("SOURCE_DATE_EPOCH");
++    if (srcdate) {
++        errno = 0;
++        epoch = strtol(srcdate, &endptr, 10);
++        if (srcdate == endptr || *endptr || errno != 0)
++            rpmlog(RPMLOG_ERR, _("unable to parse SOURCE_DATE_EPOCH\n"));
++        else
++            buildTime = (int32_t) epoch;
++    } else
++        buildTime = (int32_t) time(NULL);
++
++    return buildTime;
++}
++
++static char * buildHost(void)
++{
++    char* hostname;
++    struct hostent *hbn;
++    char *bhMacro;
++
++    bhMacro = rpmExpand("%{?_buildhost}", NULL);
++    if (strcmp(bhMacro, "") != 0) {
++        rasprintf(&hostname, "%s", bhMacro);
++    } else {
++        hostname = rcalloc(1024, sizeof(*hostname));
++        (void) gethostname(hostname, 1024);
++        hbn = gethostbyname(hostname);
++        if (hbn)
++            strcpy(hostname, hbn->h_name);
++        else
++            rpmlog(RPMLOG_WARNING,
++                    _("Could not canonicalize hostname: %s\n"), hostname);
++    }
++    free(bhMacro);
++    return(hostname);
++}
++
+ /**
+  */
+ static rpmRC doRmSource(rpmSpec spec)
+@@ -203,6 +249,9 @@ static rpmRC buildSpec(BTA_t buildArgs, rpmSpec spec, int what)
+     rpmRC rc = RPMRC_OK;
+     int test = (what & RPMBUILD_NOBUILD);
+     char *cookie = buildArgs->cookie ? xstrdup(buildArgs->cookie) : NULL;
++    const char* host = buildHost();
++    rpm_time_t buildTime = getBuildTime();
++
+ 
+     if (rpmExpandNumeric("%{?source_date_epoch_from_changelog}") &&
+        getenv("SOURCE_DATE_EPOCH") == NULL) {
+@@ -271,11 +320,11 @@ static rpmRC buildSpec(BTA_t buildArgs, rpmSpec spec, int what)
+                goto exit;
+ 
+        if (((what & RPMBUILD_PACKAGESOURCE) && !test) &&
+-           (rc = packageSources(spec, &cookie)))
++           (rc = packageSources(spec, &cookie, buildTime, host)))
+                return rc;
+ 
+        if (((what & RPMBUILD_PACKAGEBINARY) && !test) &&
+-           (rc = packageBinaries(spec, cookie, (didBuild == 0))))
++           (rc = packageBinaries(spec, cookie, (didBuild == 0), buildTime, host)))
+                goto exit;
+        
+        if ((what & RPMBUILD_CLEAN) &&
+@@ -295,6 +344,7 @@ static rpmRC buildSpec(BTA_t buildArgs, rpmSpec spec, int what)
+        (void) unlink(spec->specFile);
+ 
+ exit:
++    free(host);
+     free(cookie);
+     spec->rootDir = NULL;
+     if (rc != RPMRC_OK && rpmlogGetNrecs() > 0) {
+diff --git a/build/pack.c b/build/pack.c
+index ed5b9ab4e..62427065a 100644
+--- a/build/pack.c
++++ b/build/pack.c
+@@ -6,8 +6,6 @@
+ #include "system.h"
+ 
+ #include <errno.h>
+-#include <netdb.h>
+-#include <time.h>
+ #include <sys/wait.h>
+ 
+ #include <rpm/rpmlib.h>                        /* RPMSIGTAG*, rpmReadPackageFile */
+@@ -151,57 +149,6 @@ exit:
+     return rc;
+ }
+ 
+-static rpm_time_t * getBuildTime(void)
+-{
+-    static rpm_time_t buildTime[1];
+-    char *srcdate;
+-    time_t epoch;
+-    char *endptr;
+-
+-    if (buildTime[0] == 0) {
+-        srcdate = getenv("SOURCE_DATE_EPOCH");
+-        if (srcdate) {
+-            errno = 0;
+-            epoch = strtol(srcdate, &endptr, 10);
+-            if (srcdate == endptr || *endptr || errno != 0)
+-                rpmlog(RPMLOG_ERR, _("unable to parse SOURCE_DATE_EPOCH\n"));
+-            else
+-                buildTime[0] = (int32_t) epoch;
+-        } else
+-            buildTime[0] = (int32_t) time(NULL);
+-    }
+-
+-    return buildTime;
+-}
+-
+-static const char * buildHost(void)
+-{
+-    static char hostname[1024];
+-    static int oneshot = 0;
+-    struct hostent *hbn;
+-    char *bhMacro;
+-
+-    if (! oneshot) {
+-        bhMacro = rpmExpand("%{?_buildhost}", NULL);
+-        if (strcmp(bhMacro, "") != 0 && strlen(bhMacro) < 1024) {
+-            strcpy(hostname, bhMacro);
+-        } else {
+-            if (strcmp(bhMacro, "") != 0)
+-                rpmlog(RPMLOG_WARNING, _("The _buildhost macro is too long\n"));
+-            (void) gethostname(hostname, sizeof(hostname));
+-            hbn = gethostbyname(hostname);
+-            if (hbn)
+-                strcpy(hostname, hbn->h_name);
+-            else
+-                rpmlog(RPMLOG_WARNING,
+-                        _("Could not canonicalize hostname: %s\n"), hostname);
+-        }
+-        free(bhMacro);
+-        oneshot = 1;
+-    }
+-    return(hostname);
+-}
+-
+ static rpmRC processScriptFiles(rpmSpec spec, Package pkg)
+ {
+     struct TriggerFileEntry *p;
+@@ -308,7 +255,8 @@ static int haveRichDep(Package pkg)
+ }
+ 
+ static rpmRC writeRPM(Package pkg, unsigned char ** pkgidp,
+-                     const char *fileName, char **cookie)
++                     const char *fileName, char **cookie,
++                     rpm_time_t buildTime, const char* buildHost)
+ {
+     FD_t fd = NULL;
+     char * rpmio_flags = NULL;
+@@ -397,7 +345,7 @@ static rpmRC writeRPM(Package pkg, unsigned char ** pkgidp,
+ 
+     /* Create and add the cookie */
+     if (cookie) {
+-       rasprintf(cookie, "%s %d", buildHost(), (int) (*getBuildTime()));
++       rasprintf(cookie, "%s %d", buildHost, buildTime);
+        headerPutString(pkg->header, RPMTAG_COOKIE, *cookie);
+     }
+     
+@@ -546,7 +494,7 @@ static rpmRC checkPackages(char *pkgcheck)
+     return RPMRC_OK;
+ }
+ 
+-static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int cheating, char** filename)
++static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int cheating, char** filename, rpm_time_t buildTime, const char* buildHost)
+ {
+        const char *errorString;
+        rpmRC rc = RPMRC_OK;
+@@ -565,8 +513,8 @@ static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int ch
+        headerCopyTags(spec->packages->header, pkg->header, copyTags);
+        
+        headerPutString(pkg->header, RPMTAG_RPMVERSION, VERSION);
+-       headerPutString(pkg->header, RPMTAG_BUILDHOST, buildHost());
+-       headerPutUint32(pkg->header, RPMTAG_BUILDTIME, getBuildTime(), 1);
++       headerPutString(pkg->header, RPMTAG_BUILDHOST, buildHost);
++       headerPutUint32(pkg->header, RPMTAG_BUILDTIME, &buildTime, 1);
+ 
+        if (spec->sourcePkgId != NULL) {
+            headerPutBin(pkg->header, RPMTAG_SOURCEPKGID, spec->sourcePkgId,16);
+@@ -604,7 +552,7 @@ static rpmRC packageBinary(rpmSpec spec, Package pkg, const char *cookie, int ch
+            free(binRpm);
+        }
+ 
+-       rc = writeRPM(pkg, NULL, *filename, NULL);
++       rc = writeRPM(pkg, NULL, *filename, NULL, buildTime, buildHost);
+        if (rc == RPMRC_OK) {
+            /* Do check each written package if enabled */
+            char *pkgcheck = rpmExpand("%{?_build_pkgcheck} ", *filename, NULL);
+@@ -624,7 +572,7 @@ struct binaryPackageTaskData
+     struct binaryPackageTaskData *next;
+ };
+ 
+-static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const char *cookie, int cheating)
++static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const char *cookie, int cheating, rpm_time_t buildTime, char* buildHost)
+ {
+     struct binaryPackageTaskData *tasks = NULL;
+     struct binaryPackageTaskData *task = NULL;
+@@ -636,7 +584,7 @@ static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const c
+         if (pkg == spec->packages) {
+             // the first package needs to be processed ahead of others, as they copy
+             // changelog data from it, and so otherwise data races would happen
+-            task->result = packageBinary(spec, pkg, cookie, cheating, &(task->filename));
++            task->result = packageBinary(spec, pkg, cookie, cheating, &(task->filename), buildTime, buildHost);
+             rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
+             tasks = task;
+         }
+@@ -653,7 +601,7 @@ static struct binaryPackageTaskData* runBinaryPackageTasks(rpmSpec spec, const c
+         if (task != tasks)
+         #pragma omp task
+         {
+-            task->result = packageBinary(spec, task->pkg, cookie, cheating, &(task->filename));
++            task->result = packageBinary(spec, task->pkg, cookie, cheating, &(task->filename), buildTime, buildHost);
+             rpmlog(RPMLOG_NOTICE, _("Finished binary package job, result %d, filename %s\n"), task->result, task->filename);
+         }
+     }
+@@ -671,11 +619,11 @@ static void freeBinaryPackageTasks(struct binaryPackageTaskData* tasks)
+     }
+ }
+ 
+-rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
++rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating, rpm_time_t buildTime, char* buildHost)
+ {
+     char *pkglist = NULL;
+ 
+-    struct binaryPackageTaskData *tasks = runBinaryPackageTasks(spec, cookie, cheating);
++    struct binaryPackageTaskData *tasks = runBinaryPackageTasks(spec, cookie, cheating, buildTime, buildHost);
+ 
+     for (struct binaryPackageTaskData *task = tasks; task != NULL; task = task->next) {
+         if (task->result == RPMRC_OK) {
+@@ -702,22 +650,22 @@ rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating)
+     return RPMRC_OK;
+ }
+ 
+-rpmRC packageSources(rpmSpec spec, char **cookie)
++rpmRC packageSources(rpmSpec spec, char **cookie, rpm_time_t buildTime, char* buildHost)
+ {
+     Package sourcePkg = spec->sourcePackage;
+     rpmRC rc;
+ 
+     /* Add some cruft */
+     headerPutString(sourcePkg->header, RPMTAG_RPMVERSION, VERSION);
+-    headerPutString(sourcePkg->header, RPMTAG_BUILDHOST, buildHost());
+-    headerPutUint32(sourcePkg->header, RPMTAG_BUILDTIME, getBuildTime(), 1);
++    headerPutString(sourcePkg->header, RPMTAG_BUILDHOST, buildHost);
++    headerPutUint32(sourcePkg->header, RPMTAG_BUILDTIME, &buildTime, 1);
+ 
+     /* XXX this should be %_srpmdir */
+     {  char *fn = rpmGetPath("%{_srcrpmdir}/", spec->sourceRpmName,NULL);
+        char *pkgcheck = rpmExpand("%{?_build_pkgcheck_srpm} ", fn, NULL);
+ 
+        spec->sourcePkgId = NULL;
+-       rc = writeRPM(sourcePkg, &spec->sourcePkgId, fn, cookie);
++       rc = writeRPM(sourcePkg, &spec->sourcePkgId, fn, cookie, buildTime, buildHost);
+ 
+        /* Do check SRPM package if enabled */
+        if (rc == RPMRC_OK && pkgcheck[0] != ' ') {
+diff --git a/build/rpmbuild_internal.h b/build/rpmbuild_internal.h
+index 8351a6a34..797337ca7 100644
+--- a/build/rpmbuild_internal.h
++++ b/build/rpmbuild_internal.h
+@@ -408,19 +408,23 @@ rpmRC processSourceFiles(rpmSpec spec, rpmBuildPkgFlags pkgFlags);
+  * @param spec         spec file control structure
+  * @param cookie       build identifier "cookie" or NULL
+  * @param cheating     was build shortcircuited?
++ * @param buildTime    the build timestamp that goes into packages
++ * @param buildHost    the hostname where the build is happening
+  * @return             RPMRC_OK on success
+  */
+ RPM_GNUC_INTERNAL
+-rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating);
++rpmRC packageBinaries(rpmSpec spec, const char *cookie, int cheating, rpm_time_t buildTime, char* buildHost);
+ 
+ /** \ingroup rpmbuild
+  * Generate source package.
+  * @param spec         spec file control structure
+  * @retval cookie      build identifier "cookie" or NULL
++ * @param buildTime    the build timestamp that goes into packages
++ * @param buildHost    the hostname where the build is happening
+  * @return             RPMRC_OK on success
+  */
+ RPM_GNUC_INTERNAL
+-rpmRC packageSources(rpmSpec spec, char **cookie);
++rpmRC packageSources(rpmSpec spec, char **cookie, rpm_time_t buildTime, char* buildHost);
+ 
+ RPM_GNUC_INTERNAL
+ int addLangTag(rpmSpec spec, Header h, rpmTagVal tag,
+-- 
+2.11.0
+
diff --git a/meta/recipes-devtools/rpm/rpm_git.bb b/meta/recipes-devtools/rpm/rpm_git.bb
index 5fe52b83ec..e721dfba0b 100644
--- a/meta/recipes-devtools/rpm/rpm_git.bb
+++ b/meta/recipes-devtools/rpm/rpm_git.bb
@@ -38,6 +38,10 @@ SRC_URI = "git://github.com/rpm-software-management/rpm \
            file://0011-Do-not-require-that-ELF-binaries-are-executable-to-b.patch \
            file://0012-Use-conditional-to-access-_docdir-in-macros.in.patch \
            file://0013-Add-a-new-option-alldeps-to-rpmdeps.patch \
+           file://0001-Split-binary-package-building-into-a-separate-functi.patch \
+           file://0002-Run-binary-package-creation-via-thread-pools.patch \
+           file://0003-rpmstrpool.c-make-operations-over-string-pools-threa.patch \
+           file://0004-build-pack.c-remove-static-local-variables-from-buil.patch \
            "
 
 PV = "4.13.90+git${SRCPV}"