diff --git a/libc/async_safe/async_safe_log.cpp b/libc/async_safe/async_safe_log.cpp
index 78f62bd..d5aad16 100644
--- a/libc/async_safe/async_safe_log.cpp
+++ b/libc/async_safe/async_safe_log.cpp
@@ -47,6 +47,7 @@
 #include <async_safe/log.h>
 
 #include "private/CachedProperty.h"
+#include "private/ErrnoRestorer.h"
 #include "private/ScopedPthreadMutexLocker.h"
 
 // Must be kept in sync with frameworks/base/core/java/android/util/EventLog.java.
@@ -508,6 +509,7 @@
 }
 
 int async_safe_format_log_va_list(int priority, const char* tag, const char* format, va_list args) {
+  ErrnoRestorer errno_restorer;
   char buffer[1024];
   BufferOutputStream os(buffer, sizeof(buffer));
   out_vformat(os, format, args);
diff --git a/libc/bionic/__libc_init_main_thread.cpp b/libc/bionic/__libc_init_main_thread.cpp
index 9cbff11..6d948ec 100644
--- a/libc/bionic/__libc_init_main_thread.cpp
+++ b/libc/bionic/__libc_init_main_thread.cpp
@@ -86,7 +86,6 @@
   pthread_attr_init(&main_thread.attr);
   main_thread.attr.guard_size = 0; // The main thread has no guard page.
   main_thread.attr.stack_size = 0; // User code should never see this; we'll compute it when asked.
-  // TODO: the main thread's sched_policy and sched_priority need to be queried.
 
   // The TLS stack guard is set from the global, so ensure that we've initialized the global
   // before we initialize the TLS. Dynamic executables will initialize their copy of the global
diff --git a/libc/bionic/pthread_attr.cpp b/libc/bionic/pthread_attr.cpp
index fc9e74a..0d79374 100644
--- a/libc/bionic/pthread_attr.cpp
+++ b/libc/bionic/pthread_attr.cpp
@@ -54,6 +54,23 @@
   return 0;
 }
 
+int pthread_attr_setinheritsched(pthread_attr_t* attr, int flag) {
+  if (flag == PTHREAD_EXPLICIT_SCHED) {
+    attr->flags &= ~PTHREAD_ATTR_FLAG_INHERIT;
+  } else if (flag == PTHREAD_INHERIT_SCHED) {
+    attr->flags |= PTHREAD_ATTR_FLAG_INHERIT;
+  } else {
+    return EINVAL;
+  }
+  return 0;
+}
+
+int pthread_attr_getinheritsched(const pthread_attr_t* attr, int* flag) {
+  *flag = (attr->flags & PTHREAD_ATTR_FLAG_INHERIT) ? PTHREAD_INHERIT_SCHED
+                                                    : PTHREAD_EXPLICIT_SCHED;
+  return 0;
+}
+
 int pthread_attr_setdetachstate(pthread_attr_t* attr, int state) {
   if (state == PTHREAD_CREATE_DETACHED) {
     attr->flags |= PTHREAD_ATTR_FLAG_DETACHED;
diff --git a/libc/bionic/pthread_create.cpp b/libc/bionic/pthread_create.cpp
index be0fd1b..11e148c 100644
--- a/libc/bionic/pthread_create.cpp
+++ b/libc/bionic/pthread_create.cpp
@@ -109,7 +109,7 @@
 }
 
 int __init_thread(pthread_internal_t* thread) {
-  int error = 0;
+  thread->cleanup_stack = nullptr;
 
   if (__predict_true((thread->attr.flags & PTHREAD_ATTR_FLAG_DETACHED) == 0)) {
     atomic_init(&thread->join_state, THREAD_NOT_JOINED);
@@ -117,23 +117,43 @@
     atomic_init(&thread->join_state, THREAD_DETACHED);
   }
 
-  // Set the scheduling policy/priority of the thread.
-  if (thread->attr.sched_policy != SCHED_NORMAL) {
-    sched_param param;
+  // Set the scheduling policy/priority of the thread if necessary.
+  bool need_set = true;
+  int policy;
+  sched_param param;
+  if (thread->attr.flags & PTHREAD_ATTR_FLAG_INHERIT) {
+    // Unless the parent has SCHED_RESET_ON_FORK set, we've already inherited from the parent.
+    policy = sched_getscheduler(0);
+    need_set = ((policy & SCHED_RESET_ON_FORK) != 0);
+    if (need_set) {
+      if (policy == -1) {
+        async_safe_format_log(ANDROID_LOG_WARN, "libc",
+                              "pthread_create sched_getscheduler failed: %s", strerror(errno));
+        return errno;
+      }
+      if (sched_getparam(0, &param) == -1) {
+        async_safe_format_log(ANDROID_LOG_WARN, "libc",
+                              "pthread_create sched_getparam failed: %s", strerror(errno));
+        return errno;
+      }
+    }
+  } else {
+    policy = thread->attr.sched_policy;
     param.sched_priority = thread->attr.sched_priority;
-    if (sched_setscheduler(thread->tid, thread->attr.sched_policy, &param) == -1) {
+  }
+  if (need_set) {
+    if (sched_setscheduler(thread->tid, policy, &param) == -1) {
+      async_safe_format_log(ANDROID_LOG_WARN, "libc",
+                            "pthread_create sched_setscheduler(%d, {%d}) call failed: %s", policy,
+                            param.sched_priority, strerror(errno));
 #if defined(__LP64__)
       // For backwards compatibility reasons, we only report failures on 64-bit devices.
-      error = errno;
+      return errno;
 #endif
-      async_safe_format_log(ANDROID_LOG_WARN, "libc",
-                            "pthread_create sched_setscheduler call failed: %s", strerror(errno));
     }
   }
 
-  thread->cleanup_stack = NULL;
-
-  return error;
+  return 0;
 }
 
 static void* __create_thread_mapped_space(size_t mmap_size, size_t stack_guard_size) {
diff --git a/libc/bionic/pthread_internal.h b/libc/bionic/pthread_internal.h
index ad8be66..2dd0cff 100644
--- a/libc/bionic/pthread_internal.h
+++ b/libc/bionic/pthread_internal.h
@@ -34,12 +34,15 @@
 #include "private/bionic_lock.h"
 #include "private/bionic_tls.h"
 
-/* Has the thread been detached by a pthread_join or pthread_detach call? */
+// Has the thread been detached by a pthread_join or pthread_detach call?
 #define PTHREAD_ATTR_FLAG_DETACHED 0x00000001
 
-/* Has the thread been joined by another thread? */
+// Has the thread been joined by another thread?
 #define PTHREAD_ATTR_FLAG_JOINED 0x00000002
 
+// Should we inherit scheduling attributes from the parent on pthread_create?
+#define PTHREAD_ATTR_FLAG_INHERIT 0x00000004
+
 class pthread_key_data_t {
  public:
   uintptr_t seq; // Use uintptr_t just for alignment, as we use pointer below.
diff --git a/libc/include/bits/posix_limits.h b/libc/include/bits/posix_limits.h
index e5846d6..17a39a4 100644
--- a/libc/include/bits/posix_limits.h
+++ b/libc/include/bits/posix_limits.h
@@ -77,7 +77,7 @@
 #define _POSIX_THREAD_CPUTIME _POSIX_VERSION /* CLOCK_THREAD_CPUTIME_ID. */
 #define _POSIX_THREAD_PRIO_INHERIT __BIONIC_POSIX_FEATURE_MISSING
 #define _POSIX_THREAD_PRIO_PROTECT __BIONIC_POSIX_FEATURE_MISSING
-#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION /* Strictly, pthread_attr_getinheritsched/pthread_attr_setinheritsched are missing. */
+#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION /* Strictly, pthread_attr_getinheritsched/pthread_attr_setinheritsched arrived in 28. */
 #define _POSIX_THREAD_PROCESS_SHARED _POSIX_VERSION
 #define _POSIX_THREAD_ROBUST_PRIO_INHERIT __BIONIC_POSIX_FEATURE_MISSING
 #define _POSIX_THREAD_ROBUST_PRIO_PROTECT __BIONIC_POSIX_FEATURE_MISSING
diff --git a/libc/include/pthread.h b/libc/include/pthread.h
index 2253e0d..99515da 100644
--- a/libc/include/pthread.h
+++ b/libc/include/pthread.h
@@ -74,20 +74,24 @@
 #define PTHREAD_STACK_MIN (2 * PAGE_SIZE)
 #endif
 
-#define PTHREAD_CREATE_DETACHED  0x00000001
-#define PTHREAD_CREATE_JOINABLE  0x00000000
+#define PTHREAD_CREATE_DETACHED 1
+#define PTHREAD_CREATE_JOINABLE 0
 
-#define PTHREAD_PROCESS_PRIVATE  0
-#define PTHREAD_PROCESS_SHARED   1
+#define PTHREAD_EXPLICIT_SCHED 0
+#define PTHREAD_INHERIT_SCHED 1
 
-#define PTHREAD_SCOPE_SYSTEM     0
-#define PTHREAD_SCOPE_PROCESS    1
+#define PTHREAD_PROCESS_PRIVATE 0
+#define PTHREAD_PROCESS_SHARED 1
+
+#define PTHREAD_SCOPE_SYSTEM 0
+#define PTHREAD_SCOPE_PROCESS 1
 
 int pthread_atfork(void (*__prepare)(void), void (*__parent)(void), void (*__child)(void)) __INTRODUCED_IN(12);
 
 int pthread_attr_destroy(pthread_attr_t* __attr);
 int pthread_attr_getdetachstate(const pthread_attr_t* __attr, int* __state);
 int pthread_attr_getguardsize(const pthread_attr_t* __attr, size_t* __size);
+int pthread_attr_getinheritsched(const pthread_attr_t* __attr, int* __flag);
 int pthread_attr_getschedparam(const pthread_attr_t* __attr, struct sched_param* __param);
 int pthread_attr_getschedpolicy(const pthread_attr_t* __attr, int* __policy);
 int pthread_attr_getscope(const pthread_attr_t* __attr, int* __scope);
@@ -96,6 +100,7 @@
 int pthread_attr_init(pthread_attr_t* __attr);
 int pthread_attr_setdetachstate(pthread_attr_t* __attr, int __state);
 int pthread_attr_setguardsize(pthread_attr_t* __attr, size_t __size);
+int pthread_attr_setinheritsched(pthread_attr_t* __attr, int __flag);
 int pthread_attr_setschedparam(pthread_attr_t* __attr, const struct sched_param* __param);
 int pthread_attr_setschedpolicy(pthread_attr_t* __attr, int __policy);
 int pthread_attr_setscope(pthread_attr_t* __attr, int __scope);
diff --git a/libc/libc.arm.map b/libc/libc.arm.map
index 981dd59..3433398 100644
--- a/libc/libc.arm.map
+++ b/libc/libc.arm.map
@@ -1362,6 +1362,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.arm64.map b/libc/libc.arm64.map
index 29c5235..aa82b39 100644
--- a/libc/libc.arm64.map
+++ b/libc/libc.arm64.map
@@ -1282,6 +1282,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.map.txt b/libc/libc.map.txt
index eafbbd7..d3d8e0f 100644
--- a/libc/libc.map.txt
+++ b/libc/libc.map.txt
@@ -1387,6 +1387,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.mips.map b/libc/libc.mips.map
index a32131f..62e0737 100644
--- a/libc/libc.mips.map
+++ b/libc/libc.mips.map
@@ -1346,6 +1346,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.mips64.map b/libc/libc.mips64.map
index 29c5235..aa82b39 100644
--- a/libc/libc.mips64.map
+++ b/libc/libc.mips64.map
@@ -1282,6 +1282,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.x86.map b/libc/libc.x86.map
index f1308ea..5cacee1 100644
--- a/libc/libc.x86.map
+++ b/libc/libc.x86.map
@@ -1344,6 +1344,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;
diff --git a/libc/libc.x86_64.map b/libc/libc.x86_64.map
index 29c5235..aa82b39 100644
--- a/libc/libc.x86_64.map
+++ b/libc/libc.x86_64.map
@@ -1282,6 +1282,8 @@
     posix_spawn_file_actions_destroy;
     posix_spawn_file_actions_init;
     posix_spawnp;
+    pthread_attr_getinheritsched;
+    pthread_attr_setinheritsched;
     pthread_setschedprio;
     sethostent;
     setnetent;