1 files changed, 0 insertions, 149 deletions
diff --git a/scripts/lib/jobserver.py b/scripts/lib/jobserver.py
deleted file mode 100755
index a24f30ef4fa8..000000000000
--- a/scripts/lib/jobserver.py
+++ /dev/null
@@ -1,149 +0,0 @@
-#!/usr/bin/env python3
-# SPDX-License-Identifier: GPL-2.0+
-#
-# pylint: disable=C0103,C0209
-#
-#
-
-"""
-Interacts with the POSIX jobserver during the Kernel build time.
-
-A "normal" jobserver task, like the one initiated by a make subrocess would do:
-
-    - open read/write file descriptors to communicate with the job server;
-    - ask for one slot by calling:
-        claim = os.read(reader, 1)
-    - when the job finshes, call:
-        os.write(writer, b"+")  # os.write(writer, claim)
-
-Here, the goal is different: This script aims to get the remaining number
-of slots available, using all of them to run a command which handle tasks in
-parallel. To to that, it has a loop that ends only after there are no
-slots left. It then increments the number by one, in order to allow a
-call equivalent to make -j$((claim+1)), e.g. having a parent make creating
-$claim child to do the actual work.
-
-The end goal here is to keep the total number of build tasks under the
-limit established by the initial make -j$n_proc call.
-
-See:
-    https://www.gnu.org/software/make/manual/html_node/POSIX-Jobserver.html#POSIX-Jobserver
-"""
-
-import errno
-import os
-import subprocess
-import sys
-
-class JobserverExec:
-    """
-    Claim all slots from make using POSIX Jobserver.
-
-    The main methods here are:
-    - open(): reserves all slots;
-    - close(): method returns all used slots back to make;
-    - run(): executes a command setting PARALLELISM=<available slots jobs + 1>
-    """
-
-    def __init__(self):
-        """Initialize internal vars"""
-        self.claim = 0
-        self.jobs = b""
-        self.reader = None
-        self.writer = None
-        self.is_open = False
-
-    def open(self):
-        """Reserve all available slots to be claimed later on"""
-
-        if self.is_open:
-            return
-
-        try:
-            # Fetch the make environment options.
-            flags = os.environ["MAKEFLAGS"]
-            # Look for "--jobserver=R,W"
-            # Note that GNU Make has used --jobserver-fds and --jobserver-auth
-            # so this handles all of them.
-            opts = [x for x in flags.split(" ") if x.startswith("--jobserver")]
-
-            # Parse out R,W file descriptor numbers and set them nonblocking.
-            # If the MAKEFLAGS variable contains multiple instances of the
-            # --jobserver-auth= option, the last one is relevant.
-            fds = opts[-1].split("=", 1)[1]
-
-            # Starting with GNU Make 4.4, named pipes are used for reader
-            # and writer.
-            # Example argument: --jobserver-auth=fifo:/tmp/GMfifo8134
-            _, _, path = fds.partition("fifo:")
-
-            if path:
-                self.reader = os.open(path, os.O_RDONLY | os.O_NONBLOCK)
-                self.writer = os.open(path, os.O_WRONLY)
-            else:
-                self.reader, self.writer = [int(x) for x in fds.split(",", 1)]
-                # Open a private copy of reader to avoid setting nonblocking
-                # on an unexpecting process with the same reader fd.
-                self.reader = os.open("/proc/self/fd/%d" % (self.reader),
-                                      os.O_RDONLY | os.O_NONBLOCK)
-
-            # Read out as many jobserver slots as possible
-            while True:
-                try:
-                    slot = os.read(self.reader, 8)
-                    self.jobs += slot
-                except (OSError, IOError) as e:
-                    if e.errno == errno.EWOULDBLOCK:
-                        # Stop at the end of the jobserver queue.
-                        break
-                    # If something went wrong, give back the jobs.
-                    if self.jobs:
-                        os.write(self.writer, self.jobs)
-                    raise e
-
-            # Add a bump for our caller's reserveration, since we're just going
-            # to sit here blocked on our child.
-            self.claim = len(self.jobs) + 1
-
-        except (KeyError, IndexError, ValueError, OSError, IOError):
-            # Any missing environment strings or bad fds should result in just
-            # not being parallel.
-            self.claim = None
-
-        self.is_open = True
-
-    def close(self):
-        """Return all reserved slots to Jobserver"""
-
-        if not self.is_open:
-            return
-
-        # Return all the reserved slots.
-        if len(self.jobs):
-            os.write(self.writer, self.jobs)
-
-        self.is_open = False
-
-    def __enter__(self):
-        self.open()
-        return self
-
-    def __exit__(self, exc_type, exc_value, exc_traceback):
-        self.close()
-
-    def run(self, cmd, *args, **pwargs):
-        """
-        Run a command setting PARALLELISM env variable to the number of
-        available job slots (claim) + 1, e.g. it will reserve claim slots
-        to do the actual build work, plus one to monitor its children.
-        """
-        self.open()             # Ensure that self.claim is set
-
-        # We can only claim parallelism if there was a jobserver (i.e. a
-        # top-level "-jN" argument) and there were no other failures. Otherwise
-        # leave out the environment variable and let the child figure out what
-        # is best.
-        if self.claim:
-            os.environ["PARALLELISM"] = str(self.claim)
-
-        return subprocess.call(cmd, *args, **pwargs)