dracut/SOURCES/0021.patch

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From 7ee74e539dba61c3765afe34426b085eff0de027 Mon Sep 17 00:00:00 2001
From: Kairui Song <kasong@redhat.com>
Date: Thu, 21 Feb 2019 13:18:37 +0800
Subject: [PATCH] dracut: let module handling function accept optional path
option
Let the caller pass in the module path instead of try to find the module
path everytime. This helps optimize the overall runtime.
Test results (3 rounds) on Fedora 30 in KVM VM with 8 CPUs, 2G memory, HDD:
$ time ./dracut.sh --local --quiet --hostonly --hostonly-cmdline --hostonly-i18n --hostonly-mode 'strict' -o 'plymouth dash resume ifcfg' --mount '/dev/mapper/fedora-root /sysroot xfs defaults' --no-hostonly-default-device -f initramfs.img
Before the commit:
real 0m11.782s | real 0m11.505s | real 0m11.958s
user 0m9.169s | user 0m9.218s | user 0m9.327s
sys 0m10.839s | sys 0m10.829s | sys 0m10.925s
After this commit:
real 0m9.866s | real 0m9.580s | real 0m9.638s
user 0m9.048s | user 0m9.142s | user 0m9.120s
sys 0m7.411s | sys 0m7.775s | sys 0m7.745s
Test result of building a ordinary image:
$ time ./dracut.sh --local --quiet -f initramfs.img
Before the commit:
real 0m34.697s | real 0m34.371s | real 0m35.122s
user 0m27.608s | user 0m27.524s | user 0m27.705s
sys 0m22.341s | sys 0m22.032s | sys 0m22.246s
After the commit:
real 0m31.914s | real 0m31.006 | real 0m31.289ss
user 0m27.315s | user 0m27.324 | user 0m27.290ss
sys 0m19.051s | sys 0m18.916 | sys 0m19.022ss
This will have an ~2s speed up.
Signed-off-by: Kairui Song <kasong@redhat.com>
(cherry picked from commit 5916d31b24ad9eb21fd376929a96c459813315a1)
Cherry-picked from: 5916d31b
Resolves: #1734047
---
dracut-init.sh | 4 ++++
dracut.sh | 8 ++++----
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/dracut-init.sh b/dracut-init.sh
index b1ac9966..ab07cabf 100644
--- a/dracut-init.sh
+++ b/dracut-init.sh
@@ -154,6 +154,10 @@ dracut_no_switch_root() {
>"$initdir/lib/dracut/no-switch-root"
}
+dracut_module_path() {
+ echo ${dracutbasedir}/modules.d/??${1} | { read a b; echo "$a"; }
+}
+
if ! [[ $DRACUT_INSTALL ]]; then
DRACUT_INSTALL=$(find_binary dracut-install)
fi
diff --git a/dracut.sh b/dracut.sh
index 8144a16e..f270af76 100755
--- a/dracut.sh
+++ b/dracut.sh
@@ -1373,7 +1373,7 @@ do_print_cmdline()
for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
_d_mod=${moddir##*/}; _d_mod=${_d_mod#[0-9][0-9]}
[[ ${_mods_to_print[$_d_mod]} ]] || continue
- module_cmdline "$_d_mod"
+ module_cmdline "$_d_mod" "$moddir"
done
unset moddir
}
@@ -1454,14 +1454,14 @@ for moddir in "$dracutbasedir/modules.d"/[0-9][0-9]*; do
dinfo "*** Including module: $_d_mod ***"
fi
if [[ $kernel_only == yes ]]; then
- module_installkernel "$_d_mod" || {
+ module_installkernel "$_d_mod" "$moddir" || {
dfatal "installkernel failed in module $_d_mod"
exit 1
}
else
- module_install "$_d_mod"
+ module_install "$_d_mod" "$moddir"
if [[ $no_kernel != yes ]]; then
- module_installkernel "$_d_mod" || {
+ module_installkernel "$_d_mod" "$moddir" || {
dfatal "installkernel failed in module $_d_mod"
exit 1
}