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