48 lines
1.5 KiB
Diff
48 lines
1.5 KiB
Diff
From 2de26d2eca1a39f19d2b6cc470db690216ac64ba Mon Sep 17 00:00:00 2001
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From: "Richard W.M. Jones" <rjones@redhat.com>
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Date: Fri, 18 Mar 2016 11:57:41 +0000
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Subject: [PATCH 9/9] init: Add a blacklist of kmods that we want to exclude
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from the mini initrd.
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We want to exclude virtio-gpu since it's irrelevant, large, and pulls
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in other unwanted dependencies (modeswitching, drm). Add a second
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list of kmods which is a blacklist, applied after the first.
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This reduces the libguestfs initrd size from 39M down to 17M, with
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concomitant small reductions in boot time.
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---
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src/ext2_initrd.ml | 10 +++++++++-
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1 file changed, 9 insertions(+), 1 deletion(-)
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diff --git a/src/ext2_initrd.ml b/src/ext2_initrd.ml
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index f3be0ef..b583d53 100644
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--- a/src/ext2_initrd.ml
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+++ b/src/ext2_initrd.ml
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@@ -46,6 +46,13 @@ let kmods = [
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"ibmvscsic.ko*";
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]
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+(* A blacklist of kmods which match the above patterns, but which we
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+ * subsequently remove.
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+ *)
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+let not_kmods = [
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+ "virtio-gpu.ko*";
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+]
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+
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let rec build_initrd debug tmpdir modpath initrd =
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if debug >= 1 then
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printf "supermin: ext2: creating minimal initrd '%s'\n%!" initrd;
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@@ -65,7 +72,8 @@ let rec build_initrd debug tmpdir modpath initrd =
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fun topset modl ->
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let m = Filename.basename modl in
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let matches wildcard = fnmatch wildcard m [FNM_PATHNAME] in
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- if List.exists matches kmods then
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+ if List.exists matches kmods && not (List.exists matches not_kmods)
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+ then
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StringSet.add modl topset
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else
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topset
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--
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2.5.0
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