From 412322f2a251ec5a48b7d80dfd4b1628282d9b93 Mon Sep 17 00:00:00 2001
From: David Srbecky <dsrbecky@google.com>
Date: Wed, 3 Feb 2021 16:51:22 +0000
Subject: [PATCH] Set block-size for XZ mini-debug-info compression.

This allows the compression to be done on multiple threads
and more importantly, it allows libunwindstack to decompress
only the needed blocks, which reduces unwind time and memory.

Bug: 110133331
Test: verify lazy decompression in libunwindstack
Change-Id: Ia3f597928edcbc85acdf05cb5c83ac7fced39148
---
 scripts/strip.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/strip.sh b/scripts/strip.sh
index 40f018425..5b7a6da7e 100755
--- a/scripts/strip.sh
+++ b/scripts/strip.sh
@@ -89,7 +89,7 @@ do_strip_keep_mini_debug_info() {
         "${CROSS_COMPILE}objcopy" --rename-section .debug_frame=saved_debug_frame "${outfile}.debug" "${outfile}.mini_debuginfo"
         "${CROSS_COMPILE}objcopy" -S --remove-section .gdb_index --remove-section .comment --keep-symbols="${outfile}.keep_symbols" "${outfile}.mini_debuginfo"
         "${CROSS_COMPILE}objcopy" --rename-section saved_debug_frame=.debug_frame "${outfile}.mini_debuginfo"
-        "${XZ}" "${outfile}.mini_debuginfo"
+        "${XZ}" --block-size=64k --threads=0 "${outfile}.mini_debuginfo"
 
         "${CLANG_BIN}/llvm-objcopy" --add-section .gnu_debugdata="${outfile}.mini_debuginfo.xz" "${outfile}.tmp"
         rm -f "${outfile}.dynsyms" "${outfile}.funcsyms" "${outfile}.keep_symbols" "${outfile}.debug" "${outfile}.mini_debuginfo" "${outfile}.mini_debuginfo.xz"