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This makes the patches which were just copied in the previous commit apply on top of kernel 4.19. The patches in the backports-4.19 folder were checked if they are really in kernel 4.19 based on the title and only removed if they were found in the upstream kernel. The following additional patches form the pending folder went into upstream Linux 4.19: pending-4.19/171-usb-dwc2-Fix-inefficient-copy-of-unaligned-buffers.patch pending-4.19/190-2-5-e1000e-Fix-wrong-comment-related-to-link-detection.patch pending-4.19/478-mtd-spi-nor-Add-support-for-XM25QH64A-and-XM25QH128A.patch pending-4.19/479-mtd-spi-nor-add-eon-en25qh32.patch pending-4.19/950-tty-serial-exar-generalize-rs485-setup.patch pending-4.19/340-MIPS-mm-remove-mips_dma_mapping_error.patch Bigger changes were introduced to the m25p80 spi nor driver, as far as I saw it in the new code, it now has the functionality provided in this patch: pending-4.19/450-mtd-m25p80-allow-fallback-from-spi_flash_read-to-reg.patch Part of this patch went upstream independent of OpenWrt: hack-4.19/220-gc_sections.patch This patch was reworked to match the changes done upstream. The MIPS DMA API changed a lot, this patch was rewritten to match the new DMA handling: pending-4.19/341-MIPS-mm-remove-no-op-dma_map_ops-where-possible.patch I did bigger manual changes to the following patches and I am not 100% sure if they are all correct: pending-4.19/0931-w1-gpio-fix-problem-with-platfom-data-in-w1-gpio.patch pending-4.19/411-mtd-partial_eraseblock_write.patch pending-4.19/600-netfilter_conntrack_flush.patch pending-4.19/611-netfilter_match_bypass_default_table.patch pending-4.19/670-ipv6-allow-rejecting-with-source-address-failed-policy.patch hack-4.19/211-host_tools_portability.patch hack-4.19/221-module_exports.patch hack-4.19/321-powerpc_crtsavres_prereq.patch hack-4.19/902-debloat_proc.patch This is based on patchset from Marko Ratkaj <marko.ratkaj@sartura.hr> Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
120 lines
3.4 KiB
Diff
120 lines
3.4 KiB
Diff
From: Felix Fietkau <nbd@nbd.name>
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Subject: kernel: add a config option for keeping the kallsyms table uncompressed, saving ~9kb kernel size after lzma on ar71xx
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[john@phrozen.org: added to my upstream queue 30.12.2016]
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lede-commit: e0e3509b5ce2ccf93d4d67ea907613f5f7ec2eed
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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init/Kconfig | 11 +++++++++++
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kernel/kallsyms.c | 8 ++++++++
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scripts/kallsyms.c | 12 ++++++++++++
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scripts/link-vmlinux.sh | 4 ++++
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4 files changed, 35 insertions(+)
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--- a/init/Kconfig
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+++ b/init/Kconfig
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@@ -1140,6 +1140,17 @@ config SYSCTL_ARCH_UNALIGN_ALLOW
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the unaligned access emulation.
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see arch/parisc/kernel/unaligned.c for reference
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+config KALLSYMS_UNCOMPRESSED
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+ bool "Keep kallsyms uncompressed"
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+ depends on KALLSYMS
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+ help
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+ Normally kallsyms contains compressed symbols (using a token table),
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+ reducing the uncompressed kernel image size. Keeping the symbol table
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+ uncompressed significantly improves the size of this part in compressed
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+ kernel images.
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+
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+ Say N unless you need compressed kernel images to be small.
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+
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config HAVE_PCSPKR_PLATFORM
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bool
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--- a/kernel/kallsyms.c
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+++ b/kernel/kallsyms.c
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@@ -74,6 +74,11 @@ static unsigned int kallsyms_expand_symb
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* For every byte on the compressed symbol data, copy the table
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* entry for that byte.
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*/
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+#ifdef CONFIG_KALLSYMS_UNCOMPRESSED
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+ memcpy(result, data + 1, len - 1);
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+ result += len - 1;
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+ len = 0;
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+#endif
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while (len) {
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tptr = &kallsyms_token_table[kallsyms_token_index[*data]];
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data++;
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@@ -106,6 +111,9 @@ tail:
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*/
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static char kallsyms_get_symbol_type(unsigned int off)
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{
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+#ifdef CONFIG_KALLSYMS_UNCOMPRESSED
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+ return kallsyms_names[off + 1];
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+#endif
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/*
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* Get just the first code, look it up in the token table,
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* and return the first char from this token.
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--- a/scripts/kallsyms.c
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+++ b/scripts/kallsyms.c
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@@ -61,6 +61,7 @@ static struct addr_range percpu_range =
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static struct sym_entry *table;
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static unsigned int table_size, table_cnt;
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static int all_symbols = 0;
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+static int uncompressed = 0;
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static int absolute_percpu = 0;
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static int base_relative = 0;
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@@ -439,6 +440,9 @@ static void write_src(void)
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free(markers);
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+ if (uncompressed)
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+ return;
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+
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output_label("kallsyms_token_table");
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off = 0;
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for (i = 0; i < 256; i++) {
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@@ -497,6 +501,9 @@ static void *find_token(unsigned char *s
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{
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int i;
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+ if (uncompressed)
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+ return NULL;
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+
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for (i = 0; i < len - 1; i++) {
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if (str[i] == token[0] && str[i+1] == token[1])
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return &str[i];
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@@ -569,6 +576,9 @@ static void optimize_result(void)
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{
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int i, best;
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+ if (uncompressed)
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+ return;
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+
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/* using the '\0' symbol last allows compress_symbols to use standard
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* fast string functions */
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for (i = 255; i >= 0; i--) {
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@@ -751,6 +761,8 @@ int main(int argc, char **argv)
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absolute_percpu = 1;
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else if (strcmp(argv[i], "--base-relative") == 0)
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base_relative = 1;
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+ else if (strcmp(argv[i], "--uncompressed") == 0)
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+ uncompressed = 1;
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else
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usage();
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}
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--- a/scripts/link-vmlinux.sh
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+++ b/scripts/link-vmlinux.sh
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@@ -133,6 +133,10 @@ kallsyms()
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kallsymopt="${kallsymopt} --base-relative"
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fi
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+ if [ -n "${CONFIG_KALLSYMS_UNCOMPRESSED}" ]; then
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+ kallsymopt="${kallsymopt} --uncompressed"
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+ fi
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+
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local aflags="${KBUILD_AFLAGS} ${KBUILD_AFLAGS_KERNEL} \
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${NOSTDINC_FLAGS} ${LINUXINCLUDE} ${KBUILD_CPPFLAGS}"
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