diff options
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/Makefile | 6 | ||||
| -rwxr-xr-x | scripts/link-vmlinux.sh | 6 | ||||
| -rw-r--r-- | scripts/sorttable.c | 2 | ||||
| -rw-r--r-- | scripts/sorttable.h | 124 |
4 files changed, 130 insertions, 8 deletions
diff --git a/scripts/Makefile b/scripts/Makefile index 9adb6d247818..b082d2f93357 100644 --- a/scripts/Makefile +++ b/scripts/Makefile @@ -17,6 +17,7 @@ hostprogs-always-$(CONFIG_SYSTEM_EXTRA_CERTIFICATE) += insert-sys-cert hostprogs-always-$(CONFIG_SYSTEM_REVOCATION_LIST) += extract-cert HOSTCFLAGS_sorttable.o = -I$(srctree)/tools/include +HOSTLDLIBS_sorttable = -lpthread HOSTCFLAGS_asn1_compiler.o = -I$(srctree)/include HOSTCFLAGS_sign-file.o = $(CRYPTO_CFLAGS) HOSTLDLIBS_sign-file = $(CRYPTO_LIBS) @@ -29,7 +30,10 @@ ARCH := x86 endif HOSTCFLAGS_sorttable.o += -I$(srctree)/tools/arch/x86/include HOSTCFLAGS_sorttable.o += -DUNWINDER_ORC_ENABLED -HOSTLDLIBS_sorttable = -lpthread +endif + +ifdef CONFIG_DYNAMIC_FTRACE +HOSTCFLAGS_sorttable.o += -DMCOUNT_SORT_ENABLED endif # The following programs are only built on demand diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh index 9716f285e404..82bc736532f1 100755 --- a/scripts/link-vmlinux.sh +++ b/scripts/link-vmlinux.sh @@ -403,6 +403,9 @@ if [ -n "${CONFIG_DEBUG_INFO_BTF}" -a -n "${CONFIG_BPF}" ]; then ${RESOLVE_BTFIDS} vmlinux fi +info SYSMAP System.map +mksysmap vmlinux System.map + if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then info SORTTAB vmlinux if ! sorttable vmlinux; then @@ -411,9 +414,6 @@ if [ -n "${CONFIG_BUILDTIME_TABLE_SORT}" ]; then fi fi -info SYSMAP System.map -mksysmap vmlinux System.map - # step a (see comment above) if [ -n "${CONFIG_KALLSYMS}" ]; then mksysmap ${kallsyms_vmlinux} .tmp_System.map diff --git a/scripts/sorttable.c b/scripts/sorttable.c index b7c2ad71f9cf..70bdc787ddfb 100644 --- a/scripts/sorttable.c +++ b/scripts/sorttable.c @@ -30,6 +30,8 @@ #include <stdlib.h> #include <string.h> #include <unistd.h> +#include <errno.h> +#include <pthread.h> #include <tools/be_byteshift.h> #include <tools/le_byteshift.h> diff --git a/scripts/sorttable.h b/scripts/sorttable.h index a2baa2fefb13..1e8b77928fa4 100644 --- a/scripts/sorttable.h +++ b/scripts/sorttable.h @@ -19,6 +19,9 @@ #undef extable_ent_size #undef compare_extable +#undef get_mcount_loc +#undef sort_mcount_loc +#undef elf_mcount_loc #undef do_sort #undef Elf_Addr #undef Elf_Ehdr @@ -41,6 +44,9 @@ #ifdef SORTTABLE_64 # define extable_ent_size 16 # define compare_extable compare_extable_64 +# define get_mcount_loc get_mcount_loc_64 +# define sort_mcount_loc sort_mcount_loc_64 +# define elf_mcount_loc elf_mcount_loc_64 # define do_sort do_sort_64 # define Elf_Addr Elf64_Addr # define Elf_Ehdr Elf64_Ehdr @@ -62,6 +68,9 @@ #else # define extable_ent_size 8 # define compare_extable compare_extable_32 +# define get_mcount_loc get_mcount_loc_32 +# define sort_mcount_loc sort_mcount_loc_32 +# define elf_mcount_loc elf_mcount_loc_32 # define do_sort do_sort_32 # define Elf_Addr Elf32_Addr # define Elf_Ehdr Elf32_Ehdr @@ -84,8 +93,6 @@ #if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED) /* ORC unwinder only support X86_64 */ -#include <errno.h> -#include <pthread.h> #include <asm/orc_types.h> #define ERRSTR_MAXSZ 256 @@ -191,7 +198,64 @@ static int compare_extable(const void *a, const void *b) return 1; return 0; } +#ifdef MCOUNT_SORT_ENABLED +struct elf_mcount_loc { + Elf_Ehdr *ehdr; + Elf_Shdr *init_data_sec; + uint_t start_mcount_loc; + uint_t stop_mcount_loc; +}; + +/* Sort the addresses stored between __start_mcount_loc to __stop_mcount_loc in vmlinux */ +static void *sort_mcount_loc(void *arg) +{ + struct elf_mcount_loc *emloc = (struct elf_mcount_loc *)arg; + uint_t offset = emloc->start_mcount_loc - _r(&(emloc->init_data_sec)->sh_addr) + + _r(&(emloc->init_data_sec)->sh_offset); + uint_t count = emloc->stop_mcount_loc - emloc->start_mcount_loc; + unsigned char *start_loc = (void *)emloc->ehdr + offset; + + qsort(start_loc, count/sizeof(uint_t), sizeof(uint_t), compare_extable); + return NULL; +} + +/* Get the address of __start_mcount_loc and __stop_mcount_loc in System.map */ +static void get_mcount_loc(uint_t *_start, uint_t *_stop) +{ + FILE *file_start, *file_stop; + char start_buff[20]; + char stop_buff[20]; + int len = 0; + + file_start = popen(" grep start_mcount System.map | awk '{print $1}' ", "r"); + if (!file_start) { + fprintf(stderr, "get start_mcount_loc error!"); + return; + } + + file_stop = popen(" grep stop_mcount System.map | awk '{print $1}' ", "r"); + if (!file_stop) { + fprintf(stderr, "get stop_mcount_loc error!"); + pclose(file_start); + return; + } + + while (fgets(start_buff, sizeof(start_buff), file_start) != NULL) { + len = strlen(start_buff); + start_buff[len - 1] = '\0'; + } + *_start = strtoul(start_buff, NULL, 16); + + while (fgets(stop_buff, sizeof(stop_buff), file_stop) != NULL) { + len = strlen(stop_buff); + stop_buff[len - 1] = '\0'; + } + *_stop = strtoul(stop_buff, NULL, 16); + pclose(file_start); + pclose(file_stop); +} +#endif static int do_sort(Elf_Ehdr *ehdr, char const *const fname, table_sort_t custom_sort) @@ -217,6 +281,12 @@ static int do_sort(Elf_Ehdr *ehdr, int idx; unsigned int shnum; unsigned int shstrndx; +#ifdef MCOUNT_SORT_ENABLED + struct elf_mcount_loc mstruct; + uint_t _start_mcount_loc = 0; + uint_t _stop_mcount_loc = 0; + pthread_t mcount_sort_thread; +#endif #if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED) unsigned int orc_ip_size = 0; unsigned int orc_size = 0; @@ -253,6 +323,17 @@ static int do_sort(Elf_Ehdr *ehdr, symtab_shndx = (Elf32_Word *)((const char *)ehdr + _r(&s->sh_offset)); +#ifdef MCOUNT_SORT_ENABLED + /* locate the .init.data section in vmlinux */ + if (!strcmp(secstrings + idx, ".init.data")) { + get_mcount_loc(&_start_mcount_loc, &_stop_mcount_loc); + mstruct.ehdr = ehdr; + mstruct.init_data_sec = s; + mstruct.start_mcount_loc = _start_mcount_loc; + mstruct.stop_mcount_loc = _stop_mcount_loc; + } +#endif + #if defined(SORTTABLE_64) && defined(UNWINDER_ORC_ENABLED) /* locate the ORC unwind tables */ if (!strcmp(secstrings + idx, ".orc_unwind_ip")) { @@ -294,6 +375,23 @@ static int do_sort(Elf_Ehdr *ehdr, goto out; } #endif + +#ifdef MCOUNT_SORT_ENABLED + if (!mstruct.init_data_sec || !_start_mcount_loc || !_stop_mcount_loc) { + fprintf(stderr, + "incomplete mcount's sort in file: %s\n", + fname); + goto out; + } + + /* create thread to sort mcount_loc concurrently */ + if (pthread_create(&mcount_sort_thread, NULL, &sort_mcount_loc, &mstruct)) { + fprintf(stderr, + "pthread_create mcount_sort_thread failed '%s': %s\n", + strerror(errno), fname); + goto out; + } +#endif if (!extab_sec) { fprintf(stderr, "no __ex_table in file: %s\n", fname); goto out; @@ -364,11 +462,11 @@ out: void *retval = NULL; /* wait for ORC tables sort done */ rc = pthread_join(orc_sort_thread, &retval); - if (rc) + if (rc) { fprintf(stderr, "pthread_join failed '%s': %s\n", strerror(errno), fname); - else if (retval) { + } else if (retval) { rc = -1; fprintf(stderr, "failed to sort ORC tables '%s': %s\n", @@ -376,5 +474,23 @@ out: } } #endif + +#ifdef MCOUNT_SORT_ENABLED + if (mcount_sort_thread) { + void *retval = NULL; + /* wait for mcount sort done */ + rc = pthread_join(mcount_sort_thread, &retval); + if (rc) { + fprintf(stderr, + "pthread_join failed '%s': %s\n", + strerror(errno), fname); + } else if (retval) { + rc = -1; + fprintf(stderr, + "failed to sort mcount '%s': %s\n", + (char *)retval, fname); + } + } +#endif return rc; } |