diff options
| -rw-r--r-- | archival/bz/blocksort.c | 2 | ||||
| -rw-r--r-- | archival/cpio.c | 2 | ||||
| -rw-r--r-- | archival/lzop.c | 2 | ||||
| -rw-r--r-- | docs/keep_data_small.txt | 31 | ||||
| -rw-r--r-- | libbb/dump.c | 2 | ||||
| -rw-r--r-- | miscutils/hdparm.c | 2 | ||||
| -rw-r--r-- | runit/svlogd.c | 2 | ||||
| -rw-r--r-- | shell/hush.c | 4 | ||||
| -rw-r--r-- | shell/math.c | 2 | ||||
| -rw-r--r-- | util-linux/ipcs.c | 2 |
10 files changed, 41 insertions, 10 deletions
diff --git a/archival/bz/blocksort.c b/archival/bz/blocksort.c index 0e73ffe..f70c370 100644 --- a/archival/bz/blocksort.c +++ b/archival/bz/blocksort.c @@ -585,7 +585,7 @@ uint8_t mmed3(uint8_t a, uint8_t b, uint8_t c) #define MAIN_QSORT_DEPTH_THRESH (BZ_N_RADIX + BZ_N_QSORT) #define MAIN_QSORT_STACK_SIZE 100 -static +static NOINLINE void mainQSort3(uint32_t* ptr, uint8_t* block, uint16_t* quadrant, diff --git a/archival/cpio.c b/archival/cpio.c index bb57857..ef22899 100644 --- a/archival/cpio.c +++ b/archival/cpio.c @@ -117,7 +117,7 @@ static off_t cpio_pad4(off_t size) /* Return value will become exit code. * It's ok to exit instead of return. */ -static int cpio_o(void) +static NOINLINE int cpio_o(void) { static const char trailer[] ALIGN1 = "TRAILER!!!"; struct name_s { diff --git a/archival/lzop.c b/archival/lzop.c index b4757e8..5f2744d 100644 --- a/archival/lzop.c +++ b/archival/lzop.c @@ -75,7 +75,7 @@ static void copy3(uint8_t* ip, const uint8_t* m_pos, unsigned off) #define TEST_IP (ip < ip_end) #define TEST_OP (op <= op_end) -static int lzo1x_optimize(uint8_t *in, unsigned in_len, +static NOINLINE int lzo1x_optimize(uint8_t *in, unsigned in_len, uint8_t *out, unsigned *out_len, void* wrkmem UNUSED_PARAM) { diff --git a/docs/keep_data_small.txt b/docs/keep_data_small.txt index 2ddbefa..2ba24e4 100644 --- a/docs/keep_data_small.txt +++ b/docs/keep_data_small.txt @@ -214,3 +214,34 @@ Result (non-static busybox built against glibc): text data bss dec hex filename 634416 2736 23856 661008 a1610 busybox 632580 2672 22944 658196 a0b14 busybox_noalign + + + + Keeping code small + +Set CONFIG_EXTRA_CFLAGS="-fno-inline-functions-called-once", +produce "make bloatcheck", see the biggest auto-inlined functions. +Now, set CONFIG_EXTRA_CFLAGS back to "", but add NOINLINE +to some of these functions. In 1.16.x timeframe, the results were +(annotated "make bloatcheck" output): + +function old new delta +expand_vars_to_list - 1712 +1712 win +lzo1x_optimize - 1429 +1429 win +arith_apply - 1326 +1326 win +read_interfaces - 1163 +1163 loss, leave w/o NOINLINE +logdir_open - 1148 +1148 win +check_deps - 1148 +1148 loss +rewrite - 1039 +1039 win +run_pipe 358 1396 +1038 win +write_status_file - 1029 +1029 almost the same, leave w/o NOINLINE +dump_identity - 987 +987 win +mainQSort3 - 921 +921 win +parse_one_line - 916 +916 loss +summarize - 897 +897 almost the same +do_shm - 884 +884 win +cpio_o - 863 +863 win +subCommand - 841 +841 loss +receive - 834 +834 loss + +855 bytes saved in total. diff --git a/libbb/dump.c b/libbb/dump.c index 2e777c3..bef485e 100644 --- a/libbb/dump.c +++ b/libbb/dump.c @@ -96,7 +96,7 @@ static NOINLINE int bb_dump_size(FS *fs) return cur_size; } -static void rewrite(priv_dumper_t *dumper, FS *fs) +static NOINLINE void rewrite(priv_dumper_t *dumper, FS *fs) { enum { NOTOKAY, USEBCNT, USEPREC } sokay; PR *pr, **nextpr = NULL; diff --git a/miscutils/hdparm.c b/miscutils/hdparm.c index 0917b41..65c11ec 100644 --- a/miscutils/hdparm.c +++ b/miscutils/hdparm.c @@ -1185,7 +1185,7 @@ static const char BuffType[] ALIGN1 = "unknown""\0" "1Sect""\0" "DualPort""\0" "DualPortCache" ; -static void dump_identity(const struct hd_driveid *id) +static NOINLINE void dump_identity(const struct hd_driveid *id) { int i; const unsigned short *id_regs = (const void*) id; diff --git a/runit/svlogd.c b/runit/svlogd.c index 34ceadf..b7fd152 100644 --- a/runit/svlogd.c +++ b/runit/svlogd.c @@ -603,7 +603,7 @@ static void logdir_close(struct logdir *ld) ld->processor = NULL; } -static unsigned logdir_open(struct logdir *ld, const char *fn) +static NOINLINE unsigned logdir_open(struct logdir *ld, const char *fn) { char buf[128]; unsigned now; diff --git a/shell/hush.c b/shell/hush.c index 3012a1f..ec38023 100644 --- a/shell/hush.c +++ b/shell/hush.c @@ -2151,7 +2151,7 @@ static char *expand_pseudo_dquoted(const char *str) * to be filled). This routine is extremely tricky: has to deal with * variables/parameters with whitespace, $* and $@, and constructs like * 'echo -$*-'. If you play here, you must run testsuite afterwards! */ -static int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask) +static NOINLINE int expand_vars_to_list(o_string *output, int n, char *arg, char or_mask) { /* or_mask is either 0 (normal case) or 0x80 - * expansion of right-hand side of assignment == 1-element expand. @@ -3750,7 +3750,7 @@ static int checkjobs_and_fg_shell(struct pipe* fg_pipe) * backgrounded: cmd & { list } & * subshell: ( list ) [&] */ -static int run_pipe(struct pipe *pi) +static NOINLINE int run_pipe(struct pipe *pi) { static const char *const null_ptr = NULL; int i; diff --git a/shell/math.c b/shell/math.c index d75bcae..3791b84 100644 --- a/shell/math.c +++ b/shell/math.c @@ -293,7 +293,7 @@ arith_lookup_val(v_n_t *t, a_e_h_t *math_hooks) /* "applying" a token means performing it on the top elements on the integer * stack. For a unary operator it will only change the top element, but a * binary operator will pop two arguments and push a result */ -static int +static NOINLINE int arith_apply(operator op, v_n_t *numstack, v_n_t **numstackptr, a_e_h_t *math_hooks) { v_n_t *numptr_m1; diff --git a/util-linux/ipcs.c b/util-linux/ipcs.c index 9201257..c8c6d76 100644 --- a/util-linux/ipcs.c +++ b/util-linux/ipcs.c @@ -115,7 +115,7 @@ static void print_perms(int id, struct ipc_perm *ipcp) } -static void do_shm(void) +static NOINLINE void do_shm(void) { int maxid, shmid, id; struct shmid_ds shmseg; |