The patch titled Subject: lib: vsprintf: optimize put_dec_trunc8() has been removed from the -mm tree. Its filename was lib-vsprintf-optimize-put_dec_trunc8.patch This patch was dropped because it was merged into mainline or a subsystem tree ------------------------------------------------------ From: George Spelvin <linux@xxxxxxxxxxx> Subject: lib: vsprintf: optimize put_dec_trunc8() If you're going to have a conditional branch after each 32x32->64-bit multiply, might as well shrink the code and make it a loop. This also avoids using the long multiply for small integers. (This leaves the comments in a confusing state, but that's a separate patch to make review easier.) Signed-off-by: George Spelvin <linux@xxxxxxxxxxx> Cc: Denys Vlasenko <vda.linux@xxxxxxxxxxxxxx> Cc: Michal Nazarewicz <mina86@xxxxxxxxxx> Cc: Rabin Vincent <rabin@xxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- lib/vsprintf.c | 22 ++++++---------------- 1 file changed, 6 insertions(+), 16 deletions(-) diff -puN lib/vsprintf.c~lib-vsprintf-optimize-put_dec_trunc8 lib/vsprintf.c --- a/lib/vsprintf.c~lib-vsprintf-optimize-put_dec_trunc8 +++ a/lib/vsprintf.c @@ -174,22 +174,12 @@ char *put_dec_trunc8(char *buf, unsigned unsigned q; /* Copy of previous function's body with added early returns */ - q = (r * (uint64_t)0x1999999a) >> 32; - *buf++ = (r - 10 * q) + '0'; /* 2 */ - if (q == 0) - return buf; - r = (q * (uint64_t)0x1999999a) >> 32; - *buf++ = (q - 10 * r) + '0'; /* 3 */ - if (r == 0) - return buf; - q = (r * (uint64_t)0x1999999a) >> 32; - *buf++ = (r - 10 * q) + '0'; /* 4 */ - if (q == 0) - return buf; - r = (q * (uint64_t)0x1999999a) >> 32; - *buf++ = (q - 10 * r) + '0'; /* 5 */ - if (r == 0) - return buf; + while (r >= 10000) { + q = r + '0'; + r = (r * (uint64_t)0x1999999a) >> 32; + *buf++ = q - 10*r; + } + q = (r * 0x199a) >> 16; *buf++ = (r - 10 * q) + '0'; /* 6 */ if (q == 0) _ Patches currently in -mm which might be from linux@xxxxxxxxxxx are origin.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html