The branch main has been updated by cperciva: URL: https://cgit.FreeBSD.org/src/commit/?id=0a35c4b3cab563e3ab1bf5b7b49bf26e0bb7cb04
commit 0a35c4b3cab563e3ab1bf5b7b49bf26e0bb7cb04 Author: Colin Percival <[email protected]> AuthorDate: 2021-09-25 03:20:33 +0000 Commit: Colin Percival <[email protected]> CommitDate: 2021-09-25 03:23:49 +0000 loader printf: Profile with TSLOG Now that the loader tslog code doesn't call printf, we can profile printf using TSLOG. On an EC2 c5.xlarge instance, we spend roughly 45 ms here (out of roughly 500 ms), presumably due to the time spent writing output to the console. MFC after: 1 week Sponsored by: https://www.patreon.com/cperciva --- stand/libsa/printf.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/stand/libsa/printf.c b/stand/libsa/printf.c index 1602a2dc519d..4de547b644dd 100644 --- a/stand/libsa/printf.c +++ b/stand/libsa/printf.c @@ -271,6 +271,7 @@ kvprintf(char const *fmt, kvprintf_fn_t *func, void *arg, int radix, va_list ap) char padc; int stop = 0, retval = 0; + TSENTER(); num = 0; if (!func) d = (char *) arg; @@ -287,8 +288,10 @@ kvprintf(char const *fmt, kvprintf_fn_t *func, void *arg, int radix, va_list ap) padc = ' '; width = 0; while ((ch = (u_char)*fmt++) != '%' || stop) { - if (ch == '\0') + if (ch == '\0') { + TSEXIT(); return (retval); + } PCHAR(ch); } percent = fmt - 1; _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-main To unsubscribe, send any mail to "[email protected]"
