From a1dc65aaf470fa01f394e01ab6747d135961a0ae Mon Sep 17 00:00:00 2001 From: Julien Grall Date: Wed, 21 Aug 2019 22:19:17 +0100 Subject: [PATCH] xen/console: debugtrace: Compute the buffer length is O(1) rather O(n) This was meant to be part of commit e0bf98394e "xen/console: Fix build when CONFIG_DEBUG_TRACE" but not addressed before been committed. Signed-off-by: Julien Grall Acked-by: Andrew Cooper --- xen/drivers/char/console.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/drivers/char/console.c b/xen/drivers/char/console.c index 75e493466e..d67e1993f2 100644 --- a/xen/drivers/char/console.c +++ b/xen/drivers/char/console.c @@ -1187,7 +1187,7 @@ static void debugtrace_dump_worker(void) ASSERT(debugtrace_buf[debugtrace_bytes - 1] == 0); if ( debugtrace_buf[debugtrace_prd] != '\0' ) sercon_puts(&debugtrace_buf[debugtrace_prd], - strlen(&debugtrace_buf[debugtrace_prd])); + debugtrace_bytes - debugtrace_prd - 1); /* Print youngest portion of the ring. */ debugtrace_buf[debugtrace_prd] = '\0'; -- 2.30.2