From: Baolin Wang Date: Wed, 17 Jan 2018 06:01:28 +0000 (+0800) Subject: clocksource: Don't walk the clocksource list for empty override X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=7f852afe448c95691ead6b57bae5f37562d060b5;p=openwrt%2Fstaging%2Fblogic.git clocksource: Don't walk the clocksource list for empty override If the override clocksource name is empty there is no point in walking the clocksource list for a match. Signed-off-by: Baolin Wang Signed-off-by: Thomas Gleixner Cc: arnd@arndb.de Cc: sboyd@codeaurora.org Cc: broonie@kernel.org Cc: john.stultz@linaro.org Link: https://lkml.kernel.org/r/069ce2a605546bcad6552968cff755f0a03f9f10.1516167691.git.baolin.wang@linaro.org --- diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c index 65f9e3f24dde..c5fdcb13200f 100644 --- a/kernel/time/clocksource.c +++ b/kernel/time/clocksource.c @@ -594,6 +594,9 @@ static void __clocksource_select(bool skipcur) if (!best) return; + if (!strlen(override_name)) + goto found; + /* Check for the override clocksource. */ list_for_each_entry(cs, &clocksource_list, list) { if (skipcur && cs == curr_clocksource) @@ -625,6 +628,7 @@ static void __clocksource_select(bool skipcur) break; } +found: if (curr_clocksource != best && !timekeeping_notify(best)) { pr_info("Switched to clocksource %s\n", best->name); curr_clocksource = best;