Messages in this thread Patch in this message | | | Date | Wed, 28 Feb 2018 05:09:49 -0800 | From | tip-bot for Baolin Wang <> | Subject | [tip:timers/core] clocksource: Don't walk the clocksource list for empty override |
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Commit-ID: 7f852afe448c95691ead6b57bae5f37562d060b5 Gitweb: https://git.kernel.org/tip/7f852afe448c95691ead6b57bae5f37562d060b5 Author: Baolin Wang <baolin.wang@linaro.org> AuthorDate: Wed, 17 Jan 2018 14:01:28 +0800 Committer: Thomas Gleixner <tglx@linutronix.de> CommitDate: Wed, 28 Feb 2018 14:04:52 +0100
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 <baolin.wang@linaro.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> 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
--- kernel/time/clocksource.c | 4 ++++ 1 file changed, 4 insertions(+)
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;
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