linux-kernel - [PATCH 01/17] clocksource: arch_timer: Set dynamic irq affinity on mmio clockevent

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1394577653-8615-1-git-send-email-daniel.lezcano@linaro.org>
Date:	Tue, 11 Mar 2014 23:40:37 +0100
From:	Daniel Lezcano <daniel.lezcano@...aro.org>
To:	tglx@...utronix.de, mingo@...nel.org
Cc:	linux-kernel@...r.kernel.org, dan.carpenter@...cle.com,
	ezequiel.garcia@...e-electrons.com, ivan.khoronzhuk@...com,
	linus.walleij@...aro.org, magnus.damm@...il.com,
	matthias.bgg@...il.com, soren.brinkmann@...inx.com,
	sboyd@...eaurora.org
Subject: [PATCH 01/17] clocksource: arch_timer: Set dynamic irq affinity on mmio clockevent

From: Stephen Boyd <sboyd@...eaurora.org>

Set the CLOCK_EVT_FEAT_DYNIRQ flag on the memory mapped
clockevent so that we save power by waking up the CPU with the
next event when this timer is used in broadcast mode.

Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
---
 drivers/clocksource/arm_arch_timer.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index 95fb944..57e823c 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -277,6 +277,7 @@ static void __arch_timer_setup(unsigned type,
 			clk->set_next_event = arch_timer_set_next_event_phys;
 		}
 	} else {
+		clk->features |= CLOCK_EVT_FEAT_DYNIRQ;
 		clk->name = "arch_mem_timer";
 		clk->rating = 400;
 		clk->cpumask = cpu_all_mask;
-- 
1.7.9.5

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/