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From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
	"Gautham R . Shenoy" <ego@linux.vnet.ibm.com>,
	"Shreyas B . Prabhu" <shreyas@linux.vnet.ibm.com>
Subject: [PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals
Date: Mon, 12 Jun 2017 09:58:32 +1000	[thread overview]
Message-ID: <20170611235835.7400-12-npiggin@gmail.com> (raw)
In-Reply-To: <20170611235835.7400-1-npiggin@gmail.com>

Ensure these don't get put into bouncing cachelines.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 drivers/cpuidle/cpuidle-powernv.c | 10 +++++-----
 drivers/cpuidle/cpuidle-pseries.c |  8 ++++----
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 50b3c2e0306f..9d03326ac05e 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -32,18 +32,18 @@ static struct cpuidle_driver powernv_idle_driver = {
 	.owner            = THIS_MODULE,
 };
 
-static int max_idle_state;
-static struct cpuidle_state *cpuidle_state_table;
+static int max_idle_state __read_mostly;
+static struct cpuidle_state *cpuidle_state_table __read_mostly;
 
 struct stop_psscr_table {
 	u64 val;
 	u64 mask;
 };
 
-static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX];
+static struct stop_psscr_table stop_psscr_table[CPUIDLE_STATE_MAX] __read_mostly;
 
-static u64 snooze_timeout;
-static bool snooze_timeout_en;
+static u64 snooze_timeout __read_mostly;
+static bool snooze_timeout_en __read_mostly;
 
 static int snooze_loop(struct cpuidle_device *dev,
 			struct cpuidle_driver *drv,
diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c
index 7b12bb2ea70f..a404f352d284 100644
--- a/drivers/cpuidle/cpuidle-pseries.c
+++ b/drivers/cpuidle/cpuidle-pseries.c
@@ -25,10 +25,10 @@ struct cpuidle_driver pseries_idle_driver = {
 	.owner            = THIS_MODULE,
 };
 
-static int max_idle_state;
-static struct cpuidle_state *cpuidle_state_table;
-static u64 snooze_timeout;
-static bool snooze_timeout_en;
+static int max_idle_state __read_mostly;
+static struct cpuidle_state *cpuidle_state_table __read_mostly;
+static u64 snooze_timeout __read_mostly;
+static bool snooze_timeout_en __read_mostly;
 
 static inline void idle_loop_prolog(unsigned long *in_purr)
 {
-- 
2.11.0

  parent reply	other threads:[~2017-06-12  0:00 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-11 23:58 [PATCH 00/14 v2] idle performance improvements Nicholas Piggin
2017-06-11 23:58 ` [PATCH 01/14] powerpc/64s: idle move soft interrupt mask logic into C code Nicholas Piggin
2017-06-12  8:37   ` Gautham R Shenoy
2017-06-12 14:46     ` Nicholas Piggin
2017-06-13  4:28       ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 02/14] powerpc/64s: idle hotplug lazy-irq simplification Nicholas Piggin
2017-06-11 23:58 ` [PATCH 03/14] powerpc/64s: idle provide a default idle for POWER9 Nicholas Piggin
2017-06-12  8:53   ` Gautham R Shenoy
2017-06-12 14:46     ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 04/14] powerpc/64s: idle process interrupts from system reset wakeup Nicholas Piggin
2017-06-12  9:41   ` Gautham R Shenoy
2017-06-12 14:51     ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 05/14] powerpc/64s: msgclr when handling doorbell exceptions Nicholas Piggin
2017-06-12 14:38   ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 06/14] powerpc/64s: interrupt replay balance the return branch predictor Nicholas Piggin
2017-06-12 14:41   ` Gautham R Shenoy
2017-06-13  9:51   ` Michael Ellerman
2017-06-13 11:09     ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 07/14] powerpc/64s: idle branch to handler with virtual mode offset Nicholas Piggin
2017-06-11 23:58 ` [PATCH 08/14] powerpc/64s: idle avoid SRR usage in idle sleep/wake paths Nicholas Piggin
2017-06-13 10:25   ` Gautham R Shenoy
2017-06-13 10:45     ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 09/14] powerpc/64s: idle hmi wakeup is unlikely Nicholas Piggin
2017-06-12 15:03   ` Gautham R Shenoy
2017-06-11 23:58 ` [PATCH 10/14] powerpc/64s: cpuidle set polling before enabling irqs Nicholas Piggin
2017-06-12 15:10   ` Gautham R Shenoy
2017-06-12 15:20     ` Nicholas Piggin
2017-06-11 23:58 ` Nicholas Piggin [this message]
2017-06-12 15:30   ` [PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals Gautham R Shenoy
2017-06-12 17:50     ` Vaidyanathan Srinivasan
2017-06-11 23:58 ` [PATCH 12/14] powerpc/64s: cpuidle no memory barrier after break from idle Nicholas Piggin
2017-06-12 17:48   ` Vaidyanathan Srinivasan
2017-06-13 12:47     ` Nicholas Piggin
2017-06-11 23:58 ` [PATCH 13/14] powerpc/64: runlatch CTRL[RUN] set optimisation Nicholas Piggin
2017-06-12 17:11   ` Vaidyanathan Srinivasan
2017-06-13 10:04     ` Michael Ellerman
2017-06-13 11:56       ` Nicholas Piggin
2017-06-13 13:45       ` Benjamin Herrenschmidt
2017-06-14  3:34         ` Michael Ellerman
2017-06-11 23:58 ` [PATCH 14/14] powerpc/64s: idle runlatch switch is done with MSR[EE]=0 Nicholas Piggin
2017-06-12 17:00   ` Vaidyanathan Srinivasan
  -- strict thread matches above, loose matches on Subject: below --
2017-06-08 15:50 [PATCH 00/14] idle performance improvements Nicholas Piggin
2017-06-08 15:51 ` [PATCH 11/14] powerpc/64s: cpuidle read mostly for common globals Nicholas Piggin

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