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Tue, 15 Sep 2020 14:40:18 +0100 From: Marc Zyngier To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] irqchip/gic: Cleanup Franken-GIC handling Date: Tue, 15 Sep 2020 14:39:44 +0100 Message-Id: <20200915133944.1285456-3-maz@kernel.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200915133944.1285456-1-maz@kernel.org> References: <20200915133944.1285456-1-maz@kernel.org> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 62.31.163.78 X-SA-Exim-Rcpt-To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, jason@lakedaemon.net, m.szyprowski@samsung.com, kernel-team@android.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200915_094020_726170_FD380526 X-CRM114-Status: GOOD ( 19.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Gleixner , kernel-team@android.com, Jason Cooper , Marek Szyprowski Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Now that we have a static key identifying Samsung's unique creation, let's replace the indirect call to compute the base addresses by a simple test on the static key. Faster, cheaper, negative diffstat. Signed-off-by: Marc Zyngier --- drivers/irqchip/irq-gic.c | 48 +++++++++------------------------------ 1 file changed, 11 insertions(+), 37 deletions(-) diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c index 84a2d2a1aab7..98743afdaea6 100644 --- a/drivers/irqchip/irq-gic.c +++ b/drivers/irqchip/irq-gic.c @@ -83,9 +83,6 @@ struct gic_chip_data { #endif struct irq_domain *domain; unsigned int gic_irqs; -#ifdef CONFIG_GIC_NON_BANKED - void __iomem *(*get_base)(union gic_base *); -#endif }; #ifdef CONFIG_BL_SWITCHER @@ -125,32 +122,6 @@ static struct gic_chip_data gic_data[CONFIG_ARM_GIC_MAX_NR] __read_mostly; static struct gic_kvm_info gic_v2_kvm_info; #ifdef CONFIG_GIC_NON_BANKED -static void __iomem *gic_get_percpu_base(union gic_base *base) -{ - return raw_cpu_read(*base->percpu_base); -} - -static void __iomem *gic_get_common_base(union gic_base *base) -{ - return base->common_base; -} - -static inline void __iomem *gic_data_dist_base(struct gic_chip_data *data) -{ - return data->get_base(&data->dist_base); -} - -static inline void __iomem *gic_data_cpu_base(struct gic_chip_data *data) -{ - return data->get_base(&data->cpu_base); -} - -static inline void gic_set_base_accessor(struct gic_chip_data *data, - void __iomem *(*f)(union gic_base *)) -{ - data->get_base = f; -} - static DEFINE_STATIC_KEY_FALSE(frankengic_key); static DEFINE_PER_CPU(u32, sgi_intid); @@ -173,10 +144,20 @@ static inline u32 get_sgi_intid(void) { return this_cpu_read(sgi_intid); } + +static inline void __iomem *__get_base(union gic_base *base) +{ + if (is_frankengic()) + return raw_cpu_read(*base->percpu_base); + + return base->common_base; +} + +#define gic_data_dist_base(d) __get_base(&(d)->dist_base) +#define gic_data_cpu_base(d) __get_base(&(d)->cpu_base) #else #define gic_data_dist_base(d) ((d)->dist_base.common_base) #define gic_data_cpu_base(d) ((d)->cpu_base.common_base) -#define gic_set_base_accessor(d, f) #define enable_frankengic() do { } while(0) #define is_frankengic() false #define set_sgi_intid(i) do { } while(0) @@ -741,11 +722,6 @@ static int gic_notifier(struct notifier_block *self, unsigned long cmd, void *v) int i; for (i = 0; i < CONFIG_ARM_GIC_MAX_NR; i++) { -#ifdef CONFIG_GIC_NON_BANKED - /* Skip over unused GICs */ - if (!gic_data[i].get_base) - continue; -#endif switch (cmd) { case CPU_PM_ENTER: gic_cpu_save(&gic_data[i]); @@ -1187,7 +1163,6 @@ static int gic_init_bases(struct gic_chip_data *gic, } enable_frankengic(); - gic_set_base_accessor(gic, gic_get_percpu_base); } else { /* Normal, sane GIC... */ WARN(gic->percpu_offset, @@ -1195,7 +1170,6 @@ static int gic_init_bases(struct gic_chip_data *gic, gic->percpu_offset); gic->dist_base.common_base = gic->raw_dist_base; gic->cpu_base.common_base = gic->raw_cpu_base; - gic_set_base_accessor(gic, gic_get_common_base); } /* -- 2.28.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel