From: Suzuki K Poulose <suzuki.poulose@arm.com> To: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org, will.deacon@arm.com, marc.zyngier@arm.com, mark.rutland@arm.com, sudeep.holla@arm.com, mathieu.poirier@linaro.org, Jonathan.Cameron@huawei.com, Suzuki K Poulose <suzuki.poulose@arm.com>, Leo Yan <leo.yan@linaro.org> Subject: [PATCH v3 3/6] coresight: of: Use of_device_node_get_cpu helper Date: Thu, 27 Jul 2017 16:10:15 +0100 [thread overview] Message-ID: <1501168218-26741-4-git-send-email-suzuki.poulose@arm.com> (raw) In-Reply-To: <1501168218-26741-1-git-send-email-suzuki.poulose@arm.com> Reuse the new generic helper, of_device_node_get_cpu() to map a given CPU phandle to a logical CPU number. Cc: Leo Yan <leo.yan@linaro.org> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/hwtracing/coresight/of_coresight.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c index a187941..42ce9f8 100644 --- a/drivers/hwtracing/coresight/of_coresight.c +++ b/drivers/hwtracing/coresight/of_coresight.c @@ -16,6 +16,7 @@ #include <linux/clk.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/of_platform.h> #include <linux/platform_device.h> @@ -104,26 +105,17 @@ static int of_coresight_alloc_memory(struct device *dev, int of_coresight_get_cpu(const struct device_node *node) { int cpu; - bool found; - struct device_node *dn, *np; + struct device_node *dn; dn = of_parse_phandle(node, "cpu", 0); - /* Affinity defaults to CPU0 */ if (!dn) return 0; - - for_each_possible_cpu(cpu) { - np = of_cpu_device_node_get(cpu); - found = (dn == np); - of_node_put(np); - if (found) - break; - } - of_node_put(dn); - + cpu = of_device_node_get_cpu(dn); /* Affinity to CPU0 if no cpu nodes are found */ - return found ? cpu : 0; + if (cpu >= nr_cpu_ids) + return 0; + return cpu; } EXPORT_SYMBOL_GPL(of_coresight_get_cpu); -- 2.7.5
WARNING: multiple messages have this Message-ID (diff)
From: suzuki.poulose@arm.com (Suzuki K Poulose) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v3 3/6] coresight: of: Use of_device_node_get_cpu helper Date: Thu, 27 Jul 2017 16:10:15 +0100 [thread overview] Message-ID: <1501168218-26741-4-git-send-email-suzuki.poulose@arm.com> (raw) In-Reply-To: <1501168218-26741-1-git-send-email-suzuki.poulose@arm.com> Reuse the new generic helper, of_device_node_get_cpu() to map a given CPU phandle to a logical CPU number. Cc: Leo Yan <leo.yan@linaro.org> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> --- drivers/hwtracing/coresight/of_coresight.c | 20 ++++++-------------- 1 file changed, 6 insertions(+), 14 deletions(-) diff --git a/drivers/hwtracing/coresight/of_coresight.c b/drivers/hwtracing/coresight/of_coresight.c index a187941..42ce9f8 100644 --- a/drivers/hwtracing/coresight/of_coresight.c +++ b/drivers/hwtracing/coresight/of_coresight.c @@ -16,6 +16,7 @@ #include <linux/clk.h> #include <linux/of.h> #include <linux/of_address.h> +#include <linux/of_device.h> #include <linux/of_graph.h> #include <linux/of_platform.h> #include <linux/platform_device.h> @@ -104,26 +105,17 @@ static int of_coresight_alloc_memory(struct device *dev, int of_coresight_get_cpu(const struct device_node *node) { int cpu; - bool found; - struct device_node *dn, *np; + struct device_node *dn; dn = of_parse_phandle(node, "cpu", 0); - /* Affinity defaults to CPU0 */ if (!dn) return 0; - - for_each_possible_cpu(cpu) { - np = of_cpu_device_node_get(cpu); - found = (dn == np); - of_node_put(np); - if (found) - break; - } - of_node_put(dn); - + cpu = of_device_node_get_cpu(dn); /* Affinity to CPU0 if no cpu nodes are found */ - return found ? cpu : 0; + if (cpu >= nr_cpu_ids) + return 0; + return cpu; } EXPORT_SYMBOL_GPL(of_coresight_get_cpu); -- 2.7.5
next prev parent reply other threads:[~2017-07-27 15:12 UTC|newest] Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-07-27 15:10 [PATCH v3 0/6] perf: Support for ARM DynamIQ Shared Unit PMU Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose 2017-07-27 15:10 ` [PATCH v3 1/6] perf: Export perf_event_update_userpage Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose 2017-07-27 15:10 ` [PATCH v3 2/6] of: Add helper for mapping device node to logical CPU number Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose 2017-07-27 15:48 ` Rob Herring 2017-07-27 15:48 ` Rob Herring 2017-07-27 15:48 ` Rob Herring 2017-07-27 16:27 ` Suzuki K Poulose 2017-07-27 16:27 ` Suzuki K Poulose 2017-07-27 16:27 ` Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose [this message] 2017-07-27 15:10 ` [PATCH v3 3/6] coresight: of: Use of_device_node_get_cpu helper Suzuki K Poulose 2017-07-27 15:10 ` [PATCH v3 4/6] irqchip: gic-v3: " Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose 2017-07-27 15:10 ` [PATCH v3 5/6] dt-bindings: Document devicetree binding for ARM DSU PMU Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose 2017-07-27 15:52 ` Rob Herring 2017-07-27 15:52 ` Rob Herring 2017-07-27 15:52 ` Rob Herring 2017-07-27 16:09 ` Suzuki K Poulose 2017-07-27 16:09 ` Suzuki K Poulose 2017-07-27 16:09 ` Suzuki K Poulose 2017-07-27 15:10 ` [PATCH v3 6/6] perf: ARM DynamIQ Shared Unit PMU support Suzuki K Poulose 2017-07-27 15:10 ` Suzuki K Poulose
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1501168218-26741-4-git-send-email-suzuki.poulose@arm.com \ --to=suzuki.poulose@arm.com \ --cc=Jonathan.Cameron@huawei.com \ --cc=leo.yan@linaro.org \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=marc.zyngier@arm.com \ --cc=mark.rutland@arm.com \ --cc=mathieu.poirier@linaro.org \ --cc=sudeep.holla@arm.com \ --cc=will.deacon@arm.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.