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X-OriginatorOrg: freescale.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 16 Feb 2015 15:51:20.5737 (UTC) X-MS-Exchange-CrossTenant-Id: 710a03f5-10f6-4d38-9ff4-a80b81da590d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=710a03f5-10f6-4d38-9ff4-a80b81da590d; Ip=[192.88.168.50] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BY2PR03MB457 X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" From: Hai-Ying Wang Change-Id: I863d5c15c7f35f9de4ea3d985e4ff467167924b7 Signed-off-by: Hai-Ying Wang --- drivers/soc/freescale/bman_portal.c | 45 ++++++++++++++++++++++++++++++++++++- 1 file changed, 44 insertions(+), 1 deletion(-) diff --git a/drivers/soc/freescale/bman_portal.c b/drivers/soc/freescale/bman_portal.c index a91081c..f484a91 100644 --- a/drivers/soc/freescale/bman_portal.c +++ b/drivers/soc/freescale/bman_portal.c @@ -30,6 +30,9 @@ */ #include "bman_priv.h" +#ifdef CONFIG_HOTPLUG_CPU +#include +#endif /* * Global variables of the max portal/pool number this bman version supported @@ -180,7 +183,7 @@ static int __init parse_bportals(char *str) } __setup("bportals=", parse_bportals); -static void bman_offline_cpu(unsigned int cpu) +static void __cold bman_offline_cpu(unsigned int cpu) { struct bman_portal *p = (struct bman_portal *)affine_bportals[cpu]; const struct bm_portal_config *pcfg; @@ -192,6 +195,42 @@ static void bman_offline_cpu(unsigned int cpu) } } +#ifdef CONFIG_HOTPLUG_CPU +static void __cold bman_online_cpu(unsigned int cpu) +{ + struct bman_portal *p = (struct bman_portal *)affine_bportals[cpu]; + const struct bm_portal_config *pcfg; + + if (p) { + pcfg = bman_get_bm_portal_config(p); + if (pcfg) + irq_set_affinity(pcfg->public_cfg.irq, cpumask_of(cpu)); + } +} + +static int __cold bman_hotplug_cpu_callback(struct notifier_block *nfb, + unsigned long action, void *hcpu) +{ + unsigned int cpu = (unsigned long)hcpu; + + switch (action) { + case CPU_ONLINE: + case CPU_ONLINE_FROZEN: + bman_online_cpu(cpu); + break; + case CPU_DOWN_PREPARE: + case CPU_DOWN_PREPARE_FROZEN: + bman_offline_cpu(cpu); + } + + return NOTIFY_OK; +} + +static struct notifier_block bman_hotplug_cpu_notifier = { + .notifier_call = bman_hotplug_cpu_callback, +}; +#endif /* CONFIG_HOTPLUG_CPU */ + /* Initialise the BMan driver. The meat of this function deals with portals. The * following describes the flow of portal-handling, the code "steps" refer to * this description; @@ -326,5 +365,9 @@ int __init bman_init(void) for_each_cpu(cpu, &offline_cpus) bman_offline_cpu(cpu); +#ifdef CONFIG_HOTPLUG_CPU + register_hotcpu_notifier(&bman_hotplug_cpu_notifier); +#endif + return 0; }