From: Roy Pledge <Roy.Pledge@freescale.com>
To: <linuxppc-dev@lists.ozlabs.org>, <scottwood@freescale.com>
Cc: <netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: [PATCH 11/11] soc/qman: add qman_delete_cgr_safe()
Date: Thu, 9 Jul 2015 16:22:02 -0400 [thread overview]
Message-ID: <1436473322-21247-12-git-send-email-Roy.Pledge@freescale.com> (raw)
In-Reply-To: <1436473322-21247-1-git-send-email-Roy.Pledge@freescale.com>
From: Madalin Bucur <madalin.bucur@freescale.com>
Add qman_delete_cgr_safe() that can be called from any CPU.
This in turn schedules qman_delete_cgr() on the proper CPU.
Signed-off-by: Madalin Bucur <madalin.bucur@freescale.com>
Signed-off-by: Roy Pledge <Roy.Pledge@freescale.com>
---
drivers/soc/fsl/qbman/qman_api.c | 46 ++++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
diff --git a/drivers/soc/fsl/qbman/qman_api.c b/drivers/soc/fsl/qbman/qman_api.c
index 93f43dd..5dbcd94 100644
--- a/drivers/soc/fsl/qbman/qman_api.c
+++ b/drivers/soc/fsl/qbman/qman_api.c
@@ -2459,6 +2459,8 @@ EXPORT_SYMBOL(qman_modify_cgr);
QM_CHANNEL_SWPORTAL0))
#define PORTAL_IDX(n) (n->config->public_cfg.channel - QM_CHANNEL_SWPORTAL0)
+static u8 qman_cgr_cpus[__CGR_NUM];
+
int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
struct qm_mcc_initcgr *opts)
{
@@ -2475,7 +2477,10 @@ int qman_create_cgr(struct qman_cgr *cgr, u32 flags,
if (cgr->cgrid >= __CGR_NUM)
return -EINVAL;
+ preempt_disable();
p = get_affine_portal();
+ qman_cgr_cpus[cgr->cgrid] = smp_processor_id();
+ preempt_enable();
memset(&local_opts, 0, sizeof(struct qm_mcc_initcgr));
cgr->chan = p->config->public_cfg.channel;
@@ -2617,6 +2622,47 @@ put_portal:
}
EXPORT_SYMBOL(qman_delete_cgr);
+struct cgr_comp {
+ struct qman_cgr *cgr;
+ struct completion completion;
+};
+
+static int qman_delete_cgr_thread(void *p)
+{
+ struct cgr_comp *cgr_comp = (struct cgr_comp *)p;
+ int res;
+
+ res = qman_delete_cgr((struct qman_cgr *)cgr_comp->cgr);
+ complete(&cgr_comp->completion);
+
+ return res;
+}
+
+void qman_delete_cgr_safe(struct qman_cgr *cgr)
+{
+ struct task_struct *thread;
+ struct cgr_comp cgr_comp;
+
+ preempt_disable();
+ if (qman_cgr_cpus[cgr->cgrid] != smp_processor_id()) {
+ init_completion(&cgr_comp.completion);
+ cgr_comp.cgr = cgr;
+ thread = kthread_create(qman_delete_cgr_thread, &cgr_comp,
+ "cgr_del");
+
+ if (likely(!IS_ERR(thread))) {
+ kthread_bind(thread, qman_cgr_cpus[cgr->cgrid]);
+ wake_up_process(thread);
+ wait_for_completion(&cgr_comp.completion);
+ preempt_enable();
+ return;
+ }
+ }
+ qman_delete_cgr(cgr);
+ preempt_enable();
+}
+EXPORT_SYMBOL(qman_delete_cgr_safe);
+
int qman_set_wpm(int wpm_enable)
{
return qm_set_wpm(wpm_enable);
--
1.7.9.5
prev parent reply other threads:[~2015-07-09 20:37 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-09 20:21 [PATCH 00/11] Freescale DPAA QBMan Drivers Roy Pledge
2015-07-09 20:21 ` [PATCH 01/11] powerpc: re-add devm_ioremap_prot() Roy Pledge
2015-07-09 20:21 ` [PATCH 02/11] soc/fsl: Introduce DPAA BMan device management driver Roy Pledge
2015-07-10 8:38 ` Paul Bolle
2015-07-10 17:31 ` Scott Wood
2015-07-10 18:29 ` Roy Pledge
2015-07-10 18:50 ` Scott Wood
2015-07-22 16:15 ` Horia Geantă
2015-07-10 11:36 ` Paul Bolle
2015-07-10 17:33 ` Scott Wood
2015-07-10 20:57 ` Roy Pledge
2015-07-10 21:12 ` Scott Wood
2015-07-09 20:21 ` [PATCH 03/11] soc/fsl: Introduce the DPAA BMan portal driver Roy Pledge
2015-07-10 13:32 ` Paul Bolle
2015-07-10 15:19 ` Roy Pledge
2015-07-10 16:47 ` Paul Bolle
2015-07-09 20:21 ` [PATCH 04/11] soc/fsl: Introduce drivers for the DPAA QMan Roy Pledge
2015-07-11 10:34 ` Paul Bolle
2015-07-09 20:21 ` [PATCH 05/11] soc/bman: Add self-tester for BMan driver Roy Pledge
2015-07-09 20:21 ` [PATCH 06/11] soc/qman: Add self-tester for QMan driver Roy Pledge
2015-07-09 20:21 ` [PATCH 07/11] soc/bman: Add debugfs support for the BMan driver Roy Pledge
2015-07-09 20:21 ` [PATCH 08/11] soc/qman: Add debugfs support for the QMan driver Roy Pledge
2015-07-09 20:22 ` [PATCH 09/11] soc/bman: Add HOTPLUG_CPU support to the BMan driver Roy Pledge
2015-07-09 20:22 ` [PATCH 10/11] soc/qman: Add HOTPLUG_CPU support to the QMan driver Roy Pledge
2015-07-09 20:22 ` Roy Pledge [this message]
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