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From: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
To: rsanford@akamai.com
Cc: dev@dpdk.org, john.mcnamara@intel.com,
	Erik Carrillo <erik.g.carrillo@intel.com>
Subject: [PATCH v4 2/3] timer: handle timers installed from non-EAL threads
Date: Tue, 19 Sep 2017 12:02:27 -0500	[thread overview]
Message-ID: <1505840548-77004-3-git-send-email-erik.g.carrillo@intel.com> (raw)
In-Reply-To: <1505840548-77004-1-git-send-email-erik.g.carrillo@intel.com>

From: Erik Carrillo <erik.g.carrillo@intel.com>

This commit adds support for timers being created from
non-EAL threads;  it maps timers from all such threads to
lcore id RTE_MAX_LCORE, and puts them all in a corresponding
skiplist.

Signed-off-by: Erik Gabriel Carrillo <erik.g.carrillo@intel.com>
---
v3:
* Rebased patch on reworked parent commit

v2:
* Address checkpatch warnings

 lib/librte_timer/rte_timer.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/lib/librte_timer/rte_timer.c b/lib/librte_timer/rte_timer.c
index 1f4141e..c489c5f 100644
--- a/lib/librte_timer/rte_timer.c
+++ b/lib/librte_timer/rte_timer.c
@@ -66,8 +66,8 @@ struct skiplist {
 } __rte_cache_aligned;
 
 struct priv_timer {
-	/** one pending list per enabled lcore */
-	struct skiplist pending_lists[RTE_MAX_LCORE];
+	/** one pending list per lcore, plus one for non-EAL threads */
+	struct skiplist pending_lists[RTE_MAX_LCORE + 1];
 	bool multi_pendlists;
 
 	/** per-core variable that true if a timer was updated on this
@@ -88,7 +88,7 @@ struct priv_timer {
 static struct priv_timer priv_timer[RTE_MAX_LCORE];
 
 /** cache of IDs of enabled lcores */
-static unsigned int enabled_lcores[RTE_MAX_LCORE];
+static unsigned int enabled_lcores[RTE_MAX_LCORE + 1];
 static int n_enabled_lcores;
 
 /* when debug is enabled, store some statistics */
@@ -114,12 +114,18 @@ rte_timer_subsystem_init(void)
 	RTE_LCORE_FOREACH(lcore_id)
 		enabled_lcores[n_enabled_lcores++] = lcore_id;
 
+	/* To handle timers coming from non-EAL threads */
+	enabled_lcores[n_enabled_lcores++] = RTE_MAX_LCORE;
+
 	/* since priv_timer is static, it's zeroed by default, so only init some
 	 * fields.
 	 */
 	for (i = 0; i < n_enabled_lcores; i++) {
 		lcore_id = enabled_lcores[i];
 
+		/* Don't use this value to index the priv_timer array */
+		if (lcore_id == RTE_MAX_LCORE)
+			continue;
 
 		priv_tim = &priv_timer[lcore_id];
 		priv_tim->prev_lcore = lcore_id;
@@ -343,7 +349,9 @@ timer_add(struct rte_timer *tim, unsigned int tim_lcore, int local_is_locked,
 	struct priv_timer *priv_tim = &priv_timer[tim_lcore];
 
 	if (priv_tim->multi_pendlists)
-		*pending_lists_idx = lcore_id;
+		/* Check if timer being installed from non-EAL thread */
+		*pending_lists_idx = (lcore_id == LCORE_ID_ANY) ?
+				RTE_MAX_LCORE : lcore_id;
 	else
 		*pending_lists_idx = SINGLE_LIST_IDX;
 
-- 
2.6.4

  parent reply	other threads:[~2017-09-19 17:00 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-08-23 14:47 [PATCH 0/3] *** timer library enhancements *** Gabriel Carrillo
2017-08-23 14:47 ` [PATCH 1/3] timer: add per-installer pending lists for each lcore Gabriel Carrillo
2017-08-25 20:27   ` [PATCH v2 " Gabriel Carrillo
2017-08-29 10:57     ` Ananyev, Konstantin
2017-08-29 16:13       ` Carrillo, Erik G
2017-08-29 15:11   ` [PATCH " Stephen Hemminger
2017-08-23 14:47 ` [PATCH 2/3] timer: handle timers installed from non-EAL threads Gabriel Carrillo
2017-08-25 20:27   ` [PATCH v2 " Gabriel Carrillo
2017-08-23 14:47 ` [PATCH 3/3] doc: update timer lib docs Gabriel Carrillo
2017-08-25 20:27   ` [PATCH v2 " Gabriel Carrillo
2017-08-23 15:02 ` [PATCH 0/3] *** timer library enhancements *** Wiles, Keith
2017-08-23 16:19   ` Carrillo, Erik G
2017-08-23 16:50     ` Wiles, Keith
2017-08-23 19:28       ` Carrillo, Erik G
2017-08-23 21:04         ` Wiles, Keith
2017-08-24 14:08           ` Carrillo, Erik G
2017-08-25 20:26 ` [PATCH v2 " Gabriel Carrillo
2017-09-13 22:05   ` [PATCH v3 0/3] timer library enhancement Erik Gabriel Carrillo
2017-09-13 22:05     ` [PATCH v3 1/3] timer: add multiple pending lists option for each lcore Erik Gabriel Carrillo
2017-09-13 22:05     ` [PATCH v3 2/3] timer: handle timers installed from non-EAL threads Erik Gabriel Carrillo
2017-09-13 22:05     ` [PATCH v3 3/3] doc: update timer lib docs Erik Gabriel Carrillo
2017-09-18 16:19       ` Mcnamara, John
2017-09-19 17:04         ` Carrillo, Erik G
2017-09-19 17:02     ` [PATCH v4 0/3] timer library enhancement Erik Gabriel Carrillo
2017-09-19 17:02       ` [PATCH v4 1/3] timer: add multiple pending lists option for each lcore Erik Gabriel Carrillo
2017-09-19 17:02       ` Erik Gabriel Carrillo [this message]
2017-09-19 17:02       ` [PATCH v4 3/3] doc: update timer lib docs Erik Gabriel Carrillo
2017-10-11 20:42       ` [PATCH v4 0/3] timer library enhancement Thomas Monjalon
2018-04-04 22:42         ` Thomas Monjalon
2018-04-05 21:53           ` Carrillo, Erik G

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