[dpdk-dev] [PATCH] eal: check for interrupt context
Harman Kalra
hkalra at marvell.com
Sun Nov 17 20:36:11 CET 2019
Added an API to check if current execution is in interrupt
context. This will be helpful to handle nested interrupt cases.
Signed-off-by: Harman Kalra <hkalra at marvell.com>
---
lib/librte_eal/common/include/rte_interrupts.h | 13 +++++++++++++
lib/librte_eal/freebsd/eal/eal_interrupts.c | 8 ++++++++
lib/librte_eal/linux/eal/eal_interrupts.c | 8 ++++++++
lib/librte_eal/rte_eal_version.map | 1 +
4 files changed, 30 insertions(+)
diff --git a/lib/librte_eal/common/include/rte_interrupts.h b/lib/librte_eal/common/include/rte_interrupts.h
index e3b406abc..1e64f5329 100644
--- a/lib/librte_eal/common/include/rte_interrupts.h
+++ b/lib/librte_eal/common/include/rte_interrupts.h
@@ -138,6 +138,19 @@ int rte_intr_disable(const struct rte_intr_handle *intr_handle);
__rte_experimental
int rte_intr_ack(const struct rte_intr_handle *intr_handle);
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ *
+ * Check if currently executing in interrupt context
+ *
+ * @return
+ * On success, returns 1, else 0
+ */
+__rte_experimental
+int
+rte_thread_is_intr(void);
+
#ifdef __cplusplus
}
#endif
diff --git a/lib/librte_eal/freebsd/eal/eal_interrupts.c b/lib/librte_eal/freebsd/eal/eal_interrupts.c
index f6831b790..c60fd782a 100644
--- a/lib/librte_eal/freebsd/eal/eal_interrupts.c
+++ b/lib/librte_eal/freebsd/eal/eal_interrupts.c
@@ -671,3 +671,11 @@ rte_intr_free_epoll_fd(struct rte_intr_handle *intr_handle)
{
RTE_SET_USED(intr_handle);
}
+
+int rte_thread_is_intr(void)
+{
+ if (pthread_equal(intr_thread, pthread_self()))
+ return true;
+ else
+ return false;
+}
diff --git a/lib/librte_eal/linux/eal/eal_interrupts.c b/lib/librte_eal/linux/eal/eal_interrupts.c
index 1955324d3..516cbbfa8 100644
--- a/lib/librte_eal/linux/eal/eal_interrupts.c
+++ b/lib/librte_eal/linux/eal/eal_interrupts.c
@@ -1487,3 +1487,11 @@ rte_intr_cap_multiple(struct rte_intr_handle *intr_handle)
return 0;
}
+
+int rte_thread_is_intr(void)
+{
+ if (pthread_equal(intr_thread, pthread_self()))
+ return true;
+ else
+ return false;
+}
diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
index f1982f2f7..ab5dd5b47 100644
--- a/lib/librte_eal/rte_eal_version.map
+++ b/lib/librte_eal/rte_eal_version.map
@@ -427,4 +427,5 @@ EXPERIMENTAL {
# added in 19.11
rte_log_get_stream;
+ rte_thread_is_intr;
};
--
2.18.0
More information about the dev
mailing list