[v6,1/2] eal: add API to check if its interrupt context
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Commit Message
From: Harman Kalra <hkalra@marvell.com>
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@marvell.com>
Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
---
v6:
- No changes.
v5:
- Fix shared library compilation error
v4:
- No changes.
v3:
- API Comment is updated as per man page.
- Scope updated within the library/driver only.
- Remove experimental tag
v2:
- Rebased patch on 19.11-rc4
lib/librte_eal/common/include/rte_eal_interrupts.h | 11 +++++++++++
lib/librte_eal/freebsd/eal/eal_interrupts.c | 5 +++++
lib/librte_eal/linux/eal/eal_interrupts.c | 5 +++++
lib/librte_eal/rte_eal_version.map | 1 +
4 files changed, 22 insertions(+)
Comments
On Fri, Dec 20, 2019 at 12:26 PM Sunil Kumar Kori <skori@marvell.com> wrote:
>
> From: Harman Kalra <hkalra@marvell.com>
>
> 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@marvell.com>
> Signed-off-by: Sunil Kumar Kori <skori@marvell.com>
Reviewed-by: Jerin Jacob <jerinj@marvell.com>
> ---
> v6:
> - No changes.
> v5:
> - Fix shared library compilation error
> v4:
> - No changes.
> v3:
> - API Comment is updated as per man page.
> - Scope updated within the library/driver only.
> - Remove experimental tag
> v2:
> - Rebased patch on 19.11-rc4
>
> lib/librte_eal/common/include/rte_eal_interrupts.h | 11 +++++++++++
> lib/librte_eal/freebsd/eal/eal_interrupts.c | 5 +++++
> lib/librte_eal/linux/eal/eal_interrupts.c | 5 +++++
> lib/librte_eal/rte_eal_version.map | 1 +
> 4 files changed, 22 insertions(+)
>
> diff --git a/lib/librte_eal/common/include/rte_eal_interrupts.h b/lib/librte_eal/common/include/rte_eal_interrupts.h
> index b370c0d26..19d1d45ab 100644
> --- a/lib/librte_eal/common/include/rte_eal_interrupts.h
> +++ b/lib/librte_eal/common/include/rte_eal_interrupts.h
> @@ -220,4 +220,15 @@ rte_intr_allow_others(struct rte_intr_handle *intr_handle);
> int
> rte_intr_cap_multiple(struct rte_intr_handle *intr_handle);
>
> +/**
> + * @internal
> + * Check if currently executing in interrupt context
> + *
> + * @return
> + * - non zero in case of interrupt context
> + * - zero in case of process context
> + */
> +int
> +rte_thread_is_intr(void);
> +
> #endif /* _RTE_EAL_INTERRUPTS_H_ */
> diff --git a/lib/librte_eal/freebsd/eal/eal_interrupts.c b/lib/librte_eal/freebsd/eal/eal_interrupts.c
> index f6831b790..ce2a27b4a 100644
> --- a/lib/librte_eal/freebsd/eal/eal_interrupts.c
> +++ b/lib/librte_eal/freebsd/eal/eal_interrupts.c
> @@ -671,3 +671,8 @@ rte_intr_free_epoll_fd(struct rte_intr_handle *intr_handle)
> {
> RTE_SET_USED(intr_handle);
> }
> +
> +int rte_thread_is_intr(void)
> +{
> + return pthread_equal(intr_thread, pthread_self());
> +}
> diff --git a/lib/librte_eal/linux/eal/eal_interrupts.c b/lib/librte_eal/linux/eal/eal_interrupts.c
> index 14ebb108c..cb8e10709 100644
> --- a/lib/librte_eal/linux/eal/eal_interrupts.c
> +++ b/lib/librte_eal/linux/eal/eal_interrupts.c
> @@ -1488,3 +1488,8 @@ rte_intr_cap_multiple(struct rte_intr_handle *intr_handle)
>
> return 0;
> }
> +
> +int rte_thread_is_intr(void)
> +{
> + return pthread_equal(intr_thread, pthread_self());
> +}
> diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map
> index e38d02530..06ed2e9dc 100644
> --- a/lib/librte_eal/rte_eal_version.map
> +++ b/lib/librte_eal/rte_eal_version.map
> @@ -91,6 +91,7 @@ DPDK_20.0 {
> rte_intr_free_epoll_fd;
> rte_intr_rx_ctl;
> rte_intr_tls_epfd;
> + rte_thread_is_intr;
> rte_keepalive_create;
> rte_keepalive_dispatch_pings;
> rte_keepalive_mark_alive;
> --
> 2.17.1
>
@@ -220,4 +220,15 @@ rte_intr_allow_others(struct rte_intr_handle *intr_handle);
int
rte_intr_cap_multiple(struct rte_intr_handle *intr_handle);
+/**
+ * @internal
+ * Check if currently executing in interrupt context
+ *
+ * @return
+ * - non zero in case of interrupt context
+ * - zero in case of process context
+ */
+int
+rte_thread_is_intr(void);
+
#endif /* _RTE_EAL_INTERRUPTS_H_ */
@@ -671,3 +671,8 @@ rte_intr_free_epoll_fd(struct rte_intr_handle *intr_handle)
{
RTE_SET_USED(intr_handle);
}
+
+int rte_thread_is_intr(void)
+{
+ return pthread_equal(intr_thread, pthread_self());
+}
@@ -1488,3 +1488,8 @@ rte_intr_cap_multiple(struct rte_intr_handle *intr_handle)
return 0;
}
+
+int rte_thread_is_intr(void)
+{
+ return pthread_equal(intr_thread, pthread_self());
+}
@@ -91,6 +91,7 @@ DPDK_20.0 {
rte_intr_free_epoll_fd;
rte_intr_rx_ctl;
rte_intr_tls_epfd;
+ rte_thread_is_intr;
rte_keepalive_create;
rte_keepalive_dispatch_pings;
rte_keepalive_mark_alive;