From 9058afaa26f7f39c179fbfeb3c6ce5929890f322 Mon Sep 17 00:00:00 2001 From: Harman Kalra Date: Tue, 14 Jan 2020 14:34:52 +0530 Subject: [PATCH] eal: check if running in interrupt context 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 Signed-off-by: Sunil Kumar Kori Reviewed-by: Jerin Jacob --- .../common/include/rte_eal_interrupts.h | 15 +++++++++++++++ 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 | 3 +++ 4 files changed, 28 insertions(+) diff --git a/lib/librte_eal/common/include/rte_eal_interrupts.h b/lib/librte_eal/common/include/rte_eal_interrupts.h index b370c0d264..773a34a42b 100644 --- a/lib/librte_eal/common/include/rte_eal_interrupts.h +++ b/lib/librte_eal/common/include/rte_eal_interrupts.h @@ -220,4 +220,19 @@ rte_intr_allow_others(struct rte_intr_handle *intr_handle); int rte_intr_cap_multiple(struct rte_intr_handle *intr_handle); +/** + * @warning + * @b EXPERIMENTAL: this API may change without prior notice + * + * @internal + * Check if currently executing in interrupt context + * + * @return + * - non zero in case of interrupt context + * - zero in case of process context + */ +__rte_experimental +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 f6831b7902..ce2a27b4a5 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 14ebb108ce..cb8e107098 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 e38d02530c..6cf5070680 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -332,4 +332,7 @@ EXPERIMENTAL { # added in 19.11 rte_log_get_stream; rte_mcfg_get_single_file_segments; + + # added in 20.02 + rte_thread_is_intr; }; -- 2.20.1