diff options
Diffstat (limited to 'vpp/dpdk/dpdk-16.07_patches/0006-Allow-applications-to-override-rte_delay_us.patch')
| -rw-r--r-- | vpp/dpdk/dpdk-16.07_patches/0006-Allow-applications-to-override-rte_delay_us.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/vpp/dpdk/dpdk-16.07_patches/0006-Allow-applications-to-override-rte_delay_us.patch b/vpp/dpdk/dpdk-16.07_patches/0006-Allow-applications-to-override-rte_delay_us.patch new file mode 100644 index 00000000..8a32f600 --- /dev/null +++ b/vpp/dpdk/dpdk-16.07_patches/0006-Allow-applications-to-override-rte_delay_us.patch @@ -0,0 +1,43 @@ +From 3432c140c9c51e671a4d58bb428d5852426add1f Mon Sep 17 00:00:00 2001 +From: "Todd Foggoa (tfoggoa)" <tfoggoa@cisco.com> +Date: Wed, 3 Feb 2016 08:35:27 -0800 +Subject: [PATCH 5/6] Allow applications to override rte_delay_us() + +Some applications may wish to define their own implentation of +usec delay other than the existing blocking one. The default +behavior remains unchanged. + +Signed-off-by: Todd Foggoa (tfoggoa) <tfoggoa@cisco.com> +--- + lib/librte_eal/common/eal_common_timer.c | 12 ++++++++++++ + 1 file changed, 12 insertions(+) + +diff --git a/lib/librte_eal/common/eal_common_timer.c b/lib/librte_eal/common/eal_common_timer.c +index c4227cd..cc26b91 100644 +--- a/lib/librte_eal/common/eal_common_timer.c ++++ b/lib/librte_eal/common/eal_common_timer.c +@@ -47,9 +47,21 @@ + /* The frequency of the RDTSC timer resolution */ + static uint64_t eal_tsc_resolution_hz; + ++/* Allow an override of the rte_delay_us function */ ++int rte_delay_us_override (unsigned us) __attribute__((weak)); ++ ++int ++rte_delay_us_override(__attribute__((unused)) unsigned us) ++{ ++ return 0; ++} ++ + void + rte_delay_us(unsigned us) + { ++ if (rte_delay_us_override(us)) ++ return; ++ + const uint64_t start = rte_get_timer_cycles(); + const uint64_t ticks = (uint64_t)us * rte_get_timer_hz() / 1E6; + while ((rte_get_timer_cycles() - start) < ticks) +-- +2.7.4 + |