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authorjaszha03 <jason.zhang2@arm.com>2019-07-11 20:47:24 +0000
committerDave Barach <openvpp@barachs.net>2019-07-31 13:53:55 +0000
commit5cdde5c25a0e71d923a6d56e5c94e058887f95d8 (patch)
treec54eeb5a91ce67417806fabd1fca8d287993e71d /src/plugins/ioam/analyse/ioam_analyse.h
parent9a4e631890a70978d414b4937cb94b50cfd778e6 (diff)
vppinfra: refactor test_and_set spinlocks to use clib_spinlock_t
Spinlock performance improved when implemented with compare_and_exchange instead of test_and_set. All instances of test_and_set locks were refactored to use clib_spinlock_t when possible. Some locks e.g. ssvm synchronize between processes rather than threads, so they cannot directly use clib_spinlock_t. Type: refactor Change-Id: Ia16b5d4cd49209b2b57b8df6c94615c28b11bb60 Signed-off-by: Jason Zhang <jason.zhang2@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com> Reviewed-by: Lijian Zhang <Lijian.Zhang@arm.com>
Diffstat (limited to 'src/plugins/ioam/analyse/ioam_analyse.h')
-rw-r--r--src/plugins/ioam/analyse/ioam_analyse.h28
1 files changed, 11 insertions, 17 deletions
diff --git a/src/plugins/ioam/analyse/ioam_analyse.h b/src/plugins/ioam/analyse/ioam_analyse.h
index 3aec7a792d8..2a2cc15823f 100644
--- a/src/plugins/ioam/analyse/ioam_analyse.h
+++ b/src/plugins/ioam/analyse/ioam_analyse.h
@@ -22,6 +22,7 @@
#include <ioam/lib-e2e/e2e_util.h>
#include <ioam/lib-trace/trace_util.h>
#include <ioam/lib-trace/trace_config.h>
+#include <vppinfra/lock.h>
#define IOAM_FLOW_TEMPLATE_ID 260
#define IOAM_TRACE_MAX_NODES 10
@@ -123,7 +124,7 @@ typedef struct ioam_analyser_data_t_
struct ioam_analyser_data_t_ *chached_data_list;
/** Lock to since we use this to export the data in other thread. */
- volatile u32 *writer_lock;
+ clib_spinlock_t writer_lock;
} ioam_analyser_data_t;
always_inline f64
@@ -191,8 +192,7 @@ ip6_ioam_analyse_set_paths_down (ioam_analyser_data_t * data)
ioam_path_map_t *path;
u8 k, i;
- while (clib_atomic_test_and_set (data->writer_lock))
- ;
+ clib_spinlock_lock (&data->writer_lock);
trace_data = &data->trace_data;
@@ -208,7 +208,7 @@ ip6_ioam_analyse_set_paths_down (ioam_analyser_data_t * data)
for (k = 0; k < trace_record->num_nodes; k++)
path[k].state_up = 0;
}
- clib_atomic_release (data->writer_lock);
+ clib_spinlock_unlock (&data->writer_lock);
}
always_inline void
@@ -225,8 +225,7 @@ ip6_ioam_analyse_hbh_trace_loopback (ioam_analyser_data_t * data,
u16 size_of_traceopt_per_node;
u16 size_of_all_traceopts;
- while (clib_atomic_test_and_set (data->writer_lock))
- ;
+ clib_spinlock_lock (&data->writer_lock);
trace_data = &data->trace_data;
@@ -277,7 +276,7 @@ ip6_ioam_analyse_hbh_trace_loopback (ioam_analyser_data_t * data,
}
}
end:
- clib_atomic_release (data->writer_lock);
+ clib_spinlock_unlock (&data->writer_lock);
}
always_inline int
@@ -295,8 +294,7 @@ ip6_ioam_analyse_hbh_trace (ioam_analyser_data_t * data,
ioam_path_map_t *path = NULL;
ioam_analyse_trace_record *trace_record;
- while (clib_atomic_test_and_set (data->writer_lock))
- ;
+ clib_spinlock_lock (&data->writer_lock);
trace_data = &data->trace_data;
@@ -409,7 +407,7 @@ found_match:
(u32) ((sum + delay) / (data->seqno_data.rx_packets + 1));
}
DONE:
- clib_atomic_release (data->writer_lock);
+ clib_spinlock_unlock (&data->writer_lock);
return 0;
}
@@ -417,13 +415,12 @@ always_inline int
ip6_ioam_analyse_hbh_e2e (ioam_analyser_data_t * data,
ioam_e2e_packet_t * e2e, u16 len)
{
- while (clib_atomic_test_and_set (data->writer_lock))
- ;
+ clib_spinlock_lock (&data->writer_lock);
ioam_analyze_seqno (&data->seqno_data,
(u64) clib_net_to_host_u32 (e2e->e2e_data));
- clib_atomic_release (data->writer_lock);
+ clib_spinlock_unlock (&data->writer_lock);
return 0;
}
@@ -509,10 +506,7 @@ ioam_analyse_init_data (ioam_analyser_data_t * data)
* get extended in future to maintain history of data */
vec_validate_aligned (data->chached_data_list, 0, CLIB_CACHE_LINE_BYTES);
- data->writer_lock = clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES,
- CLIB_CACHE_LINE_BYTES);
-
- clib_atomic_release (data->writer_lock);
+ clib_spinlock_init (&data->writer_lock);
trace_data = &(data->trace_data);
for (j = 0; j < IOAM_MAX_PATHS_PER_FLOW; j++)