Jim Harris a9be4f2c2f trace: add likely/unlikely hints to _spdk_trace_record ... This helps generate slightly better code in this function, which can have a noticeable impact for high trace event workloads. Tested with bdevperf, single malloc or null bdev, qd=32, 512B randreads on a single Xeon core. Specify "-e bdev" to enable bdev trace events. Null: Before: 8.09M/s (123ns per IO) After: 8.68M/s (115ns per IO) Malloc: Before: 4.21M/s (237ns per IO) After: 4.34M/s (230ns per IO) Note that each bdev I/O generates two trace events (START and END) - meaning this change removes 7-8ns of overhead for every 2 trace events, at least on my system. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: I7021b7f9e28b4a7cb16f8a97b4d4004ae165efd2 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15096 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com>		2022-10-21 07:18:37 +00:00
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Makefile	nvme/pcie, nvme/tcp: add cb_arg context tracepoint argument	2022-08-19 11:06:31 +00:00
spdk_trace.map	trace: make trace_create_tpoint_group_mask() external	2022-01-05 08:52:40 +00:00
trace_flags.c	trace: update trace help inside SPDK target	2022-09-27 19:41:17 +00:00
trace_rpc.c	Replace most BSD 3-clause license text with SPDX identifier.	2022-06-09 07:35:12 +00:00
trace.c	trace: add likely/unlikely hints to _spdk_trace_record	2022-10-21 07:18:37 +00:00