From: Stephen Hemminger <step...@networkplumber.org> The internal structure of lcore_config does not need to be part of visible API/ABI. Make it private to EAL.
Rearrange the structure so it takes less memory (and cache footprint). Signed-off-by: Stephen Hemminger <step...@networkplumber.org> Signed-off-by: David Marchand <david.march...@redhat.com> --- Based on Stephen v8: http://patchwork.dpdk.org/patch/60443/ Changes since Stephen v8: - do not change core_id, socket_id and core_index types, --- doc/guides/rel_notes/deprecation.rst | 4 ---- doc/guides/rel_notes/release_19_11.rst | 2 ++ lib/librte_eal/common/eal_common_launch.c | 2 ++ lib/librte_eal/common/eal_private.h | 25 +++++++++++++++++++++++++ lib/librte_eal/common/include/rte_lcore.h | 24 ------------------------ lib/librte_eal/common/rte_service.c | 2 ++ lib/librte_eal/rte_eal_version.map | 1 - lib/librte_eal/windows/eal/eal_thread.c | 1 + 8 files changed, 32 insertions(+), 29 deletions(-) diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst index 237813b..e4a33e0 100644 --- a/doc/guides/rel_notes/deprecation.rst +++ b/doc/guides/rel_notes/deprecation.rst @@ -23,10 +23,6 @@ Deprecation Notices * eal: The function ``rte_eal_remote_launch`` will return new error codes after read or write error on the pipe, instead of calling ``rte_panic``. -* eal: The ``lcore_config`` struct and global symbol will be made private to - remove it from the externally visible ABI and allow it to be updated in the - future. - * eal: both declaring and identifying devices will be streamlined in v18.11. New functions will appear to query a specific port from buses, classes of device and device drivers. Device declaration will be made coherent with the diff --git a/doc/guides/rel_notes/release_19_11.rst b/doc/guides/rel_notes/release_19_11.rst index 40121b9..d7e14b4 100644 --- a/doc/guides/rel_notes/release_19_11.rst +++ b/doc/guides/rel_notes/release_19_11.rst @@ -202,6 +202,8 @@ ABI Changes Also, make sure to start the actual text at the margin. ========================================================= +* eal: made the ``lcore_config`` struct and global symbol private. + Shared Library Versions ----------------------- diff --git a/lib/librte_eal/common/eal_common_launch.c b/lib/librte_eal/common/eal_common_launch.c index fe0ba3f..cf52d71 100644 --- a/lib/librte_eal/common/eal_common_launch.c +++ b/lib/librte_eal/common/eal_common_launch.c @@ -15,6 +15,8 @@ #include <rte_per_lcore.h> #include <rte_lcore.h> +#include "eal_private.h" + /* * Wait until a lcore finished its job. */ diff --git a/lib/librte_eal/common/eal_private.h b/lib/librte_eal/common/eal_private.h index 798ede5..0e4b033 100644 --- a/lib/librte_eal/common/eal_private.h +++ b/lib/librte_eal/common/eal_private.h @@ -10,6 +10,31 @@ #include <stdio.h> #include <rte_dev.h> +#include <rte_lcore.h> + +/** + * Structure storing internal configuration (per-lcore) + */ +struct lcore_config { + pthread_t thread_id; /**< pthread identifier */ + int pipe_master2slave[2]; /**< communication pipe with master */ + int pipe_slave2master[2]; /**< communication pipe with master */ + + lcore_function_t * volatile f; /**< function to call */ + void * volatile arg; /**< argument of function */ + volatile int ret; /**< return value of function */ + + volatile enum rte_lcore_state_t state; /**< lcore state */ + unsigned int socket_id; /**< physical socket id for this lcore */ + unsigned int core_id; /**< core number on socket for this lcore */ + int core_index; /**< relative index, starting from 0 */ + uint8_t core_role; /**< role of core eg: OFF, RTE, SERVICE */ + uint8_t detected; /**< true if lcore was detected */ + + rte_cpuset_t cpuset; /**< cpu set which the lcore affinity to */ +}; + +extern struct lcore_config lcore_config[RTE_MAX_LCORE]; /** * Initialize the memzone subsystem (private to eal). diff --git a/lib/librte_eal/common/include/rte_lcore.h b/lib/librte_eal/common/include/rte_lcore.h index c86f72e..0c68391 100644 --- a/lib/librte_eal/common/include/rte_lcore.h +++ b/lib/librte_eal/common/include/rte_lcore.h @@ -66,30 +66,6 @@ typedef cpuset_t rte_cpuset_t; } while (0) #endif -/** - * Structure storing internal configuration (per-lcore) - */ -struct lcore_config { - unsigned detected; /**< true if lcore was detected */ - pthread_t thread_id; /**< pthread identifier */ - int pipe_master2slave[2]; /**< communication pipe with master */ - int pipe_slave2master[2]; /**< communication pipe with master */ - lcore_function_t * volatile f; /**< function to call */ - void * volatile arg; /**< argument of function */ - volatile int ret; /**< return value of function */ - volatile enum rte_lcore_state_t state; /**< lcore state */ - unsigned socket_id; /**< physical socket id for this lcore */ - unsigned core_id; /**< core number on socket for this lcore */ - int core_index; /**< relative index, starting from 0 */ - rte_cpuset_t cpuset; /**< cpu set which the lcore affinity to */ - uint8_t core_role; /**< role of core eg: OFF, RTE, SERVICE */ -}; - -/** - * Internal configuration (per-lcore) - */ -extern struct lcore_config lcore_config[RTE_MAX_LCORE]; - RTE_DECLARE_PER_LCORE(unsigned, _lcore_id); /**< Per thread "lcore id". */ RTE_DECLARE_PER_LCORE(rte_cpuset_t, _cpuset); /**< Per thread "cpuset". */ diff --git a/lib/librte_eal/common/rte_service.c b/lib/librte_eal/common/rte_service.c index beb9691..79235c0 100644 --- a/lib/librte_eal/common/rte_service.c +++ b/lib/librte_eal/common/rte_service.c @@ -21,6 +21,8 @@ #include <rte_memory.h> #include <rte_malloc.h> +#include "eal_private.h" + #define RTE_SERVICE_NUM_MAX 64 #define SERVICE_F_REGISTERED (1 << 0) diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index 7cbf82d..aeedf39 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -4,7 +4,6 @@ DPDK_2.0 { __rte_panic; eal_parse_sysfs_value; eal_timer_source; - lcore_config; per_lcore__lcore_id; per_lcore__rte_errno; rte_calloc; diff --git a/lib/librte_eal/windows/eal/eal_thread.c b/lib/librte_eal/windows/eal/eal_thread.c index 906502f..0591d4c 100644 --- a/lib/librte_eal/windows/eal/eal_thread.c +++ b/lib/librte_eal/windows/eal/eal_thread.c @@ -12,6 +12,7 @@ #include <rte_common.h> #include <eal_thread.h> +#include "eal_private.h" RTE_DEFINE_PER_LCORE(unsigned int, _lcore_id) = LCORE_ID_ANY; -- 1.8.3.1
