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lib/trace_parser: method for retrieving tsc offset

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Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com>
Change-Id: I11fc341b4353c01cd933d6692cf97de3a3744a84
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/9432
Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com>
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
This commit is contained in:
Konrad Sztyber 2021-08-31 13:59:27 +02:00 committed by Tomasz Zawadzki
parent 4ba770720a
commit 6727cc382b
3 changed files with 18 additions and 0 deletions
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10
include/spdk/trace_parser.h
View File

@ -92,6 +92,16 @@ void spdk_trace_parser_cleanup(struct spdk_trace_parser *parser);
*/
const struct spdk_trace_flags *spdk_trace_parser_get_flags(const struct spdk_trace_parser *parser);
/**
* Return the highest tsc out of first entries across all speicifed cores. This value can be used
* to select entries from the subset of time we have the data from all reactors.
*
* \param parser Parser object to be used.
*
* \return Offset in tsc.
*/
uint64_t spdk_trace_parser_get_tsc_offset(const struct spdk_trace_parser *parser);
#ifdef __cplusplus
}
#endif

1
lib/trace_parser/spdk_trace_parser.map
View File

@ -5,6 +5,7 @@
spdk_trace_parser_init;
spdk_trace_parser_cleanup;
spdk_trace_parser_get_flags;
spdk_trace_parser_get_tsc_offset;
local: *;
};

7
lib/trace_parser/trace.cpp
View File

@ -67,6 +67,7 @@ struct spdk_trace_parser {
spdk_trace_parser(const spdk_trace_parser &) = delete;
spdk_trace_parser &operator=(const spdk_trace_parser &) = delete;
const spdk_trace_flags *flags() const { return &_histories->flags; }
uint64_t tsc_offset() const { return _tsc_offset; }
private:
void populate_events(spdk_trace_history *history, int num_entries);
bool init(const spdk_trace_parser_opts *opts);
@ -264,3 +265,9 @@ spdk_trace_parser_get_flags(const struct spdk_trace_parser *parser)
{
return parser->flags();
}
uint64_t
spdk_trace_parser_get_tsc_offset(const struct spdk_trace_parser *parser)
{
return parser->tsc_offset();
}