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| author | Yordan Karadzhov (VMware) <y.karadz@gmail.com> | 2020-12-11 17:07:46 +0200 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2020-12-21 19:11:05 -0500 |
| commit | e30b406e9f1ce99658c542970dae60e2ed8a913e (patch) | |
| tree | 39c59d6f3993a99857aa76fdb1f4d02b255d0089 | |
| parent | 75230293932c29c979ca471e564d0b27eeab9dbb (diff) | |
| download | kernel-shark-e30b406e9f1ce99658c542970dae60e2ed8a913e.tar.gz | |
kernel-shark: Add ksmodel_get_bin()
The method retrieves the Id of the bin of the model that contains
given entry.
Link: https://lore.kernel.org/linux-trace-devel/20201211150756.577366-23-y.karadz@gmail.com
Signed-off-by: Yordan Karadzhov (VMware) <y.karadz@gmail.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
| -rw-r--r-- | src/libkshark-model.c | 27 | ||||
| -rw-r--r-- | src/libkshark-model.h | 3 |
2 files changed, 30 insertions, 0 deletions
diff --git a/src/libkshark-model.c b/src/libkshark-model.c index f3864bfd..2301b069 100644 --- a/src/libkshark-model.c +++ b/src/libkshark-model.c @@ -1325,3 +1325,30 @@ ksmodel_get_task_missed_events(struct kshark_trace_histo *histo, match_pid_missed_events, sd, &pid, col, index); } + +/** + * @brief Find the bin Id of a give entry. + * + * @param histo: Input location for the model descriptor. + * @param entry: Input location for entry. + * + * @returns If the timestamp of the entry is inside the range of the model the + * function returns the Id of the bin it belongs to. + * If the timestamp of the entry is outside of the range of the model + * the function returns UPPER_OVERFLOW_BIN or LOWER_OVERFLOW_BIN + * (negative values). + */ +int ksmodel_get_bin(struct kshark_trace_histo *histo, + const struct kshark_entry *entry) +{ + if (entry->ts < histo->min) + return UPPER_OVERFLOW_BIN; + + if (entry->ts > histo->max) + return LOWER_OVERFLOW_BIN; + + if (entry->ts == histo->max) + return histo->n_bins - 1; + + return (entry->ts - histo->min) / histo->bin_size; +} diff --git a/src/libkshark-model.h b/src/libkshark-model.h index b8624809..8989ee0e 100644 --- a/src/libkshark-model.h +++ b/src/libkshark-model.h @@ -175,6 +175,9 @@ static inline double ksmodel_bin_time(struct kshark_trace_histo *histo, return ksmodel_bin_ts(histo, bin) * 1e-9; } +int ksmodel_get_bin(struct kshark_trace_histo *histo, + const struct kshark_entry *entry); + #ifdef __cplusplus } #endif // __cplusplus |