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| author | Paul E. McKenney <paulmck@kernel.org> | 2024-01-12 10:45:48 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2024-01-20 12:40:11 -0800 |
| commit | 715741db8e14fda5ded59afc7af1a2c9ea16da74 (patch) | |
| tree | eda2d4ec9040585f505b86127909d6a998f898d6 | |
| parent | 4ca36874306b39ed5bfce5a50e289f966f485334 (diff) | |
| download | perfbook-715741db8e14fda5ded59afc7af1a2c9ea16da74.tar.gz | |
CodeSamples/cpu: Add coe write times
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
| -rw-r--r-- | CodeSamples/cpu/temporal.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/CodeSamples/cpu/temporal.c b/CodeSamples/cpu/temporal.c index bcbcf022..cc544d4f 100644 --- a/CodeSamples/cpu/temporal.c +++ b/CodeSamples/cpu/temporal.c @@ -80,6 +80,7 @@ struct sample_data { int sd_started; // This thread has begun executing. void (*sd_func)(struct sample_data *); // Init function, if non-NULL. int sd_n; // Number of entries in ->sd_samples array. + struct sample coe_sample; // Start and time for initial coe write. int sd_nsamples; // Number of samples collected. struct sample *sd_samples; // Array for sample collection. }; @@ -177,6 +178,17 @@ void dump_all_threads(struct sample_data *sdp, long long *tsp) long long tsdelta4; for (cnum = 0; cnum < nthreads; cnum++) { + if (coe) { + int me = sdp[cnum].sd_me; + struct sample *sp = &sdp[cnum].coe_sample; + + tsdelta1 = sp->tbefore - *tsp; + tsdelta2 = sp->tafter - *tsp; + tsdelta3 = sp->tbeforelast - *tsp; + tsdelta4 = sp->tafterlast - *tsp; + printf("COE-write %d %lld %d %lld %lld %lld\n", cnum, + tsdelta1, me, tsdelta2, tsdelta3, tsdelta4); + } for (i = 0; i < sdp[cnum].sd_nsamples; i++) { sp = &sdp[cnum].sd_samples[i]; tsdelta1 = sp->tbefore - *tsp; @@ -192,7 +204,14 @@ void dump_all_threads(struct sample_data *sdp, long long *tsp) // The coe child threads write their ID after starting up. void coe_start(struct sample_data *sdp) { + struct sample *sp = &sdp->coe_sample; + + sp->value = -1; + sp->tbefore = get_timestamp(); + sp->tbeforelast = sp->tbefore; WRITE_ONCE(sharedvar, sdp->sd_me); + sp->tafter = get_timestamp(); + sp->tafterlast = sp->tafter; } // The coe parent lets the children do the writing. |