Em Tue, Feb 02, 2021 at 12:09:08PM -0800, [email protected] escreveu: > From: Kan Liang <[email protected]>
Hey Joe, heads up on these new fields. The whole thread is at: https://lore.kernel.org/lkml/[email protected]/ The kernel cset introducing the support: "perf/x86/intel: Add perf core PMU support for Sapphire Rapids" https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/commit/?h=perf/core&id=61b985e3e775a3a75fda04ce7ef1b1aefc4758bc Cheers, - Arnaldo > perf c2c is also a memory profiling tool. Apply the two new data source > fields to perf c2c as well. > > Extend perf c2c to display the number of loads which blocked by data or > address conflict. > > Signed-off-by: Kan Liang <[email protected]> > --- > tools/perf/builtin-c2c.c | 3 +++ > tools/perf/util/mem-events.c | 6 ++++++ > tools/perf/util/mem-events.h | 2 ++ > 3 files changed, 11 insertions(+) > > diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c > index c5babea..4de49ae 100644 > --- a/tools/perf/builtin-c2c.c > +++ b/tools/perf/builtin-c2c.c > @@ -2111,6 +2111,8 @@ static void print_c2c__display_stats(FILE *out) > fprintf(out, " Load MESI State Exclusive : %10d\n", > stats->ld_excl); > fprintf(out, " Load MESI State Shared : %10d\n", > stats->ld_shared); > fprintf(out, " Load LLC Misses : %10d\n", > llc_misses); > + fprintf(out, " Load access blocked by data : %10d\n", > stats->blk_data); > + fprintf(out, " Load access blocked by address : %10d\n", > stats->blk_addr); > fprintf(out, " LLC Misses to Local DRAM : %10.1f%%\n", > ((double)stats->lcl_dram/(double)llc_misses) * 100.); > fprintf(out, " LLC Misses to Remote DRAM : %10.1f%%\n", > ((double)stats->rmt_dram/(double)llc_misses) * 100.); > fprintf(out, " LLC Misses to Remote cache (HIT) : %10.1f%%\n", > ((double)stats->rmt_hit /(double)llc_misses) * 100.); > @@ -2139,6 +2141,7 @@ static void print_shared_cacheline_info(FILE *out) > fprintf(out, " L2D hits on shared lines : %10d\n", > stats->ld_l2hit); > fprintf(out, " LLC hits on shared lines : %10d\n", > stats->ld_llchit + stats->lcl_hitm); > fprintf(out, " Locked Access on shared lines : %10d\n", > stats->locks); > + fprintf(out, " Blocked Access on shared lines : %10d\n", > stats->blk_data + stats->blk_addr); > fprintf(out, " Store HITs on shared lines : %10d\n", > stats->store); > fprintf(out, " Store L1D hits on shared lines : %10d\n", > stats->st_l1hit); > fprintf(out, " Total Merged records : %10d\n", hitm_cnt + > stats->store); > diff --git a/tools/perf/util/mem-events.c b/tools/perf/util/mem-events.c > index 890f638..f93a852 100644 > --- a/tools/perf/util/mem-events.c > +++ b/tools/perf/util/mem-events.c > @@ -385,6 +385,7 @@ int c2c_decode_stats(struct c2c_stats *stats, struct > mem_info *mi) > u64 lvl = data_src->mem_lvl; > u64 snoop = data_src->mem_snoop; > u64 lock = data_src->mem_lock; > + u64 blk = data_src->mem_blk; > /* > * Skylake might report unknown remote level via this > * bit, consider it when evaluating remote HITMs. > @@ -404,6 +405,9 @@ do { \ > > if (lock & P(LOCK, LOCKED)) stats->locks++; > > + if (blk & P(BLK, DATA)) stats->blk_data++; > + if (blk & P(BLK, ADDR)) stats->blk_addr++; > + > if (op & P(OP, LOAD)) { > /* load */ > stats->load++; > @@ -515,6 +519,8 @@ void c2c_add_stats(struct c2c_stats *stats, struct > c2c_stats *add) > stats->rmt_hit += add->rmt_hit; > stats->lcl_dram += add->lcl_dram; > stats->rmt_dram += add->rmt_dram; > + stats->blk_data += add->blk_data; > + stats->blk_addr += add->blk_addr; > stats->nomap += add->nomap; > stats->noparse += add->noparse; > } > diff --git a/tools/perf/util/mem-events.h b/tools/perf/util/mem-events.h > index 5ddf447..755cef7 100644 > --- a/tools/perf/util/mem-events.h > +++ b/tools/perf/util/mem-events.h > @@ -79,6 +79,8 @@ struct c2c_stats { > u32 rmt_hit; /* count of loads with remote hit clean; */ > u32 lcl_dram; /* count of loads miss to local DRAM */ > u32 rmt_dram; /* count of loads miss to remote DRAM */ > + u32 blk_data; /* count of loads blocked by data */ > + u32 blk_addr; /* count of loads blocked by address > conflict */ > u32 nomap; /* count of load/stores with no phys adrs > */ > u32 noparse; /* count of unparsable data sources */ > }; > -- > 2.7.4 > -- - Arnaldo
