diff mbox series

[v4,14/35] perf evlist: Remove __evlist__add_default

Message ID 20230526215410.2435674-15-irogers@google.com (mailing list archive)
State New, archived
Headers show
Series PMU refactoring and improvements | expand

Commit Message

Ian Rogers May 26, 2023, 9:53 p.m. UTC
__evlist__add_default adds a cycles event to a typically empty evlist
and was extended for hybrid with evlist__add_default_hybrid, as more
than 1 PMU was necessary. Rather than have dedicated logic for the
cycles event, this change switches to parsing 'cycles:P' which will
handle wildcarding the PMUs appropriately for hybrid.

Signed-off-by: Ian Rogers <irogers@google.com>
Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
---
 tools/perf/arch/x86/util/evsel.c | 20 --------------
 tools/perf/builtin-record.c      | 13 +++------
 tools/perf/builtin-top.c         | 10 ++++---
 tools/perf/util/evlist-hybrid.c  | 25 -----------------
 tools/perf/util/evlist-hybrid.h  |  1 -
 tools/perf/util/evlist.c         | 22 ++++++---------
 tools/perf/util/evlist.h         |  7 -----
 tools/perf/util/evsel.c          | 46 --------------------------------
 tools/perf/util/evsel.h          |  3 ---
 9 files changed, 17 insertions(+), 130 deletions(-)

Comments

Arnaldo Carvalho de Melo May 27, 2023, 1:45 a.m. UTC | #1
Em Fri, May 26, 2023 at 02:53:49PM -0700, Ian Rogers escreveu:
> __evlist__add_default adds a cycles event to a typically empty evlist
> and was extended for hybrid with evlist__add_default_hybrid, as more
> than 1 PMU was necessary. Rather than have dedicated logic for the
> cycles event, this change switches to parsing 'cycles:P' which will
> handle wildcarding the PMUs appropriately for hybrid.

I think I reported this earlier, but at this point 'perf test python'
breaks, I fixed it in the tmp.perf-tools-next:

 19: 'import perf' in python                                         : FAILED!
⬢[acme@toolbox perf-tools-next]$ git log --oneline -1
fe4f622c4fc7a02a (HEAD) perf evlist: Remove __evlist__add_default
⬢[acme@toolbox perf-tools-next]$
⬢[acme@toolbox perf-tools-next]$ perf test -v python
Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc
 19: 'import perf' in python                                         :
--- start ---
test child forked, pid 2976621
python usage test: "echo "import sys ; sys.path.append('/tmp/build/perf-tools-next/python'); import perf" | '/usr/bin/python3' "
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: /tmp/build/perf-tools-next/python/perf.cpython-310-x86_64-linux-gnu.so: undefined symbol: parse_event
test child finished with -1
---- end ----
'import perf' in python: FAILED!
⬢[acme@toolbox perf-tools-next]$

Probably there will be a few more cases in the next patches, please
check.

- Arnaldo
 
> Signed-off-by: Ian Rogers <irogers@google.com>
> Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
> ---
>  tools/perf/arch/x86/util/evsel.c | 20 --------------
>  tools/perf/builtin-record.c      | 13 +++------
>  tools/perf/builtin-top.c         | 10 ++++---
>  tools/perf/util/evlist-hybrid.c  | 25 -----------------
>  tools/perf/util/evlist-hybrid.h  |  1 -
>  tools/perf/util/evlist.c         | 22 ++++++---------
>  tools/perf/util/evlist.h         |  7 -----
>  tools/perf/util/evsel.c          | 46 --------------------------------
>  tools/perf/util/evsel.h          |  3 ---
>  9 files changed, 17 insertions(+), 130 deletions(-)
> 
> diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c
> index ea3972d785d1..153cdca94cd4 100644
> --- a/tools/perf/arch/x86/util/evsel.c
> +++ b/tools/perf/arch/x86/util/evsel.c
> @@ -16,26 +16,6 @@ void arch_evsel__set_sample_weight(struct evsel *evsel)
>  	evsel__set_sample_bit(evsel, WEIGHT_STRUCT);
>  }
>  
> -void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr)
> -{
> -	struct perf_env env = { .total_mem = 0, } ;
> -
> -	if (!perf_env__cpuid(&env))
> -		return;
> -
> -	/*
> -	 * On AMD, precise cycles event sampling internally uses IBS pmu.
> -	 * But IBS does not have filtering capabilities and perf by default
> -	 * sets exclude_guest = 1. This makes IBS pmu event init fail and
> -	 * thus perf ends up doing non-precise sampling. Avoid it by clearing
> -	 * exclude_guest.
> -	 */
> -	if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD"))
> -		attr->exclude_guest = 0;
> -
> -	free(env.cpuid);
> -}
> -
>  /* Check whether the evsel's PMU supports the perf metrics */
>  bool evsel__sys_has_perf_metrics(const struct evsel *evsel)
>  {
> diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> index 88f7b4241153..d80b54a6f450 100644
> --- a/tools/perf/builtin-record.c
> +++ b/tools/perf/builtin-record.c
> @@ -4161,18 +4161,11 @@ int cmd_record(int argc, const char **argv)
>  		record.opts.tail_synthesize = true;
>  
>  	if (rec->evlist->core.nr_entries == 0) {
> -		if (perf_pmu__has_hybrid()) {
> -			err = evlist__add_default_hybrid(rec->evlist,
> -							 !record.opts.no_samples);
> -		} else {
> -			err = __evlist__add_default(rec->evlist,
> -						    !record.opts.no_samples);
> -		}
> +		bool can_profile_kernel = perf_event_paranoid_check(1);
>  
> -		if (err < 0) {
> -			pr_err("Not enough memory for event selector list\n");
> +		err = parse_event(rec->evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> +		if (err)
>  			goto out;
> -		}
>  	}
>  
>  	if (rec->opts.target.tid && !rec->opts.no_inherit_set)
> diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> index 48ee49e95c5e..27a7f068207d 100644
> --- a/tools/perf/builtin-top.c
> +++ b/tools/perf/builtin-top.c
> @@ -1653,10 +1653,12 @@ int cmd_top(int argc, const char **argv)
>  	if (annotate_check_args(&top.annotation_opts) < 0)
>  		goto out_delete_evlist;
>  
> -	if (!top.evlist->core.nr_entries &&
> -	    evlist__add_default(top.evlist) < 0) {
> -		pr_err("Not enough memory for event selector list\n");
> -		goto out_delete_evlist;
> +	if (!top.evlist->core.nr_entries) {
> +		bool can_profile_kernel = perf_event_paranoid_check(1);
> +		int err = parse_event(top.evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> +
> +		if (err)
> +			goto out_delete_evlist;
>  	}
>  
>  	status = evswitch__init(&top.evswitch, top.evlist, stderr);
> diff --git a/tools/perf/util/evlist-hybrid.c b/tools/perf/util/evlist-hybrid.c
> index 0f59c80f27b2..64f78d06fe19 100644
> --- a/tools/perf/util/evlist-hybrid.c
> +++ b/tools/perf/util/evlist-hybrid.c
> @@ -16,31 +16,6 @@
>  #include <perf/evsel.h>
>  #include <perf/cpumap.h>
>  
> -int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
> -{
> -	struct evsel *evsel;
> -	struct perf_pmu *pmu;
> -	__u64 config;
> -	struct perf_cpu_map *cpus;
> -
> -	perf_pmu__for_each_hybrid_pmu(pmu) {
> -		config = PERF_COUNT_HW_CPU_CYCLES |
> -			 ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT);
> -		evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
> -					  config);
> -		if (!evsel)
> -			return -ENOMEM;
> -
> -		cpus = perf_cpu_map__get(pmu->cpus);
> -		evsel->core.cpus = cpus;
> -		evsel->core.own_cpus = perf_cpu_map__get(cpus);
> -		evsel->pmu_name = strdup(pmu->name);
> -		evlist__add(evlist, evsel);
> -	}
> -
> -	return 0;
> -}
> -
>  bool evlist__has_hybrid(struct evlist *evlist)
>  {
>  	struct evsel *evsel;
> diff --git a/tools/perf/util/evlist-hybrid.h b/tools/perf/util/evlist-hybrid.h
> index 4b000eda6626..0cded76eb344 100644
> --- a/tools/perf/util/evlist-hybrid.h
> +++ b/tools/perf/util/evlist-hybrid.h
> @@ -7,7 +7,6 @@
>  #include "evlist.h"
>  #include <unistd.h>
>  
> -int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
>  bool evlist__has_hybrid(struct evlist *evlist);
>  
>  #endif /* __PERF_EVLIST_HYBRID_H */
> diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> index 9dfa977193b3..63f8821a5395 100644
> --- a/tools/perf/util/evlist.c
> +++ b/tools/perf/util/evlist.c
> @@ -93,8 +93,15 @@ struct evlist *evlist__new(void)
>  struct evlist *evlist__new_default(void)
>  {
>  	struct evlist *evlist = evlist__new();
> +	bool can_profile_kernel;
> +	int err;
> +
> +	if (!evlist)
> +		return NULL;
>  
> -	if (evlist && evlist__add_default(evlist)) {
> +	can_profile_kernel = perf_event_paranoid_check(1);
> +	err = parse_event(evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> +	if (err) {
>  		evlist__delete(evlist);
>  		evlist = NULL;
>  	}
> @@ -237,19 +244,6 @@ static void evlist__set_leader(struct evlist *evlist)
>  	perf_evlist__set_leader(&evlist->core);
>  }
>  
> -int __evlist__add_default(struct evlist *evlist, bool precise)
> -{
> -	struct evsel *evsel;
> -
> -	evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
> -				  PERF_COUNT_HW_CPU_CYCLES);
> -	if (evsel == NULL)
> -		return -ENOMEM;
> -
> -	evlist__add(evlist, evsel);
> -	return 0;
> -}
> -
>  static struct evsel *evlist__dummy_event(struct evlist *evlist)
>  {
>  	struct perf_event_attr attr = {
> diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
> index 5e7ff44f3043..664c6bf7b3e0 100644
> --- a/tools/perf/util/evlist.h
> +++ b/tools/perf/util/evlist.h
> @@ -100,13 +100,6 @@ void evlist__delete(struct evlist *evlist);
>  void evlist__add(struct evlist *evlist, struct evsel *entry);
>  void evlist__remove(struct evlist *evlist, struct evsel *evsel);
>  
> -int __evlist__add_default(struct evlist *evlist, bool precise);
> -
> -static inline int evlist__add_default(struct evlist *evlist)
> -{
> -	return __evlist__add_default(evlist, true);
> -}
> -
>  int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs);
>  
>  int __evlist__add_default_attrs(struct evlist *evlist,
> diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> index 8c8f371ea2b5..1df8f967d2eb 100644
> --- a/tools/perf/util/evsel.c
> +++ b/tools/perf/util/evsel.c
> @@ -316,48 +316,6 @@ struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx)
>  	return evsel;
>  }
>  
> -static bool perf_event_can_profile_kernel(void)
> -{
> -	return perf_event_paranoid_check(1);
> -}
> -
> -struct evsel *evsel__new_cycles(bool precise __maybe_unused, __u32 type, __u64 config)
> -{
> -	struct perf_event_attr attr = {
> -		.type	= type,
> -		.config	= config,
> -		.exclude_kernel	= !perf_event_can_profile_kernel(),
> -	};
> -	struct evsel *evsel;
> -
> -	event_attr_init(&attr);
> -
> -	/*
> -	 * Now let the usual logic to set up the perf_event_attr defaults
> -	 * to kick in when we return and before perf_evsel__open() is called.
> -	 */
> -	evsel = evsel__new(&attr);
> -	if (evsel == NULL)
> -		goto out;
> -
> -	arch_evsel__fixup_new_cycles(&evsel->core.attr);
> -
> -	evsel->precise_max = true;
> -
> -	/* use asprintf() because free(evsel) assumes name is allocated */
> -	if (asprintf(&evsel->name, "cycles%s%s%.*s",
> -		     (attr.precise_ip || attr.exclude_kernel) ? ":" : "",
> -		     attr.exclude_kernel ? "u" : "",
> -		     attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0)
> -		goto error_free;
> -out:
> -	return evsel;
> -error_free:
> -	evsel__delete(evsel);
> -	evsel = NULL;
> -	goto out;
> -}
> -
>  int copy_config_terms(struct list_head *dst, struct list_head *src)
>  {
>  	struct evsel_config_term *pos, *tmp;
> @@ -1131,10 +1089,6 @@ void __weak arch_evsel__set_sample_weight(struct evsel *evsel)
>  	evsel__set_sample_bit(evsel, WEIGHT);
>  }
>  
> -void __weak arch_evsel__fixup_new_cycles(struct perf_event_attr *attr __maybe_unused)
> -{
> -}
> -
>  void __weak arch__post_evsel_config(struct evsel *evsel __maybe_unused,
>  				    struct perf_event_attr *attr __maybe_unused)
>  {
> diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> index df8928745fc6..429b172cc94d 100644
> --- a/tools/perf/util/evsel.h
> +++ b/tools/perf/util/evsel.h
> @@ -243,8 +243,6 @@ static inline struct evsel *evsel__newtp(const char *sys, const char *name)
>  }
>  #endif
>  
> -struct evsel *evsel__new_cycles(bool precise, __u32 type, __u64 config);
> -
>  #ifdef HAVE_LIBTRACEEVENT
>  struct tep_event *event_format__new(const char *sys, const char *name);
>  #endif
> @@ -312,7 +310,6 @@ void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_forma
>  void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);
>  
>  void arch_evsel__set_sample_weight(struct evsel *evsel);
> -void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr);
>  void arch__post_evsel_config(struct evsel *evsel, struct perf_event_attr *attr);
>  
>  int evsel__set_filter(struct evsel *evsel, const char *filter);
> -- 
> 2.41.0.rc0.172.g3f132b7071-goog
>
Ian Rogers May 27, 2023, 5:58 a.m. UTC | #2
On Fri, May 26, 2023 at 6:45 PM Arnaldo Carvalho de Melo
<acme@kernel.org> wrote:
>
> Em Fri, May 26, 2023 at 02:53:49PM -0700, Ian Rogers escreveu:
> > __evlist__add_default adds a cycles event to a typically empty evlist
> > and was extended for hybrid with evlist__add_default_hybrid, as more
> > than 1 PMU was necessary. Rather than have dedicated logic for the
> > cycles event, this change switches to parsing 'cycles:P' which will
> > handle wildcarding the PMUs appropriately for hybrid.
>
> I think I reported this earlier, but at this point 'perf test python'
> breaks, I fixed it in the tmp.perf-tools-next:
>
>  19: 'import perf' in python                                         : FAILED!
> ⬢[acme@toolbox perf-tools-next]$ git log --oneline -1
> fe4f622c4fc7a02a (HEAD) perf evlist: Remove __evlist__add_default
> ⬢[acme@toolbox perf-tools-next]$
> ⬢[acme@toolbox perf-tools-next]$ perf test -v python
> Couldn't bump rlimit(MEMLOCK), failures may take place when creating BPF maps, etc
>  19: 'import perf' in python                                         :
> --- start ---
> test child forked, pid 2976621
> python usage test: "echo "import sys ; sys.path.append('/tmp/build/perf-tools-next/python'); import perf" | '/usr/bin/python3' "
> Traceback (most recent call last):
>   File "<stdin>", line 1, in <module>
> ImportError: /tmp/build/perf-tools-next/python/perf.cpython-310-x86_64-linux-gnu.so: undefined symbol: parse_event
> test child finished with -1
> ---- end ----
> 'import perf' in python: FAILED!
> ⬢[acme@toolbox perf-tools-next]$
>
> Probably there will be a few more cases in the next patches, please
> check.

I'll rebase and resend. I needed to add:
https://lore.kernel.org/lkml/20230527055517.2711487-1-irogers@google.com/
to repro the failure. The test was passing without it.

Thanks,
Ian

> - Arnaldo
>
> > Signed-off-by: Ian Rogers <irogers@google.com>
> > Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
> > ---
> >  tools/perf/arch/x86/util/evsel.c | 20 --------------
> >  tools/perf/builtin-record.c      | 13 +++------
> >  tools/perf/builtin-top.c         | 10 ++++---
> >  tools/perf/util/evlist-hybrid.c  | 25 -----------------
> >  tools/perf/util/evlist-hybrid.h  |  1 -
> >  tools/perf/util/evlist.c         | 22 ++++++---------
> >  tools/perf/util/evlist.h         |  7 -----
> >  tools/perf/util/evsel.c          | 46 --------------------------------
> >  tools/perf/util/evsel.h          |  3 ---
> >  9 files changed, 17 insertions(+), 130 deletions(-)
> >
> > diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c
> > index ea3972d785d1..153cdca94cd4 100644
> > --- a/tools/perf/arch/x86/util/evsel.c
> > +++ b/tools/perf/arch/x86/util/evsel.c
> > @@ -16,26 +16,6 @@ void arch_evsel__set_sample_weight(struct evsel *evsel)
> >       evsel__set_sample_bit(evsel, WEIGHT_STRUCT);
> >  }
> >
> > -void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr)
> > -{
> > -     struct perf_env env = { .total_mem = 0, } ;
> > -
> > -     if (!perf_env__cpuid(&env))
> > -             return;
> > -
> > -     /*
> > -      * On AMD, precise cycles event sampling internally uses IBS pmu.
> > -      * But IBS does not have filtering capabilities and perf by default
> > -      * sets exclude_guest = 1. This makes IBS pmu event init fail and
> > -      * thus perf ends up doing non-precise sampling. Avoid it by clearing
> > -      * exclude_guest.
> > -      */
> > -     if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD"))
> > -             attr->exclude_guest = 0;
> > -
> > -     free(env.cpuid);
> > -}
> > -
> >  /* Check whether the evsel's PMU supports the perf metrics */
> >  bool evsel__sys_has_perf_metrics(const struct evsel *evsel)
> >  {
> > diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
> > index 88f7b4241153..d80b54a6f450 100644
> > --- a/tools/perf/builtin-record.c
> > +++ b/tools/perf/builtin-record.c
> > @@ -4161,18 +4161,11 @@ int cmd_record(int argc, const char **argv)
> >               record.opts.tail_synthesize = true;
> >
> >       if (rec->evlist->core.nr_entries == 0) {
> > -             if (perf_pmu__has_hybrid()) {
> > -                     err = evlist__add_default_hybrid(rec->evlist,
> > -                                                      !record.opts.no_samples);
> > -             } else {
> > -                     err = __evlist__add_default(rec->evlist,
> > -                                                 !record.opts.no_samples);
> > -             }
> > +             bool can_profile_kernel = perf_event_paranoid_check(1);
> >
> > -             if (err < 0) {
> > -                     pr_err("Not enough memory for event selector list\n");
> > +             err = parse_event(rec->evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> > +             if (err)
> >                       goto out;
> > -             }
> >       }
> >
> >       if (rec->opts.target.tid && !rec->opts.no_inherit_set)
> > diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
> > index 48ee49e95c5e..27a7f068207d 100644
> > --- a/tools/perf/builtin-top.c
> > +++ b/tools/perf/builtin-top.c
> > @@ -1653,10 +1653,12 @@ int cmd_top(int argc, const char **argv)
> >       if (annotate_check_args(&top.annotation_opts) < 0)
> >               goto out_delete_evlist;
> >
> > -     if (!top.evlist->core.nr_entries &&
> > -         evlist__add_default(top.evlist) < 0) {
> > -             pr_err("Not enough memory for event selector list\n");
> > -             goto out_delete_evlist;
> > +     if (!top.evlist->core.nr_entries) {
> > +             bool can_profile_kernel = perf_event_paranoid_check(1);
> > +             int err = parse_event(top.evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> > +
> > +             if (err)
> > +                     goto out_delete_evlist;
> >       }
> >
> >       status = evswitch__init(&top.evswitch, top.evlist, stderr);
> > diff --git a/tools/perf/util/evlist-hybrid.c b/tools/perf/util/evlist-hybrid.c
> > index 0f59c80f27b2..64f78d06fe19 100644
> > --- a/tools/perf/util/evlist-hybrid.c
> > +++ b/tools/perf/util/evlist-hybrid.c
> > @@ -16,31 +16,6 @@
> >  #include <perf/evsel.h>
> >  #include <perf/cpumap.h>
> >
> > -int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
> > -{
> > -     struct evsel *evsel;
> > -     struct perf_pmu *pmu;
> > -     __u64 config;
> > -     struct perf_cpu_map *cpus;
> > -
> > -     perf_pmu__for_each_hybrid_pmu(pmu) {
> > -             config = PERF_COUNT_HW_CPU_CYCLES |
> > -                      ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT);
> > -             evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
> > -                                       config);
> > -             if (!evsel)
> > -                     return -ENOMEM;
> > -
> > -             cpus = perf_cpu_map__get(pmu->cpus);
> > -             evsel->core.cpus = cpus;
> > -             evsel->core.own_cpus = perf_cpu_map__get(cpus);
> > -             evsel->pmu_name = strdup(pmu->name);
> > -             evlist__add(evlist, evsel);
> > -     }
> > -
> > -     return 0;
> > -}
> > -
> >  bool evlist__has_hybrid(struct evlist *evlist)
> >  {
> >       struct evsel *evsel;
> > diff --git a/tools/perf/util/evlist-hybrid.h b/tools/perf/util/evlist-hybrid.h
> > index 4b000eda6626..0cded76eb344 100644
> > --- a/tools/perf/util/evlist-hybrid.h
> > +++ b/tools/perf/util/evlist-hybrid.h
> > @@ -7,7 +7,6 @@
> >  #include "evlist.h"
> >  #include <unistd.h>
> >
> > -int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
> >  bool evlist__has_hybrid(struct evlist *evlist);
> >
> >  #endif /* __PERF_EVLIST_HYBRID_H */
> > diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
> > index 9dfa977193b3..63f8821a5395 100644
> > --- a/tools/perf/util/evlist.c
> > +++ b/tools/perf/util/evlist.c
> > @@ -93,8 +93,15 @@ struct evlist *evlist__new(void)
> >  struct evlist *evlist__new_default(void)
> >  {
> >       struct evlist *evlist = evlist__new();
> > +     bool can_profile_kernel;
> > +     int err;
> > +
> > +     if (!evlist)
> > +             return NULL;
> >
> > -     if (evlist && evlist__add_default(evlist)) {
> > +     can_profile_kernel = perf_event_paranoid_check(1);
> > +     err = parse_event(evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
> > +     if (err) {
> >               evlist__delete(evlist);
> >               evlist = NULL;
> >       }
> > @@ -237,19 +244,6 @@ static void evlist__set_leader(struct evlist *evlist)
> >       perf_evlist__set_leader(&evlist->core);
> >  }
> >
> > -int __evlist__add_default(struct evlist *evlist, bool precise)
> > -{
> > -     struct evsel *evsel;
> > -
> > -     evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
> > -                               PERF_COUNT_HW_CPU_CYCLES);
> > -     if (evsel == NULL)
> > -             return -ENOMEM;
> > -
> > -     evlist__add(evlist, evsel);
> > -     return 0;
> > -}
> > -
> >  static struct evsel *evlist__dummy_event(struct evlist *evlist)
> >  {
> >       struct perf_event_attr attr = {
> > diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
> > index 5e7ff44f3043..664c6bf7b3e0 100644
> > --- a/tools/perf/util/evlist.h
> > +++ b/tools/perf/util/evlist.h
> > @@ -100,13 +100,6 @@ void evlist__delete(struct evlist *evlist);
> >  void evlist__add(struct evlist *evlist, struct evsel *entry);
> >  void evlist__remove(struct evlist *evlist, struct evsel *evsel);
> >
> > -int __evlist__add_default(struct evlist *evlist, bool precise);
> > -
> > -static inline int evlist__add_default(struct evlist *evlist)
> > -{
> > -     return __evlist__add_default(evlist, true);
> > -}
> > -
> >  int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs);
> >
> >  int __evlist__add_default_attrs(struct evlist *evlist,
> > diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
> > index 8c8f371ea2b5..1df8f967d2eb 100644
> > --- a/tools/perf/util/evsel.c
> > +++ b/tools/perf/util/evsel.c
> > @@ -316,48 +316,6 @@ struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx)
> >       return evsel;
> >  }
> >
> > -static bool perf_event_can_profile_kernel(void)
> > -{
> > -     return perf_event_paranoid_check(1);
> > -}
> > -
> > -struct evsel *evsel__new_cycles(bool precise __maybe_unused, __u32 type, __u64 config)
> > -{
> > -     struct perf_event_attr attr = {
> > -             .type   = type,
> > -             .config = config,
> > -             .exclude_kernel = !perf_event_can_profile_kernel(),
> > -     };
> > -     struct evsel *evsel;
> > -
> > -     event_attr_init(&attr);
> > -
> > -     /*
> > -      * Now let the usual logic to set up the perf_event_attr defaults
> > -      * to kick in when we return and before perf_evsel__open() is called.
> > -      */
> > -     evsel = evsel__new(&attr);
> > -     if (evsel == NULL)
> > -             goto out;
> > -
> > -     arch_evsel__fixup_new_cycles(&evsel->core.attr);
> > -
> > -     evsel->precise_max = true;
> > -
> > -     /* use asprintf() because free(evsel) assumes name is allocated */
> > -     if (asprintf(&evsel->name, "cycles%s%s%.*s",
> > -                  (attr.precise_ip || attr.exclude_kernel) ? ":" : "",
> > -                  attr.exclude_kernel ? "u" : "",
> > -                  attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0)
> > -             goto error_free;
> > -out:
> > -     return evsel;
> > -error_free:
> > -     evsel__delete(evsel);
> > -     evsel = NULL;
> > -     goto out;
> > -}
> > -
> >  int copy_config_terms(struct list_head *dst, struct list_head *src)
> >  {
> >       struct evsel_config_term *pos, *tmp;
> > @@ -1131,10 +1089,6 @@ void __weak arch_evsel__set_sample_weight(struct evsel *evsel)
> >       evsel__set_sample_bit(evsel, WEIGHT);
> >  }
> >
> > -void __weak arch_evsel__fixup_new_cycles(struct perf_event_attr *attr __maybe_unused)
> > -{
> > -}
> > -
> >  void __weak arch__post_evsel_config(struct evsel *evsel __maybe_unused,
> >                                   struct perf_event_attr *attr __maybe_unused)
> >  {
> > diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
> > index df8928745fc6..429b172cc94d 100644
> > --- a/tools/perf/util/evsel.h
> > +++ b/tools/perf/util/evsel.h
> > @@ -243,8 +243,6 @@ static inline struct evsel *evsel__newtp(const char *sys, const char *name)
> >  }
> >  #endif
> >
> > -struct evsel *evsel__new_cycles(bool precise, __u32 type, __u64 config);
> > -
> >  #ifdef HAVE_LIBTRACEEVENT
> >  struct tep_event *event_format__new(const char *sys, const char *name);
> >  #endif
> > @@ -312,7 +310,6 @@ void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_forma
> >  void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);
> >
> >  void arch_evsel__set_sample_weight(struct evsel *evsel);
> > -void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr);
> >  void arch__post_evsel_config(struct evsel *evsel, struct perf_event_attr *attr);
> >
> >  int evsel__set_filter(struct evsel *evsel, const char *filter);
> > --
> > 2.41.0.rc0.172.g3f132b7071-goog
> >
>
> --
>
> - Arnaldo
diff mbox series

Patch

diff --git a/tools/perf/arch/x86/util/evsel.c b/tools/perf/arch/x86/util/evsel.c
index ea3972d785d1..153cdca94cd4 100644
--- a/tools/perf/arch/x86/util/evsel.c
+++ b/tools/perf/arch/x86/util/evsel.c
@@ -16,26 +16,6 @@  void arch_evsel__set_sample_weight(struct evsel *evsel)
 	evsel__set_sample_bit(evsel, WEIGHT_STRUCT);
 }
 
-void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr)
-{
-	struct perf_env env = { .total_mem = 0, } ;
-
-	if (!perf_env__cpuid(&env))
-		return;
-
-	/*
-	 * On AMD, precise cycles event sampling internally uses IBS pmu.
-	 * But IBS does not have filtering capabilities and perf by default
-	 * sets exclude_guest = 1. This makes IBS pmu event init fail and
-	 * thus perf ends up doing non-precise sampling. Avoid it by clearing
-	 * exclude_guest.
-	 */
-	if (env.cpuid && strstarts(env.cpuid, "AuthenticAMD"))
-		attr->exclude_guest = 0;
-
-	free(env.cpuid);
-}
-
 /* Check whether the evsel's PMU supports the perf metrics */
 bool evsel__sys_has_perf_metrics(const struct evsel *evsel)
 {
diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c
index 88f7b4241153..d80b54a6f450 100644
--- a/tools/perf/builtin-record.c
+++ b/tools/perf/builtin-record.c
@@ -4161,18 +4161,11 @@  int cmd_record(int argc, const char **argv)
 		record.opts.tail_synthesize = true;
 
 	if (rec->evlist->core.nr_entries == 0) {
-		if (perf_pmu__has_hybrid()) {
-			err = evlist__add_default_hybrid(rec->evlist,
-							 !record.opts.no_samples);
-		} else {
-			err = __evlist__add_default(rec->evlist,
-						    !record.opts.no_samples);
-		}
+		bool can_profile_kernel = perf_event_paranoid_check(1);
 
-		if (err < 0) {
-			pr_err("Not enough memory for event selector list\n");
+		err = parse_event(rec->evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
+		if (err)
 			goto out;
-		}
 	}
 
 	if (rec->opts.target.tid && !rec->opts.no_inherit_set)
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 48ee49e95c5e..27a7f068207d 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1653,10 +1653,12 @@  int cmd_top(int argc, const char **argv)
 	if (annotate_check_args(&top.annotation_opts) < 0)
 		goto out_delete_evlist;
 
-	if (!top.evlist->core.nr_entries &&
-	    evlist__add_default(top.evlist) < 0) {
-		pr_err("Not enough memory for event selector list\n");
-		goto out_delete_evlist;
+	if (!top.evlist->core.nr_entries) {
+		bool can_profile_kernel = perf_event_paranoid_check(1);
+		int err = parse_event(top.evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
+
+		if (err)
+			goto out_delete_evlist;
 	}
 
 	status = evswitch__init(&top.evswitch, top.evlist, stderr);
diff --git a/tools/perf/util/evlist-hybrid.c b/tools/perf/util/evlist-hybrid.c
index 0f59c80f27b2..64f78d06fe19 100644
--- a/tools/perf/util/evlist-hybrid.c
+++ b/tools/perf/util/evlist-hybrid.c
@@ -16,31 +16,6 @@ 
 #include <perf/evsel.h>
 #include <perf/cpumap.h>
 
-int evlist__add_default_hybrid(struct evlist *evlist, bool precise)
-{
-	struct evsel *evsel;
-	struct perf_pmu *pmu;
-	__u64 config;
-	struct perf_cpu_map *cpus;
-
-	perf_pmu__for_each_hybrid_pmu(pmu) {
-		config = PERF_COUNT_HW_CPU_CYCLES |
-			 ((__u64)pmu->type << PERF_PMU_TYPE_SHIFT);
-		evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
-					  config);
-		if (!evsel)
-			return -ENOMEM;
-
-		cpus = perf_cpu_map__get(pmu->cpus);
-		evsel->core.cpus = cpus;
-		evsel->core.own_cpus = perf_cpu_map__get(cpus);
-		evsel->pmu_name = strdup(pmu->name);
-		evlist__add(evlist, evsel);
-	}
-
-	return 0;
-}
-
 bool evlist__has_hybrid(struct evlist *evlist)
 {
 	struct evsel *evsel;
diff --git a/tools/perf/util/evlist-hybrid.h b/tools/perf/util/evlist-hybrid.h
index 4b000eda6626..0cded76eb344 100644
--- a/tools/perf/util/evlist-hybrid.h
+++ b/tools/perf/util/evlist-hybrid.h
@@ -7,7 +7,6 @@ 
 #include "evlist.h"
 #include <unistd.h>
 
-int evlist__add_default_hybrid(struct evlist *evlist, bool precise);
 bool evlist__has_hybrid(struct evlist *evlist);
 
 #endif /* __PERF_EVLIST_HYBRID_H */
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 9dfa977193b3..63f8821a5395 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -93,8 +93,15 @@  struct evlist *evlist__new(void)
 struct evlist *evlist__new_default(void)
 {
 	struct evlist *evlist = evlist__new();
+	bool can_profile_kernel;
+	int err;
+
+	if (!evlist)
+		return NULL;
 
-	if (evlist && evlist__add_default(evlist)) {
+	can_profile_kernel = perf_event_paranoid_check(1);
+	err = parse_event(evlist, can_profile_kernel ? "cycles:P" : "cycles:Pu");
+	if (err) {
 		evlist__delete(evlist);
 		evlist = NULL;
 	}
@@ -237,19 +244,6 @@  static void evlist__set_leader(struct evlist *evlist)
 	perf_evlist__set_leader(&evlist->core);
 }
 
-int __evlist__add_default(struct evlist *evlist, bool precise)
-{
-	struct evsel *evsel;
-
-	evsel = evsel__new_cycles(precise, PERF_TYPE_HARDWARE,
-				  PERF_COUNT_HW_CPU_CYCLES);
-	if (evsel == NULL)
-		return -ENOMEM;
-
-	evlist__add(evlist, evsel);
-	return 0;
-}
-
 static struct evsel *evlist__dummy_event(struct evlist *evlist)
 {
 	struct perf_event_attr attr = {
diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 5e7ff44f3043..664c6bf7b3e0 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -100,13 +100,6 @@  void evlist__delete(struct evlist *evlist);
 void evlist__add(struct evlist *evlist, struct evsel *entry);
 void evlist__remove(struct evlist *evlist, struct evsel *evsel);
 
-int __evlist__add_default(struct evlist *evlist, bool precise);
-
-static inline int evlist__add_default(struct evlist *evlist)
-{
-	return __evlist__add_default(evlist, true);
-}
-
 int evlist__add_attrs(struct evlist *evlist, struct perf_event_attr *attrs, size_t nr_attrs);
 
 int __evlist__add_default_attrs(struct evlist *evlist,
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 8c8f371ea2b5..1df8f967d2eb 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -316,48 +316,6 @@  struct evsel *evsel__new_idx(struct perf_event_attr *attr, int idx)
 	return evsel;
 }
 
-static bool perf_event_can_profile_kernel(void)
-{
-	return perf_event_paranoid_check(1);
-}
-
-struct evsel *evsel__new_cycles(bool precise __maybe_unused, __u32 type, __u64 config)
-{
-	struct perf_event_attr attr = {
-		.type	= type,
-		.config	= config,
-		.exclude_kernel	= !perf_event_can_profile_kernel(),
-	};
-	struct evsel *evsel;
-
-	event_attr_init(&attr);
-
-	/*
-	 * Now let the usual logic to set up the perf_event_attr defaults
-	 * to kick in when we return and before perf_evsel__open() is called.
-	 */
-	evsel = evsel__new(&attr);
-	if (evsel == NULL)
-		goto out;
-
-	arch_evsel__fixup_new_cycles(&evsel->core.attr);
-
-	evsel->precise_max = true;
-
-	/* use asprintf() because free(evsel) assumes name is allocated */
-	if (asprintf(&evsel->name, "cycles%s%s%.*s",
-		     (attr.precise_ip || attr.exclude_kernel) ? ":" : "",
-		     attr.exclude_kernel ? "u" : "",
-		     attr.precise_ip ? attr.precise_ip + 1 : 0, "ppp") < 0)
-		goto error_free;
-out:
-	return evsel;
-error_free:
-	evsel__delete(evsel);
-	evsel = NULL;
-	goto out;
-}
-
 int copy_config_terms(struct list_head *dst, struct list_head *src)
 {
 	struct evsel_config_term *pos, *tmp;
@@ -1131,10 +1089,6 @@  void __weak arch_evsel__set_sample_weight(struct evsel *evsel)
 	evsel__set_sample_bit(evsel, WEIGHT);
 }
 
-void __weak arch_evsel__fixup_new_cycles(struct perf_event_attr *attr __maybe_unused)
-{
-}
-
 void __weak arch__post_evsel_config(struct evsel *evsel __maybe_unused,
 				    struct perf_event_attr *attr __maybe_unused)
 {
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index df8928745fc6..429b172cc94d 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -243,8 +243,6 @@  static inline struct evsel *evsel__newtp(const char *sys, const char *name)
 }
 #endif
 
-struct evsel *evsel__new_cycles(bool precise, __u32 type, __u64 config);
-
 #ifdef HAVE_LIBTRACEEVENT
 struct tep_event *event_format__new(const char *sys, const char *name);
 #endif
@@ -312,7 +310,6 @@  void __evsel__reset_sample_bit(struct evsel *evsel, enum perf_event_sample_forma
 void evsel__set_sample_id(struct evsel *evsel, bool use_sample_identifier);
 
 void arch_evsel__set_sample_weight(struct evsel *evsel);
-void arch_evsel__fixup_new_cycles(struct perf_event_attr *attr);
 void arch__post_evsel_config(struct evsel *evsel, struct perf_event_attr *attr);
 
 int evsel__set_filter(struct evsel *evsel, const char *filter);