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Date: Wed, 13 Jan 2021 08:19:35 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: "Liang, Kan" <kan.liang@...ux.intel.com>
Cc: mingo@...nel.org, jolsa@...hat.com, linux-kernel@...r.kernel.org,
namhyung@...nel.org, eranian@...gle.com, ak@...ux.intel.com,
mark.rutland@....com, will@...nel.org, mpe@...erman.id.au
Subject: Re: [PATCH V3 5/9] perf mem: Support data page size
Em Tue, Jan 05, 2021 at 08:55:27AM -0500, Liang, Kan escreveu:
>
>
> On 12/19/2020 3:56 PM, Arnaldo Carvalho de Melo wrote:
> > Em Wed, Dec 16, 2020 at 10:58:01AM -0800, kan.liang@...ux.intel.com escreveu:
> > > From: Kan Liang <kan.liang@...ux.intel.com>
> > >
> > > Add option --data-page-size in "perf mem" to record/report data page
> > > size.
> > >
> > > Here are some examples.
> > > perf mem --phys-data --data-page-size report -D
> >
> > So I stopped at this cset, it isn't applying to my tree, I'll test what
> > I have, which is up to the patch before this one and push to Linus, as
> > the window is closing.
>
> Hi Arnaldo,
>
> Sorry for the late response. I was on vacation.
>
> I will rebase the rest of the patches on top of your perf/core branch and
> send them out shortly.
I just came back from vacation, will check this soon :-)
- Arnaldo
> Thanks,
> Kan
>
> >
> > - Arnaldo
> > > # PID, TID, IP, ADDR, PHYS ADDR, DATA PAGE SIZE, LOCAL WEIGHT, DSRC,
> > > # SYMBOL
> > > 20134 20134 0xffffffffb5bd2fd0 0x016ffff9a274e96a308 0x000000044e96a308
> > > 4K 1168 0x5080144
> > > /lib/modules/4.18.0-rc7+/build/vmlinux:perf_ctx_unlock
> > > 20134 20134 0xffffffffb63f645c 0xffffffffb752b814 0xcfb52b814 2M 225
> > > 0x26a100142 /lib/modules/4.18.0-rc7+/build/vmlinux:_raw_spin_lock
> > > 20134 20134 0xffffffffb660300c 0xfffffe00016b8bb0 0x0 4K 0 0x5080144
> > > /lib/modules/4.18.0-rc7+/build/vmlinux:__x86_indirect_thunk_rax
> > >
> > > perf mem --phys-data --data-page-size report --stdio
> > >
> > > # To display the perf.data header info, please use
> > > # --header/--header-only options.
> > > #
> > > #
> > > # Total Lost Samples: 0
> > > #
> > > # Samples: 5K of event 'cpu/mem-loads,ldlat=30/P'
> > > # Total weight : 281234
> > > # Sort order :
> > > # mem,sym,dso,symbol_daddr,dso_daddr,tlb,locked,phys_daddr,data_page_size
> > > #
> > > # Overhead Samples Memory access Symbol
> > > # Shared Object Data Symbol Data
> > > # Object TLB access Locked Data Physical
> > > # Address Data Page Size
> > > # ........ ............ ........................
> > > # ................................ ................
> > > # ........................................... .......................
> > > # ...................... ...... ......................
> > > # ......................
> > > #
> > > 28.54% 1826 L1 or L1 hit [k]
> > > __x86_indirect_thunk_rax [kernel.vmlinux] [k] 0xffffb0df31b0ff28
> > > [unknown] L1 or L2 hit No [k]
> > > 0000000000000000 4K
> > > 6.02% 256 L1 or L1 hit [.] touch_buffer
> > > dtlb [.] 0x00007ffd50109da8 [stack]
> > > L1 or L2 hit No [.] 0x000000042454ada8 4K
> > > 3.23% 5 L1 or L1 hit [k] clear_huge_page
> > > [kernel.vmlinux] [k] 0xffff9a2753b8ce60 [unknown]
> > > L1 or L2 hit No [k] 0x0000000453b8ce60 2M
> > > 2.98% 4 L1 or L1 hit [k] clear_page_erms
> > > [kernel.vmlinux] [k] 0xffffb0df31b0fd00 [unknown]
> > > L1 or L2 hit No [k] 0000000000000000 4K
> > >
> > > Acked-by: Namhyung Kim <namhyung@...nel.org>
> > > Acked-by: Jiri Olsa <jolsa@...hat.com>
> > > Signed-off-by: Kan Liang <kan.liang@...ux.intel.com>
> > > ---
> > > tools/perf/Documentation/perf-mem.txt | 3 +++
> > > tools/perf/builtin-mem.c | 20 +++++++++++++++++++-
> > > 2 files changed, 22 insertions(+), 1 deletion(-)
> > >
> > > diff --git a/tools/perf/Documentation/perf-mem.txt b/tools/perf/Documentation/perf-mem.txt
> > > index 199ea0f0a6c0..66177511c5c4 100644
> > > --- a/tools/perf/Documentation/perf-mem.txt
> > > +++ b/tools/perf/Documentation/perf-mem.txt
> > > @@ -63,6 +63,9 @@ OPTIONS
> > > --phys-data::
> > > Record/Report sample physical addresses
> > > +--data-page-size::
> > > + Record/Report sample data address page size
> > > +
> > > RECORD OPTIONS
> > > --------------
> > > -e::
> > > diff --git a/tools/perf/builtin-mem.c b/tools/perf/builtin-mem.c
> > > index 7d6ee2208709..f3aac85aa9d4 100644
> > > --- a/tools/perf/builtin-mem.c
> > > +++ b/tools/perf/builtin-mem.c
> > > @@ -30,6 +30,7 @@ struct perf_mem {
> > > bool dump_raw;
> > > bool force;
> > > bool phys_addr;
> > > + bool data_page_size;
> > > int operation;
> > > const char *cpu_list;
> > > DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
> > > @@ -124,6 +125,9 @@ static int __cmd_record(int argc, const char **argv, struct perf_mem *mem)
> > > if (mem->phys_addr)
> > > rec_argv[i++] = "--phys-data";
> > > + if (mem->data_page_size)
> > > + rec_argv[i++] = "--data-page-size";
> > > +
> > > for (j = 0; j < PERF_MEM_EVENTS__MAX; j++) {
> > > e = perf_mem_events__ptr(j);
> > > if (!e->record)
> > > @@ -173,6 +177,7 @@ dump_raw_samples(struct perf_tool *tool,
> > > struct perf_mem *mem = container_of(tool, struct perf_mem, tool);
> > > struct addr_location al;
> > > const char *fmt, *field_sep;
> > > + char str[PAGE_SIZE_NAME_LEN];
> > > if (machine__resolve(machine, &al, sample) < 0) {
> > > fprintf(stderr, "problem processing %d event, skipping it.\n",
> > > @@ -209,6 +214,12 @@ dump_raw_samples(struct perf_tool *tool,
> > > symbol_conf.field_sep);
> > > }
> > > + if (mem->data_page_size) {
> > > + printf("%s%s",
> > > + get_page_size_name(sample->data_page_size, str),
> > > + symbol_conf.field_sep);
> > > + }
> > > +
> > > if (field_sep)
> > > fmt = "%"PRIu64"%s0x%"PRIx64"%s%s:%s\n";
> > > else
> > > @@ -273,6 +284,9 @@ static int report_raw_events(struct perf_mem *mem)
> > > if (mem->phys_addr)
> > > printf("PHYS ADDR, ");
> > > + if (mem->data_page_size)
> > > + printf("DATA PAGE SIZE, ");
> > > +
> > > printf("LOCAL WEIGHT, DSRC, SYMBOL\n");
> > > ret = perf_session__process_events(session);
> > > @@ -283,7 +297,7 @@ static int report_raw_events(struct perf_mem *mem)
> > > }
> > > static char *get_sort_order(struct perf_mem *mem)
> > > {
> > > - bool has_extra_options = mem->phys_addr ? true : false;
> > > + bool has_extra_options = (mem->phys_addr | mem->data_page_size) ? true : false;
> > > char sort[128];
> > > /*
> > > @@ -302,6 +316,9 @@ static char *get_sort_order(struct perf_mem *mem)
> > > if (mem->phys_addr)
> > > strcat(sort, ",phys_daddr");
> > > + if (mem->data_page_size)
> > > + strcat(sort, ",data_page_size");
> > > +
> > > return strdup(sort);
> > > }
> > > @@ -447,6 +464,7 @@ int cmd_mem(int argc, const char **argv)
> > > " between columns '.' is reserved."),
> > > OPT_BOOLEAN('f', "force", &mem.force, "don't complain, do it"),
> > > OPT_BOOLEAN('p', "phys-data", &mem.phys_addr, "Record/Report sample physical addresses"),
> > > + OPT_BOOLEAN(0, "data-page-size", &mem.data_page_size, "Record/Report sample data address page size"),
> > > OPT_END()
> > > };
> > > const char *const mem_subcommands[] = { "record", "report", NULL };
> > > --
> > > 2.17.1
> > >
> >
--
- Arnaldo
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