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Date: Tue, 5 Jan 2021 08:55:27 -0500
From: "Liang, Kan" <kan.liang@...ux.intel.com>
To: Arnaldo Carvalho de Melo <acme@...nel.org>
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
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.
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
>>
>
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