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perf mem: Support data page size 

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
  # 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] 0x0000000000000000  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] 0x0000000000000000  4K

Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Stephane Eranian <eranian@google.com>
Cc: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20210105195752.43489-3-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Kan Liang 2021-01-05 11:57:48 -08:00 committed by Arnaldo Carvalho de Melo
parent 407ee5c920
commit 06280e3b15
2 changed files with 22 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
tools/perf/Documentation/perf-mem.txt
View File

@ -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::

20
tools/perf/builtin-mem.c
View File

@ -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 @@ out_delete:
}
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 };