Kernel internal size information is also useful to compare with other
binary. This patch print kernel text, rwdata, rodata, bss, and others.
Here's an example.
Reserved : 1181708 KB
.kernel : 296172 KB
.text : 16960 KB
.rwdata : 2299 KB
.rodata : 16464 KB
.bss : 7549 KB
.memmap : 196608 KB
.etc : 56293 KB
.unusable : 885536 KB
Signed-off-by: Jaewon Kim <jaewon31.kim@samsung.com>
---
include/linux/memblock.h | 6 ++++++
mm/memblock.c | 36 ++++++++++++++++++++++++++++++++++++
mm/mm_init.c | 6 +++++-
3 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/include/linux/memblock.h b/include/linux/memblock.h
index a83ad98ac252..7ab8b59bfbc1 100644
--- a/include/linux/memblock.h
+++ b/include/linux/memblock.h
@@ -623,6 +623,9 @@ extern void memblock_memsize_unset_name(void);
extern void memblock_memsize_enable_tracking(void);
extern void memblock_memsize_disable_tracking(void);
extern void memblock_memsize_mod_kernel_size(long size);
+extern void memblock_memsize_mod_memmap_size(long size);
+extern void memblock_memsize_kernel_code_data(unsigned long code,
+ unsigned long data, unsigned long ro, unsigned long bss);
#else
static inline void memblock_memsize_record(const char *name, phys_addr_t base,
phys_addr_t size, bool nomap,
@@ -633,6 +636,9 @@ static inline void memblock_memsize_unset_name(void) { }
static inline void memblock_memsize_enable_tracking(void){ }
static inline void memblock_memsize_disable_tracking(void){ }
static inline void memblock_memsize_mod_kernel_size(long size) { }
+static inline void memblock_memsize_mod_memmap_size(long size) { }
+static inline void memblock_memsize_kernel_code_data(unsigned long code,
+ unsigned long data, unsigned long ro, unsigned long bss) { }
#endif
#endif /* _LINUX_MEMBLOCK_H */
diff --git a/mm/memblock.c b/mm/memblock.c
index 0906d81f66c2..2fe0dc2575c5 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2061,6 +2061,11 @@ static struct memsize_rgn_struct memsize_rgn[CONFIG_MAX_MEMBLOCK_MEMSIZE] __init
static int memsize_rgn_count __initdata_memblock;
static const char *memblock_memsize_name __initdata_memblock;
static long memsize_kinit __initdata_memblock;
+static long memsize_memap __initdata_memblock;
+static unsigned long memsize_code __initdata_memblock;
+static unsigned long memsize_data __initdata_memblock;
+static unsigned long memsize_ro __initdata_memblock;
+static unsigned long memsize_bss __initdata_memblock;
static bool memblock_memsize_tracking __initdata_memblock = true;
void __init memblock_memsize_enable_tracking(void)
@@ -2073,11 +2078,25 @@ void __init memblock_memsize_disable_tracking(void)
memblock_memsize_tracking = false;
}
+void __init memblock_memsize_mod_memmap_size(long size)
+{
+ memsize_memap += size;
+}
+
void memblock_memsize_mod_kernel_size(long size)
{
memsize_kinit += size;
}
+void __init memblock_memsize_kernel_code_data(unsigned long code, unsigned long data,
+ unsigned long ro, unsigned long bss)
+{
+ memsize_code = code;
+ memsize_data = data;
+ memsize_ro = ro;
+ memsize_bss = bss;
+}
+
static void __init_memblock memsize_get_valid_name(char *valid_name, const char *name)
{
char *head, *tail, *found;
@@ -2691,6 +2710,11 @@ static int memblock_memsize_show(struct seq_file *m, void *private)
struct memsize_rgn_struct *rgn;
unsigned long reserved = 0, reusable = 0, total;
unsigned long system = totalram_pages() << PAGE_SHIFT;
+ unsigned long etc;
+
+ etc = memsize_kinit;
+ etc -= memsize_code + memsize_data + memsize_ro + memsize_bss +
+ memsize_memap;
sort(memsize_rgn, memsize_rgn_count,
sizeof(memsize_rgn[0]), memsize_rgn_cmp, NULL);
@@ -2723,6 +2747,18 @@ static int memblock_memsize_show(struct seq_file *m, void *private)
DIV_ROUND_UP(memsize_kinit + reserved, SZ_1K));
seq_printf(m, " .kernel : %7lu KB\n",
DIV_ROUND_UP(memsize_kinit, SZ_1K));
+ seq_printf(m, " .text : %7lu KB\n"
+ " .rwdata : %7lu KB\n"
+ " .rodata : %7lu KB\n"
+ " .bss : %7lu KB\n"
+ " .memmap : %7lu KB\n"
+ " .etc : %7lu KB\n",
+ DIV_ROUND_UP(memsize_code, SZ_1K),
+ DIV_ROUND_UP(memsize_data, SZ_1K),
+ DIV_ROUND_UP(memsize_ro, SZ_1K),
+ DIV_ROUND_UP(memsize_bss, SZ_1K),
+ DIV_ROUND_UP(memsize_memap, SZ_1K),
+ DIV_ROUND_UP(etc, SZ_1K));
seq_printf(m, " .unusable : %7lu KB\n",
DIV_ROUND_UP(reserved, SZ_1K));
seq_printf(m, "System : %7lu KB\n",
diff --git a/mm/mm_init.c b/mm/mm_init.c
index f72b852bd5b8..45187904db49 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -1587,8 +1587,10 @@ void __init *memmap_alloc(phys_addr_t size, phys_addr_t align,
MEMBLOCK_ALLOC_ACCESSIBLE,
nid);
- if (ptr && size > 0)
+ if (ptr && size > 0) {
page_init_poison(ptr, size);
+ memblock_memsize_mod_memmap_size((long)size);
+ }
return ptr;
}
@@ -2679,6 +2681,8 @@ static void __init mem_init_print_info(void)
init_data_size = __init_end - __init_begin;
init_code_size = _einittext - _sinittext;
+ memblock_memsize_kernel_code_data(codesize, datasize, rosize, bss_size);
+
/*
* Detect special cases and adjust section sizes accordingly:
* 1) .init.* may be embedded into .data sections
--
2.25.1Hi Jaewon, kernel test robot noticed the following build warnings: [auto build test WARNING on akpm-mm/mm-everything] [also build test WARNING on robh/for-next linus/master] [cannot apply to rppt-memblock/for-next v6.9 next-20240522] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Jaewon-Kim/memblock-introduce-memsize-showing-reserved-memory/20240521-104201 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything patch link: https://lore.kernel.org/r/20240521023957.2587005-10-jaewon31.kim%40samsung.com patch subject: [RESEND PATCH 09/10] memblock: print kernel internal size config: x86_64-randconfig-r052-20240522 (https://download.01.org/0day-ci/archive/20240523/202405230254.q2SvX2V8-lkp@intel.com/config) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240523/202405230254.q2SvX2V8-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <lkp@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202405230254.q2SvX2V8-lkp@intel.com/ All warnings (new ones prefixed by >>, old ones prefixed by <<): WARNING: modpost: missing MODULE_DESCRIPTION() in vmlinux.o >> WARNING: modpost: vmlinux: section mismatch in reference: memblock_memsize_mod_kernel_size+0x11 (section: .text) -> memsize_memap (section: .meminit.data) WARNING: modpost: missing MODULE_DESCRIPTION() in arch/x86/kernel/cpu/mce/mce-inject.o WARNING: modpost: missing MODULE_DESCRIPTION() in arch/x86/crypto/curve25519-x86_64.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/locktorture.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/locking/test-ww_mutex.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/rcutorture.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/rcuscale.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/rcu/refscale.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/time/clocksource-wdtest.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/time/time_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/torture.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/resource_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in kernel/sysctl-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in mm/kasan/kasan_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in mm/dmapool_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in mm/hwpoison-inject.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/fat/fat_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nfs/nfsv4.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp437.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp737.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp860.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp864.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp936.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp949.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp1251.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_iso8859-1.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_iso8859-6.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_cp1255.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_iso8859-15.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_koi8-r.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/mac-gaelic.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/mac-turkish.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/nls/nls_ucs2_utils.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/cramfs/cramfs.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/isofs/isofs.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/hfs/hfs.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/smb/common/cifs_arc4.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/smb/common/cifs_md4.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/qnx4/qnx4.o WARNING: modpost: missing MODULE_DESCRIPTION() in fs/qnx6/qnx6.o WARNING: modpost: missing MODULE_DESCRIPTION() in crypto/curve25519-generic.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/kunit/kunit-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/kunit/kunit-example-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/math/rational-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/string_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/string_helpers_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/find_bit_benchmark.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_firmware.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/cpumask_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_hash.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ida.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_list_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_module.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_sort.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_keys.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_static_key_base.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_printf.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bitmap.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_maple_tree.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_free_pages.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_kprobes.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_ref_tracker.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/atomic64_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/bitfield_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/checksum_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/list-test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/hashtable_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/test_bits.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/cmdline_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/slub_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/memcpy_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/is_signed_type_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/overflow_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/stackinit_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/fortify_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in lib/siphash_kunit.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/pinctrl/pinctrl-mcp23s08_i2c.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/video/backlight/platform_lcd.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/clk/clk_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/clk/clk-gate_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/clk/clk-fractional-divider_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dma/qcom/hdma.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/dma/dmatest.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/regulator/rt4831-regulator.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/tty/ttynull.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/lp.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/ppdev.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/char/tlclk.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_kunit_helpers.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_buddy_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_cmdline_parser_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_connector_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_damage_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_dp_mst_helper_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_exec_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_format_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_framebuffer_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_gem_shmem_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_managed_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_mm_test.o WARNING: modpost: missing MODULE_DESCRIPTION() in drivers/gpu/drm/tests/drm_modes_test.o -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
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