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xiaoxiang pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/nuttx.git
commit 992d5e01273e20f84aaaa5c4440ba83f3b42beca
Author: xuxingliang <xuxingli...@xiaomi.com>
AuthorDate: Thu Sep 5 17:12:34 2024 +0800
tools/gdb: add `info shm` command
(gdb) info shm
/var/shm/xms:bq-325-1044165565 memsize: 1536000, paddr: 0x41de3970
/var/shm/xms:bq-325-2123092606 memsize: 1536000, paddr: 0x41f5a9a8
/var/shm/xms:fakemq-325-1835096569 memsize: 12, paddr: 0x420d19e0
(gdb)
Signed-off-by: xuxingliang <xuxingli...@xiaomi.com>
---
tools/gdb/fs.py | 68 +++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 file changed, 66 insertions(+), 2 deletions(-)
diff --git a/tools/gdb/fs.py b/tools/gdb/fs.py
index f00396b6d8..8b2602f8d4 100644
--- a/tools/gdb/fs.py
+++ b/tools/gdb/fs.py
@@ -19,12 +19,12 @@
############################################################################
import argparse
+import enum
import gdb
import utils
FSNODEFLAG_TYPE_MASK = utils.get_symbol_value("FSNODEFLAG_TYPE_MASK")
-FSNODEFLAG_TYPE_MOUNTPT = utils.get_symbol_value("FSNODEFLAG_TYPE_MOUNTPT")
CONFIG_PSEUDOFS_FILE = utils.get_symbol_value("CONFIG_PSEUDOFS_FILE")
CONFIG_PSEUDOFS_ATTRIBUTES =
utils.get_symbol_value("CONFIG_PSEUDOFS_ATTRIBUTES")
@@ -33,6 +33,35 @@ CONFIG_FS_BACKTRACE =
utils.get_symbol_value("CONFIG_FS_BACKTRACE")
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK = int(
utils.get_symbol_value("CONFIG_NFILE_DESCRIPTORS_PER_BLOCK")
)
+CONFIG_FS_SHMFS = utils.get_symbol_value("CONFIG_FS_SHMFS")
+
+
+class InodeType(enum.Enum):
+ # define FSNODEFLAG_TYPE_PSEUDODIR 0x00000000 /* Pseudo dir (default)
*/
+ # define FSNODEFLAG_TYPE_DRIVER 0x00000001 /* Character driver
*/
+ # define FSNODEFLAG_TYPE_BLOCK 0x00000002 /* Block driver
*/
+ # define FSNODEFLAG_TYPE_MOUNTPT 0x00000003 /* Mount point
*/
+ # define FSNODEFLAG_TYPE_NAMEDSEM 0x00000004 /* Named semaphore
*/
+ # define FSNODEFLAG_TYPE_MQUEUE 0x00000005 /* Message Queue
*/
+ # define FSNODEFLAG_TYPE_SHM 0x00000006 /* Shared memory region
*/
+ # define FSNODEFLAG_TYPE_MTD 0x00000007 /* Named MTD driver
*/
+ # define FSNODEFLAG_TYPE_SOFTLINK 0x00000008 /* Soft link
*/
+ # define FSNODEFLAG_TYPE_SOCKET 0x00000009 /* Socket
*/
+ # define FSNODEFLAG_TYPE_PIPE 0x0000000a /* Pipe
*/
+ # define FSNODEFLAG_TYPE_NAMEDEVENT 0x0000000b /* Named event group
*/
+ PSEUDODIR = 0
+ DRIVER = 1
+ BLOCK = 2
+ MOUNTPT = 3
+ NAMEDSEM = 4
+ MQUEUE = 5
+ SHM = 6
+ MTD = 7
+ SOFTLINK = 8
+ SOCKET = 9
+ PIPE = 10
+ NAMEDEVENT = 11
+ UNKNOWN = 12
def get_inode_name(inode):
@@ -55,6 +84,19 @@ def inode_getpath(inode):
return name
+def inode_gettype(inode) -> InodeType:
+ if not inode:
+ return InodeType.UNKNOWN
+
+ type = int(inode["i_flags"] & FSNODEFLAG_TYPE_MASK)
+
+ # check if it's a valid type in InodeType
+ if type in [e.value for e in InodeType]:
+ return InodeType(type)
+
+ return InodeType.UNKNOWN
+
+
def get_file(tcb, fd):
group = tcb["group"]
filelist = group["tg_filelist"]
@@ -183,7 +225,7 @@ class Mount(gdb.Command):
super(Mount, self).__init__("mount", gdb.COMMAND_USER)
def mountpt_filter(self, node, path):
- if node["i_flags"] & FSNODEFLAG_TYPE_MASK == FSNODEFLAG_TYPE_MOUNTPT:
+ if inode_gettype(node) == InodeType.MOUNTPT:
statfs = node["u"]["i_mops"]["statfs"]
funcname = gdb.block_for_pc(int(statfs)).function.print_name
fstype = funcname.split("_")[0]
@@ -295,9 +337,31 @@ class ForeachInode(gdb.Command):
self.print_inode_info(arg["root_inode"], 1, "")
+class InfoShmfs(gdb.Command):
+ """Show share memory usage"""
+
+ def __init__(self):
+ super(InfoShmfs, self).__init__("info shm", gdb.COMMAND_USER)
+
+ def shm_filter(self, node, path):
+ if inode_gettype(node) != InodeType.SHM:
+ return
+
+ obj = node["i_private"].cast(gdb.lookup_type("struct
shmfs_object_s").pointer())
+ length = obj["length"]
+ paddr = obj["paddr"]
+ print(f" {path} memsize: {length}, paddr: {paddr}")
+
+ def invoke(self, args, from_tty):
+ foreach_inode(self.shm_filter)
+
+
Fdinfo()
if not utils.get_symbol_value("CONFIG_DISABLE_MOUNTPOINT"):
Mount()
ForeachInode()
+
+if CONFIG_FS_SHMFS:
+ InfoShmfs()
