riscv/qemu - qemu - Gitea: Git with a cup of tea

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Author	SHA1	Message	Date
Philippe Mathieu-Daudé	6acc5c0469	scripts/qemugdb: Remove shebang header These scripts are loaded as plugin by GDB (and they don't have any __main__ entry point). Remove the shebang header. Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Acked-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: John Snow <jsnow@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20200512103238.7078-2-philmd@redhat.com> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>	6 years ago
Dr. David Alan Gilbert	c900ef86c5	gdb command: qemu handlers A new gdb commands are added: qemu handlers That dumps an AioContext list (by default qemu_aio_context) possibly including a backtrace for cases it knows about (with the verbose option). Intended to help find why something is hanging waiting for IO. Use 'qemu handlers --verbose iohandler_ctx' to find out why your incoming migration is stuck. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Message-id: 1445951385-11924-1-git-send-email-dgilbert@redhat.com V2: Merge into one command with optional handlers arg, and only do backtrace in verbose mode (gdb) qemu handlers ---- {pfd = {fd = 6, events = 25, revents = 0}, io_read = 0x55869656ffd0 <event_notifier_dummy_cb>, io_write = 0x0, deleted = 0, opaque = 0x558698c4ce08, node = {le_next = 0x0, le_prev = 0x558698c4cdc0}} (gdb) qemu handlers iohandler_ctx ---- {pfd = {fd = 9, events = 25, revents = 0}, io_read = 0x558696581380 <fd_coroutine_enter>, io_write = 0x0, deleted = 0, opaque = 0x558698dc99d0, node = {le_next = 0x558698c4cca0, le_prev = 0x558698c4c1d0}} ---- {pfd = {fd = 4, events = 25, revents = 0}, io_read = 0x55869657b330 <sigfd_handler>, io_write = 0x0, deleted = 0, opaque = 0x4, node = {le_next = 0x558698c4c260, le_prev = 0x558699f72508}} ---- {pfd = {fd = 5, events = 25, revents = 0}, io_read = 0x55869656ffd0 <event_notifier_dummy_cb>, io_write = 0x0, deleted = 0, opaque = 0x558698c4c218, node = {le_next = 0x0, le_prev = 0x558698c4ccc8}} ---- (gdb) qemu handlers --verbose iohandler_ctx ---- {pfd = {fd = 9, events = 25, revents = 0}, io_read = 0x558696581380 <fd_coroutine_enter>, io_write = 0x0, deleted = 0, opaque = 0x558698dc99d0, node = {le_next = 0x558698c4cca0, le_prev = 0x558698c4c1d0}} #0 0x0000558696581820 in qemu_coroutine_switch (from_=from_@entry=0x558698cb3cf0, to_=to_@entry=0x7f421c37eac8, action=action@entry=COROUTINE_YIELD) at /home/dgilbert/git/qemu/coroutine-ucontext.c:177 #1 0x0000558696580c00 in qemu_coroutine_yield () at /home/dgilbert/git/qemu/qemu-coroutine.c:145 #2 0x00005586965814f5 in yield_until_fd_readable (fd=9) at /home/dgilbert/git/qemu/qemu-coroutine-io.c:90 #3 0x0000558696523937 in socket_get_buffer (opaque=0x55869a3dc620, buf=0x558698c505a0 "", pos=<optimized out>, size=32768) at /home/dgilbert/git/qemu/migration/qemu-file-unix.c:101 #4 0x0000558696521fac in qemu_fill_buffer (f=0x558698c50570) at /home/dgilbert/git/qemu/migration/qemu-file.c:227 #5 0x0000558696522989 in qemu_peek_byte (f=0x558698c50570, offset=0) at /home/dgilbert/git/qemu/migration/qemu-file.c:507 #6 0x0000558696522bf4 in qemu_get_be32 (f=0x558698c50570) at /home/dgilbert/git/qemu/migration/qemu-file.c:520 #7 0x0000558696522bf4 in qemu_get_be32 (f=f@entry=0x558698c50570) at /home/dgilbert/git/qemu/migration/qemu-file.c:604 #8 0x0000558696347e5c in qemu_loadvm_state (f=f@entry=0x558698c50570) at /home/dgilbert/git/qemu/migration/savevm.c:1821 #9 0x000055869651de8c in process_incoming_migration_co (opaque=0x558698c50570) at /home/dgilbert/git/qemu/migration/migration.c:336 #10 0x000055869658188a in coroutine_trampoline (i0=<optimized out>, i1=<optimized out>) at /home/dgilbert/git/qemu/coroutine-ucontext.c:80 #11 0x00007f420f05df10 in __start_context () at /lib64/libc.so.6 #12 0x00007ffc40815f50 in () #13 0x0000000000000000 in () ---- Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>	11 years ago

Author

SHA1

Message

Date

Philippe Mathieu-Daudé

6acc5c0469

scripts/qemugdb: Remove shebang header

These scripts are loaded as plugin by GDB (and they don't
have any __main__ entry point). Remove the shebang header.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20200512103238.7078-2-philmd@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>

6 years ago

Dr. David Alan Gilbert

c900ef86c5

gdb command: qemu handlers

A new gdb commands are added:

  qemu handlers

     That dumps an AioContext list (by default qemu_aio_context)
     possibly including a backtrace for cases it knows about
     (with the verbose option).  Intended to help find why something
     is hanging waiting for IO.

  Use 'qemu handlers --verbose iohandler_ctx'  to find out why
your incoming migration is stuck.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 1445951385-11924-1-git-send-email-dgilbert@redhat.com

V2:
  Merge into one command with optional handlers arg, and only do
    backtrace in verbose mode

 (gdb) qemu handlers
 ----
 {pfd = {fd = 6, events = 25, revents = 0}, io_read = 0x55869656ffd0
 <event_notifier_dummy_cb>, io_write = 0x0, deleted = 0, opaque =
 0x558698c4ce08, node = {le_next = 0x0, le_prev = 0x558698c4cdc0}}

 (gdb) qemu handlers iohandler_ctx
 ----
 {pfd = {fd = 9, events = 25, revents = 0}, io_read = 0x558696581380
 <fd_coroutine_enter>, io_write = 0x0, deleted = 0, opaque =
 0x558698dc99d0, node = {le_next = 0x558698c4cca0, le_prev =
 0x558698c4c1d0}}
 ----
 {pfd = {fd = 4, events = 25, revents = 0}, io_read = 0x55869657b330
 <sigfd_handler>, io_write = 0x0, deleted = 0, opaque = 0x4, node =
 {le_next = 0x558698c4c260, le_prev = 0x558699f72508}}
 ----
 {pfd = {fd = 5, events = 25, revents = 0}, io_read = 0x55869656ffd0
 <event_notifier_dummy_cb>, io_write = 0x0, deleted = 0, opaque =
 0x558698c4c218, node = {le_next = 0x0, le_prev = 0x558698c4ccc8}}
 ----
 (gdb) qemu handlers --verbose iohandler_ctx
 ----
 {pfd = {fd = 9, events = 25, revents = 0}, io_read = 0x558696581380
 <fd_coroutine_enter>, io_write = 0x0, deleted = 0, opaque =
 0x558698dc99d0, node = {le_next = 0x558698c4cca0, le_prev =
 0x558698c4c1d0}}
 #0  0x0000558696581820 in qemu_coroutine_switch
 (from_=from_@entry=0x558698cb3cf0, to_=to_@entry=0x7f421c37eac8,
 action=action@entry=COROUTINE_YIELD) at
 /home/dgilbert/git/qemu/coroutine-ucontext.c:177
 #1  0x0000558696580c00 in qemu_coroutine_yield () at
 /home/dgilbert/git/qemu/qemu-coroutine.c:145
 #2  0x00005586965814f5 in yield_until_fd_readable (fd=9) at
 /home/dgilbert/git/qemu/qemu-coroutine-io.c:90
 #3  0x0000558696523937 in socket_get_buffer (opaque=0x55869a3dc620,
 buf=0x558698c505a0 "", pos=<optimized out>, size=32768) at
 /home/dgilbert/git/qemu/migration/qemu-file-unix.c:101
 #4  0x0000558696521fac in qemu_fill_buffer (f=0x558698c50570) at
 /home/dgilbert/git/qemu/migration/qemu-file.c:227
 #5  0x0000558696522989 in qemu_peek_byte (f=0x558698c50570, offset=0)
     at /home/dgilbert/git/qemu/migration/qemu-file.c:507
 #6  0x0000558696522bf4 in qemu_get_be32 (f=0x558698c50570) at
 /home/dgilbert/git/qemu/migration/qemu-file.c:520
 #7  0x0000558696522bf4 in qemu_get_be32 (f=f@entry=0x558698c50570)
     at /home/dgilbert/git/qemu/migration/qemu-file.c:604
 #8  0x0000558696347e5c in qemu_loadvm_state (f=f@entry=0x558698c50570)
     at /home/dgilbert/git/qemu/migration/savevm.c:1821
 #9  0x000055869651de8c in process_incoming_migration_co
 (opaque=0x558698c50570)
     at /home/dgilbert/git/qemu/migration/migration.c:336
 #10 0x000055869658188a in coroutine_trampoline (i0=<optimized out>,
 i1=<optimized out>)
     at /home/dgilbert/git/qemu/coroutine-ucontext.c:80
 #11 0x00007f420f05df10 in __start_context () at /lib64/libc.so.6
 #12 0x00007ffc40815f50 in  ()
 #13 0x0000000000000000 in  ()

  ----
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

11 years ago

2 Commits (4d6ae2df56b7ef7a479a1656872a95e0ed23f2d9)