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Re: [PATCH 6/7] migration: Dump sub-cmd name in loadvm_process_command t
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [PATCH 6/7] migration: Dump sub-cmd name in loadvm_process_command tp |
Date: |
Wed, 8 Dec 2021 18:41:22 +0000 |
User-agent: |
Mutt/2.1.3 (2021-09-10) |
* Peter Xu (peterx@redhat.com) wrote:
> It'll be easier to read the name rather than index of sub-cmd when debugging.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> migration/savevm.c | 2 +-
> migration/trace-events | 2 +-
> 2 files changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/migration/savevm.c b/migration/savevm.c
> index d59e976d50..17b8e25e00 100644
> --- a/migration/savevm.c
> +++ b/migration/savevm.c
> @@ -2271,7 +2271,7 @@ static int loadvm_process_command(QEMUFile *f)
> return qemu_file_get_error(f);
> }
>
> - trace_loadvm_process_command(cmd, len);
> + trace_loadvm_process_command(mig_cmd_args[cmd].name, len);
> if (cmd >= MIG_CMD_MAX || cmd == MIG_CMD_INVALID) {
No! you can't do that name lookup before the limit check.
Dave
> error_report("MIG_CMD 0x%x unknown (len 0x%x)", cmd, len);
> return -EINVAL;
> diff --git a/migration/trace-events b/migration/trace-events
> index b48d873b8a..d63a5915f5 100644
> --- a/migration/trace-events
> +++ b/migration/trace-events
> @@ -22,7 +22,7 @@ loadvm_postcopy_handle_resume(void) ""
> loadvm_postcopy_ram_handle_discard(void) ""
> loadvm_postcopy_ram_handle_discard_end(void) ""
> loadvm_postcopy_ram_handle_discard_header(const char *ramid, uint16_t len)
> "%s: %ud"
> -loadvm_process_command(uint16_t com, uint16_t len) "com=0x%x len=%d"
> +loadvm_process_command(const char *s, uint16_t len) "com=%s len=%d"
> loadvm_process_command_ping(uint32_t val) "0x%x"
> postcopy_ram_listen_thread_exit(void) ""
> postcopy_ram_listen_thread_start(void) ""
> --
> 2.32.0
>
--
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK
- Re: [PATCH 2/7] migration: Don't return for postcopy_chunk_hostpages(), (continued)
- [PATCH 1/7] migration: Drop dead code of ram_debug_dump_bitmap(), Peter Xu, 2021/12/07
- [PATCH 3/7] migration: Drop postcopy_chunk_hostpages(), Peter Xu, 2021/12/07
- [PATCH 4/7] migration: Do chunk page in postcopy_each_ram_send_discard(), Peter Xu, 2021/12/07
- [PATCH 5/7] migration: Drop return code for disgard ram process, Peter Xu, 2021/12/07
- [PATCH 6/7] migration: Dump sub-cmd name in loadvm_process_command tp, Peter Xu, 2021/12/07
- Re: [PATCH 6/7] migration: Dump sub-cmd name in loadvm_process_command tp,
Dr. David Alan Gilbert <=
- [PATCH 7/7] migration: Finer grained tracepoints for POSTCOPY_LISTEN, Peter Xu, 2021/12/07