Hi all,
This patch add support of guest user space symbols for perf kvm command.
Example:
# perf kvm --guestmount /tmp/guestmount/ top
Samples: 1K of event 'cycles', Event count (approx.): 259112905
17.34% libcrypto.so.1.0.1e [u] 0x000000000007d971
5.60% [guest.kernel] [g] kallsyms_expand_symbol
5.44% libcrypto.so.1.0.1e [u] md5_block_asm_data_order
4.09% [guest.kernel] [g] number.isra.1
3.59% [guest.kernel] [g] vsnprintf
3.52% sshd [u] 0x00000000000441c0
2.37% [guest.kernel] [g] format_decode
2.36% [guest.kernel] [g] memcpy
2.11% [guest.kernel] [g] strnlen
# perf kvm --guestmount /tmp/guestmount/ record -a sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.828 MB perf.data.guest (~36163
samples) ]
# perf kvm --guestmount /tmp/guestmount/ report
Samples: 4K of event 'cycles', Event count (approx.): 2662750816
8.67% [guest/9217] dd [u]
0x0000000000004e90
6.62% [guest/9217] [guest.kernel.kallsyms.9217] [g] fget_light
6.17% [guest/9217] [guest.kernel.kallsyms.9217] [g] system_call
5.97% [guest/9217] [guest.kernel.kallsyms.9217] [g]
__srcu_read_lock
5.53% [guest/9217] [guest.kernel.kallsyms.9217] [g]
__srcu_read_unlock
5.47% [guest/9217] [guest.kernel.kallsyms.9217] [g]
__audit_syscall_exit
5.38% [guest/9217] [guest.kernel.kallsyms.9217] [g] fsnotify
5.32% [guest/9217] [guest.kernel.kallsyms.9217] [g]
system_call_after_swapgs
4.45% [guest/9217] libc-2.17.so [u]
__GI___libc_write
4.15% [guest/9217] [guest.kernel.kallsyms.9217] [g] sys_write
3.97% [guest/9217] [guest.kernel.kallsyms.9217] [g] vfs_read
3.78% [guest/9217] libc-2.17.so [u]
__GI___libc_read
Dongsheng Yang (4):
perf tools: Add support of guest in synthesize_threads.
perf tools: Add support for PERF_RECORD_MISC_GUEST_USER in
thread__find_addr_map().
perf tools: Add support of user space symbols for guest in perf kvm
top.
perf tools: Add support of user space symbols for guest in perf kvm
record.
tools/perf/builtin-record.c | 10 ++++++++++
tools/perf/builtin-top.c | 15 ++++++++++-----
tools/perf/util/event.c | 44 ++++++++++++++++++++++++++++++--------------
3 files changed, 50 insertions(+), 19 deletions(-)
--
1.8.2.1
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
