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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-06-22 17:04:55 -0400 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2017-06-22 17:10:06 -0400 |
| commit | feaf1283d11794b9d518fcfd54b6bf8bee1f0b4b (patch) | |
| tree | 31122c0a329faf629559f7f250b605eeb988e8a0 /kernel/trace/ftrace.c | |
| parent | d0ba52f1d7649a3f088e410e860559cf36d479d0 (diff) | |
tracing: Show address when function names are not found
Currently, when a function is not found in kallsyms, instead of simply
showing the function address, it shows nothing at all:
# echo ':mod:kvm_intel' > /sys/kernel/tracing/set_ftrace_filter
# echo function > /sys/kernel/tracing/set_ftrace_filter
# qemu -enable-kvm /home/my-qemu-image
<Ctrl-C>
# rmmod kvm_intel
# cat /sys/kernel/tracing/trace
qemu-system-x86-2408 [001] d..2 135.013238: <-kvm_arch_hardware_enable
qemu-system-x86-2408 [001] .... 135.014574: <-kvm_arch_vm_ioctl
qemu-system-x86-2408 [001] .... 135.015420: <-kvm_vm_ioctl_check_extension
qemu-system-x86-2408 [001] .... 135.045411: <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: <-__do_cpuid_ent
qemu-system-x86-2408 [001] ...1 135.045413: <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045413: <-__do_cpuid_ent
When it should show:
qemu-system-x86-2408 [001] d..2 135.013238: 0xffffffffa02a39f0 <-kvm_arch_hardware_enable
qemu-system-x86-2408 [001] .... 135.014574: 0xffffffffa02a2ba0 <-kvm_arch_vm_ioctl
qemu-system-x86-2408 [001] .... 135.015420: 0xffffffffa029e4e0 <-kvm_vm_ioctl_check_extension
qemu-system-x86-2408 [001] .... 135.045411: 0xffffffffa02a1380 <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: 0xffffffffa029e160 <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: 0xffffffffa029e180 <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045412: 0xffffffffa029e520 <-__do_cpuid_ent
qemu-system-x86-2408 [001] ...1 135.045413: 0xffffffffa02a13b0 <-__do_cpuid_ent
qemu-system-x86-2408 [001] .... 135.045413: 0xffffffffa02a1380 <-__do_cpuid_ent
instead.
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/ftrace.c')
0 files changed, 0 insertions, 0 deletions