| commit | d7fbf8df7ca0a5c7e85db79f7005f99cb461c525 | |
| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | |
| Mon, 26 Jun 2017 14:57:21 +0000 (26 10:57 -0400) | ||
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | |
| Mon, 26 Jun 2017 15:53:03 +0000 (26 11:53 -0400) | ||
| tree | 71911a278dd6da98089642b255384b9ded6345a1 | treesnapshot (tar.gz zip) |
| parent | 5985ea8bd5d1b820b909af49fbc2767a990080a6 | commitdiff |
ftrace: Implement cached modules tracing on module load
If a module is cached in the set_ftrace_filter, and that module is loaded,
then enable tracing on that module as if the cached module text was written
into set_ftrace_filter just as the module is loaded.
# echo ":mod:kvm_intel" >
# cat /sys/kernel/tracing/set_ftrace_filter
#### all functions enabled ####
:mod:kvm_intel
# modprobe kvm_intel
# cat /sys/kernel/tracing/set_ftrace_filter
vmx_get_rflags [kvm_intel]
vmx_get_pkru [kvm_intel]
vmx_get_interrupt_shadow [kvm_intel]
vmx_rdtscp_supported [kvm_intel]
vmx_invpcid_supported [kvm_intel]
[..]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
If a module is cached in the set_ftrace_filter, and that module is loaded,
then enable tracing on that module as if the cached module text was written
into set_ftrace_filter just as the module is loaded.
# echo ":mod:kvm_intel" >
# cat /sys/kernel/tracing/set_ftrace_filter
#### all functions enabled ####
:mod:kvm_intel
# modprobe kvm_intel
# cat /sys/kernel/tracing/set_ftrace_filter
vmx_get_rflags [kvm_intel]
vmx_get_pkru [kvm_intel]
vmx_get_interrupt_shadow [kvm_intel]
vmx_rdtscp_supported [kvm_intel]
vmx_invpcid_supported [kvm_intel]
[..]
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
| kernel/trace/ftrace.c | diffblobblamehistory |