Re: [PATCH perf-tools-next v4 1/4] perf trace: Introduce kernel symbol beautifier for virtual addresses
| Newsgroups | org.kernel.vger.linux-perf-users |
|---|---|
| Message-ID | <[email protected]> |
> Currently, when 'perf trace' formats tracepoint payloads or system call > arguments containing raw kernel virtual addresses (e.g., a work item > function pointer work_func_t in workqueue:workqueue_execute_start), > it prints them as raw hexadecimal values (e.g., 0xffffffff81234567). > This impairs readability when tracing kernel execution flows. > > Introduce a dedicated kernel symbol beautifier, > syscall_arg__scnprintf_ksym (i.e., SCA_KSYM), to resolve kernel > virtual addresses to human-readable symbol names and offsets > (e.g., "flush_to_ldisc"). > > The beautifier looks up the virtual address in the machine kernel maps via > machine__find_kernel_symbol(). If a valid kernel symbol is found, the > symbol name and offset are printed without requiring --libtraceevent; if > the address is zero, "NULL" is rendered; otherwise, it gracefully falls > back to hexadecimal formatting. > > Signed-off-by: Aaron Tomlin <[email protected]> Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/[email protected]?part=1