Ravi Bangoria wrote: > > > On Wednesday 14 December 2016 01:06 PM, Ingo Molnar wrote: > > * Alexis Berlemont <alexis.berlem...@gmail.com> wrote: > > > >> Hi Masami, > >> > >> Many thanks for your mail. > >> > >> Here is another patch set which tries to fix the points you mentioned: > >> > >> * Skip the arguments containing a constant ($123); > >> * Review the code in charge of the register renaming (search for '%' > >> and parse it); > >> * Minor changes (print the argument in case of error, skipping, check > >> the sdt arg type index); > >> > >> Many thanks, > >> > >> Alexis. > >> > >> Alexis Berlemont (2): > >> perf sdt: add scanning of sdt probles arguments > >> perf probe: add sdt probes arguments into the uprobe cmd string > > I'd like to hijack this thread to report an SDT oddity - one of my boxen > > reports > > lots of SDT tracepoints in 'perf list': > > > > mem:<addr>[/len][:access] [Hardware breakpoint] > > > > sdt_libc:lll_lock_wait_private [SDT event] > > sdt_libc:longjmp [SDT event] > > sdt_libc:longjmp_target [SDT event] > > sdt_libc:memory_arena_new [SDT event] > > sdt_libc:memory_arena_retry [SDT event] > > sdt_libc:memory_arena_reuse [SDT event] > > sdt_libc:memory_arena_reuse_free_list [SDT event] > > sdt_libc:memory_arena_reuse_wait [SDT event] > > sdt_libc:memory_calloc_retry [SDT event] > > sdt_libc:memory_heap_free [SDT event] > > ... > > > > But none of them work: > > > > Error: No permissions to read > > /sys/kernel/debug/tracing/events/sdt_libc/longjmp > > Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' > > > > ... > > > > Error: File /sys/kernel/debug/tracing/events/sdt_libc/longjmp not found. > > Hint: Perhaps this kernel misses some CONFIG_ setting to enable this > > feature?. > > > > What kind of patches are required for SDT probes to work? > > Hi Ingo, > > Works for me on my x86 Fedora 25 box. May be some permission issue? > > @Alexis, Planning to progress on it :) ? I would like to prepare patch for > powerpc.
Hi, Just a quick mail to apologize. After a few weeks without answer, I forgot to regularly poll this thread during my free time. I've just noticed the patches you sent meanwhile... Once more sorry, Alexis. > > Thanks, > Ravi > > > Thanks, > > > > Ingo > > >
