Stephane > Try making the syscall contiguous first. So adjust libpfm, no the kernel. > And yes, I was referring to the adjust_sys_base() function. >
I rebuilt my kernel to use syscall numbers that start with 280 (so they will be contiguous) for perfmon and then rebooted. I then rebuilt libpfm after changeing the value assigned to sys_base from 286 to 280 in the default case of the "adjust_sys_base()" function for the x86_64 arch. When I build libpfm, the code under "#ifdef PFMLIB_VERSION_22" is not getting compiled. When I run the make the compiles look like this: gcc -O2 -g -Wall -Werror -I/opt/hpctk/downloads/libpfm/libpfm-3.5 /lib/../include -D_REENTRANT -DCONFIG_PFMLIB_ARCH_X86_64 -I. -c pfmlib_os_linux.c When I run the tests now, I still get the invalid FD on the kernel call following the pfm_create_context because the FD allocated in the create call does not get returned to the caller. If I add "-DPFMLIB_VERSION_22" to the CFLAGS in config.mk then make libpfm, the FD allocated in the create call gets passed back to the caller and the next call gets a different error. The ./self program with this combination gets this result: [jax] (hpctk) examples> ./self pfmlib_os_linux.c.214 (adjust_sys_base): Entered sycall base 280 pfmlib_os_linux.c.128 (pfm_create_context): Entered pfmlib_os_linux.c.136 (pfm_create_context): VERSION_22 fd values r: 0 ctx_fd 3 pfmlib_core.c.368 (pfm_core_dispatch_counters): i=0 next_gen=0 last=1 isset=1 pfmlib_core.c.368 (pfm_core_dispatch_counters): i=0 next_gen=1 last=1 isset=0 pfmlib_core.c.375 (pfm_core_dispatch_counters): cannot assign generic counters cannot configure events: cannot assign events to counters Kernel messages for this run look like this (some debug messages have been added): perfmon: perfmon/perfmon_syscalls.c.365(sys_pfm_create_context): CPU6 [6619]: Entered perfmon: perfmon/perfmon.c.1517(__pfm_create_context): CPU6 [6619]: Entered perfmon: perfmon/perfmon_pmu.c.395(pfm_pmu_conf_get): CPU6 [6619]: Entered perfmon: perfmon/perfmon_file.c.699(pfm_alloc_fd): CPU6 [6619]: Entered perfmon: perfmon/perfmon_file.c.717(pfm_alloc_fd): CPU6 [6619]: new inode ino=20117 @ffff810122ebe6c0 perfmon: perfmon/perfmon_sets.c.490(pfm_find_set): CPU6 [6619]: looking for set=0 perfmon: perfmon/perfmon_sets.c.559(pfm_find_set): CPU6 [6619]: set_id=0 size=2584 view=ffff810116eae970 remap=0 mmap_offs=0 perfmon: perfmon/perfmon_sets.c.468(pfm_init_evtset): CPU6 [6619]: set0 pmc1=0x100000 perfmon: perfmon/perfmon.c.1626(__pfm_create_context): CPU6 [6619]: ctx=ffff810117980000 flags=0x0 system=0 notify_block=0 no_msg=0 use_fmt=0 remap=0 ctx_fd=3 mode=0 perfmon: perfmon/perfmon.c.1639(__pfm_create_context): CPU6 [6619]: got to normal return perfmon: perfmon/perfmon_sets.c.926(sys_pfm_getinfo_evtsets): CPU6 [6619]: Entered perfmon: perfmon/perfmon_syscalls.c.127(pfm_check_task_state): CPU6 [6619]: state=1 [-1] task_state=-1 check_mask=0x0 perfmon: perfmon/perfmon_sets.c.617(__pfm_getinfo_evtsets): CPU6 [6619]: set_id=0 perfmon: perfmon/perfmon_sets.c.667(__pfm_getinfo_evtsets): CPU6 [6619]: set 0 flags=0x0 eff_usec=0 runs=0 perfmon: perfmon/perfmon_file.c.509(__pfm_close): CPU6 [6619]: state=1 perfmon: perfmon/perfmon.c.118(pfm_context_free): CPU6 [6619]: free ctx @ffff810117980000 Results when I provide the PFMLIB_VERSION_22 conditional compile variable seem to be a little better. Is this the correct way to build ?? Do you have any idea what I may have messed up or where to look for "cannot assign events to counters" problem ?? Thanks Gary ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
