Messages in this thread | ![/](/images/icornerl.gif) | | Subject | Re: [patch] Re: [perf] Finding uninstalled modules Was Re: mailing list for trace users | From | Mike Galbraith <> | Date | Wed, 23 Sep 2009 15:50:00 +0200 |
| |
On Wed, 2009-09-23 at 16:10 +0300, Avi Kivity wrote: > On 09/23/2009 03:58 PM, Avi Kivity wrote:On 09/23/2009 03:58 PM, Avi > Kivity wrote: > > Not for me. 'perf report', for example, shows > > > > 63.08% qemu-system-x86 > > [kernel] [k] packet_exit > > 4.71% qemu-system-x86 > > [kernel] [k] hpet_next_event > > 4.38% init > > [kernel] [k] > > mwait_idle_with_hints > > > > While 'perf top' still shows vmx_vcpu_run. > > > > strace says: > > getcwd("/home/avi/kvm/linux-2.6"..., 4096) = 24 > ... > [no chdir] > ... > open("kernel/arch/x86/kvm/kvm-intel.ko", O_RDONLY) = -1 ENOENT (No > such file or directory)
*blink*
> That "kernel/" looks like it was meant for /lib/modules, not a kernel > tree. If I run 'perf report' from /lib/modules/2.6.31 I see vmx_vcpu_run.
So I need what's in your modules.dep to figure out where the rest of the path went.
/lib/modules/2.6.32-tip-smp/kernel/arch/x86/kvm/kvm-intel.ko
static int mod_dso__load_module_paths(struct mod_dso *self) { struct utsname uts; int count = 0, len; char *line = NULL; FILE *file; char *path; size_t n;
if (uname(&uts) < 0) goto out_failure;
len = strlen("/lib/modules/"); len += strlen(uts.release); len += strlen("/modules.dep");
path = calloc(1, len); if (path == NULL) goto out_failure;
strcat(path, "/lib/modules/"); strcat(path, uts.release); strcat(path, "/modules.dep");
file = fopen(path, "r");
| ![\](/images/icornerr.gif) |