• Changbin Du's avatar
    mm, tracing: Print symbol name for call_site in trace events · f7d6316f
    Changbin Du authored
    To improve the readability of raw slab trace points, print the call_site ip
    using '%pS'. Then we can grep events with function names.
    
    [002] ....   808.188897: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80
    [002] ....   808.188898: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820
    [002] ....   808.188904: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8
    [002] ....   808.188913: kmem_cache_alloc: call_site=prepare_creds+0x26/0x100 ptr=0000000058d74ef8 bytes_req=168 bytes_alloc=576 gfp_flags=GFP_KERNEL
    [002] ....   808.188917: kmalloc: call_site=security_prepare_creds+0x77/0xa0 ptr=0000000062400820 bytes_req=8 bytes_alloc=336 gfp_flags=GFP_KERNEL|__GFP_ZERO
    [002] ....   808.188920: kmem_cache_alloc: call_site=getname_flags+0x4f/0x1e0 ptr=00000000cef40c80 bytes_req=4096 bytes_alloc=4480 gfp_flags=GFP_KERNEL
    [002] ....   808.188925: kmem_cache_free: call_site=putname+0x47/0x50 ptr=00000000cef40c80
    [002] ....   808.188926: kfree: call_site=security_cred_free+0x42/0x50 ptr=0000000062400820
    [002] ....   808.188931: kmem_cache_free: call_site=put_cred_rcu+0x88/0xa0 ptr=0000000058d74ef8
    
    Link: http://lkml.kernel.org/r/20190914103215.23301-1-changbin.du@gmail.comSigned-off-by: default avatarChangbin Du <changbin.du@gmail.com>
    Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
    f7d6316f
kmem.h 7.41 KB