• Michael Ellerman's avatar
    powerpc/configs/64s: Enable CONFIG_PRINTK_CALLER · 598c01b5
    Michael Ellerman authored
    This adds the CPU or thread number to printk messages. This helps a
    lot when deciphering concurrent oopses that have been interleaved.
    
    Example output, of PID1 (T1) triggering a warning:
    
      [    1.581678][    T1] WARNING: CPU: 0 PID: 1 at crypto/rsa-pkcs1pad.c:539 pkcs1pad_verify+0x38/0x140
      [    1.581681][    T1] Modules linked in:
      [    1.581693][    T1] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty #1515
      [    1.581700][    T1] NIP:  c000000000207d64 LR: c000000000207d3c CTR: c000000000207d2c
      [    1.581708][    T1] REGS: c0000000fd2e7560 TRAP: 0700   Not tainted  (5.5.0-rc5-gcc-8.2.0-00121-gf84c2e595927-dirty)
      [    1.581712][    T1] MSR:  9000000000029033 <SF,HV,EE,ME,IR,DR,RI,LE>  CR: 44000222  XER: 00040000
    Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
    Link: https://lore.kernel.org/r/20200520121257.961112-1-mpe@ellerman.id.au
    598c01b5
powernv_defconfig 7.47 KB