From: Cédric Le Goater Date: Tue, 10 Sep 2019 08:18:50 +0000 (+0200) Subject: powerpc/xmon: Fix output of XIVE IPI X-Git-Tag: v5.4-rc1~99^2~6 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=855d9140a394229f21fd4fd216f377ed45bd93a3;p=linux.git powerpc/xmon: Fix output of XIVE IPI When dumping the XIVE state of an CPU IPI, xmon does not check if the CPU is started or not which can cause an error. Add a check for that and change the output to be on one line just as the XIVE interrupts of the machine. Signed-off-by: Cédric Le Goater Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20190910081850.26038-3-clg@kaod.org --- diff --git a/arch/powerpc/sysdev/xive/common.c b/arch/powerpc/sysdev/xive/common.c index b10919f08250..df832b09e3e9 100644 --- a/arch/powerpc/sysdev/xive/common.c +++ b/arch/powerpc/sysdev/xive/common.c @@ -237,25 +237,30 @@ static notrace void xive_dump_eq(const char *name, struct xive_q *q) i0 = be32_to_cpup(q->qpage + idx); idx = (idx + 1) & q->msk; i1 = be32_to_cpup(q->qpage + idx); - xmon_printf(" %s Q T=%d %08x %08x ...\n", name, - q->toggle, i0, i1); + xmon_printf("%s idx=%d T=%d %08x %08x ...", name, + q->idx, q->toggle, i0, i1); } notrace void xmon_xive_do_dump(int cpu) { struct xive_cpu *xc = per_cpu(xive_cpu, cpu); - xmon_printf("XIVE state for CPU %d:\n", cpu); - xmon_printf(" pp=%02x cppr=%02x\n", xc->pending_prio, xc->cppr); - xive_dump_eq("IRQ", &xc->queue[xive_irq_priority]); + xmon_printf("CPU %d:", cpu); + if (xc) { + xmon_printf("pp=%02x CPPR=%02x ", xc->pending_prio, xc->cppr); + #ifdef CONFIG_SMP - { - u64 val = xive_esb_read(&xc->ipi_data, XIVE_ESB_GET); - xmon_printf(" IPI state: %x:%c%c\n", xc->hw_ipi, - val & XIVE_ESB_VAL_P ? 'P' : 'p', - val & XIVE_ESB_VAL_Q ? 'Q' : 'q'); - } + { + u64 val = xive_esb_read(&xc->ipi_data, XIVE_ESB_GET); + + xmon_printf("IPI=0x%08x PQ=%c%c ", xc->hw_ipi, + val & XIVE_ESB_VAL_P ? 'P' : '-', + val & XIVE_ESB_VAL_Q ? 'Q' : '-'); + } #endif + xive_dump_eq("EQ", &xc->queue[xive_irq_priority]); + } + xmon_printf("\n"); } int xmon_xive_get_irq_config(u32 hw_irq, struct irq_data *d)