diff options
author | Anup Patel <anup@brainfault.org> | 2018-10-02 12:15:07 -0700 |
---|---|---|
committer | Palmer Dabbelt <palmer@sifive.com> | 2018-10-22 17:03:37 -0700 |
commit | 8b20d2db0a6d2761e0fc156eb74f7a55b92b3147 (patch) | |
tree | 1a5a6b213805d6cec82f940351b7aed614fde409 /arch/riscv/kernel/irq.c | |
parent | 4b26d22fdff1e39647cc5952b01d329e83dedfe1 (diff) | |
download | linux-8b20d2db0a6d2761e0fc156eb74f7a55b92b3147.tar.gz |
RISC-V: Show IPI stats
This patch provides arch_show_interrupts() implementation to show IPI stats via /proc/interrupts. Now the contents of /proc/interrupts" will look like below: CPU0 CPU1 CPU2 CPU3 8: 17 7 6 14 SiFive PLIC 8 virtio0 10: 10 10 9 11 SiFive PLIC 10 ttyS0 IPI0: 170 673 251 79 Rescheduling interrupts IPI1: 1 12 27 1 Function call interrupts Signed-off-by: Anup Patel <anup@brainfault.org> [Atish - Fixed checkpatch errors] Signed-off-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Changes since v2: - Remove use of IPI_CALL_WAKEUP because it's being removed Changes since v1: - Add stub inline show_ipi_stats() function for !CONFIG_SMP - Make ipi_names[] dynamically sized at compile time - Minor beautification of ipi_names[] using tabs Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'arch/riscv/kernel/irq.c')
-rw-r--r-- | arch/riscv/kernel/irq.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/riscv/kernel/irq.c b/arch/riscv/kernel/irq.c index ca4593317e45..48e6b7db83a1 100644 --- a/arch/riscv/kernel/irq.c +++ b/arch/riscv/kernel/irq.c @@ -8,6 +8,8 @@ #include <linux/interrupt.h> #include <linux/irqchip.h> #include <linux/irqdomain.h> +#include <linux/seq_file.h> +#include <asm/smp.h> /* * Possible interrupt causes: @@ -24,6 +26,12 @@ */ #define INTERRUPT_CAUSE_FLAG (1UL << (__riscv_xlen - 1)) +int arch_show_interrupts(struct seq_file *p, int prec) +{ + show_ipi_stats(p, prec); + return 0; +} + asmlinkage void __irq_entry do_IRQ(struct pt_regs *regs) { struct pt_regs *old_regs = set_irq_regs(regs); |