RISC-V: Show IPI stats
authorAnup Patel <anup@brainfault.org>
Tue, 2 Oct 2018 19:15:07 +0000 (12:15 -0700)
committerPalmer Dabbelt <palmer@sifive.com>
Tue, 23 Oct 2018 00:03:37 +0000 (17:03 -0700)
commit8b20d2db0a6d2761e0fc156eb74f7a55b92b3147
tree1a5a6b213805d6cec82f940351b7aed614fde409
parent4b26d22fdff1e39647cc5952b01d329e83dedfe1
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>
arch/riscv/include/asm/smp.h
arch/riscv/kernel/irq.c
arch/riscv/kernel/smp.c