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| author | Anup Patel <anup@brainfault.org> | 2018-10-02 22:15:07 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-10-23 03:03:37 +0300 |
| commit | 8b20d2db0a6d2761e0fc156eb74f7a55b92b3147 (patch) | |
| tree | 1a5a6b213805d6cec82f940351b7aed614fde409 /arch/riscv/include | |
| parent | 4b26d22fdff1e39647cc5952b01d329e83dedfe1 (diff) | |
| download | linux-8b20d2db0a6d2761e0fc156eb74f7a55b92b3147.tar.xz | |
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/include')
| -rw-r--r-- | arch/riscv/include/asm/smp.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/riscv/include/asm/smp.h b/arch/riscv/include/asm/smp.h index 47fd61dfc897..41aa73b476f4 100644 --- a/arch/riscv/include/asm/smp.h +++ b/arch/riscv/include/asm/smp.h @@ -25,8 +25,13 @@ extern unsigned long __cpuid_to_hartid_map[NR_CPUS]; #define cpuid_to_hartid_map(cpu) __cpuid_to_hartid_map[cpu] +struct seq_file; + #ifdef CONFIG_SMP +/* print IPI stats */ +void show_ipi_stats(struct seq_file *p, int prec); + /* SMP initialization hook for setup_arch */ void __init setup_smp(void); @@ -47,6 +52,10 @@ void riscv_cpuid_to_hartid_mask(const struct cpumask *in, struct cpumask *out); #else +static inline void show_ipi_stats(struct seq_file *p, int prec) +{ +} + static inline int riscv_hartid_to_cpuid(int hartid) { return 0; |