linux-kernel - [PATCH 02/29] csky: Fixup perf probe failed

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Message-Id: <20210121065349.3188251-2-guoren@kernel.org>
Date:   Thu, 21 Jan 2021 14:53:22 +0800
From:   guoren@...nel.org
To:     guoren@...nel.org
Cc:     linux-kernel@...r.kernel.org, linux-csky@...r.kernel.org,
        Guo Ren <guoren@...ux.alibaba.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>
Subject: [PATCH 02/29] csky: Fixup perf probe failed

From: Guo Ren <guoren@...ux.alibaba.com>

Current perf init will failed with:
[    1.452433] csky-pmu: probe of soc:pmu failed with error -16

This patch fix it up with adding CPUHP_AP_PERF_CSKY_ONLINE in
cpuhotplug.h.

Signed-off-by: Guo Ren <guoren@...ux.alibaba.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
---
 arch/csky/kernel/perf_event.c | 2 +-
 include/linux/cpuhotplug.h    | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/arch/csky/kernel/perf_event.c b/arch/csky/kernel/perf_event.c
index 1a29f1157449..55d5a5379483 100644
--- a/arch/csky/kernel/perf_event.c
+++ b/arch/csky/kernel/perf_event.c
@@ -1319,7 +1319,7 @@ int csky_pmu_device_probe(struct platform_device *pdev,
 		pr_notice("[perf] PMU request irq fail!\n");
 	}
 
-	ret = cpuhp_setup_state(CPUHP_AP_PERF_ONLINE, "AP_PERF_ONLINE",
+	ret = cpuhp_setup_state(CPUHP_AP_PERF_CSKY_ONLINE, "AP_PERF_ONLINE",
 				csky_pmu_starting_cpu,
 				csky_pmu_dying_cpu);
 	if (ret) {
diff --git a/include/linux/cpuhotplug.h b/include/linux/cpuhotplug.h
index 0042ef362511..d3e26dc81494 100644
--- a/include/linux/cpuhotplug.h
+++ b/include/linux/cpuhotplug.h
@@ -185,6 +185,7 @@ enum cpuhp_state {
 	CPUHP_AP_PERF_POWERPC_TRACE_IMC_ONLINE,
 	CPUHP_AP_PERF_POWERPC_HV_24x7_ONLINE,
 	CPUHP_AP_PERF_POWERPC_HV_GPCI_ONLINE,
+	CPUHP_AP_PERF_CSKY_ONLINE,
 	CPUHP_AP_WATCHDOG_ONLINE,
 	CPUHP_AP_WORKQUEUE_ONLINE,
 	CPUHP_AP_RCUTREE_ONLINE,
-- 
2.17.1