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Date: Sun, 5 Mar 2023 14:57:59 +0530 From: Manish Bhardwaj <bhardwajmanish18@...il.com> To: bhardwajmanish18@...il.com Cc: acme@...nel.org, alexander.shishkin@...ux.intel.com, irogers@...gle.com, jolsa@...nel.org, linux-kernel@...r.kernel.org, linux-perf-users@...r.kernel.org, mark.rutland@....com, mingo@...hat.com, namhyung@...nel.org, peterz@...radead.org Subject: [PATCH] perf/core: introduced stub APIs for exported APIs Introduced stub APIs for exported APIs so that we can build independent module without any error if CONFIG_PERF_EVENT feature is disabled in kernel. drivers/platform/tegra/uncore_pmu/tegra23x_perf_uncore.c: In function _scf_pmu_device_probe_: drivers/platform/tegra/uncore_pmu/tegra23x_perf_uncore.c:596: 8: error: implicit declaration of function _perf_pmu_register_ [-Werror=implicit-function-declaration] err = perf_pmu_register(&uncore_pmu->pmu, uncore_pmu->pmu.name, 531 | ^~~~~~~~~~~~~~~~~ drivers/platform/tegra/uncore_pmu/tegra23x_perf_uncore.c: In function _scf_pmu_device_remove_: drivers/platform/tegra/uncore_pmu/tegra23x_perf_uncore.c:611: 2: error: implicit declaration of function _perf_pmu_unregister_; did you mean _device_unregister_? [-Werror=implicit-function-declaration] 611 | perf_pmu_unregister(&uncore_pmu->pmu); | ^~~~~~~~~~~~~~~~~~~ | device_unregister cc1: some warnings being treated as errors scripts/Makefile.build:297: recipe for target 'drivers/platform/tegra/uncore_pmu/tegra23x_perf_uncore.o' failed make[7]: *** [drivers/platform/tegra/ uncore_pmu/tegra23x_perf_uncore.o] Error 1 Signed-off-by: Manish Bhardwaj <bhardwajmanish18@...il.com> --- include/linux/perf_event.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index d5628a7b5eaa..96259320aff1 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1679,6 +1679,42 @@ extern int perf_event_account_interrupt(struct perf_event *event); extern int perf_event_period(struct perf_event *event, u64 value); extern u64 perf_event_pause(struct perf_event *event, bool reset); #else /* !CONFIG_PERF_EVENTS: */ +static void perf_event_addr_filters_sync(struct perf_event *event) { } +static u64 perf_event_read_value(struct perf_event *event, + u64 *enabled, u64 *running) +{ + return 0; +} +static void perf_event_update_userpage(struct perf_event *event) { } +static void perf_register_guest_info_callbacks(struct perf_guest_info_callbacks *cbs) { } +static void perf_unregister_guest_info_callbacks(struct perf_guest_info_callbacks *cbs) { } +static void perf_report_aux_output_id(struct perf_event *event, u64 hw_id) { } +static void perf_tp_event(u16 event_type, u64 count, void *record, + int entry_size, struct pt_regs *regs, + struct hlist_head *head, int rctx, + struct task_struct *task) +{ +} +static int perf_pmu_register(struct pmu *pmu, const char *name, int type) +{ + return -1; +} +static void perf_pmu_unregister(struct pmu *pmu) { } +static struct perf_event * +perf_event_create_kernel_counter(struct perf_event_attr *attr, + int cpu, + struct task_struct *task, + perf_overflow_handler_t callback, + void *context) +{ + return NULL; +} +static void perf_pmu_migrate_context(struct pmu *pmu, int src_cpu, int dst_cpu) { } +static ssize_t perf_event_sysfs_show(struct device *dev, struct device_attribute *attr, + char *page) +{ + return -1; +} static inline void * perf_aux_output_begin(struct perf_output_handle *handle, struct perf_event *event) { return NULL; } base-commit: b01fe98d34f3bed944a93bd8119fed80c856fad8 -- 2.39.2
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