From: Shaokun Zhang zhangshaokun@hisilicon.com
mainline inclusion from mainline-v5.12-rc3 commit 4e4cb8ca48bd68c00df67c10ff867016abb7391f category: cleanup bugzilla: 175148 CVE: NA Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
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The sanity check for counter index has been done in the function hisi_uncore_pmu_get_event_idx, so remove the redundant interface hisi_uncore_pmu_counter_valid() and sanity check.
Cc: Mark Rutland mark.rutland@arm.com Cc: Will Deacon will@kernel.org Cc: John Garry john.garry@huawei.com Cc: Jonathan Cameron Jonathan.Cameron@huawei.com Co-developed-by: Qi Liu liuqi115@huawei.com Signed-off-by: Qi Liu liuqi115@huawei.com Signed-off-by: Shaokun Zhang zhangshaokun@hisilicon.com Link: https://lore.kernel.org/r/1615186237-22263-2-git-send-email-zhangshaokun@his... Signed-off-by: Will Deacon will@kernel.org Reviewed-by: Shaokun Zhang zhangshaokun@hisilicon.com Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c | 20 +++---------------- drivers/perf/hisilicon/hisi_uncore_hha_pmu.c | 18 ++--------------- drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c | 18 ++--------------- drivers/perf/hisilicon/hisi_uncore_pmu.c | 11 ---------- drivers/perf/hisilicon/hisi_uncore_pmu.h | 1 - 5 files changed, 7 insertions(+), 61 deletions(-)
diff --git a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c index 5ac6c9113767..98a8d54006be 100644 --- a/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_ddrc_pmu.c @@ -65,29 +65,15 @@ static u32 hisi_ddrc_pmu_get_counter_offset(int cntr_idx) static u64 hisi_ddrc_pmu_read_counter(struct hisi_pmu *ddrc_pmu, struct hw_perf_event *hwc) { - /* Use event code as counter index */ - u32 idx = GET_DDRC_EVENTID(hwc); - - if (!hisi_uncore_pmu_counter_valid(ddrc_pmu, idx)) { - dev_err(ddrc_pmu->dev, "Unsupported event index:%d!\n", idx); - return 0; - } - - return readl(ddrc_pmu->base + hisi_ddrc_pmu_get_counter_offset(idx)); + return readl(ddrc_pmu->base + + hisi_ddrc_pmu_get_counter_offset(hwc->idx)); }
static void hisi_ddrc_pmu_write_counter(struct hisi_pmu *ddrc_pmu, struct hw_perf_event *hwc, u64 val) { - u32 idx = GET_DDRC_EVENTID(hwc); - - if (!hisi_uncore_pmu_counter_valid(ddrc_pmu, idx)) { - dev_err(ddrc_pmu->dev, "Unsupported event index:%d!\n", idx); - return; - } - writel((u32)val, - ddrc_pmu->base + hisi_ddrc_pmu_get_counter_offset(idx)); + ddrc_pmu->base + hisi_ddrc_pmu_get_counter_offset(hwc->idx)); }
/* diff --git a/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c b/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c index 41b2dceb5f26..3830bdbc1bb7 100644 --- a/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_hha_pmu.c @@ -51,29 +51,15 @@ static u32 hisi_hha_pmu_get_counter_offset(int cntr_idx) static u64 hisi_hha_pmu_read_counter(struct hisi_pmu *hha_pmu, struct hw_perf_event *hwc) { - u32 idx = hwc->idx; - - if (!hisi_uncore_pmu_counter_valid(hha_pmu, idx)) { - dev_err(hha_pmu->dev, "Unsupported event index:%d!\n", idx); - return 0; - } - /* Read 64 bits and like L3C, top 16 bits are RAZ */ - return readq(hha_pmu->base + hisi_hha_pmu_get_counter_offset(idx)); + return readq(hha_pmu->base + hisi_hha_pmu_get_counter_offset(hwc->idx)); }
static void hisi_hha_pmu_write_counter(struct hisi_pmu *hha_pmu, struct hw_perf_event *hwc, u64 val) { - u32 idx = hwc->idx; - - if (!hisi_uncore_pmu_counter_valid(hha_pmu, idx)) { - dev_err(hha_pmu->dev, "Unsupported event index:%d!\n", idx); - return; - } - /* Write 64 bits and like L3C, top 16 bits are WI */ - writeq(val, hha_pmu->base + hisi_hha_pmu_get_counter_offset(idx)); + writeq(val, hha_pmu->base + hisi_hha_pmu_get_counter_offset(hwc->idx)); }
static void hisi_hha_pmu_write_evtype(struct hisi_pmu *hha_pmu, int idx, diff --git a/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c b/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c index 705501d18d03..1685dc2431c9 100644 --- a/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_l3c_pmu.c @@ -50,29 +50,15 @@ static u32 hisi_l3c_pmu_get_counter_offset(int cntr_idx) static u64 hisi_l3c_pmu_read_counter(struct hisi_pmu *l3c_pmu, struct hw_perf_event *hwc) { - u32 idx = hwc->idx; - - if (!hisi_uncore_pmu_counter_valid(l3c_pmu, idx)) { - dev_err(l3c_pmu->dev, "Unsupported event index:%d!\n", idx); - return 0; - } - /* Read 64-bits and the upper 16 bits are RAZ */ - return readq(l3c_pmu->base + hisi_l3c_pmu_get_counter_offset(idx)); + return readq(l3c_pmu->base + hisi_l3c_pmu_get_counter_offset(hwc->idx)); }
static void hisi_l3c_pmu_write_counter(struct hisi_pmu *l3c_pmu, struct hw_perf_event *hwc, u64 val) { - u32 idx = hwc->idx; - - if (!hisi_uncore_pmu_counter_valid(l3c_pmu, idx)) { - dev_err(l3c_pmu->dev, "Unsupported event index:%d!\n", idx); - return; - } - /* Write 64-bits and the upper 16 bits are WI */ - writeq(val, l3c_pmu->base + hisi_l3c_pmu_get_counter_offset(idx)); + writeq(val, l3c_pmu->base + hisi_l3c_pmu_get_counter_offset(hwc->idx)); }
static void hisi_l3c_pmu_write_evtype(struct hisi_pmu *l3c_pmu, int idx, diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c index 9dbdc3fc3bb4..ae84a43ec991 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.c +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c @@ -96,12 +96,6 @@ static bool hisi_validate_event_group(struct perf_event *event) return counters <= hisi_pmu->num_counters; }
-int hisi_uncore_pmu_counter_valid(struct hisi_pmu *hisi_pmu, int idx) -{ - return idx >= 0 && idx < hisi_pmu->num_counters; -} -EXPORT_SYMBOL_GPL(hisi_uncore_pmu_counter_valid); - int hisi_uncore_pmu_get_event_idx(struct perf_event *event) { struct hisi_pmu *hisi_pmu = to_hisi_pmu(event->pmu); @@ -131,11 +125,6 @@ EXPORT_SYMBOL_GPL(hisi_uncore_pmu_identifier_attr_show);
static void hisi_uncore_pmu_clear_event_idx(struct hisi_pmu *hisi_pmu, int idx) { - if (!hisi_uncore_pmu_counter_valid(hisi_pmu, idx)) { - dev_err(hisi_pmu->dev, "Unsupported event index:%d!\n", idx); - return; - } - clear_bit(idx, hisi_pmu->pmu_events.used_mask); }
diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.h b/drivers/perf/hisilicon/hisi_uncore_pmu.h index 25b7cbe1f818..6a7f5491ef7d 100644 --- a/drivers/perf/hisilicon/hisi_uncore_pmu.h +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.h @@ -78,7 +78,6 @@ struct hisi_pmu { u32 identifier; };
-int hisi_uncore_pmu_counter_valid(struct hisi_pmu *hisi_pmu, int idx); int hisi_uncore_pmu_get_event_idx(struct perf_event *event); void hisi_uncore_pmu_read(struct perf_event *event); int hisi_uncore_pmu_add(struct perf_event *event, int flags);