| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <20181119160352.ua2lx72l754imiek@lakrids.cambridge.arm.com>
Date: Mon, 19 Nov 2018 16:03:52 +0000
From: Mark Rutland <mark.rutland@....com>
To: Andrew Murray <andrew.murray@....com>
Cc: Peter Zijlstra <peterz@...radead.org>,
Ingo Molnar <mingo@...hat.com>,
Arnaldo Carvalho de Melo <acme@...nel.org>,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Will Deacon <will.deacon@....com>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
Thomas Gleixner <tglx@...utronix.de>,
Borislav Petkov <bp@...en8.de>, x86@...nel.org,
linux-alpha@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 09/10] drivers/perf: perf/core: generalise event
exclusion checking with perf macro
On Fri, Nov 16, 2018 at 10:24:12AM +0000, Andrew Murray wrote:
> Replace checking of perf event exclusion flags with perf macro.
>
> This is a functional change as exclude_host and exclude_guest are added
> in the following files:
>
> - drivers/perf/qcom_l2_pmu.c
> - drivers/perf/qcom_l3_pmu.c
> - drivers/perf/arm_pmu.c
>
> And exclude_idle and exclude_hv are added in these files:
>
> - drivers/perf/xgene_pmu.c
FWIW, that all sounds fine to me.
Assuming you fix up the 'macro' nit:
Acked-by: Mark Rutland <mark.rutland@....com>
... unless we go for Peter's core cap for this.
Thanks,
Mark.
> Signed-off-by: Andrew Murray <andrew.murray@....com>
> ---
> drivers/perf/arm-cci.c | 7 +------
> drivers/perf/arm-ccn.c | 5 +----
> drivers/perf/arm_dsu_pmu.c | 7 +------
> drivers/perf/arm_pmu.c | 9 +--------
> drivers/perf/hisilicon/hisi_uncore_pmu.c | 7 +------
> drivers/perf/qcom_l2_pmu.c | 3 +--
> drivers/perf/qcom_l3_pmu.c | 3 +--
> drivers/perf/xgene_pmu.c | 3 +--
> 8 files changed, 8 insertions(+), 36 deletions(-)
>
> diff --git a/drivers/perf/arm-cci.c b/drivers/perf/arm-cci.c
> index 1bfeb16..d749f19 100644
> --- a/drivers/perf/arm-cci.c
> +++ b/drivers/perf/arm-cci.c
> @@ -1328,12 +1328,7 @@ static int cci_pmu_event_init(struct perf_event *event)
> return -EOPNOTSUPP;
>
> /* We have no filtering of any kind */
> - if (event->attr.exclude_user ||
> - event->attr.exclude_kernel ||
> - event->attr.exclude_hv ||
> - event->attr.exclude_idle ||
> - event->attr.exclude_host ||
> - event->attr.exclude_guest)
> + if (event_has_exclude_flags(event))
> return -EINVAL;
>
> /*
> diff --git a/drivers/perf/arm-ccn.c b/drivers/perf/arm-ccn.c
> index 7dd850e..9a22a95 100644
> --- a/drivers/perf/arm-ccn.c
> +++ b/drivers/perf/arm-ccn.c
> @@ -741,10 +741,7 @@ static int arm_ccn_pmu_event_init(struct perf_event *event)
> return -EOPNOTSUPP;
> }
>
> - if (has_branch_stack(event) || event->attr.exclude_user ||
> - event->attr.exclude_kernel || event->attr.exclude_hv ||
> - event->attr.exclude_idle || event->attr.exclude_host ||
> - event->attr.exclude_guest) {
> + if (has_branch_stack(event) || event_has_exclude_flags(event)) {
> dev_dbg(ccn->dev, "Can't exclude execution levels!\n");
> return -EINVAL;
> }
> diff --git a/drivers/perf/arm_dsu_pmu.c b/drivers/perf/arm_dsu_pmu.c
> index 660cb8a..300ff3d 100644
> --- a/drivers/perf/arm_dsu_pmu.c
> +++ b/drivers/perf/arm_dsu_pmu.c
> @@ -563,12 +563,7 @@ static int dsu_pmu_event_init(struct perf_event *event)
> }
>
> if (has_branch_stack(event) ||
> - event->attr.exclude_user ||
> - event->attr.exclude_kernel ||
> - event->attr.exclude_hv ||
> - event->attr.exclude_idle ||
> - event->attr.exclude_host ||
> - event->attr.exclude_guest) {
> + event_has_exclude_flags(event)) {
> dev_dbg(dsu_pmu->pmu.dev, "Can't support filtering\n");
> return -EINVAL;
> }
> diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c
> index 7f01f6f..a03634f 100644
> --- a/drivers/perf/arm_pmu.c
> +++ b/drivers/perf/arm_pmu.c
> @@ -357,13 +357,6 @@ static irqreturn_t armpmu_dispatch_irq(int irq, void *dev)
> }
>
> static int
> -event_requires_mode_exclusion(struct perf_event_attr *attr)
> -{
> - return attr->exclude_idle || attr->exclude_user ||
> - attr->exclude_kernel || attr->exclude_hv;
> -}
> -
> -static int
> __hw_perf_event_init(struct perf_event *event)
> {
> struct arm_pmu *armpmu = to_arm_pmu(event->pmu);
> @@ -395,7 +388,7 @@ __hw_perf_event_init(struct perf_event *event)
> */
> if ((!armpmu->set_event_filter ||
> armpmu->set_event_filter(hwc, &event->attr)) &&
> - event_requires_mode_exclusion(&event->attr)) {
> + event_has_exclude_flags(event)) {
> pr_debug("ARM performance counters do not support "
> "mode exclusion\n");
> return -EOPNOTSUPP;
> diff --git a/drivers/perf/hisilicon/hisi_uncore_pmu.c b/drivers/perf/hisilicon/hisi_uncore_pmu.c
> index 9efd241..d3edff9 100644
> --- a/drivers/perf/hisilicon/hisi_uncore_pmu.c
> +++ b/drivers/perf/hisilicon/hisi_uncore_pmu.c
> @@ -143,12 +143,7 @@ int hisi_uncore_pmu_event_init(struct perf_event *event)
> return -EOPNOTSUPP;
>
> /* counters do not have these bits */
> - if (event->attr.exclude_user ||
> - event->attr.exclude_kernel ||
> - event->attr.exclude_host ||
> - event->attr.exclude_guest ||
> - event->attr.exclude_hv ||
> - event->attr.exclude_idle)
> + if (event_has_exclude_flags(event))
> return -EINVAL;
>
> /*
> diff --git a/drivers/perf/qcom_l2_pmu.c b/drivers/perf/qcom_l2_pmu.c
> index 842135c..d7d85a2 100644
> --- a/drivers/perf/qcom_l2_pmu.c
> +++ b/drivers/perf/qcom_l2_pmu.c
> @@ -510,8 +510,7 @@ static int l2_cache_event_init(struct perf_event *event)
> }
>
> /* We cannot filter accurately so we just don't allow it. */
> - if (event->attr.exclude_user || event->attr.exclude_kernel ||
> - event->attr.exclude_hv || event->attr.exclude_idle) {
> + if (event_has_exclude_flags(event)) {
> dev_dbg_ratelimited(&l2cache_pmu->pdev->dev,
> "Can't exclude execution levels\n");
> return -EOPNOTSUPP;
> diff --git a/drivers/perf/qcom_l3_pmu.c b/drivers/perf/qcom_l3_pmu.c
> index 2dc63d6..f27af67 100644
> --- a/drivers/perf/qcom_l3_pmu.c
> +++ b/drivers/perf/qcom_l3_pmu.c
> @@ -497,8 +497,7 @@ static int qcom_l3_cache__event_init(struct perf_event *event)
> /*
> * There are no per-counter mode filters in the PMU.
> */
> - if (event->attr.exclude_user || event->attr.exclude_kernel ||
> - event->attr.exclude_hv || event->attr.exclude_idle)
> + if (event_has_exclude_flags(event))
> return -EINVAL;
>
> /*
> diff --git a/drivers/perf/xgene_pmu.c b/drivers/perf/xgene_pmu.c
> index 0e31f13..1fcd5a0 100644
> --- a/drivers/perf/xgene_pmu.c
> +++ b/drivers/perf/xgene_pmu.c
> @@ -915,8 +915,7 @@ static int xgene_perf_event_init(struct perf_event *event)
> return -EINVAL;
>
> /* SOC counters do not have usr/os/guest/host bits */
> - if (event->attr.exclude_user || event->attr.exclude_kernel ||
> - event->attr.exclude_host || event->attr.exclude_guest)
> + if (event_has_exclude_flags(event))
> return -EINVAL;
>
> if (event->cpu < 0)
> --
> 2.7.4
>
Powered by blists - more mailing lists