From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org Cc: mathieu.poirier@linaro.org, suzuki.poulose@arm.com, mike.leach@linaro.org, Anshuman Khandual <anshuman.khandual@arm.com>, Linu Cherian <lcherian@marvell.com>, linux-kernel@vger.kernel.org Subject: [PATCH V2 09/11] coresight: etm-perf: Truncate the perf record if handle has no space Date: Wed, 13 Jan 2021 09:48:16 +0530 [thread overview] Message-ID: <1610511498-4058-10-git-send-email-anshuman.khandual@arm.com> (raw) In-Reply-To: <1610511498-4058-1-git-send-email-anshuman.khandual@arm.com> While starting off the etm event, just abort and truncate the perf record if the perf handle as no space left. This avoids configuring both source and sink devices in case the data cannot be consumed in perf. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/hwtracing/coresight/coresight-etm-perf.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index eb9e7e9..e776a07 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -347,6 +347,9 @@ static void etm_event_start(struct perf_event *event, int flags) if (!event_data) goto fail; + if (!handle->size) + goto fail_end_stop; + /* * Check if this ETM is allowed to trace, as decided * at etm_setup_aux(). This could be due to an unreachable -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Anshuman Khandual <anshuman.khandual@arm.com> To: linux-arm-kernel@lists.infradead.org, coresight@lists.linaro.org Cc: mathieu.poirier@linaro.org, Anshuman Khandual <anshuman.khandual@arm.com>, suzuki.poulose@arm.com, linux-kernel@vger.kernel.org, Linu Cherian <lcherian@marvell.com>, mike.leach@linaro.org Subject: [PATCH V2 09/11] coresight: etm-perf: Truncate the perf record if handle has no space Date: Wed, 13 Jan 2021 09:48:16 +0530 [thread overview] Message-ID: <1610511498-4058-10-git-send-email-anshuman.khandual@arm.com> (raw) In-Reply-To: <1610511498-4058-1-git-send-email-anshuman.khandual@arm.com> While starting off the etm event, just abort and truncate the perf record if the perf handle as no space left. This avoids configuring both source and sink devices in case the data cannot be consumed in perf. Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> --- drivers/hwtracing/coresight/coresight-etm-perf.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hwtracing/coresight/coresight-etm-perf.c b/drivers/hwtracing/coresight/coresight-etm-perf.c index eb9e7e9..e776a07 100644 --- a/drivers/hwtracing/coresight/coresight-etm-perf.c +++ b/drivers/hwtracing/coresight/coresight-etm-perf.c @@ -347,6 +347,9 @@ static void etm_event_start(struct perf_event *event, int flags) if (!event_data) goto fail; + if (!handle->size) + goto fail_end_stop; + /* * Check if this ETM is allowed to trace, as decided * at etm_setup_aux(). This could be due to an unreachable -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-01-13 4:20 UTC|newest] Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-01-13 4:18 [PATCH V2 00/11] arm64: coresight: Enable ETE and TRBE Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 01/11] coresight: etm-perf: Allow an event to use different sinks Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 02/11] coresight: Do not scan for graph if none is present Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 03/11] coresight: etm4x: Add support for PE OS lock Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 04/11] coresight: ete: Add support for ETE sysreg access Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 05/11] coresight: ete: Add support for ETE tracing Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 06/11] dts: bindings: Document device tree bindings for ETE Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-25 19:22 ` Rob Herring 2021-01-25 19:22 ` Rob Herring 2021-01-25 22:20 ` Suzuki K Poulose 2021-01-25 22:20 ` Suzuki K Poulose 2021-01-25 23:28 ` Suzuki K Poulose 2021-01-25 23:28 ` Suzuki K Poulose 2021-01-13 4:18 ` [PATCH V2 07/11] arm64: Add TRBE definitions Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 9:21 ` Suzuki K Poulose 2021-01-13 9:21 ` Suzuki K Poulose 2021-01-15 1:52 ` Anshuman Khandual 2021-01-15 1:52 ` Anshuman Khandual 2021-02-22 13:55 ` Catalin Marinas 2021-02-22 13:55 ` Catalin Marinas 2021-02-22 13:59 ` Catalin Marinas 2021-02-22 13:59 ` Catalin Marinas 2021-01-13 4:18 ` [PATCH V2 08/11] coresight: core: Add support for dedicated percpu sinks Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 9:43 ` Suzuki K Poulose 2021-01-13 9:43 ` Suzuki K Poulose 2021-01-15 2:36 ` Anshuman Khandual 2021-01-15 2:36 ` Anshuman Khandual 2021-01-15 12:31 ` Suzuki K Poulose 2021-01-15 12:31 ` Suzuki K Poulose 2021-01-13 4:18 ` Anshuman Khandual [this message] 2021-01-13 4:18 ` [PATCH V2 09/11] coresight: etm-perf: Truncate the perf record if handle has no space Anshuman Khandual 2021-01-13 9:48 ` Suzuki K Poulose 2021-01-13 9:48 ` Suzuki K Poulose 2021-01-13 4:18 ` [PATCH V2 10/11] coresight: sink: Add TRBE driver Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 15:28 ` Suzuki K Poulose 2021-01-13 15:28 ` Suzuki K Poulose 2021-01-15 5:29 ` Anshuman Khandual 2021-01-15 5:29 ` Anshuman Khandual 2021-01-15 12:43 ` Suzuki K Poulose 2021-01-15 12:43 ` Suzuki K Poulose 2021-01-17 12:10 ` Anshuman Khandual 2021-01-17 12:10 ` Anshuman Khandual 2021-01-13 4:18 ` [PATCH V2 11/11] dts: bindings: Document device tree bindings for Arm TRBE Anshuman Khandual 2021-01-13 4:18 ` Anshuman Khandual 2021-01-13 15:45 ` Rob Herring 2021-01-13 15:45 ` Rob Herring 2021-01-14 10:17 ` Suzuki K Poulose 2021-01-14 10:17 ` Suzuki K Poulose 2021-01-14 14:07 ` Rob Herring 2021-01-14 14:07 ` Rob Herring 2021-01-14 14:47 ` Suzuki K Poulose 2021-01-14 14:47 ` Suzuki K Poulose
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