From: Mathieu Poirier <mathieu.poirier@linaro•org>
To: gregkh@linuxfoundation•org
Cc: linux-arm-kernel@lists•infradead.org
Subject: [PATCH 04/17] coresight: etr_buf: Consolidate refcount initialization
Date: Thu, 29 Aug 2019 14:28:29 -0600 [thread overview]
Message-ID: <20190829202842.580-5-mathieu.poirier@linaro.org> (raw)
In-Reply-To: <20190829202842.580-1-mathieu.poirier@linaro.org>
From: Suzuki K Poulose <suzuki.poulose@arm•com>
We now use refcounts for the etr_buf users. Let us initialize it
while we allocate it.
Cc: Mathieu Poirier <mathieu.poirier@linaro•org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm•com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro•org>
---
drivers/hwtracing/coresight/coresight-tmc-etr.c | 13 ++-----------
1 file changed, 2 insertions(+), 11 deletions(-)
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c
index 17006705287a..3116d1f28e66 100644
--- a/drivers/hwtracing/coresight/coresight-tmc-etr.c
+++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c
@@ -871,6 +871,7 @@ static struct etr_buf *tmc_alloc_etr_buf(struct tmc_drvdata *drvdata,
return ERR_PTR(rc);
}
+ refcount_set(&etr_buf->refcount, 1);
dev_dbg(dev, "allocated buffer of size %ldKB in mode %d\n",
(unsigned long)size >> 10, etr_buf->mode);
return etr_buf;
@@ -1263,8 +1264,6 @@ get_perf_etr_buf_cpu_wide(struct tmc_drvdata *drvdata,
if (IS_ERR(etr_buf))
return etr_buf;
- refcount_set(&etr_buf->refcount, 1);
-
/* Now that we have a buffer, add it to the IDR. */
mutex_lock(&drvdata->idr_mutex);
ret = idr_alloc(&drvdata->idr, etr_buf, pid, pid + 1, GFP_KERNEL);
@@ -1291,19 +1290,11 @@ get_perf_etr_buf_per_thread(struct tmc_drvdata *drvdata,
struct perf_event *event, int nr_pages,
void **pages, bool snapshot)
{
- struct etr_buf *etr_buf;
-
/*
* In per-thread mode the etr_buf isn't shared, so just go ahead
* with memory allocation.
*/
- etr_buf = alloc_etr_buf(drvdata, event, nr_pages, pages, snapshot);
- if (IS_ERR(etr_buf))
- goto out;
-
- refcount_set(&etr_buf->refcount, 1);
-out:
- return etr_buf;
+ return alloc_etr_buf(drvdata, event, nr_pages, pages, snapshot);
}
static struct etr_buf *
--
2.17.1
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next prev parent reply other threads:[~2019-08-29 20:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-29 20:28 [PATCH 00/17] coresight: next v5.3-rc6 Mathieu Poirier
2019-08-29 20:28 ` [PATCH 01/17] coresight: etm4x: Two function calls less Mathieu Poirier
2019-08-29 20:28 ` [PATCH 02/17] coresight: etm4x: Add ETM PIDs for SDM845 and MSM8996 Mathieu Poirier
2019-08-29 20:28 ` [PATCH 03/17] coresight: cpu-debug: Add support for Qualcomm Kryo Mathieu Poirier
2019-08-29 20:28 ` Mathieu Poirier [this message]
2019-08-29 20:28 ` [PATCH 05/17] coresight: tmc-etr: Handle memory errors Mathieu Poirier
2019-08-29 20:28 ` [PATCH 06/17] coresight: tmc-etr: Check if non-secure access is enabled Mathieu Poirier
2019-08-29 20:28 ` [PATCH 07/17] coresight: Convert pr_warn to dev_warn for obsolete bindings Mathieu Poirier
2019-08-29 20:28 ` [PATCH 08/17] coresight: acpi: Static funnel support Mathieu Poirier
2019-08-29 20:28 ` [PATCH 09/17] coresight: etm4x: Remove superfluous setting of os_unlock Mathieu Poirier
2019-08-29 20:28 ` [PATCH 10/17] coresight: etm4x: Use explicit barriers on enable/disable Mathieu Poirier
2019-08-29 20:28 ` [PATCH 11/17] coresight: etm4x: use module_param instead of module_param_named Mathieu Poirier
2019-08-29 20:28 ` [PATCH 12/17] coresight: etm4x: improve clarity of etm4_os_unlock comment Mathieu Poirier
2019-08-29 20:28 ` [PATCH 13/17] coresight: tmc-etr: Fix updating buffer in not-snapshot mode Mathieu Poirier
2019-08-29 20:28 ` [PATCH 14/17] coresight: tmc-etr: Fix perf_data check Mathieu Poirier
2019-08-29 20:28 ` [PATCH 15/17] coresight: tmc: Make memory width mask computation into a function Mathieu Poirier
2019-08-29 20:28 ` [PATCH 16/17] coresight: tmc-etr: Decouple buffer sync and barrier packet insertion Mathieu Poirier
2019-08-29 20:28 ` [PATCH 17/17] coresight: tmc-etr: Add barrier packets when moving offset forward Mathieu Poirier
2019-09-03 20:02 ` [PATCH 00/17] coresight: next v5.3-rc6 Greg KH
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