Hi Leo
On 09/02/2022 09:33, Leo Yan wrote:
Hi Suzuki,
On Wed, Feb 09, 2022 at 05:47:24AM +0000, Suzuki Kuruppassery Poulose wrote:
Hi Leo
On 04/02/2022 15:24, Leo Yan wrote:
Updates to the values and the index are protected via the spinlock. Ensure we use the same lock to read the value safely.
Signed-off-by: Leo Yan leo.yan@linaro.org Reviewed-by: Suzuki K Poulose suzuki.poulose@arm.com
drivers/hwtracing/coresight/coresight-etm4x-sysfs.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c index 10ef2a29006e..2f3b4eef8261 100644 --- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c +++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c @@ -2111,7 +2111,9 @@ static ssize_t vmid_val_show(struct device *dev, struct etmv4_drvdata *drvdata = dev_get_drvdata(dev->parent); struct etmv4_config *config = &drvdata->config;
- spin_lock(&drvdata->spinlock); val = (unsigned long)config->vmid_val[config->vmid_idx];
- spin_unlock(&drvdata->spinlock); return scnprintf(buf, PAGE_SIZE, "%#lx\n", val); }
I have queued this patch.
Thanks!
For the rest, we would need to wait until the helper lands in the rc.
Sorry, that was not the exact argument, see below.
The helper function patch has been landed on the mainline kernel, it would be safe to merge the rest patches. https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?i...
The coresight queue is based on rc1 and we already created a stable tag for TRBE erratas, which was pulled into arm64. So, (correct me if I am wrong), AFAIU, we cannot rebase the queue on to rc2 where the patch landed. But happy to proceed, if there is a solution.
Mathieu, what do you think ?
Cheers Suzuki