diff options
| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2018-07-11 22:40:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-07-15 14:52:57 +0300 |
| commit | 6f755e85c332de532d1bbcf1c9769aad08e8cb41 (patch) | |
| tree | 75a01a6a3744161aa7aa6403b2e684d942a29d7c /drivers/hwtracing/coresight/coresight-tmc-etr.c | |
| parent | ef32df53b73bd29d5bfa4af4fda287baa6dc6544 (diff) | |
| download | linux-6f755e85c332de532d1bbcf1c9769aad08e8cb41.tar.xz | |
coresight: Add helper for inserting synchronization packets
Right now we open code filling the trace buffer with synchronization
packets when the circular buffer wraps around in different drivers.
Move this to a common place. While at it, clean up the barrier_pkt
array to strip off the trailing '\0'.
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hwtracing/coresight/coresight-tmc-etr.c')
| -rw-r--r-- | drivers/hwtracing/coresight/coresight-tmc-etr.c | 13 |
1 files changed, 1 insertions, 12 deletions
diff --git a/drivers/hwtracing/coresight/coresight-tmc-etr.c b/drivers/hwtracing/coresight/coresight-tmc-etr.c index 18c9a184d31a..04206ff7a67c 100644 --- a/drivers/hwtracing/coresight/coresight-tmc-etr.c +++ b/drivers/hwtracing/coresight/coresight-tmc-etr.c @@ -91,9 +91,7 @@ ssize_t tmc_etr_get_sysfs_trace(struct tmc_drvdata *drvdata, static void tmc_etr_dump_hw(struct tmc_drvdata *drvdata) { - const u32 *barrier; u32 val; - u32 *temp; u64 rwp; rwp = tmc_read_rwp(drvdata); @@ -106,16 +104,7 @@ static void tmc_etr_dump_hw(struct tmc_drvdata *drvdata) if (val & TMC_STS_FULL) { drvdata->buf = drvdata->vaddr + rwp - drvdata->paddr; drvdata->len = drvdata->size; - - barrier = barrier_pkt; - temp = (u32 *)drvdata->buf; - - while (*barrier) { - *temp = *barrier; - temp++; - barrier++; - } - + coresight_insert_barrier_packet(drvdata->buf); } else { drvdata->buf = drvdata->vaddr; drvdata->len = rwp - drvdata->paddr; |