diff options
Diffstat (limited to 'recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch b/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch deleted file mode 100644 index 9296878..0000000 --- a/recipes-kernel/linux/linux-toradex-5.4-2.3.x/0002-ddr-perf-prevent-BUG-with-rt-patch.patch +++ /dev/null @@ -1,34 +0,0 @@ -From 066e66d9222f70d3e21a7df077ac6b623881c9cc Mon Sep 17 00:00:00 2001 -From: Max Krummenacher <max.krummenacher@toradex.com> -Date: Tue, 24 Sep 2019 14:19:24 +0200 -Subject: [PATCH 2/2] ddr-perf: prevent BUG() with rt patch - -With the RT patch applied the kernel prints a BUG backtrace during boot: - -| BUG: using smp_processor_id() in preemptible [00000000] code: swapper/0/1 - -Prevent this by replacing the smp_processor_id() call with a get_cpu() .. -put_cpu() construct. - -Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com> ---- - drivers/perf/ddr-perf.c | 3 ++- - 1 file changed, 2 insertions(+), 1 deletion(-) - -diff --git a/drivers/perf/ddr-perf.c b/drivers/perf/ddr-perf.c -index 73fe52ee8b95..744a6454d6a4 100644 ---- a/drivers/perf/ddr-perf.c -+++ b/drivers/perf/ddr-perf.c -@@ -470,7 +470,8 @@ static int ddr_perf_probe(struct platform_device *pdev) - - pmu->devtype = (struct fsl_ddr_devtype_data *)of_id->data; - -- cpumask_set_cpu(smp_processor_id(), &pmu->cpu); -+ cpumask_set_cpu(get_cpu(), &pmu->cpu); -+ put_cpu(); - ret = perf_pmu_register(&(pmu->pmu), name, -1); - if (ret) - goto ddr_perf_err; --- -2.20.1 - |