diff options
| author | Stefan Agner <stefan.agner@toradex.com> | 2018-01-25 13:30:27 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2018-03-29 09:21:20 +0200 |
| commit | 0e4156a2b18a2a18f1338856ee9f85b81dfa63bb (patch) | |
| tree | f483e6ebb907daf8a9c447229c1c4ca07e7e6a90 /recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch | |
| parent | a52566c5aa5f007cd6174793d8fed9b86fc6b2c1 (diff) | |
linux-toradex-rt_4.9-1.0.x: add kernel recipe with PREEMPT RT
Add kernel recipe which applies the PREEMPT RT patchset. Patches
used in the 4.1 kernel are either obsolete or have been updated.
The patch "Work around CPU stalls in the imx-sdma driver" seems
not to be necessary. The kernel did not show the reported stack
trace after one night of cyclictest while audio running.
Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch')
| -rw-r--r-- | recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch b/recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch new file mode 100644 index 0000000..238f23e --- /dev/null +++ b/recipes-kernel/linux/linux-toradex-rt-4.9-1.0.x/0001-gpu-viv-enable-PREEMPT-RT-fixes.patch @@ -0,0 +1,46 @@ +From 3a72b4b868fe160f57817fa54cc14aa235391970 Mon Sep 17 00:00:00 2001 +From: Stefan Agner <stefan.agner@toradex.com> +Date: Wed, 24 Jan 2018 16:35:37 +0100 +Subject: [PATCH 1/2] gpu-viv: enable PREEMPT RT fixes + +Set the preprocessor define gcdRT_KERNEL to enable PREEMPT RT +kernel ifdefs. Use new macro DECLARE_SWAITQUEUE to declare the +simple wait queue. + +Upstream-Status: Inappropriate [vendor kernel specific] + +Signed-off-by: Stefan Agner <stefan.agner@toradex.com> +--- + drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_linux.h | 2 ++ + drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c | 2 +- + 2 files changed, 3 insertions(+), 1 deletion(-) + +diff --git a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_linux.h b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_linux.h +index 32233cc3418e..fed9448d216e 100644 +--- a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_linux.h ++++ b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_linux.h +@@ -115,6 +115,8 @@ + + #define GetPageCount(size, offset) ((((size) + ((offset) & ~PAGE_MASK)) + PAGE_SIZE - 1) >> PAGE_SHIFT) + ++#define gcdRT_KERNEL ++ + #if LINUX_VERSION_CODE >= KERNEL_VERSION (3,7,0) + #define gcdVM_FLAGS (VM_IO | VM_DONTCOPY | VM_DONTEXPAND | VM_DONTDUMP) + #else +diff --git a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c +index 9bf60450f976..46ba3c6839ac 100644 +--- a/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c ++++ b/drivers/mxc/gpu-viv/hal/os/linux/kernel/gc_hal_kernel_os.c +@@ -6063,7 +6063,7 @@ gckOS_WaitSignal( + : msecs_to_jiffies(Wait); + + #ifdef gcdRT_KERNEL +- DEFINE_SWAITER(wait); ++ DECLARE_SWAITQUEUE(wait); + #else + DECLARE_WAITQUEUE(wait, current); + wait.flags |= WQ_FLAG_EXCLUSIVE; +-- +2.15.1 + |