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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:57 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 17:39:57 +0000 |
commit | dc50eab76b709d68175a358d6e23a5a3890764d3 (patch) | |
tree | c754d0390db060af0213ff994f0ac310e4cfd6e9 /drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c | |
parent | Adding debian version 6.6.15-2. (diff) | |
download | linux-dc50eab76b709d68175a358d6e23a5a3890764d3.tar.xz linux-dc50eab76b709d68175a358d6e23a5a3890764d3.zip |
Merging upstream version 6.7.7.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c | 53 |
1 files changed, 21 insertions, 32 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c index 172aa10a88..4ae4720535 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/dc_fpu.c @@ -60,11 +60,9 @@ static DEFINE_PER_CPU(int, fpu_recursion_depth); */ inline void dc_assert_fp_enabled(void) { - int *pcpu, depth = 0; + int depth; - pcpu = get_cpu_ptr(&fpu_recursion_depth); - depth = *pcpu; - put_cpu_ptr(&fpu_recursion_depth); + depth = __this_cpu_read(fpu_recursion_depth); ASSERT(depth >= 1); } @@ -84,33 +82,28 @@ inline void dc_assert_fp_enabled(void) */ void dc_fpu_begin(const char *function_name, const int line) { - int *pcpu; + int depth; - pcpu = get_cpu_ptr(&fpu_recursion_depth); - *pcpu += 1; + WARN_ON_ONCE(!in_task()); + preempt_disable(); + depth = __this_cpu_inc_return(fpu_recursion_depth); - if (*pcpu == 1) { + if (depth == 1) { #if defined(CONFIG_X86) || defined(CONFIG_LOONGARCH) - migrate_disable(); kernel_fpu_begin(); #elif defined(CONFIG_PPC64) - if (cpu_has_feature(CPU_FTR_VSX_COMP)) { - preempt_disable(); + if (cpu_has_feature(CPU_FTR_VSX_COMP)) enable_kernel_vsx(); - } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { - preempt_disable(); + else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) enable_kernel_altivec(); - } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { - preempt_disable(); + else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) enable_kernel_fp(); - } #elif defined(CONFIG_ARM64) kernel_neon_begin(); #endif } - TRACE_DCN_FPU(true, function_name, line, *pcpu); - put_cpu_ptr(&fpu_recursion_depth); + TRACE_DCN_FPU(true, function_name, line, depth); } /** @@ -125,30 +118,26 @@ void dc_fpu_begin(const char *function_name, const int line) */ void dc_fpu_end(const char *function_name, const int line) { - int *pcpu; + int depth; - pcpu = get_cpu_ptr(&fpu_recursion_depth); - *pcpu -= 1; - if (*pcpu <= 0) { + depth = __this_cpu_dec_return(fpu_recursion_depth); + if (depth == 0) { #if defined(CONFIG_X86) || defined(CONFIG_LOONGARCH) kernel_fpu_end(); - migrate_enable(); #elif defined(CONFIG_PPC64) - if (cpu_has_feature(CPU_FTR_VSX_COMP)) { + if (cpu_has_feature(CPU_FTR_VSX_COMP)) disable_kernel_vsx(); - preempt_enable(); - } else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) { + else if (cpu_has_feature(CPU_FTR_ALTIVEC_COMP)) disable_kernel_altivec(); - preempt_enable(); - } else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) { + else if (!cpu_has_feature(CPU_FTR_FPU_UNAVAILABLE)) disable_kernel_fp(); - preempt_enable(); - } #elif defined(CONFIG_ARM64) kernel_neon_end(); #endif + } else { + WARN_ON_ONCE(depth < 0); } - TRACE_DCN_FPU(false, function_name, line, *pcpu); - put_cpu_ptr(&fpu_recursion_depth); + TRACE_DCN_FPU(false, function_name, line, depth); + preempt_enable(); } |