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Commit 33204a0b authored by Yiwei Zhang's avatar Yiwei Zhang
Browse files

GPU Memory: add errno to error log messages 

This change also adopts the new program retrieval api.

Bug: 170674916
Test: build
Change-Id: I51a58e5730b170bf6b6db0f02792b007a69181e0
parent 5338559c

services/gpuservice/gpumem/GpuMem.cpp

+10 −5
Original line number Diff line number Diff line
@@ -43,18 +43,21 @@ void GpuMem::initialize() { 
    // Make sure bpf programs are loaded

    bpf::waitForProgsLoaded();



    int fd = bpf::bpfFdGet(kGpuMemTotalProgPath, BPF_F_RDONLY);

    errno = 0;

    int fd = bpf::retrieveProgram(kGpuMemTotalProgPath);

    if (fd < 0) {

        ALOGE("Failed to retrieve pinned program from %s", kGpuMemTotalProgPath);

        ALOGE("Failed to retrieve pinned program from %s [%d(%s)]", kGpuMemTotalProgPath, errno,

              strerror(errno));

        return;

    }



    // Attach the program to the tracepoint, and the tracepoint is automatically enabled here.

    errno = 0;

    int count = 0;

    while (bpf_attach_tracepoint(fd, kGpuMemTraceGroup, kGpuMemTotalTracepoint) < 0) {

        if (++count > kGpuWaitTimeout) {

            ALOGE("Failed to attach bpf program to %s/%s tracepoint", kGpuMemTraceGroup,

                  kGpuMemTotalTracepoint);

            ALOGE("Failed to attach bpf program to %s/%s tracepoint [%d(%s)]", kGpuMemTraceGroup,

                  kGpuMemTotalTracepoint, errno, strerror(errno));

            return;

        }

        // Retry until GPU driver loaded or timeout.
@@ -62,9 +65,11 @@ void GpuMem::initialize() { 
    }



    // Use the read-only wrapper BpfMapRO to properly retrieve the read-only map.

    errno = 0;

    auto map = bpf::BpfMapRO<uint64_t, uint64_t>(kGpuMemTotalMapPath);

    if (!map.isValid()) {

        ALOGE("Failed to create bpf map from %s", kGpuMemTotalMapPath);

        ALOGE("Failed to create bpf map from %s [%d(%s)]", kGpuMemTotalMapPath, errno,

              strerror(errno));

        return;

    }

    setGpuMemTotalMap(map);