This patch changes the check of PMU access in pfm_read_pmds(). In the cell-spe-follow mode, we need to call the special function to check whether the target SPU program is running.
Signed-off-by: Takashi Yamamoto <[EMAIL PROTECTED]>
---
include/asm-powerpc/perfmon_kern.h | 13 +++++++++++++
perfmon/perfmon_rw.c | 14 +++++++++++++-
2 files changed, 26 insertions(+), 1 deletion(-)
--- a/include/asm-powerpc/perfmon_kern.h
+++ b/include/asm-powerpc/perfmon_kern.h
@@ -450,6 +450,19 @@ struct pfm_arch_context {
void *arg;
};
+/*
+ * This function returns whether the target SPU program is running.
+ */
+static inline int pfm_cell_can_access_pmu_in_cell_spe_follow(
+ struct pfm_context *ctx)
+{
+ struct pfm_arch_context *ctx_arch = pfm_ctx_arch(ctx);
+ if (ctx_arch->arg)
+ return 1;
+ else
+ return 0;
+}
+
#define PFM_ARCH_CTX_SIZE sizeof(struct pfm_arch_context)
/*
* PowerPC does not need extra alignment requirements for the sampling buffer
--- a/perfmon/perfmon_rw.c
+++ b/perfmon/perfmon_rw.c
@@ -498,7 +498,19 @@ int __pfm_read_pmds(struct pfm_context *
if (likely(ctx->state == PFM_CTX_LOADED)) {
can_access_pmu = __get_cpu_var(pmu_owner) == ctx->task
- || ctx->flags.system;
+ || ctx->flags.system;
+
+#ifdef CONFIG_PPC
+ /*
+ * In the cell_spe_follow mode,
+ * The target SPU program may run on the other CPU's SPU,
+ * So pfm_cell_can_access_pmu_in_cell_spe_follow(ctx)
+ * is used here.
+ */
+ if (ctx->flags.cell_spe_follow && !ctx->flags.system)
+ can_access_pmu =
+ pfm_cell_can_access_pmu_in_cell_spe_follow(ctx);
+#endif
if (can_access_pmu)
pfm_arch_serialize();
cell-change_read_pmds.patch
Description: Binary data
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