oprofile/cell/spu_profiler.c

1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <asm/cell-pmu.h>
20 static u32 *samples;  variable
83 	 * the two 64-bit buffer entries that make up the  in spu_pc_extract()
84 	 * 128-bit trace_buffer entry.	Process two 64-bit values  in spu_pc_extract()
92 	for (spu = SPUS_PER_TB_ENTRY-1; spu >= 0; spu--) {  in spu_pc_extract()
96 		samples[spu * TRACE_ARRAY_SIZE + entry]  in spu_pc_extract()
98 		samples[(spu + SPUS_PER_TB_ENTRY) * TRACE_ARRAY_SIZE + entry]  in spu_pc_extract()
148 		 * the samples.	 In the very unlikely case that the processing  in profile_spus()
150 		 * started to process the samples.  Make sure only one kernel  in profile_spus()
151 		 * thread is working on the samples array at a time.  The  in profile_spus()
168 					samples + (k * TRACE_ARRAY_SIZE),  in profile_spus()
182 	hrtimer_forward(timer, timer->base->get_time(), kt);  in profile_spus()
186 	printk(KERN_INFO "SPU_PROF: spu-prof timer ending\n");  in profile_spus()
193  * NOTE:  SPU profiling is done system-wide, not per-CPU.
196  * setting up OProfile to count SPU_CYCLES.
208 	/* Allocate arrays for collecting SPU PC samples */  in start_spu_profiling_cycles()
209 	samples = kcalloc(SPUS_PER_NODE * TRACE_ARRAY_SIZE, sizeof(u32),  in start_spu_profiling_cycles()
212 	if (!samples)  in start_spu_profiling_cycles()
213 		return -ENOMEM;  in start_spu_profiling_cycles()
224  * NOTE:  SPU profiling is done system-wide, not per-CPU.
227  * setting up OProfile to count SPU_CYCLES.
241 	kfree(samples);  in stop_spu_profiling_cycles()