https://github.com/torvalds/linux
Commit fbd705a0c618 ("sched: Introduce the 'trace_sched_waking' tracepoint") added sched_waking tracepoint which should be preferred over sched_wakeup when analyzing scheduling delays. Update 'perf sched record' to collect sched_waking events if it exists and fallback to sched_wakeup if it does not. Similarly, update timehist command to skip sched_wakeup events if the session includes sched_waking (ie., sched_waking is preferred over sched_wakeup). Signed-off-by: David Ahern <dsahern@kernel.org> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20200807164844.44870-1-dsahern@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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perf sched: Prefer sched_waking event when it exists
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __MM_CMA_H__
#define __MM_CMA_H__
#include <linux/debugfs.h>
struct cma {
unsigned long base_pfn;
unsigned long count;
unsigned long *bitmap;
unsigned int order_per_bit; /* Order of pages represented by one bit */
struct mutex lock;
#ifdef CONFIG_CMA_DEBUGFS
struct hlist_head mem_head;
spinlock_t mem_head_lock;
struct debugfs_u32_array dfs_bitmap;
#endif
const char *name;
};
extern struct cma cma_areas[MAX_CMA_AREAS];
extern unsigned cma_area_count;
static inline unsigned long cma_bitmap_maxno(struct cma *cma)
{
return cma->count >> cma->order_per_bit;
}
#endif
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