#ifndef __PERF_STATS_H #define __PERF_STATS_H #include #include #include "xyarray.h" struct stats { double n, mean, M2; u64 max, min; }; enum perf_stat_evsel_id { PERF_STAT_EVSEL_ID__NONE = 0, PERF_STAT_EVSEL_ID__CYCLES_IN_TX, PERF_STAT_EVSEL_ID__TRANSACTION_START, PERF_STAT_EVSEL_ID__ELISION_START, PERF_STAT_EVSEL_ID__CYCLES_IN_TX_CP, PERF_STAT_EVSEL_ID__TOPDOWN_TOTAL_SLOTS, PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_ISSUED, PERF_STAT_EVSEL_ID__TOPDOWN_SLOTS_RETIRED, PERF_STAT_EVSEL_ID__TOPDOWN_FETCH_BUBBLES, PERF_STAT_EVSEL_ID__TOPDOWN_RECOVERY_BUBBLES, PERF_STAT_EVSEL_ID__MAX, }; struct perf_stat_evsel { struct stats res_stats[3]; enum perf_stat_evsel_id id; }; enum aggr_mode { AGGR_NONE, AGGR_GLOBAL, AGGR_SOCKET, AGGR_CORE, AGGR_THREAD, AGGR_UNSET, }; struct perf_stat_config { enum aggr_mode aggr_mode; bool scale; FILE *output; unsigned int interval; }; void update_stats(struct stats *stats, u64 val); double avg_stats(struct stats *stats); double stddev_stats(struct stats *stats); double rel_stddev_stats(double stddev, double avg); static inline void init_stats(struct stats *stats) { stats->n = 0.0; stats->mean = 0.0; stats->M2 = 0.0; stats->min = (u64) -1; stats->max = 0; } struct perf_evsel; struct perf_evlist; bool __perf_evsel_stat__is(struct perf_evsel *evsel, enum perf_stat_evsel_id id); #define perf_stat_evsel__is(evsel, id) \ __perf_evsel_stat__is(evsel, PERF_STAT_EVSEL_ID__ ## id) void perf_stat_evsel_id_init(struct perf_evsel *evsel); extern struct stats walltime_nsecs_stats; typedef void (*print_metric_t)(void *ctx, const char *color, const char *unit, const char *fmt, double val); typedef void (*new_line_t )(void *ctx); void perf_stat__init_shadow_stats(void); void perf_stat__reset_shadow_stats(void); void perf_stat__update_shadow_stats(struct perf_evsel *counter, u64 *count, int cpu); struct perf_stat_output_ctx { void *ctx; print_metric_t print_metric; new_line_t new_line; }; void perf_stat__print_shadow_stats(struct perf_evsel *evsel, double avg, int cpu, struct perf_stat_output_ctx *out); int perf_evlist__alloc_stats(struct perf_evlist *evlist, bool alloc_raw); void perf_evlist__free_stats(struct perf_evlist *evlist); void perf_evlist__reset_stats(struct perf_evlist *evlist); int perf_stat_process_counter(struct perf_stat_config *config, struct perf_evsel *counter); struct perf_tool; union perf_event; struct perf_session; int perf_event__process_stat_event(struct perf_tool *tool, union perf_event *event, struct perf_session *session); size_t perf_event__fprintf_stat(union perf_event *event, FILE *fp); size_t perf_event__fprintf_stat_round(union perf_event *event, FILE *fp); size_t perf_event__fprintf_stat_config(union perf_event *event, FILE *fp); #endif commit/net/9p?id=54791b276b4000b307339f269d3bf7db877d536f'>9p/Makefile
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authorDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
committerDavid S. Miller <davem@davemloft.net>2017-01-30 14:28:22 -0800
commit54791b276b4000b307339f269d3bf7db877d536f (patch)
tree1c2616bd373ce5ea28aac2a53e32f5b5834901ce /net/9p/Makefile
parent5d0e7705774dd412a465896d08d59a81a345c1e4 (diff)
parent047487241ff59374fded8c477f21453681f5995c (diff)
Merge branch 'sparc64-non-resumable-user-error-recovery'
Liam R. Howlett says: ==================== sparc64: Recover from userspace non-resumable PIO & MEM errors A non-resumable error from userspace is able to cause a kernel panic or trap loop due to the setup and handling of the queued traps once in the kernel. This patch series addresses both of these issues. The queues are fixed by simply zeroing the memory before use. PIO errors from userspace will result in a SIGBUS being sent to the user process. The MEM errors form userspace will result in a SIGKILL and also cause the offending pages to be claimed so they are no longer used in future tasks. SIGKILL is used to ensure that the process does not try to coredump and result in an attempt to read the memory again from within kernel space. Although there is a HV call to scrub the memory (mem_scrub), there is no easy way to guarantee that the real memory address(es) are not used by other tasks. Clearing the error with mem_scrub would zero the memory and cause the other processes to proceed with bad data. The handling of other non-resumable errors remain unchanged and will cause a panic. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/9p/Makefile')