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db5af2e4a0
When preparing the mem events for the argv copies are intentionally made. These copies are leaked and cause runs of perf using address sanitizer to fail. Rather than leak the memory allocate a chunk of memory for the mem event names upfront and build the strings in this - the storage is sized larger than the previous buffer size. The caller is then responsible for clearing up this memory. As part of this change, remove the mem_loads_name and mem_stores_name global buffers then change the perf_pmu__mem_events_name to write to an out argument buffer. Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Thomas Falcon <thomas.falcon@intel.com> Reviewed-by: Leo Yan <leo.yan@arm.com> Link: https://lore.kernel.org/r/20250308012853.1384762-1-irogers@google.com Signed-off-by: Namhyung Kim <namhyung@kernel.org>
93 lines
3.8 KiB
C
93 lines
3.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __PERF_MEM_EVENTS_H
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#define __PERF_MEM_EVENTS_H
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#include <stdbool.h>
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#include <linux/types.h>
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struct perf_mem_event {
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bool supported;
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bool ldlat;
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u32 aux_event;
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const char *tag;
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const char *name;
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const char *event_name;
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};
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enum {
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PERF_MEM_EVENTS__LOAD,
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PERF_MEM_EVENTS__STORE,
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PERF_MEM_EVENTS__LOAD_STORE,
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PERF_MEM_EVENTS__MAX,
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};
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struct evsel;
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struct mem_info;
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struct perf_pmu;
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extern unsigned int perf_mem_events__loads_ldlat;
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extern struct perf_mem_event perf_mem_events[PERF_MEM_EVENTS__MAX];
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extern bool perf_mem_record[PERF_MEM_EVENTS__MAX];
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int perf_pmu__mem_events_parse(struct perf_pmu *pmu, const char *str);
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int perf_pmu__mem_events_init(void);
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struct perf_mem_event *perf_pmu__mem_events_ptr(struct perf_pmu *pmu, int i);
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struct perf_pmu *perf_mem_events_find_pmu(void);
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int perf_pmu__mem_events_num_mem_pmus(struct perf_pmu *pmu);
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bool is_mem_loads_aux_event(struct evsel *leader);
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void perf_pmu__mem_events_list(struct perf_pmu *pmu);
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int perf_mem_events__record_args(const char **rec_argv, int *argv_nr,
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char **event_name_storage_out);
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int perf_mem__tlb_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
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int perf_mem__lvl_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
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int perf_mem__snp_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
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int perf_mem__lck_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
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int perf_mem__blk_scnprintf(char *out, size_t sz, const struct mem_info *mem_info);
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int perf_script__meminfo_scnprintf(char *bf, size_t size, const struct mem_info *mem_info);
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struct c2c_stats {
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u32 nr_entries;
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u32 locks; /* count of 'lock' transactions */
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u32 store; /* count of all stores in trace */
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u32 st_uncache; /* stores to uncacheable address */
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u32 st_noadrs; /* cacheable store with no address */
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u32 st_l1hit; /* count of stores that hit L1D */
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u32 st_l1miss; /* count of stores that miss L1D */
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u32 st_na; /* count of stores with memory level is not available */
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u32 load; /* count of all loads in trace */
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u32 ld_excl; /* exclusive loads, rmt/lcl DRAM - snp none/miss */
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u32 ld_shared; /* shared loads, rmt/lcl DRAM - snp hit */
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u32 ld_uncache; /* loads to uncacheable address */
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u32 ld_io; /* loads to io address */
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u32 ld_miss; /* loads miss */
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u32 ld_noadrs; /* cacheable load with no address */
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u32 ld_fbhit; /* count of loads hitting Fill Buffer */
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u32 ld_l1hit; /* count of loads that hit L1D */
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u32 ld_l2hit; /* count of loads that hit L2D */
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u32 ld_llchit; /* count of loads that hit LLC */
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u32 lcl_hitm; /* count of loads with local HITM */
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u32 rmt_hitm; /* count of loads with remote HITM */
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u32 tot_hitm; /* count of loads with local and remote HITM */
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u32 lcl_peer; /* count of loads with local peer cache */
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u32 rmt_peer; /* count of loads with remote peer cache */
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u32 tot_peer; /* count of loads with local and remote peer cache */
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u32 rmt_hit; /* count of loads with remote hit clean; */
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u32 lcl_dram; /* count of loads miss to local DRAM */
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u32 rmt_dram; /* count of loads miss to remote DRAM */
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u32 blk_data; /* count of loads blocked by data */
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u32 blk_addr; /* count of loads blocked by address conflict */
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u32 nomap; /* count of load/stores with no phys addrs */
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u32 noparse; /* count of unparsable data sources */
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};
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struct hist_entry;
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int c2c_decode_stats(struct c2c_stats *stats, struct mem_info *mi);
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void c2c_add_stats(struct c2c_stats *stats, struct c2c_stats *add);
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#endif /* __PERF_MEM_EVENTS_H */
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