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Revision 9c29bcd189f4ab1644b7125713602532d0aefdb7 authored by Eric Dumazet on 21 September 2018, 22:27:48 UTC, committed by David S. Miller on 24 September 2018, 04:55:25 UTC 
mlx5: remove ndo_poll_controller
 
As diagnosed by Song Liu, ndo_poll_controller() can
be very dangerous on loaded hosts, since the cpu
calling ndo_poll_controller() might steal all NAPI
contexts (for all RX/TX queues of the NIC). This capture
can last for unlimited amount of time, since one
cpu is generally not able to drain all the queues under load.

mlx5 uses NAPI for TX completions, so we better let core
networking stack call the napi->poll() to avoid the capture.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent a24b66c
Raw File
build-id.h 
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef PERF_BUILD_ID_H_
#define PERF_BUILD_ID_H_ 1

#define BUILD_ID_SIZE	20
#define SBUILD_ID_SIZE	(BUILD_ID_SIZE * 2 + 1)

#include "tool.h"
#include "namespaces.h"
#include <linux/types.h>

extern struct perf_tool build_id__mark_dso_hit_ops;
struct dso;
struct feat_fd;

int build_id__sprintf(const u8 *build_id, int len, char *bf);
int sysfs__sprintf_build_id(const char *root_dir, char *sbuild_id);
int filename__sprintf_build_id(const char *pathname, char *sbuild_id);
char *build_id_cache__kallsyms_path(const char *sbuild_id, char *bf,
				    size_t size);

char *dso__build_id_filename(const struct dso *dso, char *bf, size_t size,
			     bool is_debug);

int build_id__mark_dso_hit(struct perf_tool *tool, union perf_event *event,
			   struct perf_sample *sample, struct perf_evsel *evsel,
			   struct machine *machine);

int dsos__hit_all(struct perf_session *session);

bool perf_session__read_build_ids(struct perf_session *session, bool with_hits);
int perf_session__write_buildid_table(struct perf_session *session,
				      struct feat_fd *fd);
int perf_session__cache_build_ids(struct perf_session *session);

char *build_id_cache__origname(const char *sbuild_id);
char *build_id_cache__linkname(const char *sbuild_id, char *bf, size_t size);
char *build_id_cache__cachedir(const char *sbuild_id, const char *name,
			       struct nsinfo *nsi, bool is_kallsyms,
			       bool is_vdso);

struct strlist;

struct strlist *build_id_cache__list_all(bool validonly);
char *build_id_cache__complement(const char *incomplete_sbuild_id);
int build_id_cache__list_build_ids(const char *pathname, struct nsinfo *nsi,
				   struct strlist **result);
bool build_id_cache__cached(const char *sbuild_id);
int build_id_cache__add_s(const char *sbuild_id,
			  const char *name, struct nsinfo *nsi,
			  bool is_kallsyms, bool is_vdso);
int build_id_cache__remove_s(const char *sbuild_id);

extern char buildid_dir[];

void set_buildid_dir(const char *dir);
void disable_buildid_cache(void);

#endif
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