#ifndef _PROBE_EVENT_H #define _PROBE_EVENT_H #include #include "intlist.h" #include "strlist.h" #include "strfilter.h" /* Probe related configurations */ struct probe_conf { bool show_ext_vars; bool show_location_range; bool force_add; bool no_inlines; bool cache; int max_probes; }; extern struct probe_conf probe_conf; extern bool probe_event_dry_run; struct symbol; /* kprobe-tracer and uprobe-tracer tracing point */ struct probe_trace_point { char *realname; /* function real name (if needed) */ char *symbol; /* Base symbol */ char *module; /* Module name */ unsigned long offset; /* Offset from symbol */ unsigned long address; /* Actual address of the trace point */ bool retprobe; /* Return probe flag */ }; /* probe-tracer tracing argument referencing offset */ struct probe_trace_arg_ref { struct probe_trace_arg_ref *next; /* Next reference */ long offset; /* Offset value */ }; /* kprobe-tracer and uprobe-tracer tracing argument */ struct probe_trace_arg { char *name; /* Argument name */ char *value; /* Base value */ char *type; /* Type name */ struct probe_trace_arg_ref *ref; /* Referencing offset */ }; /* kprobe-tracer and uprobe-tracer tracing event (point + arg) */ struct probe_trace_event { char *event; /* Event name */ char *group; /* Group name */ struct probe_trace_point point; /* Trace point */ int nargs; /* Number of args */ bool uprobes; /* uprobes only */ struct probe_trace_arg *args; /* Arguments */ }; /* Perf probe probing point */ struct perf_probe_point { char *file; /* File path */ char *function; /* Function name */ int line; /* Line number */ bool retprobe; /* Return probe flag */ char *lazy_line; /* Lazy matching pattern */ unsigned long offset; /* Offset from function entry */ unsigned long abs_address; /* Absolute address of the point */ }; /* Perf probe probing argument field chain */ struct perf_probe_arg_field { struct perf_probe_arg_field *next; /* Next field */ char *name; /* Name of the field */ long index; /* Array index number */ bool ref; /* Referencing flag */ }; /* Perf probe probing argument */ struct perf_probe_arg { char *name; /* Argument name */ char *var; /* Variable name */ char *type; /* Type name */ struct perf_probe_arg_field *field; /* Structure fields */ }; /* Perf probe probing event (point + arg) */ struct perf_probe_event { char *event; /* Event name */ char *group; /* Group name */ struct perf_probe_point point; /* Probe point */ int nargs; /* Number of arguments */ bool sdt; /* SDT/cached event flag */ bool uprobes; /* Uprobe event flag */ char *target; /* Target binary */ struct perf_probe_arg *args; /* Arguments */ struct probe_trace_event *tevs; int ntevs; }; /* Line range */ struct line_range { char *file; /* File name */ char *function; /* Function name */ int start; /* Start line number */ int end; /* End line number */ int offset; /* Start line offset */ char *path; /* Real path name */ char *comp_dir; /* Compile directory */ struct intlist *line_list; /* Visible lines */ }; /* List of variables */ struct variable_list { struct probe_trace_point point; /* Actual probepoint */ struct strlist *vars; /* Available variables */ }; struct map; int init_probe_symbol_maps(bool user_only); void exit_probe_symbol_maps(void); /* Command string to events */ int parse_perf_probe_command(const char *cmd, struct perf_probe_event *pev); int parse_probe_trace_command(const char *cmd, struct probe_trace_event *tev); /* Events to command string */ char *synthesize_perf_probe_command(struct perf_probe_event *pev); char *synthesize_probe_trace_command(struct probe_trace_event *tev); char *synthesize_perf_probe_arg(struct perf_probe_arg *pa); char *synthesize_perf_probe_point(struct perf_probe_point *pp); int perf_probe_event__copy(struct perf_probe_event *dst, struct perf_probe_event *src); bool perf_probe_with_var(struct perf_probe_event *pev); /* Check the perf_probe_event needs debuginfo */ bool perf_probe_event_need_dwarf(struct perf_probe_event *pev); /* Release event contents */ void clear_perf_probe_event(struct perf_probe_event *pev); void clear_probe_trace_event(struct probe_trace_event *tev); /* Command string to line-range */ int parse_line_range_desc(const char *cmd, struct line_range *lr); /* Release line range members */ void line_range__clear(struct line_range *lr); /* Initialize line range */ int line_range__init(struct line_range *lr); int add_perf_probe_events(struct perf_probe_event *pevs, int npevs); int convert_perf_probe_events(struct perf_probe_event *pevs, int npevs); int apply_perf_probe_events(struct perf_probe_event *pevs, int npevs); int show_probe_trace_events(struct perf_probe_event *pevs, int npevs); void cleanup_perf_probe_events(struct perf_probe_event *pevs, int npevs); int del_perf_probe_events(struct strfilter *filter); int show_perf_probe_event(const char *group, const char *event, struct perf_probe_event *pev, const char *module, bool use_stdout); int show_perf_probe_events(struct strfilter *filter); int show_line_range(struct line_range *lr, const char *module, bool user); int show_available_vars(struct perf_probe_event *pevs, int npevs, struct strfilter *filter); int show_available_funcs(const char *module, struct strfilter *filter, bool user); void arch__fix_tev_from_maps(struct perf_probe_event *pev, struct probe_trace_event *tev, struct map *map, struct symbol *sym); /* If there is no space to write, returns -E2BIG. */ int e_snprintf(char *str, size_t size, const char *format, ...) __attribute__((format(printf, 3, 4))); /* Maximum index number of event-name postfix */ #define MAX_EVENT_INDEX 1024 int copy_to_probe_trace_arg(struct probe_trace_arg *tvar, struct perf_probe_arg *pvar); struct map *get_target_map(const char *target, bool user); void arch__post_process_probe_trace_events(struct perf_probe_event *pev, int ntevs); #endif /*_PROBE_EVENT_H */ 50fbc746ed9b415c25e92&id2=bf29bddf0417a4783da3b24e8c9e017ac649326f'>diff)
efi/fdt: Avoid FDT manipulation after ExitBootServices()
Some AArch64 UEFI implementations disable the MMU in ExitBootServices(), after which unaligned accesses to RAM are no longer supported. Commit: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") fixed an issue in the memory map handling of the stub FDT code, but inadvertently created an issue with such firmware, by moving some of the FDT manipulation to after the invocation of ExitBootServices(). Given that the stub's libfdt implementation uses the ordinary, accelerated string functions, which rely on hardware handling of unaligned accesses, manipulating the FDT with the MMU off may result in alignment faults. So fix the situation by moving the update_fdt_memmap() call into the callback function invoked by efi_exit_boot_services() right before it calls the ExitBootServices() UEFI service (which is arguably a better place for it anyway) Note that disabling the MMU in ExitBootServices() is not compliant with the UEFI spec, and carries great risk due to the fact that switching from cached to uncached memory accesses halfway through compiler generated code (i.e., involving a stack) can never be done in a way that is architecturally safe. Fixes: abfb7b686a3e ("efi/libstub/arm*: Pass latest memory map to the kernel") Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Tested-by: Riku Voipio <riku.voipio@linaro.org> Cc: <stable@vger.kernel.org> Cc: mark.rutland@arm.com Cc: linux-efi@vger.kernel.org Cc: matt@codeblueprint.co.uk Cc: leif.lindholm@linaro.org Cc: linux-arm-kernel@lists.infradead.org Link: http://lkml.kernel.org/r/1485971102-23330-2-git-send-email-ard.biesheuvel@linaro.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/dt-bindings/pinctrl/mt65xx.h')